./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/memory-model/4SB.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/memory-model/4SB.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 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:47:29,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:47:29,385 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 18:47:29,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:47:29,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:47:29,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:47:29,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:47:29,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:47:29,420 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:47:29,423 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:47:29,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:47:29,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:47:29,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:47:29,425 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:47:29,426 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:47:29,426 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:47:29,426 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:47:29,426 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 18:47:29,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:47:29,427 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 18:47:29,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:47:29,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:47:29,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:47:29,428 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:47:29,428 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 18:47:29,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:47:29,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:47:29,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:47:29,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:47:29,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:47:29,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:47:29,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:47:29,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:47:29,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:47:29,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:47:29,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:47:29,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:47:29,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:47:29,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:47:29,431 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:47:29,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:47:29,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:47:29,432 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 [2023-11-22 18:47:29,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:47:29,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:47:29,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:47:29,658 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:47:29,658 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:47:29,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memory-model/4SB.i [2023-11-22 18:47:30,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:47:30,927 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:47:30,928 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memory-model/4SB.i [2023-11-22 18:47:30,936 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e47a2536/81511bcae55d48e6be5973afecde35fb/FLAGab21dadb7 [2023-11-22 18:47:30,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e47a2536/81511bcae55d48e6be5973afecde35fb [2023-11-22 18:47:30,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:47:30,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:47:30,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:47:30,955 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:47:30,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:47:30,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:47:30" (1/1) ... [2023-11-22 18:47:30,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f580af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:30, skipping insertion in model container [2023-11-22 18:47:30,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:47:30" (1/1) ... [2023-11-22 18:47:31,004 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:47:31,278 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/memory-model/4SB.i[21105,21118] [2023-11-22 18:47:31,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:47:31,296 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:47:31,387 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/memory-model/4SB.i[21105,21118] [2023-11-22 18:47:31,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:47:31,405 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:47:31,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31 WrapperNode [2023-11-22 18:47:31,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:47:31,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:47:31,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:47:31,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:47:31,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,510 INFO L138 Inliner]: procedures = 28, calls = 671, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1598 [2023-11-22 18:47:31,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:47:31,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:47:31,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:47:31,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:47:31,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,542 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,576 INFO L189 HeapSplitter]: Split 479 memory accesses to 16 slices as follows [10, 152, 13, 13, 13, 13, 15, 3, 10, 96, 60, 3, 11, 45, 12, 10] [2023-11-22 18:47:31,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,609 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:47:31,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:47:31,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:47:31,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:47:31,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (1/1) ... [2023-11-22 18:47:31,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:47:31,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:31,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 18:47:31,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 18:47:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_4_conditions [2023-11-22 18:47:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_4_conditions [2023-11-22 18:47:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2023-11-22 18:47:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2023-11-22 18:47:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2023-11-22 18:47:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2023-11-22 18:47:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2023-11-22 18:47:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2023-11-22 18:47:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2023-11-22 18:47:31,767 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2023-11-22 18:47:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-22 18:47:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-22 18:47:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-22 18:47:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-22 18:47:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-22 18:47:31,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-22 18:47:31,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-22 18:47:31,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-22 18:47:31,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-11-22 18:47:31,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-11-22 18:47:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2023-11-22 18:47:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2023-11-22 18:47:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2023-11-22 18:47:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2023-11-22 18:47:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2023-11-22 18:47:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#15 [2023-11-22 18:47:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 18:47:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 18:47:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 18:47:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 18:47:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 18:47:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 18:47:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-22 18:47:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-22 18:47:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-22 18:47:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-22 18:47:31,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-22 18:47:31,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-22 18:47:31,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-22 18:47:31,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-22 18:47:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-22 18:47:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-22 18:47:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-22 18:47:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 18:47:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 18:47:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 18:47:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 18:47:31,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 18:47:31,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-22 18:47:31,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-22 18:47:31,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-22 18:47:31,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-22 18:47:31,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-22 18:47:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-22 18:47:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-22 18:47:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-22 18:47:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-22 18:47:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-22 18:47:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-22 18:47:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:47:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:47:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:47:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 18:47:31,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 18:47:31,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 18:47:31,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 18:47:31,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 18:47:31,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 18:47:31,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 18:47:31,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-22 18:47:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-22 18:47:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-22 18:47:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-22 18:47:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-22 18:47:31,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-22 18:47:31,783 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2023-11-22 18:47:31,783 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2023-11-22 18:47:31,783 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2023-11-22 18:47:31,783 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2023-11-22 18:47:31,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:47:31,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:47:31,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 18:47:32,052 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:47:32,054 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:47:33,819 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:47:33,911 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:47:33,912 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-22 18:47:33,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:47:33 BoogieIcfgContainer [2023-11-22 18:47:33,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:47:33,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:47:33,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:47:33,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:47:33,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:47:30" (1/3) ... [2023-11-22 18:47:33,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e75c2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:47:33, skipping insertion in model container [2023-11-22 18:47:33,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:31" (2/3) ... [2023-11-22 18:47:33,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e75c2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:47:33, skipping insertion in model container [2023-11-22 18:47:33,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:47:33" (3/3) ... [2023-11-22 18:47:33,933 INFO L112 eAbstractionObserver]: Analyzing ICFG 4SB.i [2023-11-22 18:47:33,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:47:33,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:47:34,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:47:34,017 INFO L357 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, mHoare=true, 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;@2041c1e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:47:34,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:47:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 228 states have (on average 1.6271929824561404) internal successors, (371), 233 states have internal predecessors, (371), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:47:34,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-22 18:47:34,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:34,045 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-22 18:47:34,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:34,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:34,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1824283201, now seen corresponding path program 1 times [2023-11-22 18:47:34,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:34,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161480100] [2023-11-22 18:47:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:34,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 18:47:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:47:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:47:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 18:47:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:47:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 18:47:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 18:47:35,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:35,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161480100] [2023-11-22 18:47:35,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161480100] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:35,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32900752] [2023-11-22 18:47:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:35,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:35,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:35,042 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) [2023-11-22 18:47:35,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 18:47:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:35,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-22 18:47:35,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 18:47:35,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:35,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32900752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:35,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:35,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2023-11-22 18:47:35,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299845783] [2023-11-22 18:47:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 18:47:35,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 18:47:35,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:47:35,577 INFO L87 Difference]: Start difference. First operand has 263 states, 228 states have (on average 1.6271929824561404) internal successors, (371), 233 states have internal predecessors, (371), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:36,569 INFO L93 Difference]: Finished difference Result 524 states and 850 transitions. [2023-11-22 18:47:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 18:47:36,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2023-11-22 18:47:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:36,579 INFO L225 Difference]: With dead ends: 524 [2023-11-22 18:47:36,579 INFO L226 Difference]: Without dead ends: 251 [2023-11-22 18:47:36,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:47:36,585 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:36,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:47:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-22 18:47:36,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2023-11-22 18:47:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 217 states have (on average 1.336405529953917) internal successors, (290), 221 states have internal predecessors, (290), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:47:36,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 342 transitions. [2023-11-22 18:47:36,633 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 342 transitions. Word has length 64 [2023-11-22 18:47:36,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:36,634 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 342 transitions. [2023-11-22 18:47:36,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 342 transitions. [2023-11-22 18:47:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-22 18:47:36,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:36,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-22 18:47:36,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 18:47:36,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-22 18:47:36,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:36,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:36,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1830922863, now seen corresponding path program 1 times [2023-11-22 18:47:36,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:36,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961233330] [2023-11-22 18:47:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:36,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 18:47:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:47:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:47:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 18:47:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:47:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 18:47:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-22 18:47:37,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961233330] [2023-11-22 18:47:37,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961233330] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:37,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613477445] [2023-11-22 18:47:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:37,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:37,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:37,360 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) [2023-11-22 18:47:37,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 18:47:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:37,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 18:47:37,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:37,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613477445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:37,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:37,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-22 18:47:37,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386840587] [2023-11-22 18:47:37,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:37,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:37,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:37,870 INFO L87 Difference]: Start difference. First operand 251 states and 342 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:47:39,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:39,728 INFO L93 Difference]: Finished difference Result 501 states and 683 transitions. [2023-11-22 18:47:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:39,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2023-11-22 18:47:39,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:39,733 INFO L225 Difference]: With dead ends: 501 [2023-11-22 18:47:39,733 INFO L226 Difference]: Without dead ends: 252 [2023-11-22 18:47:39,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:39,735 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 0 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:39,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 653 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-22 18:47:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-22 18:47:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-11-22 18:47:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 218 states have (on average 1.334862385321101) internal successors, (291), 222 states have internal predecessors, (291), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:47:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 343 transitions. [2023-11-22 18:47:39,747 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 343 transitions. Word has length 65 [2023-11-22 18:47:39,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:39,748 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 343 transitions. [2023-11-22 18:47:39,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:47:39,748 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 343 transitions. [2023-11-22 18:47:39,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-22 18:47:39,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:39,750 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-22 18:47:39,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 18:47:39,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-22 18:47:39,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:39,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:39,961 INFO L85 PathProgramCache]: Analyzing trace with hash -394052396, now seen corresponding path program 1 times [2023-11-22 18:47:39,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:39,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358456201] [2023-11-22 18:47:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:39,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:47:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 18:47:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:47:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-22 18:47:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 18:47:40,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:40,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358456201] [2023-11-22 18:47:40,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358456201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:40,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854940752] [2023-11-22 18:47:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:40,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:40,481 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) [2023-11-22 18:47:40,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 18:47:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:40,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-22 18:47:40,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:40,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854940752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:40,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:40,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:40,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004683121] [2023-11-22 18:47:40,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:40,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:40,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:40,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:40,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:40,951 INFO L87 Difference]: Start difference. First operand 252 states and 343 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:42,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:43,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:43,289 INFO L93 Difference]: Finished difference Result 500 states and 685 transitions. [2023-11-22 18:47:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:43,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2023-11-22 18:47:43,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:43,291 INFO L225 Difference]: With dead ends: 500 [2023-11-22 18:47:43,291 INFO L226 Difference]: Without dead ends: 253 [2023-11-22 18:47:43,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:43,297 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 0 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:43,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 652 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-22 18:47:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-22 18:47:43,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2023-11-22 18:47:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 219 states have (on average 1.3333333333333333) internal successors, (292), 223 states have internal predecessors, (292), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:47:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 344 transitions. [2023-11-22 18:47:43,314 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 344 transitions. Word has length 66 [2023-11-22 18:47:43,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:43,314 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 344 transitions. [2023-11-22 18:47:43,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:43,314 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 344 transitions. [2023-11-22 18:47:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-22 18:47:43,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:43,316 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2023-11-22 18:47:43,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 18:47:43,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:43,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:43,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1859810148, now seen corresponding path program 1 times [2023-11-22 18:47:43,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:43,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256637865] [2023-11-22 18:47:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:43,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:47:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:47:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:47:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:47:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-22 18:47:44,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256637865] [2023-11-22 18:47:44,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256637865] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77842396] [2023-11-22 18:47:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:44,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:44,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:44,017 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) [2023-11-22 18:47:44,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 18:47:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:44,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:44,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-22 18:47:44,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:44,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77842396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:44,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:44,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:44,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442413741] [2023-11-22 18:47:44,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:44,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:44,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:44,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:44,466 INFO L87 Difference]: Start difference. First operand 253 states and 344 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:46,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:46,466 INFO L93 Difference]: Finished difference Result 490 states and 666 transitions. [2023-11-22 18:47:46,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:46,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2023-11-22 18:47:46,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:46,467 INFO L225 Difference]: With dead ends: 490 [2023-11-22 18:47:46,467 INFO L226 Difference]: Without dead ends: 260 [2023-11-22 18:47:46,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:46,469 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:46,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 641 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-22 18:47:46,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-22 18:47:46,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2023-11-22 18:47:46,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 220 states have (on average 1.3318181818181818) internal successors, (293), 224 states have internal predecessors, (293), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:47:46,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 345 transitions. [2023-11-22 18:47:46,479 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 345 transitions. Word has length 70 [2023-11-22 18:47:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:46,479 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 345 transitions. [2023-11-22 18:47:46,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:46,480 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 345 transitions. [2023-11-22 18:47:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-22 18:47:46,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:46,481 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2023-11-22 18:47:46,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 18:47:46,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:46,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:46,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:46,698 INFO L85 PathProgramCache]: Analyzing trace with hash 712289420, now seen corresponding path program 1 times [2023-11-22 18:47:46,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:46,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958716388] [2023-11-22 18:47:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:46,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:47,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:47:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:47,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:47:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:47:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 18:47:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-22 18:47:47,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:47,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958716388] [2023-11-22 18:47:47,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958716388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:47,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985868808] [2023-11-22 18:47:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:47,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:47,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:47,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:47,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 18:47:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:47,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:47,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-22 18:47:47,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:47,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985868808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:47,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:47,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:47,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955048781] [2023-11-22 18:47:47,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:47,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:47,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:47,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:47,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:47,688 INFO L87 Difference]: Start difference. First operand 254 states and 345 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:48,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:49,754 INFO L93 Difference]: Finished difference Result 483 states and 656 transitions. [2023-11-22 18:47:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2023-11-22 18:47:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:49,756 INFO L225 Difference]: With dead ends: 483 [2023-11-22 18:47:49,756 INFO L226 Difference]: Without dead ends: 261 [2023-11-22 18:47:49,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:49,757 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 6 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:49,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 644 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 18:47:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-22 18:47:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 255. [2023-11-22 18:47:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 221 states have (on average 1.330316742081448) internal successors, (294), 225 states have internal predecessors, (294), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:47:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 346 transitions. [2023-11-22 18:47:49,767 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 346 transitions. Word has length 73 [2023-11-22 18:47:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:49,767 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 346 transitions. [2023-11-22 18:47:49,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 346 transitions. [2023-11-22 18:47:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 18:47:49,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:49,769 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2023-11-22 18:47:49,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 18:47:49,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:49,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:49,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:49,985 INFO L85 PathProgramCache]: Analyzing trace with hash -944166164, now seen corresponding path program 1 times [2023-11-22 18:47:49,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:49,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923858457] [2023-11-22 18:47:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:49,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:47:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:47:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:47:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:47:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-22 18:47:50,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:50,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923858457] [2023-11-22 18:47:50,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923858457] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:50,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921664472] [2023-11-22 18:47:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:50,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:50,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:50,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:50,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 18:47:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:50,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-22 18:47:50,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:50,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921664472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:50,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:50,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:50,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773163268] [2023-11-22 18:47:50,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:50,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:50,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:50,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:50,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:50,905 INFO L87 Difference]: Start difference. First operand 255 states and 346 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:51,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:53,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:53,273 INFO L93 Difference]: Finished difference Result 476 states and 646 transitions. [2023-11-22 18:47:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:53,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2023-11-22 18:47:53,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:53,275 INFO L225 Difference]: With dead ends: 476 [2023-11-22 18:47:53,275 INFO L226 Difference]: Without dead ends: 262 [2023-11-22 18:47:53,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:53,276 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 6 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:53,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 640 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-22 18:47:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-22 18:47:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2023-11-22 18:47:53,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 222 states have (on average 1.3288288288288288) internal successors, (295), 226 states have internal predecessors, (295), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:47:53,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 347 transitions. [2023-11-22 18:47:53,284 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 347 transitions. Word has length 76 [2023-11-22 18:47:53,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:53,284 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 347 transitions. [2023-11-22 18:47:53,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:53,285 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 347 transitions. [2023-11-22 18:47:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-22 18:47:53,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:53,286 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2023-11-22 18:47:53,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-22 18:47:53,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:53,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:53,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1142732580, now seen corresponding path program 1 times [2023-11-22 18:47:53,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:53,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175320066] [2023-11-22 18:47:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:53,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:47:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:47:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:47:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 18:47:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-22 18:47:53,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:53,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175320066] [2023-11-22 18:47:53,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175320066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:53,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906718347] [2023-11-22 18:47:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:53,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:53,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:53,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:53,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 18:47:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:54,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:54,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-22 18:47:54,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:54,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906718347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:54,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:54,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:54,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652834990] [2023-11-22 18:47:54,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:54,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:54,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:54,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:54,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:54,434 INFO L87 Difference]: Start difference. First operand 256 states and 347 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:56,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:56,615 INFO L93 Difference]: Finished difference Result 467 states and 635 transitions. [2023-11-22 18:47:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:56,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 79 [2023-11-22 18:47:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:56,617 INFO L225 Difference]: With dead ends: 467 [2023-11-22 18:47:56,617 INFO L226 Difference]: Without dead ends: 263 [2023-11-22 18:47:56,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:56,618 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:56,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 641 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-22 18:47:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-22 18:47:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 257. [2023-11-22 18:47:56,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 223 states have (on average 1.3273542600896862) internal successors, (296), 227 states have internal predecessors, (296), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:47:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 348 transitions. [2023-11-22 18:47:56,632 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 348 transitions. Word has length 79 [2023-11-22 18:47:56,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:56,634 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 348 transitions. [2023-11-22 18:47:56,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:47:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 348 transitions. [2023-11-22 18:47:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-22 18:47:56,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:56,639 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2023-11-22 18:47:56,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 18:47:56,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:56,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:56,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:56,853 INFO L85 PathProgramCache]: Analyzing trace with hash 818065724, now seen corresponding path program 1 times [2023-11-22 18:47:56,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:56,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543609636] [2023-11-22 18:47:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:56,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:47:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:47:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:47:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:47:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-22 18:47:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:57,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543609636] [2023-11-22 18:47:57,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543609636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:57,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121080156] [2023-11-22 18:47:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:57,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:57,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:57,314 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:57,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 18:47:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:57,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-22 18:47:57,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:57,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121080156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:57,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:57,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:57,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148296099] [2023-11-22 18:47:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:57,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:57,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:57,915 INFO L87 Difference]: Start difference. First operand 257 states and 348 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:47:58,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:48:00,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:00,071 INFO L93 Difference]: Finished difference Result 325 states and 455 transitions. [2023-11-22 18:48:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:48:00,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 82 [2023-11-22 18:48:00,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:00,073 INFO L225 Difference]: With dead ends: 325 [2023-11-22 18:48:00,073 INFO L226 Difference]: Without dead ends: 315 [2023-11-22 18:48:00,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:00,073 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 93 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:00,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 561 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 18:48:00,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-22 18:48:00,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 258. [2023-11-22 18:48:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 224 states have (on average 1.3258928571428572) internal successors, (297), 228 states have internal predecessors, (297), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:00,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 349 transitions. [2023-11-22 18:48:00,080 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 349 transitions. Word has length 82 [2023-11-22 18:48:00,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:00,080 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 349 transitions. [2023-11-22 18:48:00,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:00,081 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 349 transitions. [2023-11-22 18:48:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-22 18:48:00,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:00,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2023-11-22 18:48:00,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:00,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-22 18:48:00,290 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:00,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1805887728, now seen corresponding path program 1 times [2023-11-22 18:48:00,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:00,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626711682] [2023-11-22 18:48:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:00,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-22 18:48:00,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626711682] [2023-11-22 18:48:00,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626711682] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:00,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013409487] [2023-11-22 18:48:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:00,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:00,719 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:00,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 18:48:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:01,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:01,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-22 18:48:01,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:01,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013409487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:01,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:01,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:48:01,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346014835] [2023-11-22 18:48:01,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:01,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:48:01,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:01,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:48:01,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:01,271 INFO L87 Difference]: Start difference. First operand 258 states and 349 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:03,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:48:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:03,139 INFO L93 Difference]: Finished difference Result 326 states and 456 transitions. [2023-11-22 18:48:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:48:03,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 92 [2023-11-22 18:48:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:03,141 INFO L225 Difference]: With dead ends: 326 [2023-11-22 18:48:03,141 INFO L226 Difference]: Without dead ends: 316 [2023-11-22 18:48:03,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:03,142 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 83 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:03,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 648 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-22 18:48:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-22 18:48:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2023-11-22 18:48:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 281 states have (on average 1.387900355871886) internal successors, (390), 285 states have internal predecessors, (390), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 442 transitions. [2023-11-22 18:48:03,150 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 442 transitions. Word has length 92 [2023-11-22 18:48:03,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:03,151 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 442 transitions. [2023-11-22 18:48:03,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 442 transitions. [2023-11-22 18:48:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-22 18:48:03,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:03,152 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2023-11-22 18:48:03,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:03,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:03,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:03,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash 78997952, now seen corresponding path program 1 times [2023-11-22 18:48:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:03,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286872829] [2023-11-22 18:48:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-22 18:48:03,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:03,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286872829] [2023-11-22 18:48:03,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286872829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:03,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462299635] [2023-11-22 18:48:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:03,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:03,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:03,814 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:03,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 18:48:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:04,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:04,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-22 18:48:04,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:04,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462299635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:04,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:04,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:48:04,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280255921] [2023-11-22 18:48:04,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:04,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:48:04,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:48:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:04,365 INFO L87 Difference]: Start difference. First operand 315 states and 442 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:06,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:48:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:06,500 INFO L93 Difference]: Finished difference Result 441 states and 643 transitions. [2023-11-22 18:48:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:48:06,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 98 [2023-11-22 18:48:06,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:06,502 INFO L225 Difference]: With dead ends: 441 [2023-11-22 18:48:06,502 INFO L226 Difference]: Without dead ends: 431 [2023-11-22 18:48:06,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:06,503 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 77 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:06,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 648 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 18:48:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-22 18:48:06,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2023-11-22 18:48:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 397 states have (on average 1.455919395465995) internal successors, (578), 401 states have internal predecessors, (578), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 630 transitions. [2023-11-22 18:48:06,511 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 630 transitions. Word has length 98 [2023-11-22 18:48:06,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:06,512 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 630 transitions. [2023-11-22 18:48:06,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 630 transitions. [2023-11-22 18:48:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 18:48:06,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:06,513 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:06,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:06,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-22 18:48:06,727 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:06,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1574632082, now seen corresponding path program 1 times [2023-11-22 18:48:06,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:06,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553818988] [2023-11-22 18:48:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:06,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:07,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:07,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 18:48:07,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:07,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553818988] [2023-11-22 18:48:07,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553818988] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:07,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707234161] [2023-11-22 18:48:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:07,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:07,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:07,189 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:07,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 18:48:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:07,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:07,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 18:48:07,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707234161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:07,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:07,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:48:07,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111197720] [2023-11-22 18:48:07,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:07,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:48:07,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:48:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:48:07,800 INFO L87 Difference]: Start difference. First operand 431 states and 630 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:09,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:48:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:10,734 INFO L93 Difference]: Finished difference Result 721 states and 1095 transitions. [2023-11-22 18:48:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:48:10,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 18:48:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:10,736 INFO L225 Difference]: With dead ends: 721 [2023-11-22 18:48:10,737 INFO L226 Difference]: Without dead ends: 479 [2023-11-22 18:48:10,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:48:10,737 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 21 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:10,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 969 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-22 18:48:10,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-22 18:48:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 439. [2023-11-22 18:48:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 405 states have (on average 1.4469135802469135) internal successors, (586), 409 states have internal predecessors, (586), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 638 transitions. [2023-11-22 18:48:10,751 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 638 transitions. Word has length 136 [2023-11-22 18:48:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:10,752 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 638 transitions. [2023-11-22 18:48:10,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:10,752 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 638 transitions. [2023-11-22 18:48:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 18:48:10,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:10,755 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:10,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:10,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 18:48:10,980 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:10,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2018735340, now seen corresponding path program 1 times [2023-11-22 18:48:10,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:10,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969266718] [2023-11-22 18:48:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:10,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:11,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:11,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 18:48:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969266718] [2023-11-22 18:48:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969266718] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774736402] [2023-11-22 18:48:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:11,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:11,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:11,431 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:11,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 18:48:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:12,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:12,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 18:48:12,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:12,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774736402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:12,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:12,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:48:12,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146512059] [2023-11-22 18:48:12,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:12,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:48:12,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:48:12,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:48:12,034 INFO L87 Difference]: Start difference. First operand 439 states and 638 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:14,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:14,735 INFO L93 Difference]: Finished difference Result 721 states and 1087 transitions. [2023-11-22 18:48:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:48:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 18:48:14,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:14,737 INFO L225 Difference]: With dead ends: 721 [2023-11-22 18:48:14,737 INFO L226 Difference]: Without dead ends: 471 [2023-11-22 18:48:14,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:48:14,739 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 12 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:14,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 966 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-22 18:48:14,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-11-22 18:48:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 447. [2023-11-22 18:48:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 413 states have (on average 1.4382566585956416) internal successors, (594), 417 states have internal predecessors, (594), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 646 transitions. [2023-11-22 18:48:14,750 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 646 transitions. Word has length 136 [2023-11-22 18:48:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:14,751 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 646 transitions. [2023-11-22 18:48:14,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:14,751 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 646 transitions. [2023-11-22 18:48:14,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 18:48:14,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:14,752 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:14,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:14,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-22 18:48:14,970 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:14,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash -632531946, now seen corresponding path program 1 times [2023-11-22 18:48:14,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402556648] [2023-11-22 18:48:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:14,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:15,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:15,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 18:48:15,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:15,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402556648] [2023-11-22 18:48:15,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402556648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:15,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702265545] [2023-11-22 18:48:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:15,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:15,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:15,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:15,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 18:48:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:16,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:16,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 18:48:16,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:16,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702265545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:16,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:16,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:48:16,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583911718] [2023-11-22 18:48:16,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:16,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:48:16,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:48:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:48:16,045 INFO L87 Difference]: Start difference. First operand 447 states and 646 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:18,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:48:19,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:48:19,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:19,400 INFO L93 Difference]: Finished difference Result 721 states and 1079 transitions. [2023-11-22 18:48:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:48:19,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 18:48:19,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:19,402 INFO L225 Difference]: With dead ends: 721 [2023-11-22 18:48:19,402 INFO L226 Difference]: Without dead ends: 463 [2023-11-22 18:48:19,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:48:19,403 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 3 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:19,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 965 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-22 18:48:19,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-22 18:48:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 459. [2023-11-22 18:48:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 425 states have (on average 1.4258823529411764) internal successors, (606), 429 states have internal predecessors, (606), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 658 transitions. [2023-11-22 18:48:19,411 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 658 transitions. Word has length 136 [2023-11-22 18:48:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:19,412 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 658 transitions. [2023-11-22 18:48:19,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 658 transitions. [2023-11-22 18:48:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 18:48:19,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:19,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:19,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:19,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 18:48:19,621 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:19,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:19,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1290696088, now seen corresponding path program 1 times [2023-11-22 18:48:19,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:19,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271696386] [2023-11-22 18:48:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:19,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 18:48:20,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:20,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271696386] [2023-11-22 18:48:20,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271696386] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:20,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835098577] [2023-11-22 18:48:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:20,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:20,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:20,074 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:20,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 18:48:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:20,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:20,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 18:48:20,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:20,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835098577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:20,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:20,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:48:20,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357118464] [2023-11-22 18:48:20,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:20,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:48:20,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:20,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:48:20,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:48:20,737 INFO L87 Difference]: Start difference. First operand 459 states and 658 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:23,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:23,372 INFO L93 Difference]: Finished difference Result 761 states and 1127 transitions. [2023-11-22 18:48:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:48:23,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 18:48:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:23,374 INFO L225 Difference]: With dead ends: 761 [2023-11-22 18:48:23,374 INFO L226 Difference]: Without dead ends: 491 [2023-11-22 18:48:23,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:48:23,375 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 12 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:23,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 966 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-22 18:48:23,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-11-22 18:48:23,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 467. [2023-11-22 18:48:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 433 states have (on average 1.418013856812933) internal successors, (614), 437 states have internal predecessors, (614), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 666 transitions. [2023-11-22 18:48:23,383 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 666 transitions. Word has length 136 [2023-11-22 18:48:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:23,384 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 666 transitions. [2023-11-22 18:48:23,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 666 transitions. [2023-11-22 18:48:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 18:48:23,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:23,385 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:23,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:23,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:23,603 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:23,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:23,603 INFO L85 PathProgramCache]: Analyzing trace with hash -514742246, now seen corresponding path program 1 times [2023-11-22 18:48:23,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:23,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717684564] [2023-11-22 18:48:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:23,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:23,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:23,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:23,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 18:48:24,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:24,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717684564] [2023-11-22 18:48:24,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717684564] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:24,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935579965] [2023-11-22 18:48:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:24,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:24,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:24,051 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:24,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 18:48:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:24,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:24,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:24,685 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 18:48:24,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:24,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935579965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:24,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:24,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:48:24,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310622716] [2023-11-22 18:48:24,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:24,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:48:24,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:24,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:48:24,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:48:24,687 INFO L87 Difference]: Start difference. First operand 467 states and 666 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:26,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:48:27,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:27,668 INFO L93 Difference]: Finished difference Result 761 states and 1119 transitions. [2023-11-22 18:48:27,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:48:27,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 18:48:27,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:27,670 INFO L225 Difference]: With dead ends: 761 [2023-11-22 18:48:27,670 INFO L226 Difference]: Without dead ends: 483 [2023-11-22 18:48:27,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:48:27,671 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 3 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:27,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 965 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-22 18:48:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-11-22 18:48:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 479. [2023-11-22 18:48:27,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 445 states have (on average 1.4067415730337078) internal successors, (626), 449 states have internal predecessors, (626), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 678 transitions. [2023-11-22 18:48:27,679 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 678 transitions. Word has length 136 [2023-11-22 18:48:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:27,679 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 678 transitions. [2023-11-22 18:48:27,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 678 transitions. [2023-11-22 18:48:27,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 18:48:27,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:27,681 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:27,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:27,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-22 18:48:27,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:27,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:27,895 INFO L85 PathProgramCache]: Analyzing trace with hash -92040420, now seen corresponding path program 1 times [2023-11-22 18:48:27,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:27,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582991779] [2023-11-22 18:48:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:27,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:28,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:28,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:28,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:28,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:28,315 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 18:48:28,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:28,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582991779] [2023-11-22 18:48:28,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582991779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:28,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076149158] [2023-11-22 18:48:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:28,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:28,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:28,317 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:28,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 18:48:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:28,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:28,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 18:48:28,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:28,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076149158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:28,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:28,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:48:28,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484530196] [2023-11-22 18:48:28,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:28,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:48:28,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:28,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:48:28,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:48:28,958 INFO L87 Difference]: Start difference. First operand 479 states and 678 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:31,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:31,896 INFO L93 Difference]: Finished difference Result 801 states and 1167 transitions. [2023-11-22 18:48:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:48:31,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 18:48:31,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:31,910 INFO L225 Difference]: With dead ends: 801 [2023-11-22 18:48:31,910 INFO L226 Difference]: Without dead ends: 511 [2023-11-22 18:48:31,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:48:31,911 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 12 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:31,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 966 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-22 18:48:31,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-11-22 18:48:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 487. [2023-11-22 18:48:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 453 states have (on average 1.3995584988962473) internal successors, (634), 457 states have internal predecessors, (634), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 686 transitions. [2023-11-22 18:48:31,923 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 686 transitions. Word has length 136 [2023-11-22 18:48:31,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:31,923 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 686 transitions. [2023-11-22 18:48:31,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 686 transitions. [2023-11-22 18:48:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 18:48:31,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:31,925 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:31,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:32,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 18:48:32,142 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:32,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:32,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1371904098, now seen corresponding path program 1 times [2023-11-22 18:48:32,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:32,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940398899] [2023-11-22 18:48:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:32,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 18:48:32,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:32,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940398899] [2023-11-22 18:48:32,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940398899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:32,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700275258] [2023-11-22 18:48:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:32,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:32,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:32,577 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:32,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 18:48:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:33,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:33,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 18:48:33,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:33,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700275258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:33,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:33,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:48:33,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096244008] [2023-11-22 18:48:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:33,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:48:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:48:33,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:48:33,254 INFO L87 Difference]: Start difference. First operand 487 states and 686 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:36,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:36,022 INFO L93 Difference]: Finished difference Result 801 states and 1159 transitions. [2023-11-22 18:48:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:48:36,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 18:48:36,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:36,024 INFO L225 Difference]: With dead ends: 801 [2023-11-22 18:48:36,024 INFO L226 Difference]: Without dead ends: 503 [2023-11-22 18:48:36,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:48:36,025 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 3 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:36,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 965 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-22 18:48:36,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-11-22 18:48:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 499. [2023-11-22 18:48:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 465 states have (on average 1.389247311827957) internal successors, (646), 469 states have internal predecessors, (646), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 698 transitions. [2023-11-22 18:48:36,033 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 698 transitions. Word has length 136 [2023-11-22 18:48:36,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:36,033 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 698 transitions. [2023-11-22 18:48:36,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 698 transitions. [2023-11-22 18:48:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 18:48:36,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:36,035 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:36,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:36,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 18:48:36,248 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:36,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:36,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1496307482, now seen corresponding path program 1 times [2023-11-22 18:48:36,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:36,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557735505] [2023-11-22 18:48:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:36,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:36,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:36,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 18:48:36,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:36,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557735505] [2023-11-22 18:48:36,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557735505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:36,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028669872] [2023-11-22 18:48:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:36,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:36,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:36,705 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:36,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 18:48:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:37,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:37,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-22 18:48:37,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:37,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028669872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:37,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:37,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:48:37,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767243827] [2023-11-22 18:48:37,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:37,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:48:37,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:37,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:48:37,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:37,469 INFO L87 Difference]: Start difference. First operand 499 states and 698 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:39,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:39,317 INFO L93 Difference]: Finished difference Result 809 states and 1155 transitions. [2023-11-22 18:48:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:48:39,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 18:48:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:39,321 INFO L225 Difference]: With dead ends: 809 [2023-11-22 18:48:39,322 INFO L226 Difference]: Without dead ends: 799 [2023-11-22 18:48:39,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:39,323 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 54 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:39,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 649 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-22 18:48:39,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-11-22 18:48:39,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2023-11-22 18:48:39,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 765 states have (on average 1.4248366013071896) internal successors, (1090), 769 states have internal predecessors, (1090), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1142 transitions. [2023-11-22 18:48:39,339 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1142 transitions. Word has length 136 [2023-11-22 18:48:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:39,340 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1142 transitions. [2023-11-22 18:48:39,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1142 transitions. [2023-11-22 18:48:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-22 18:48:39,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:39,342 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-22 18:48:39,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:39,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 18:48:39,553 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:39,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash 429752270, now seen corresponding path program 1 times [2023-11-22 18:48:39,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:39,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347596124] [2023-11-22 18:48:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:39,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:39,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:39,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:39,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:39,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-22 18:48:40,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:40,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347596124] [2023-11-22 18:48:40,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347596124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:40,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425632530] [2023-11-22 18:48:40,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:40,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:40,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:40,018 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:40,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 18:48:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:40,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:40,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-22 18:48:40,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:40,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425632530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:40,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:40,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:48:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620889582] [2023-11-22 18:48:40,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:40,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:48:40,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:40,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:48:40,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:40,763 INFO L87 Difference]: Start difference. First operand 799 states and 1142 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:42,693 INFO L93 Difference]: Finished difference Result 1409 states and 2043 transitions. [2023-11-22 18:48:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:48:42,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 146 [2023-11-22 18:48:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:42,696 INFO L225 Difference]: With dead ends: 1409 [2023-11-22 18:48:42,696 INFO L226 Difference]: Without dead ends: 1399 [2023-11-22 18:48:42,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:42,697 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 53 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:42,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 647 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-22 18:48:42,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2023-11-22 18:48:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1399. [2023-11-22 18:48:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1365 states have (on average 1.449084249084249) internal successors, (1978), 1369 states have internal predecessors, (1978), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 2030 transitions. [2023-11-22 18:48:42,715 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 2030 transitions. Word has length 146 [2023-11-22 18:48:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:42,715 INFO L495 AbstractCegarLoop]: Abstraction has 1399 states and 2030 transitions. [2023-11-22 18:48:42,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 2030 transitions. [2023-11-22 18:48:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-22 18:48:42,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:42,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:42,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:42,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:42,933 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:42,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash 864093632, now seen corresponding path program 1 times [2023-11-22 18:48:42,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:42,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701457636] [2023-11-22 18:48:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:42,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:43,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:43,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 18:48:43,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:43,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701457636] [2023-11-22 18:48:43,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701457636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:43,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371195487] [2023-11-22 18:48:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:43,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:43,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:43,370 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:43,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 18:48:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:44,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:44,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-22 18:48:44,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:44,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371195487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:44,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:44,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:48:44,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137146561] [2023-11-22 18:48:44,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:44,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:48:44,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:48:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:48:44,094 INFO L87 Difference]: Start difference. First operand 1399 states and 2030 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:46,837 INFO L93 Difference]: Finished difference Result 2673 states and 3931 transitions. [2023-11-22 18:48:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:48:46,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 190 [2023-11-22 18:48:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:46,841 INFO L225 Difference]: With dead ends: 2673 [2023-11-22 18:48:46,841 INFO L226 Difference]: Without dead ends: 1463 [2023-11-22 18:48:46,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:48:46,843 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 3 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:46,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 965 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-22 18:48:46,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2023-11-22 18:48:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1447. [2023-11-22 18:48:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1413 states have (on average 1.4338287331917905) internal successors, (2026), 1417 states have internal predecessors, (2026), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2078 transitions. [2023-11-22 18:48:46,861 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2078 transitions. Word has length 190 [2023-11-22 18:48:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:46,861 INFO L495 AbstractCegarLoop]: Abstraction has 1447 states and 2078 transitions. [2023-11-22 18:48:46,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2078 transitions. [2023-11-22 18:48:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-22 18:48:46,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:46,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:46,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:47,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:47,076 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:47,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:47,077 INFO L85 PathProgramCache]: Analyzing trace with hash 420192958, now seen corresponding path program 1 times [2023-11-22 18:48:47,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:47,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982219245] [2023-11-22 18:48:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:47,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:47,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:47,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 18:48:47,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:47,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982219245] [2023-11-22 18:48:47,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982219245] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:47,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280021284] [2023-11-22 18:48:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:47,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:47,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:47,506 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:47,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 18:48:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:48,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:48,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-22 18:48:48,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:48,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280021284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:48,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:48,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:48:48,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670527130] [2023-11-22 18:48:48,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:48,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:48:48,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:48:48,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:48,346 INFO L87 Difference]: Start difference. First operand 1447 states and 2078 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:50,093 INFO L93 Difference]: Finished difference Result 2705 states and 3915 transitions. [2023-11-22 18:48:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:48:50,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 190 [2023-11-22 18:48:50,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:50,099 INFO L225 Difference]: With dead ends: 2705 [2023-11-22 18:48:50,099 INFO L226 Difference]: Without dead ends: 2695 [2023-11-22 18:48:50,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:50,101 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 43 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:50,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 648 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-22 18:48:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2023-11-22 18:48:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2695. [2023-11-22 18:48:50,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2661 states have (on average 1.4468245020668922) internal successors, (3850), 2665 states have internal predecessors, (3850), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 3902 transitions. [2023-11-22 18:48:50,134 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 3902 transitions. Word has length 190 [2023-11-22 18:48:50,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:50,134 INFO L495 AbstractCegarLoop]: Abstraction has 2695 states and 3902 transitions. [2023-11-22 18:48:50,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:50,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 3902 transitions. [2023-11-22 18:48:50,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-22 18:48:50,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:50,138 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:50,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:50,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:50,352 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:50,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:50,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2126316818, now seen corresponding path program 1 times [2023-11-22 18:48:50,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:50,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056003049] [2023-11-22 18:48:50,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:50,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:50,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-22 18:48:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056003049] [2023-11-22 18:48:50,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056003049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201020784] [2023-11-22 18:48:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:50,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:50,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:50,805 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:50,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 18:48:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:51,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:51,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-22 18:48:51,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:51,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201020784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:51,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:51,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:48:51,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960876359] [2023-11-22 18:48:51,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:51,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:48:51,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:48:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:51,717 INFO L87 Difference]: Start difference. First operand 2695 states and 3902 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:53,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:48:53,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:53,806 INFO L93 Difference]: Finished difference Result 5201 states and 7563 transitions. [2023-11-22 18:48:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:48:53,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 214 [2023-11-22 18:48:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:53,818 INFO L225 Difference]: With dead ends: 5201 [2023-11-22 18:48:53,818 INFO L226 Difference]: Without dead ends: 5191 [2023-11-22 18:48:53,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:53,820 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 38 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:53,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 647 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 18:48:53,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2023-11-22 18:48:53,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5191. [2023-11-22 18:48:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5157 states have (on average 1.4539460926895482) internal successors, (7498), 5161 states have internal predecessors, (7498), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7550 transitions. [2023-11-22 18:48:53,877 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7550 transitions. Word has length 214 [2023-11-22 18:48:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:53,878 INFO L495 AbstractCegarLoop]: Abstraction has 5191 states and 7550 transitions. [2023-11-22 18:48:53,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7550 transitions. [2023-11-22 18:48:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-22 18:48:53,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:53,886 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:53,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:54,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:54,100 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:54,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:54,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1074284310, now seen corresponding path program 1 times [2023-11-22 18:48:54,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:54,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668509011] [2023-11-22 18:48:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:54,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:54,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-22 18:48:54,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:54,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668509011] [2023-11-22 18:48:54,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668509011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:54,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818766656] [2023-11-22 18:48:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:54,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:54,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:54,590 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:54,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-22 18:48:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:55,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:55,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-22 18:48:55,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:55,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818766656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:55,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:55,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:48:55,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363536761] [2023-11-22 18:48:55,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:55,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:48:55,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:55,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:48:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:55,527 INFO L87 Difference]: Start difference. First operand 5191 states and 7550 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:57,507 INFO L93 Difference]: Finished difference Result 10193 states and 14859 transitions. [2023-11-22 18:48:57,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:48:57,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 244 [2023-11-22 18:48:57,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:57,532 INFO L225 Difference]: With dead ends: 10193 [2023-11-22 18:48:57,532 INFO L226 Difference]: Without dead ends: 10183 [2023-11-22 18:48:57,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:57,536 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 34 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:57,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 648 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-22 18:48:57,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10183 states. [2023-11-22 18:48:57,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 10183. [2023-11-22 18:48:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10183 states, 10149 states have (on average 1.4576805596610503) internal successors, (14794), 10153 states have internal predecessors, (14794), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:48:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10183 states to 10183 states and 14846 transitions. [2023-11-22 18:48:57,674 INFO L78 Accepts]: Start accepts. Automaton has 10183 states and 14846 transitions. Word has length 244 [2023-11-22 18:48:57,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:57,674 INFO L495 AbstractCegarLoop]: Abstraction has 10183 states and 14846 transitions. [2023-11-22 18:48:57,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:48:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 10183 states and 14846 transitions. [2023-11-22 18:48:57,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-11-22 18:48:57,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:57,690 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-11-22 18:48:57,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:57,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:57,900 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:57,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:57,900 INFO L85 PathProgramCache]: Analyzing trace with hash 143349432, now seen corresponding path program 1 times [2023-11-22 18:48:57,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:57,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637548790] [2023-11-22 18:48:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:48:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:48:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:48:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:58,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:48:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:48:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:48:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-11-22 18:48:58,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:58,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637548790] [2023-11-22 18:48:58,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637548790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:58,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339267979] [2023-11-22 18:48:58,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:58,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:58,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:58,401 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:58,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-22 18:48:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:59,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:48:59,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-22 18:48:59,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339267979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:59,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:59,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:48:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144822729] [2023-11-22 18:48:59,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:59,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:48:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:48:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:48:59,250 INFO L87 Difference]: Start difference. First operand 10183 states and 14846 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:00,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:49:01,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:49:02,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:49:02,629 INFO L93 Difference]: Finished difference Result 20689 states and 30347 transitions. [2023-11-22 18:49:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:49:02,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 296 [2023-11-22 18:49:02,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:49:02,650 INFO L225 Difference]: With dead ends: 20689 [2023-11-22 18:49:02,651 INFO L226 Difference]: Without dead ends: 10695 [2023-11-22 18:49:02,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:49:02,663 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 3 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:49:02,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 965 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-22 18:49:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10695 states. [2023-11-22 18:49:02,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10695 to 10567. [2023-11-22 18:49:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10567 states, 10533 states have (on average 1.4409949681951961) internal successors, (15178), 10537 states have internal predecessors, (15178), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:49:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 15230 transitions. [2023-11-22 18:49:02,795 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 15230 transitions. Word has length 296 [2023-11-22 18:49:02,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:49:02,796 INFO L495 AbstractCegarLoop]: Abstraction has 10567 states and 15230 transitions. [2023-11-22 18:49:02,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 15230 transitions. [2023-11-22 18:49:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-11-22 18:49:02,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:49:02,812 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-11-22 18:49:02,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-22 18:49:03,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:03,027 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:49:03,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:49:03,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1303231434, now seen corresponding path program 1 times [2023-11-22 18:49:03,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:49:03,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712064886] [2023-11-22 18:49:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:03,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:49:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:49:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:49:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:49:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:03,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:49:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:03,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:49:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:03,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:49:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-11-22 18:49:03,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:49:03,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712064886] [2023-11-22 18:49:03,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712064886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:49:03,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547325427] [2023-11-22 18:49:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:03,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:03,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:49:03,519 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:49:03,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-22 18:49:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:04,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:49:04,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:49:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-11-22 18:49:04,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:49:04,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547325427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:49:04,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:49:04,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:49:04,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598778325] [2023-11-22 18:49:04,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:49:04,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:49:04,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:49:04,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:49:04,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:49:04,546 INFO L87 Difference]: Start difference. First operand 10567 states and 15230 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:49:06,481 INFO L93 Difference]: Finished difference Result 20945 states and 30219 transitions. [2023-11-22 18:49:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:49:06,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 296 [2023-11-22 18:49:06,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:49:06,509 INFO L225 Difference]: With dead ends: 20945 [2023-11-22 18:49:06,509 INFO L226 Difference]: Without dead ends: 20935 [2023-11-22 18:49:06,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:49:06,517 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 23 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:49:06,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 647 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-22 18:49:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20935 states. [2023-11-22 18:49:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20935 to 20935. [2023-11-22 18:49:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20935 states, 20901 states have (on average 1.4427060906176739) internal successors, (30154), 20905 states have internal predecessors, (30154), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:49:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20935 states to 20935 states and 30206 transitions. [2023-11-22 18:49:06,751 INFO L78 Accepts]: Start accepts. Automaton has 20935 states and 30206 transitions. Word has length 296 [2023-11-22 18:49:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:49:06,751 INFO L495 AbstractCegarLoop]: Abstraction has 20935 states and 30206 transitions. [2023-11-22 18:49:06,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 20935 states and 30206 transitions. [2023-11-22 18:49:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-11-22 18:49:06,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:49:06,782 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:49:06,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-22 18:49:06,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-22 18:49:06,997 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:49:06,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:49:06,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1771531892, now seen corresponding path program 1 times [2023-11-22 18:49:06,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:49:06,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299462041] [2023-11-22 18:49:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:06,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:49:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:07,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:49:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:49:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:49:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:07,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:49:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:49:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:07,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:49:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 18:49:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:49:07,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299462041] [2023-11-22 18:49:07,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299462041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:49:07,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057175684] [2023-11-22 18:49:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:07,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:07,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:49:07,579 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:49:07,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-22 18:49:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:08,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:49:08,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:49:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2023-11-22 18:49:08,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:49:08,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057175684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:49:08,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:49:08,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:49:08,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88472330] [2023-11-22 18:49:08,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:49:08,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:49:08,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:49:08,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:49:08,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:49:08,585 INFO L87 Difference]: Start difference. First operand 20935 states and 30206 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:10,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:49:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:49:10,820 INFO L93 Difference]: Finished difference Result 31569 states and 45707 transitions. [2023-11-22 18:49:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:49:10,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 354 [2023-11-22 18:49:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:49:10,850 INFO L225 Difference]: With dead ends: 31569 [2023-11-22 18:49:10,850 INFO L226 Difference]: Without dead ends: 21191 [2023-11-22 18:49:10,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:49:10,866 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 0 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:49:10,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 647 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-22 18:49:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21191 states. [2023-11-22 18:49:11,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21191 to 21191. [2023-11-22 18:49:11,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21191 states, 21157 states have (on average 1.4373493406437585) internal successors, (30410), 21161 states have internal predecessors, (30410), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:49:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21191 states to 21191 states and 30462 transitions. [2023-11-22 18:49:11,091 INFO L78 Accepts]: Start accepts. Automaton has 21191 states and 30462 transitions. Word has length 354 [2023-11-22 18:49:11,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:49:11,091 INFO L495 AbstractCegarLoop]: Abstraction has 21191 states and 30462 transitions. [2023-11-22 18:49:11,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:11,091 INFO L276 IsEmpty]: Start isEmpty. Operand 21191 states and 30462 transitions. [2023-11-22 18:49:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-11-22 18:49:11,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:49:11,114 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:49:11,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-22 18:49:11,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-22 18:49:11,340 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:49:11,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:49:11,341 INFO L85 PathProgramCache]: Analyzing trace with hash 196273034, now seen corresponding path program 1 times [2023-11-22 18:49:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:49:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371247557] [2023-11-22 18:49:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:49:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:11,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:49:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:49:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:11,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:49:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:11,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:49:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:11,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 18:49:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:49:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 18:49:11,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:49:11,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371247557] [2023-11-22 18:49:11,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371247557] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:49:11,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838158784] [2023-11-22 18:49:11,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:11,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:11,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:49:11,851 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:49:11,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-22 18:49:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:12,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:49:12,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:49:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 18:49:12,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:49:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 18:49:12,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838158784] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:49:12,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:49:12,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 4] total 8 [2023-11-22 18:49:12,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762501328] [2023-11-22 18:49:12,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:49:12,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:49:12,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:49:12,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:49:12,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:49:12,796 INFO L87 Difference]: Start difference. First operand 21191 states and 30462 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 1 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-22 18:49:16,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:49:18,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:49:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:49:19,703 INFO L93 Difference]: Finished difference Result 42382 states and 60926 transitions. [2023-11-22 18:49:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:49:19,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 1 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 354 [2023-11-22 18:49:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:49:19,727 INFO L225 Difference]: With dead ends: 42382 [2023-11-22 18:49:19,727 INFO L226 Difference]: Without dead ends: 21194 [2023-11-22 18:49:19,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:49:19,748 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:49:19,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2121 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-22 18:49:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21194 states. [2023-11-22 18:49:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21194 to 21194. [2023-11-22 18:49:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21194 states, 21160 states have (on average 1.4372873345935728) internal successors, (30413), 21164 states have internal predecessors, (30413), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:49:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21194 states to 21194 states and 30465 transitions. [2023-11-22 18:49:19,967 INFO L78 Accepts]: Start accepts. Automaton has 21194 states and 30465 transitions. Word has length 354 [2023-11-22 18:49:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:49:19,967 INFO L495 AbstractCegarLoop]: Abstraction has 21194 states and 30465 transitions. [2023-11-22 18:49:19,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 1 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-22 18:49:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand 21194 states and 30465 transitions. [2023-11-22 18:49:19,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-11-22 18:49:19,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:49:19,989 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:49:20,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-22 18:49:20,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-22 18:49:20,216 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:49:20,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:49:20,216 INFO L85 PathProgramCache]: Analyzing trace with hash 408445191, now seen corresponding path program 2 times [2023-11-22 18:49:20,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:49:20,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145175719] [2023-11-22 18:49:20,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:20,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:49:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:49:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:20,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:49:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:49:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:20,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:49:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-22 18:49:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 18:49:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:20,857 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2023-11-22 18:49:20,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:49:20,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145175719] [2023-11-22 18:49:20,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145175719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:49:20,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538891548] [2023-11-22 18:49:20,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:49:20,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:20,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:49:20,860 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:49:20,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-22 18:49:23,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:49:23,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:49:23,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:49:23,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:49:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 18:49:23,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:49:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 18:49:23,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538891548] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:49:23,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:49:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 15 [2023-11-22 18:49:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492862371] [2023-11-22 18:49:23,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:49:23,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 18:49:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:49:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 18:49:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:49:23,407 INFO L87 Difference]: Start difference. First operand 21194 states and 30465 transitions. Second operand has 15 states, 15 states have (on average 10.6) internal successors, (159), 14 states have internal predecessors, (159), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:49:27,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:49:27,754 INFO L93 Difference]: Finished difference Result 42389 states and 60941 transitions. [2023-11-22 18:49:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 18:49:27,754 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.6) internal successors, (159), 14 states have internal predecessors, (159), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 357 [2023-11-22 18:49:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:49:27,776 INFO L225 Difference]: With dead ends: 42389 [2023-11-22 18:49:27,776 INFO L226 Difference]: Without dead ends: 21201 [2023-11-22 18:49:27,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-22 18:49:27,797 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:49:27,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1470 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-22 18:49:27,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21201 states. [2023-11-22 18:49:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21201 to 21201. [2023-11-22 18:49:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21201 states, 21167 states have (on average 1.4371427221618558) internal successors, (30420), 21171 states have internal predecessors, (30420), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:49:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21201 states to 21201 states and 30472 transitions. [2023-11-22 18:49:28,103 INFO L78 Accepts]: Start accepts. Automaton has 21201 states and 30472 transitions. Word has length 357 [2023-11-22 18:49:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:49:28,104 INFO L495 AbstractCegarLoop]: Abstraction has 21201 states and 30472 transitions. [2023-11-22 18:49:28,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.6) internal successors, (159), 14 states have internal predecessors, (159), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 18:49:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 21201 states and 30472 transitions. [2023-11-22 18:49:28,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-22 18:49:28,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:49:28,124 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:49:28,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-22 18:49:28,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-22 18:49:28,355 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:49:28,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:49:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1786159583, now seen corresponding path program 3 times [2023-11-22 18:49:28,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:49:28,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660212091] [2023-11-22 18:49:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:28,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:49:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:28,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:49:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 18:49:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:28,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:49:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:28,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-22 18:49:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 18:49:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:28,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 18:49:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2023-11-22 18:49:28,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:49:28,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660212091] [2023-11-22 18:49:28,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660212091] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:49:28,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496979610] [2023-11-22 18:49:28,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:49:28,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:28,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:49:28,841 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:49:28,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-22 18:49:36,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 18:49:36,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:49:36,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:49:36,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:49:36,183 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 23 treesize of output 7 [2023-11-22 18:49:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-11-22 18:49:36,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:49:36,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496979610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:49:36,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:49:36,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-22 18:49:36,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102136138] [2023-11-22 18:49:36,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:49:36,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:49:36,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:49:36,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:49:36,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:49:36,208 INFO L87 Difference]: Start difference. First operand 21201 states and 30472 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:38,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:49:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:49:40,384 INFO L93 Difference]: Finished difference Result 60123 states and 85269 transitions. [2023-11-22 18:49:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:49:40,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 367 [2023-11-22 18:49:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:49:40,426 INFO L225 Difference]: With dead ends: 60123 [2023-11-22 18:49:40,426 INFO L226 Difference]: Without dead ends: 39121 [2023-11-22 18:49:40,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-22 18:49:40,449 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 88 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:49:40,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1122 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-22 18:49:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39121 states. [2023-11-22 18:49:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39121 to 22737. [2023-11-22 18:49:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22737 states, 22703 states have (on average 1.4413954102981985) internal successors, (32724), 22707 states have internal predecessors, (32724), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:49:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22737 states to 22737 states and 32776 transitions. [2023-11-22 18:49:40,745 INFO L78 Accepts]: Start accepts. Automaton has 22737 states and 32776 transitions. Word has length 367 [2023-11-22 18:49:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:49:40,746 INFO L495 AbstractCegarLoop]: Abstraction has 22737 states and 32776 transitions. [2023-11-22 18:49:40,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 22737 states and 32776 transitions. [2023-11-22 18:49:40,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-22 18:49:40,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:49:40,768 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:49:40,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-22 18:49:40,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-22 18:49:40,984 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:49:40,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:49:40,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1926708193, now seen corresponding path program 1 times [2023-11-22 18:49:40,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:49:40,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629286099] [2023-11-22 18:49:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:40,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:49:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:41,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:49:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 18:49:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:49:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-22 18:49:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:41,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 18:49:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:41,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 18:49:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2023-11-22 18:49:41,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:49:41,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629286099] [2023-11-22 18:49:41,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629286099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:49:41,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886723172] [2023-11-22 18:49:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:41,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:41,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:49:41,569 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:49:41,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-22 18:49:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:42,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:49:42,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:49:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2023-11-22 18:49:42,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:49:42,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886723172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:49:42,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:49:42,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:49:42,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020384405] [2023-11-22 18:49:42,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:49:42,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:49:42,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:49:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:49:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:49:42,593 INFO L87 Difference]: Start difference. First operand 22737 states and 32776 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:43,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:49:45,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:49:45,439 INFO L93 Difference]: Finished difference Result 46043 states and 66581 transitions. [2023-11-22 18:49:45,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:49:45,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 367 [2023-11-22 18:49:45,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:49:45,464 INFO L225 Difference]: With dead ends: 46043 [2023-11-22 18:49:45,464 INFO L226 Difference]: Without dead ends: 23505 [2023-11-22 18:49:45,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:49:45,477 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 8 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:49:45,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 977 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-22 18:49:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23505 states. [2023-11-22 18:49:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23505 to 22737. [2023-11-22 18:49:45,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22737 states, 22703 states have (on average 1.4301193674844734) internal successors, (32468), 22707 states have internal predecessors, (32468), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:49:45,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22737 states to 22737 states and 32520 transitions. [2023-11-22 18:49:45,739 INFO L78 Accepts]: Start accepts. Automaton has 22737 states and 32520 transitions. Word has length 367 [2023-11-22 18:49:45,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:49:45,740 INFO L495 AbstractCegarLoop]: Abstraction has 22737 states and 32520 transitions. [2023-11-22 18:49:45,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:45,740 INFO L276 IsEmpty]: Start isEmpty. Operand 22737 states and 32520 transitions. [2023-11-22 18:49:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-22 18:49:45,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:49:45,764 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:49:45,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-22 18:49:45,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:45,980 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:49:45,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:49:45,981 INFO L85 PathProgramCache]: Analyzing trace with hash 121269859, now seen corresponding path program 1 times [2023-11-22 18:49:45,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:49:45,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861466599] [2023-11-22 18:49:45,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:45,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:49:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:46,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:49:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:46,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 18:49:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:46,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:49:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:46,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-22 18:49:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:46,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 18:49:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 18:49:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2023-11-22 18:49:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:49:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861466599] [2023-11-22 18:49:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861466599] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:49:46,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402255220] [2023-11-22 18:49:46,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:46,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:46,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:49:46,476 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:49:46,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-22 18:49:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:47,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:49:47,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:49:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2023-11-22 18:49:47,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:49:47,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402255220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:49:47,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:49:47,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:49:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479973281] [2023-11-22 18:49:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:49:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:49:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:49:47,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:49:47,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:49:47,560 INFO L87 Difference]: Start difference. First operand 22737 states and 32520 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:50,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:49:50,260 INFO L93 Difference]: Finished difference Result 46299 states and 66581 transitions. [2023-11-22 18:49:50,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:49:50,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 367 [2023-11-22 18:49:50,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:49:50,286 INFO L225 Difference]: With dead ends: 46299 [2023-11-22 18:49:50,286 INFO L226 Difference]: Without dead ends: 23761 [2023-11-22 18:49:50,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:49:50,304 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 2 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:49:50,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 968 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-22 18:49:50,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23761 states. [2023-11-22 18:49:50,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23761 to 23505. [2023-11-22 18:49:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23505 states, 23471 states have (on average 1.3942311789016233) internal successors, (32724), 23475 states have internal predecessors, (32724), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 18:49:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23505 states to 23505 states and 32776 transitions. [2023-11-22 18:49:50,522 INFO L78 Accepts]: Start accepts. Automaton has 23505 states and 32776 transitions. Word has length 367 [2023-11-22 18:49:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:49:50,523 INFO L495 AbstractCegarLoop]: Abstraction has 23505 states and 32776 transitions. [2023-11-22 18:49:50,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:49:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 23505 states and 32776 transitions. [2023-11-22 18:49:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-22 18:49:50,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:49:50,545 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:49:50,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-22 18:49:50,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:50,761 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:49:50,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:49:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash 543971685, now seen corresponding path program 1 times [2023-11-22 18:49:50,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:49:50,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301025894] [2023-11-22 18:49:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:50,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:49:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:51,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:49:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 18:49:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:49:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:51,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-22 18:49:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 18:49:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:51,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 18:49:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2023-11-22 18:49:51,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:49:51,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301025894] [2023-11-22 18:49:51,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301025894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:49:51,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076653383] [2023-11-22 18:49:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:49:51,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:49:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:49:51,298 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:49:51,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-22 18:49:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:49:52,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 18:49:52,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:49:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2023-11-22 18:49:52,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:49:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2023-11-22 18:49:52,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076653383] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:49:52,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:49:52,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 13] total 19 [2023-11-22 18:49:52,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224322623] [2023-11-22 18:49:52,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:49:52,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-22 18:49:52,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:49:52,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-22 18:49:52,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2023-11-22 18:49:52,542 INFO L87 Difference]: Start difference. First operand 23505 states and 32776 transitions. Second operand has 19 states, 19 states have (on average 8.947368421052632) internal successors, (170), 18 states have internal predecessors, (170), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 18:49:56,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:49:58,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:50:00,154 INFO L93 Difference]: Finished difference Result 47015 states and 65565 transitions. [2023-11-22 18:50:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 18:50:00,155 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.947368421052632) internal successors, (170), 18 states have internal predecessors, (170), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 367 [2023-11-22 18:50:00,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:50:00,177 INFO L225 Difference]: With dead ends: 47015 [2023-11-22 18:50:00,177 INFO L226 Difference]: Without dead ends: 23522 [2023-11-22 18:50:00,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 723 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2023-11-22 18:50:00,197 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 11 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:50:00,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2725 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-22 18:50:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23522 states. [2023-11-22 18:50:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23522 to 23516. [2023-11-22 18:50:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23516 states, 23481 states have (on average 1.3941058728333546) internal successors, (32735), 23485 states have internal predecessors, (32735), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-22 18:50:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23516 states to 23516 states and 32789 transitions. [2023-11-22 18:50:00,421 INFO L78 Accepts]: Start accepts. Automaton has 23516 states and 32789 transitions. Word has length 367 [2023-11-22 18:50:00,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:50:00,422 INFO L495 AbstractCegarLoop]: Abstraction has 23516 states and 32789 transitions. [2023-11-22 18:50:00,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.947368421052632) internal successors, (170), 18 states have internal predecessors, (170), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-22 18:50:00,422 INFO L276 IsEmpty]: Start isEmpty. Operand 23516 states and 32789 transitions. [2023-11-22 18:50:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-22 18:50:00,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:50:00,443 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:50:00,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-22 18:50:00,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:50:00,643 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:50:00,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:50:00,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1514670133, now seen corresponding path program 2 times [2023-11-22 18:50:00,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:50:00,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847088687] [2023-11-22 18:50:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:00,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:50:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:01,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:50:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:50:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:50:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:50:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:01,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:50:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 18:50:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2023-11-22 18:50:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:50:01,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847088687] [2023-11-22 18:50:01,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847088687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:50:01,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986446112] [2023-11-22 18:50:01,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:50:01,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:50:01,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:50:01,246 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:50:01,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-22 18:50:03,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:50:03,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:50:03,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 18:50:03,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:50:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2023-11-22 18:50:03,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:50:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2023-11-22 18:50:03,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986446112] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:50:03,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:50:03,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-22 18:50:03,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006459693] [2023-11-22 18:50:03,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:50:03,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 18:50:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:50:03,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 18:50:03,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:50:03,819 INFO L87 Difference]: Start difference. First operand 23516 states and 32789 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:50:06,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:08,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:50:09,945 INFO L93 Difference]: Finished difference Result 47028 states and 65580 transitions. [2023-11-22 18:50:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 18:50:09,945 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 374 [2023-11-22 18:50:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:50:09,964 INFO L225 Difference]: With dead ends: 47028 [2023-11-22 18:50:09,964 INFO L226 Difference]: Without dead ends: 23557 [2023-11-22 18:50:09,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:50:09,983 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 73 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:50:09,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1731 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-22 18:50:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2023-11-22 18:50:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23551. [2023-11-22 18:50:10,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23551 states, 23511 states have (on average 1.3938156607545404) internal successors, (32770), 23515 states have internal predecessors, (32770), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 18:50:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23551 states to 23551 states and 32834 transitions. [2023-11-22 18:50:10,267 INFO L78 Accepts]: Start accepts. Automaton has 23551 states and 32834 transitions. Word has length 374 [2023-11-22 18:50:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:50:10,267 INFO L495 AbstractCegarLoop]: Abstraction has 23551 states and 32834 transitions. [2023-11-22 18:50:10,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:50:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand 23551 states and 32834 transitions. [2023-11-22 18:50:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-11-22 18:50:10,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:50:10,287 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:50:10,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-22 18:50:10,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-22 18:50:10,495 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:50:10,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:50:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1843475819, now seen corresponding path program 3 times [2023-11-22 18:50:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:50:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907928306] [2023-11-22 18:50:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:50:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:50:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:10,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:50:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:50:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:10,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:50:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:50:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 18:50:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-11-22 18:50:11,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:50:11,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907928306] [2023-11-22 18:50:11,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907928306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:50:11,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639446109] [2023-11-22 18:50:11,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:50:11,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:50:11,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:50:11,001 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:50:11,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-22 18:50:13,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 18:50:13,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:50:13,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 18:50:13,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:50:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2023-11-22 18:50:13,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:50:13,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639446109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:50:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:50:13,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2023-11-22 18:50:13,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684379409] [2023-11-22 18:50:13,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:50:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:50:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:50:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:50:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:50:13,426 INFO L87 Difference]: Start difference. First operand 23551 states and 32834 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:50:14,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:15,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:16,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:17,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:20,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:50:20,650 INFO L93 Difference]: Finished difference Result 71689 states and 99151 transitions. [2023-11-22 18:50:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 18:50:20,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 389 [2023-11-22 18:50:20,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:50:20,714 INFO L225 Difference]: With dead ends: 71689 [2023-11-22 18:50:20,714 INFO L226 Difference]: Without dead ends: 48383 [2023-11-22 18:50:20,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:50:20,750 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 120 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:50:20,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1665 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-22 18:50:20,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48383 states. [2023-11-22 18:50:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48383 to 27135. [2023-11-22 18:50:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27135 states, 27095 states have (on average 1.398412991326813) internal successors, (37890), 27099 states have internal predecessors, (37890), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 18:50:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27135 states to 27135 states and 37954 transitions. [2023-11-22 18:50:21,133 INFO L78 Accepts]: Start accepts. Automaton has 27135 states and 37954 transitions. Word has length 389 [2023-11-22 18:50:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:50:21,134 INFO L495 AbstractCegarLoop]: Abstraction has 27135 states and 37954 transitions. [2023-11-22 18:50:21,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:50:21,134 INFO L276 IsEmpty]: Start isEmpty. Operand 27135 states and 37954 transitions. [2023-11-22 18:50:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-11-22 18:50:21,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:50:21,161 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:50:21,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-22 18:50:21,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:50:21,362 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:50:21,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:50:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1141875945, now seen corresponding path program 1 times [2023-11-22 18:50:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:50:21,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643617801] [2023-11-22 18:50:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:21,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:50:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:50:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:21,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:50:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:50:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:50:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:21,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:50:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 18:50:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-11-22 18:50:22,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:50:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643617801] [2023-11-22 18:50:22,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643617801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:50:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270692407] [2023-11-22 18:50:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:22,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:50:22,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:50:22,061 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:50:22,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-22 18:50:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:23,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:50:23,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:50:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2023-11-22 18:50:23,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:50:23,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270692407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:50:23,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:50:23,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:50:23,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261670227] [2023-11-22 18:50:23,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:50:23,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:50:23,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:50:23,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:50:23,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:50:23,213 INFO L87 Difference]: Start difference. First operand 27135 states and 37954 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:50:26,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:50:26,239 INFO L93 Difference]: Finished difference Result 56841 states and 80207 transitions. [2023-11-22 18:50:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:50:26,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 389 [2023-11-22 18:50:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:50:26,274 INFO L225 Difference]: With dead ends: 56841 [2023-11-22 18:50:26,274 INFO L226 Difference]: Without dead ends: 29951 [2023-11-22 18:50:26,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:50:26,298 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 8 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:50:26,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 977 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-22 18:50:26,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29951 states. [2023-11-22 18:50:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29951 to 27647. [2023-11-22 18:50:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27647 states, 27607 states have (on average 1.3910240156482052) internal successors, (38402), 27611 states have internal predecessors, (38402), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 18:50:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27647 states to 27647 states and 38466 transitions. [2023-11-22 18:50:26,561 INFO L78 Accepts]: Start accepts. Automaton has 27647 states and 38466 transitions. Word has length 389 [2023-11-22 18:50:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:50:26,562 INFO L495 AbstractCegarLoop]: Abstraction has 27647 states and 38466 transitions. [2023-11-22 18:50:26,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:50:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 27647 states and 38466 transitions. [2023-11-22 18:50:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-11-22 18:50:26,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:50:26,588 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:50:26,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-22 18:50:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-22 18:50:26,790 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:50:26,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:50:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash 244327449, now seen corresponding path program 1 times [2023-11-22 18:50:26,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:50:26,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508196815] [2023-11-22 18:50:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:26,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:50:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:50:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:27,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:50:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:27,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:50:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:27,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:50:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:50:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 18:50:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-11-22 18:50:27,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:50:27,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508196815] [2023-11-22 18:50:27,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508196815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:50:27,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989792090] [2023-11-22 18:50:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:27,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:50:27,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:50:27,450 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:50:27,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-22 18:50:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:28,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:50:28,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:50:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-11-22 18:50:28,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:50:28,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989792090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:50:28,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:50:28,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 18:50:28,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449871698] [2023-11-22 18:50:28,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:50:28,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:50:28,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:50:28,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:50:28,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:50:28,714 INFO L87 Difference]: Start difference. First operand 27647 states and 38466 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:50:30,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:31,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:32,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:50:32,319 INFO L93 Difference]: Finished difference Result 57097 states and 80207 transitions. [2023-11-22 18:50:32,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:50:32,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 389 [2023-11-22 18:50:32,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:50:32,359 INFO L225 Difference]: With dead ends: 57097 [2023-11-22 18:50:32,359 INFO L226 Difference]: Without dead ends: 29695 [2023-11-22 18:50:32,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:50:32,388 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 2 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:50:32,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 968 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-22 18:50:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29695 states. [2023-11-22 18:50:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29695 to 29183. [2023-11-22 18:50:32,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29183 states, 29143 states have (on average 1.3704148509075935) internal successors, (39938), 29147 states have internal predecessors, (39938), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 18:50:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29183 states to 29183 states and 40002 transitions. [2023-11-22 18:50:32,783 INFO L78 Accepts]: Start accepts. Automaton has 29183 states and 40002 transitions. Word has length 389 [2023-11-22 18:50:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:50:32,784 INFO L495 AbstractCegarLoop]: Abstraction has 29183 states and 40002 transitions. [2023-11-22 18:50:32,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:50:32,784 INFO L276 IsEmpty]: Start isEmpty. Operand 29183 states and 40002 transitions. [2023-11-22 18:50:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-11-22 18:50:32,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:50:32,814 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:50:32,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-22 18:50:33,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:50:33,015 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:50:33,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:50:33,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2127411813, now seen corresponding path program 1 times [2023-11-22 18:50:33,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:50:33,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14994597] [2023-11-22 18:50:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:33,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:50:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:33,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:50:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:50:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:50:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:50:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:33,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:50:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:33,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 18:50:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-11-22 18:50:33,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:50:33,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14994597] [2023-11-22 18:50:33,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14994597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:50:33,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226918341] [2023-11-22 18:50:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:33,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:50:33,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:50:33,567 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:50:33,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-22 18:50:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:34,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 18:50:34,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:50:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2023-11-22 18:50:34,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:50:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2023-11-22 18:50:35,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226918341] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:50:35,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:50:35,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-22 18:50:35,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483587796] [2023-11-22 18:50:35,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:50:35,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-22 18:50:35,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:50:35,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-22 18:50:35,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2023-11-22 18:50:35,105 INFO L87 Difference]: Start difference. First operand 29183 states and 40002 transitions. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 18 states have internal predecessors, (195), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:50:38,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:50:42,215 INFO L93 Difference]: Finished difference Result 58362 states and 80010 transitions. [2023-11-22 18:50:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 18:50:42,216 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 18 states have internal predecessors, (195), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 389 [2023-11-22 18:50:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:50:42,246 INFO L225 Difference]: With dead ends: 58362 [2023-11-22 18:50:42,246 INFO L226 Difference]: Without dead ends: 29252 [2023-11-22 18:50:42,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2023-11-22 18:50:42,261 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 127 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:50:42,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2082 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-22 18:50:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29252 states. [2023-11-22 18:50:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29252 to 29246. [2023-11-22 18:50:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29246 states, 29197 states have (on average 1.3700380176045484) internal successors, (40001), 29201 states have internal predecessors, (40001), 41 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-22 18:50:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29246 states to 29246 states and 40083 transitions. [2023-11-22 18:50:42,528 INFO L78 Accepts]: Start accepts. Automaton has 29246 states and 40083 transitions. Word has length 389 [2023-11-22 18:50:42,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:50:42,528 INFO L495 AbstractCegarLoop]: Abstraction has 29246 states and 40083 transitions. [2023-11-22 18:50:42,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 18 states have internal predecessors, (195), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:50:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 29246 states and 40083 transitions. [2023-11-22 18:50:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-22 18:50:42,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:50:42,558 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:50:42,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-11-22 18:50:42,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-22 18:50:42,759 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:50:42,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:50:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash -137204383, now seen corresponding path program 2 times [2023-11-22 18:50:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:50:42,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002741620] [2023-11-22 18:50:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:50:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:43,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:50:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:50:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:50:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:50:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:43,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:50:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 18:50:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2023-11-22 18:50:43,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:50:43,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002741620] [2023-11-22 18:50:43,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002741620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:50:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642859177] [2023-11-22 18:50:43,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:50:43,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:50:43,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:50:43,294 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:50:43,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-22 18:50:46,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:50:46,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:50:46,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 18:50:46,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:50:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1150 trivial. 0 not checked. [2023-11-22 18:50:46,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:50:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2023-11-22 18:50:46,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642859177] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:50:46,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:50:46,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-22 18:50:46,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276234178] [2023-11-22 18:50:46,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:50:46,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 18:50:46,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:50:46,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 18:50:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:50:46,510 INFO L87 Difference]: Start difference. First operand 29246 states and 40083 transitions. Second operand has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 10 states have internal predecessors, (171), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:50:47,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:49,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:51,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:52,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:50:52,994 INFO L93 Difference]: Finished difference Result 58388 states and 80039 transitions. [2023-11-22 18:50:52,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 18:50:52,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 10 states have internal predecessors, (171), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 416 [2023-11-22 18:50:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:50:53,022 INFO L225 Difference]: With dead ends: 58388 [2023-11-22 18:50:53,022 INFO L226 Difference]: Without dead ends: 29287 [2023-11-22 18:50:53,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 837 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:50:53,048 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 54 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:50:53,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1436 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-22 18:50:53,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29287 states. [2023-11-22 18:50:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29287 to 29281. [2023-11-22 18:50:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29281 states, 29227 states have (on average 1.3698292674581722) internal successors, (40036), 29231 states have internal predecessors, (40036), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 18:50:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29281 states to 29281 states and 40128 transitions. [2023-11-22 18:50:53,384 INFO L78 Accepts]: Start accepts. Automaton has 29281 states and 40128 transitions. Word has length 416 [2023-11-22 18:50:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:50:53,384 INFO L495 AbstractCegarLoop]: Abstraction has 29281 states and 40128 transitions. [2023-11-22 18:50:53,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 10 states have internal predecessors, (171), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:50:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 29281 states and 40128 transitions. [2023-11-22 18:50:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-22 18:50:53,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:50:53,416 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:50:53,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-22 18:50:53,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-22 18:50:53,617 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:50:53,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:50:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 273722123, now seen corresponding path program 3 times [2023-11-22 18:50:53,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:50:53,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620884476] [2023-11-22 18:50:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:53,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:50:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:54,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:50:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:50:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:50:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:50:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:50:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:50:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2023-11-22 18:50:54,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:50:54,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620884476] [2023-11-22 18:50:54,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620884476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:50:54,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:50:54,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:50:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589272812] [2023-11-22 18:50:54,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:50:54,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:50:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:50:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:50:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:50:54,351 INFO L87 Difference]: Start difference. First operand 29281 states and 40128 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:50:57,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:58,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:50:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:50:58,713 INFO L93 Difference]: Finished difference Result 78187 states and 106957 transitions. [2023-11-22 18:50:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:50:58,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2023-11-22 18:50:58,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:50:58,764 INFO L225 Difference]: With dead ends: 78187 [2023-11-22 18:50:58,765 INFO L226 Difference]: Without dead ends: 49249 [2023-11-22 18:50:58,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:50:58,795 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 180 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:50:58,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 997 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-22 18:50:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49249 states. [2023-11-22 18:50:59,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49249 to 30817. [2023-11-22 18:50:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30817 states, 30763 states have (on average 1.3430419659981145) internal successors, (41316), 30767 states have internal predecessors, (41316), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 18:50:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30817 states to 30817 states and 41408 transitions. [2023-11-22 18:50:59,144 INFO L78 Accepts]: Start accepts. Automaton has 30817 states and 41408 transitions. Word has length 431 [2023-11-22 18:50:59,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:50:59,144 INFO L495 AbstractCegarLoop]: Abstraction has 30817 states and 41408 transitions. [2023-11-22 18:50:59,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:50:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 30817 states and 41408 transitions. [2023-11-22 18:50:59,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-22 18:50:59,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:50:59,176 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:50:59,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-22 18:50:59,176 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:50:59,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:50:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1912785237, now seen corresponding path program 1 times [2023-11-22 18:50:59,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:50:59,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243687422] [2023-11-22 18:50:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:50:59,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:50:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:50:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:50:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:59,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:50:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:59,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:50:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:59,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:50:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:59,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:50:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:50:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2023-11-22 18:50:59,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:50:59,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243687422] [2023-11-22 18:50:59,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243687422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:50:59,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:50:59,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:50:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915270133] [2023-11-22 18:50:59,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:50:59,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:50:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:50:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:50:59,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:50:59,897 INFO L87 Difference]: Start difference. First operand 30817 states and 41408 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:01,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:51:04,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:51:04,841 INFO L93 Difference]: Finished difference Result 79723 states and 107725 transitions. [2023-11-22 18:51:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:51:04,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2023-11-22 18:51:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:51:04,893 INFO L225 Difference]: With dead ends: 79723 [2023-11-22 18:51:04,893 INFO L226 Difference]: Without dead ends: 49249 [2023-11-22 18:51:04,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:51:04,922 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 84 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:51:04,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1267 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-22 18:51:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49249 states. [2023-11-22 18:51:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49249 to 32353. [2023-11-22 18:51:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32353 states, 32299 states have (on average 1.3188024397040157) internal successors, (42596), 32303 states have internal predecessors, (42596), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 18:51:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32353 states to 32353 states and 42688 transitions. [2023-11-22 18:51:05,267 INFO L78 Accepts]: Start accepts. Automaton has 32353 states and 42688 transitions. Word has length 431 [2023-11-22 18:51:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:51:05,267 INFO L495 AbstractCegarLoop]: Abstraction has 32353 states and 42688 transitions. [2023-11-22 18:51:05,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 32353 states and 42688 transitions. [2023-11-22 18:51:05,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-22 18:51:05,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:51:05,297 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:51:05,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-22 18:51:05,298 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:51:05,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:51:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash 380485153, now seen corresponding path program 1 times [2023-11-22 18:51:05,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:51:05,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120467684] [2023-11-22 18:51:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:51:05,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:51:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:51:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:05,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:51:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:51:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:51:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:51:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:05,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:51:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2023-11-22 18:51:05,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:51:05,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120467684] [2023-11-22 18:51:05,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120467684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:51:05,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:51:05,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:51:05,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54863245] [2023-11-22 18:51:05,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:51:05,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:51:05,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:51:05,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:51:05,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:51:05,995 INFO L87 Difference]: Start difference. First operand 32353 states and 42688 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 5 states have internal predecessors, (181), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:08,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:51:10,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:51:10,624 INFO L93 Difference]: Finished difference Result 81515 states and 108493 transitions. [2023-11-22 18:51:10,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:51:10,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 5 states have internal predecessors, (181), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2023-11-22 18:51:10,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:51:10,676 INFO L225 Difference]: With dead ends: 81515 [2023-11-22 18:51:10,676 INFO L226 Difference]: Without dead ends: 49505 [2023-11-22 18:51:10,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:51:10,707 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 61 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:51:10,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1295 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-22 18:51:10,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49505 states. [2023-11-22 18:51:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49505 to 40545. [2023-11-22 18:51:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40545 states, 40491 states have (on average 1.3112049591267194) internal successors, (53092), 40495 states have internal predecessors, (53092), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 18:51:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40545 states to 40545 states and 53184 transitions. [2023-11-22 18:51:11,101 INFO L78 Accepts]: Start accepts. Automaton has 40545 states and 53184 transitions. Word has length 431 [2023-11-22 18:51:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:51:11,101 INFO L495 AbstractCegarLoop]: Abstraction has 40545 states and 53184 transitions. [2023-11-22 18:51:11,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 5 states have internal predecessors, (181), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:11,102 INFO L276 IsEmpty]: Start isEmpty. Operand 40545 states and 53184 transitions. [2023-11-22 18:51:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-22 18:51:11,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:51:11,137 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:51:11,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-22 18:51:11,137 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:51:11,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:51:11,137 INFO L85 PathProgramCache]: Analyzing trace with hash 157069479, now seen corresponding path program 1 times [2023-11-22 18:51:11,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:51:11,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522442434] [2023-11-22 18:51:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:51:11,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:51:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:51:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:11,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:51:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:51:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:11,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:51:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:11,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:51:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:11,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:51:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-22 18:51:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:51:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522442434] [2023-11-22 18:51:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522442434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:51:11,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:51:11,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:51:11,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379205880] [2023-11-22 18:51:11,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:51:11,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:51:11,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:51:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:51:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:51:11,834 INFO L87 Difference]: Start difference. First operand 40545 states and 53184 transitions. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 5 states have internal predecessors, (191), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:15,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:51:15,620 INFO L93 Difference]: Finished difference Result 89195 states and 118221 transitions. [2023-11-22 18:51:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:51:15,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 5 states have internal predecessors, (191), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2023-11-22 18:51:15,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:51:15,669 INFO L225 Difference]: With dead ends: 89195 [2023-11-22 18:51:15,670 INFO L226 Difference]: Without dead ends: 48993 [2023-11-22 18:51:15,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:51:15,706 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 78 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:51:15,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1021 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-22 18:51:15,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48993 states. [2023-11-22 18:51:16,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48993 to 45665. [2023-11-22 18:51:16,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45665 states, 45611 states have (on average 1.3211725241718006) internal successors, (60260), 45615 states have internal predecessors, (60260), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 18:51:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45665 states to 45665 states and 60352 transitions. [2023-11-22 18:51:16,200 INFO L78 Accepts]: Start accepts. Automaton has 45665 states and 60352 transitions. Word has length 431 [2023-11-22 18:51:16,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:51:16,200 INFO L495 AbstractCegarLoop]: Abstraction has 45665 states and 60352 transitions. [2023-11-22 18:51:16,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 5 states have internal predecessors, (191), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 45665 states and 60352 transitions. [2023-11-22 18:51:16,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-22 18:51:16,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:51:16,251 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:51:16,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-22 18:51:16,251 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:51:16,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:51:16,252 INFO L85 PathProgramCache]: Analyzing trace with hash 933317033, now seen corresponding path program 1 times [2023-11-22 18:51:16,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:51:16,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029888169] [2023-11-22 18:51:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:51:16,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:51:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:16,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:51:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:16,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:51:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:51:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:16,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:51:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:16,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:51:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:51:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-22 18:51:16,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:51:16,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029888169] [2023-11-22 18:51:16,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029888169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:51:16,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:51:16,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:51:16,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906201085] [2023-11-22 18:51:16,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:51:16,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:51:16,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:51:16,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:51:16,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:51:16,917 INFO L87 Difference]: Start difference. First operand 45665 states and 60352 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:51:20,813 INFO L93 Difference]: Finished difference Result 93547 states and 124109 transitions. [2023-11-22 18:51:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:51:20,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2023-11-22 18:51:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:51:20,859 INFO L225 Difference]: With dead ends: 93547 [2023-11-22 18:51:20,859 INFO L226 Difference]: Without dead ends: 48225 [2023-11-22 18:51:20,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:51:20,897 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 13 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:51:20,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1130 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-22 18:51:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48225 states. [2023-11-22 18:51:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48225 to 46177. [2023-11-22 18:51:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46177 states, 46123 states have (on average 1.317607267523795) internal successors, (60772), 46127 states have internal predecessors, (60772), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 18:51:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46177 states to 46177 states and 60864 transitions. [2023-11-22 18:51:21,569 INFO L78 Accepts]: Start accepts. Automaton has 46177 states and 60864 transitions. Word has length 431 [2023-11-22 18:51:21,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:51:21,571 INFO L495 AbstractCegarLoop]: Abstraction has 46177 states and 60864 transitions. [2023-11-22 18:51:21,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 46177 states and 60864 transitions. [2023-11-22 18:51:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-22 18:51:21,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:51:21,609 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:51:21,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-22 18:51:21,610 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:51:21,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:51:21,610 INFO L85 PathProgramCache]: Analyzing trace with hash -925091029, now seen corresponding path program 1 times [2023-11-22 18:51:21,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:51:21,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885048496] [2023-11-22 18:51:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:51:21,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:51:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:21,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:51:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:21,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:51:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:51:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:21,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:51:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:22,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:51:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:51:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-22 18:51:22,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:51:22,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885048496] [2023-11-22 18:51:22,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885048496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:51:22,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:51:22,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:51:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73006768] [2023-11-22 18:51:22,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:51:22,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:51:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:51:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:51:22,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:51:22,144 INFO L87 Difference]: Start difference. First operand 46177 states and 60864 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:25,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:51:25,465 INFO L93 Difference]: Finished difference Result 92779 states and 122317 transitions. [2023-11-22 18:51:25,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:51:25,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2023-11-22 18:51:25,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:51:25,510 INFO L225 Difference]: With dead ends: 92779 [2023-11-22 18:51:25,510 INFO L226 Difference]: Without dead ends: 46945 [2023-11-22 18:51:25,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:51:25,546 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 4 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:51:25,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1129 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-22 18:51:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46945 states. [2023-11-22 18:51:25,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46945 to 46689. [2023-11-22 18:51:26,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46689 states, 46635 states have (on average 1.3141202959150853) internal successors, (61284), 46639 states have internal predecessors, (61284), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 18:51:26,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46689 states to 46689 states and 61376 transitions. [2023-11-22 18:51:26,069 INFO L78 Accepts]: Start accepts. Automaton has 46689 states and 61376 transitions. Word has length 431 [2023-11-22 18:51:26,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:51:26,070 INFO L495 AbstractCegarLoop]: Abstraction has 46689 states and 61376 transitions. [2023-11-22 18:51:26,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 46689 states and 61376 transitions. [2023-11-22 18:51:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-22 18:51:26,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:51:26,223 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:51:26,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-22 18:51:26,223 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:51:26,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:51:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1387944355, now seen corresponding path program 1 times [2023-11-22 18:51:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:51:26,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549214448] [2023-11-22 18:51:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:51:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:51:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:51:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:26,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:51:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:51:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:51:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:26,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:51:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:51:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2023-11-22 18:51:26,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:51:26,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549214448] [2023-11-22 18:51:26,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549214448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:51:26,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:51:26,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:51:26,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767741115] [2023-11-22 18:51:26,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:51:26,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:51:26,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:51:26,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:51:26,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:51:26,859 INFO L87 Difference]: Start difference. First operand 46689 states and 61376 transitions. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:30,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:51:31,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:51:31,292 INFO L93 Difference]: Finished difference Result 93803 states and 122829 transitions. [2023-11-22 18:51:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:51:31,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2023-11-22 18:51:31,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:51:31,342 INFO L225 Difference]: With dead ends: 93803 [2023-11-22 18:51:31,342 INFO L226 Difference]: Without dead ends: 47457 [2023-11-22 18:51:31,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:51:31,378 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 10 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:51:31,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1127 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-22 18:51:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47457 states. [2023-11-22 18:51:31,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47457 to 46433. [2023-11-22 18:51:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46433 states, 46379 states have (on average 1.2992949395200415) internal successors, (60260), 46383 states have internal predecessors, (60260), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 18:51:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46433 states to 46433 states and 60352 transitions. [2023-11-22 18:51:31,980 INFO L78 Accepts]: Start accepts. Automaton has 46433 states and 60352 transitions. Word has length 431 [2023-11-22 18:51:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:51:31,980 INFO L495 AbstractCegarLoop]: Abstraction has 46433 states and 60352 transitions. [2023-11-22 18:51:31,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:31,980 INFO L276 IsEmpty]: Start isEmpty. Operand 46433 states and 60352 transitions. [2023-11-22 18:51:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-22 18:51:32,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:51:32,040 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:51:32,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-22 18:51:32,040 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:51:32,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:51:32,040 INFO L85 PathProgramCache]: Analyzing trace with hash -832367585, now seen corresponding path program 2 times [2023-11-22 18:51:32,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:51:32,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266040332] [2023-11-22 18:51:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:51:32,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:51:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:51:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:51:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:51:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:32,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:51:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:51:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:32,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:51:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2023-11-22 18:51:32,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:51:32,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266040332] [2023-11-22 18:51:32,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266040332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:51:32,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:51:32,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:51:32,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031266166] [2023-11-22 18:51:32,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:51:32,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:51:32,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:51:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:51:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:51:32,708 INFO L87 Difference]: Start difference. First operand 46433 states and 60352 transitions. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 4 states have internal predecessors, (190), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:35,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:51:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:51:36,191 INFO L93 Difference]: Finished difference Result 91243 states and 118221 transitions. [2023-11-22 18:51:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:51:36,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 4 states have internal predecessors, (190), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2023-11-22 18:51:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:51:36,301 INFO L225 Difference]: With dead ends: 91243 [2023-11-22 18:51:36,301 INFO L226 Difference]: Without dead ends: 45153 [2023-11-22 18:51:36,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:51:36,317 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 11 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:51:36,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1151 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-22 18:51:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45153 states. [2023-11-22 18:51:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45153 to 45153. [2023-11-22 18:51:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45153 states, 45099 states have (on average 1.2850839264728708) internal successors, (57956), 45103 states have internal predecessors, (57956), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 18:51:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45153 states to 45153 states and 58048 transitions. [2023-11-22 18:51:36,645 INFO L78 Accepts]: Start accepts. Automaton has 45153 states and 58048 transitions. Word has length 431 [2023-11-22 18:51:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:51:36,645 INFO L495 AbstractCegarLoop]: Abstraction has 45153 states and 58048 transitions. [2023-11-22 18:51:36,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 4 states have internal predecessors, (190), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 45153 states and 58048 transitions. [2023-11-22 18:51:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-22 18:51:36,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:51:36,771 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:51:36,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-22 18:51:36,771 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:51:36,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:51:36,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1353312975, now seen corresponding path program 3 times [2023-11-22 18:51:36,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:51:36,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677121718] [2023-11-22 18:51:36,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:51:36,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:51:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:37,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:51:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:37,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:51:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:51:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:51:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:51:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:37,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:51:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 449 proven. 16 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2023-11-22 18:51:37,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:51:37,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677121718] [2023-11-22 18:51:37,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677121718] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:51:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233050761] [2023-11-22 18:51:37,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:51:37,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:51:37,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:51:37,735 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:51:37,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-22 18:51:42,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 18:51:42,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:51:42,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:51:42,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:51:42,906 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 23 treesize of output 7 [2023-11-22 18:51:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2023-11-22 18:51:42,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:51:42,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233050761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:51:42,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:51:42,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-22 18:51:42,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624337989] [2023-11-22 18:51:42,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:51:42,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:51:42,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:51:42,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:51:42,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:51:42,917 INFO L87 Difference]: Start difference. First operand 45153 states and 58048 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:44,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:51:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:51:45,961 INFO L93 Difference]: Finished difference Result 94571 states and 121293 transitions. [2023-11-22 18:51:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:51:45,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 431 [2023-11-22 18:51:45,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:51:46,018 INFO L225 Difference]: With dead ends: 94571 [2023-11-22 18:51:46,019 INFO L226 Difference]: Without dead ends: 49761 [2023-11-22 18:51:46,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:51:46,056 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 118 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:51:46,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 976 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-22 18:51:46,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49761 states. [2023-11-22 18:51:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49761 to 45153. [2023-11-22 18:51:46,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45153 states, 45099 states have (on average 1.2794075256657576) internal successors, (57700), 45103 states have internal predecessors, (57700), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 18:51:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45153 states to 45153 states and 57792 transitions. [2023-11-22 18:51:46,538 INFO L78 Accepts]: Start accepts. Automaton has 45153 states and 57792 transitions. Word has length 431 [2023-11-22 18:51:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:51:46,538 INFO L495 AbstractCegarLoop]: Abstraction has 45153 states and 57792 transitions. [2023-11-22 18:51:46,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 18:51:46,539 INFO L276 IsEmpty]: Start isEmpty. Operand 45153 states and 57792 transitions. [2023-11-22 18:51:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-22 18:51:46,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:51:46,582 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:51:46,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-22 18:51:46,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-22 18:51:46,782 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:51:46,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:51:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash 112091829, now seen corresponding path program 1 times [2023-11-22 18:51:46,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:51:46,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273607703] [2023-11-22 18:51:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:51:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:51:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:51:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:51:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:47,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:51:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:47,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 18:51:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:47,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:51:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:47,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:51:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 449 proven. 16 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2023-11-22 18:51:47,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:51:47,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273607703] [2023-11-22 18:51:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273607703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:51:47,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989973623] [2023-11-22 18:51:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:51:47,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:51:47,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:51:47,763 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:51:47,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-22 18:51:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:51:49,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 18:51:49,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:51:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2023-11-22 18:51:49,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... Killed by 15