./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/memory-model/2SB.i --full-output --preprocessor.use.memory.slicer true --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/2SB.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 cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:10:47,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:10:47,378 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 18:10:47,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:10:47,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:10:47,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:10:47,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:10:47,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:10:47,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:10:47,397 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:10:47,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:10:47,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:10:47,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:10:47,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:10:47,399 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:10:47,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:10:47,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:10:47,400 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 18:10:47,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:10:47,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 18:10:47,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:10:47,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:10:47,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:10:47,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:10:47,402 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 18:10:47,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:10:47,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:10:47,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:10:47,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:10:47,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:10:47,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:10:47,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:10:47,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:10:47,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:10:47,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:10:47,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:10:47,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:10:47,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:10:47,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:10:47,407 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:10:47,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:10:47,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:10:47,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 18:10:47,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:10:47,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:10:47,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:10:47,611 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:10:47,611 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:10:47,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memory-model/2SB.i [2023-11-22 18:10:48,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:10:49,057 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:10:49,058 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i [2023-11-22 18:10:49,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5b4cb06/276aeb5dd3e9428a9f2a3a80c4e7b7c6/FLAG603d3aed1 [2023-11-22 18:10:49,077 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5b4cb06/276aeb5dd3e9428a9f2a3a80c4e7b7c6 [2023-11-22 18:10:49,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:10:49,080 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:10:49,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:10:49,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:10:49,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:10:49,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f9802f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49, skipping insertion in model container [2023-11-22 18:10:49,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,127 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:10:49,303 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/2SB.i[13547,13560] [2023-11-22 18:10:49,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:10:49,314 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:10:49,411 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/2SB.i[13547,13560] [2023-11-22 18:10:49,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:10:49,425 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:10:49,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49 WrapperNode [2023-11-22 18:10:49,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:10:49,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:10:49,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:10:49,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:10:49,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,466 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,504 INFO L138 Inliner]: procedures = 28, calls = 405, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 900 [2023-11-22 18:10:49,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:10:49,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:10:49,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:10:49,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:10:49,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,521 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,564 INFO L189 HeapSplitter]: Split 301 memory accesses to 14 slices as follows [48, 10, 10, 15, 37, 11, 13, 13, 3, 40, 3, 12, 76, 10] [2023-11-22 18:10:49,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,608 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:10:49,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:10:49,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:10:49,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:10:49,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (1/1) ... [2023-11-22 18:10:49,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:10:49,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:49,710 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 18:10:49,728 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 18:10:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2023-11-22 18:10:49,786 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2023-11-22 18:10:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2023-11-22 18:10:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2023-11-22 18:10:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2023-11-22 18:10:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2023-11-22 18:10:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2023-11-22 18:10:49,788 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2023-11-22 18:10:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-22 18:10:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-22 18:10:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-22 18:10:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-22 18:10:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-22 18:10:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-22 18:10:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-22 18:10:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-22 18:10:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-11-22 18:10:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-11-22 18:10:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2023-11-22 18:10:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2023-11-22 18:10:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2023-11-22 18:10:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2023-11-22 18:10:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 18:10:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 18:10:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 18:10:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 18:10:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 18:10:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 18:10:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-22 18:10:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-22 18:10:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-22 18:10:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-22 18:10:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-22 18:10:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-22 18:10:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-22 18:10:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-22 18:10:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-22 18:10:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 18:10:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 18:10:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 18:10:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 18:10:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 18:10:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-22 18:10:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-22 18:10:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-22 18:10:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-22 18:10:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-22 18:10:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-22 18:10:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-22 18:10:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-22 18:10:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-22 18:10:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_2_conditions [2023-11-22 18:10:49,797 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_2_conditions [2023-11-22 18:10:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:10:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:10:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:10:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 18:10:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 18:10:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 18:10:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 18:10:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 18:10:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 18:10:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 18:10:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-22 18:10:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-22 18:10:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-22 18:10:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-22 18:10:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2023-11-22 18:10:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2023-11-22 18:10:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2023-11-22 18:10:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2023-11-22 18:10:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:10:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:10:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 18:10:49,990 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:10:49,992 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:10:50,726 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:10:50,760 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:10:50,760 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-22 18:10:50,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:10:50 BoogieIcfgContainer [2023-11-22 18:10:50,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:10:50,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:10:50,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:10:50,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:10:50,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:10:49" (1/3) ... [2023-11-22 18:10:50,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4650c70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:10:50, skipping insertion in model container [2023-11-22 18:10:50,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:10:49" (2/3) ... [2023-11-22 18:10:50,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4650c70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:10:50, skipping insertion in model container [2023-11-22 18:10:50,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:10:50" (3/3) ... [2023-11-22 18:10:50,767 INFO L112 eAbstractionObserver]: Analyzing ICFG 2SB.i [2023-11-22 18:10:50,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:10:50,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:10:50,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:10:50,820 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;@580f0115, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:10:50,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:10:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 135 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:10:50,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-22 18:10:50,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:10:50,832 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:10:50,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:10:50,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:10:50,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1631832828, now seen corresponding path program 1 times [2023-11-22 18:10:50,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:10:50,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363699813] [2023-11-22 18:10:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:50,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:10:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:51,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 18:10:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:51,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:10:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 18:10:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:10:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 18:10:51,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:10:51,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363699813] [2023-11-22 18:10:51,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363699813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:10:51,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016849260] [2023-11-22 18:10:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:51,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:10:51,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:51,309 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 18:10:51,340 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 18:10:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:51,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-22 18:10:51,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:10:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 18:10:51,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:10:51,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016849260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:10:51,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:10:51,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2023-11-22 18:10:51,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445925151] [2023-11-22 18:10:51,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:10:51,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 18:10:51,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:10:51,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 18:10:51,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:10:51,585 INFO L87 Difference]: Start difference. First operand has 155 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 135 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:10:51,768 INFO L93 Difference]: Finished difference Result 308 states and 482 transitions. [2023-11-22 18:10:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 18:10:51,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2023-11-22 18:10:51,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:10:51,776 INFO L225 Difference]: With dead ends: 308 [2023-11-22 18:10:51,777 INFO L226 Difference]: Without dead ends: 147 [2023-11-22 18:10:51,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:10:51,782 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:10:51,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:10:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-22 18:10:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-22 18:10:51,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 125 states have (on average 1.328) internal successors, (166), 127 states have internal predecessors, (166), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:10:51,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 194 transitions. [2023-11-22 18:10:51,836 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 194 transitions. Word has length 40 [2023-11-22 18:10:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:10:51,837 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 194 transitions. [2023-11-22 18:10:51,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 194 transitions. [2023-11-22 18:10:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-22 18:10:51,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:10:51,846 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:10:51,860 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 18:10:52,059 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 18:10:52,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:10:52,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:10:52,061 INFO L85 PathProgramCache]: Analyzing trace with hash -707999250, now seen corresponding path program 1 times [2023-11-22 18:10:52,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:10:52,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827155980] [2023-11-22 18:10:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:10:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 18:10:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:52,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:10:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 18:10:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:10:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 18:10:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:10:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827155980] [2023-11-22 18:10:52,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827155980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:10:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626532310] [2023-11-22 18:10:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:52,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:10:52,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:52,317 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 18:10:52,318 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 18:10:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:52,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:10:52,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:10:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 18:10:52,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:10:52,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626532310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:10:52,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:10:52,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-22 18:10:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191148779] [2023-11-22 18:10:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:10:52,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:10:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:10:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:10:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:10:52,533 INFO L87 Difference]: Start difference. First operand 147 states and 194 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:10:52,877 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2023-11-22 18:10:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:10:52,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2023-11-22 18:10:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:10:52,883 INFO L225 Difference]: With dead ends: 293 [2023-11-22 18:10:52,883 INFO L226 Difference]: Without dead ends: 148 [2023-11-22 18:10:52,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 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 18:10:52,885 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:10:52,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 357 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:10:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-22 18:10:52,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-22 18:10:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 126 states have (on average 1.3253968253968254) internal successors, (167), 128 states have internal predecessors, (167), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:10:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 195 transitions. [2023-11-22 18:10:52,896 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 195 transitions. Word has length 41 [2023-11-22 18:10:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:10:52,896 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 195 transitions. [2023-11-22 18:10:52,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 195 transitions. [2023-11-22 18:10:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-22 18:10:52,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:10:52,898 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:10:52,914 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 18:10:53,110 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 18:10:53,110 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:10:53,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:10:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1485248369, now seen corresponding path program 1 times [2023-11-22 18:10:53,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:10:53,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118124068] [2023-11-22 18:10:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:53,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:10:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:10:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:10:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:10:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:53,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:10:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 18:10:53,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:10:53,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118124068] [2023-11-22 18:10:53,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118124068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:10:53,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163652477] [2023-11-22 18:10:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:53,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:10:53,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:53,317 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 18:10:53,367 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 18:10:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:53,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:10:53,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:10:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 18:10:53,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:10:53,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163652477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:10:53,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:10:53,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:10:53,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012579387] [2023-11-22 18:10:53,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:10:53,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:10:53,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:10:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:10:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:10:53,565 INFO L87 Difference]: Start difference. First operand 148 states and 195 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:10:53,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:10:53,809 INFO L93 Difference]: Finished difference Result 292 states and 387 transitions. [2023-11-22 18:10:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:10:53,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-11-22 18:10:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:10:53,810 INFO L225 Difference]: With dead ends: 292 [2023-11-22 18:10:53,810 INFO L226 Difference]: Without dead ends: 149 [2023-11-22 18:10:53,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 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 18:10:53,812 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:10:53,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:10:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-22 18:10:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-22 18:10:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 127 states have (on average 1.3228346456692914) internal successors, (168), 129 states have internal predecessors, (168), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:10:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2023-11-22 18:10:53,821 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 42 [2023-11-22 18:10:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:10:53,821 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2023-11-22 18:10:53,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:10:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2023-11-22 18:10:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-22 18:10:53,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:10:53,823 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:10:53,837 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 18:10:54,023 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 18:10:54,024 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:10:54,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:10:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1550976507, now seen corresponding path program 1 times [2023-11-22 18:10:54,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:10:54,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172739267] [2023-11-22 18:10:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:54,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:10:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:54,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:10:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:10:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:10:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:10:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 18:10:54,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:10:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172739267] [2023-11-22 18:10:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172739267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:10:54,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965763696] [2023-11-22 18:10:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:54,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:10:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:54,196 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 18:10:54,243 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 18:10:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:54,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:10:54,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:10:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-22 18:10:54,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:10:54,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965763696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:10:54,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:10:54,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:10:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661149714] [2023-11-22 18:10:54,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:10:54,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:10:54,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:10:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:10:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:10:54,454 INFO L87 Difference]: Start difference. First operand 149 states and 196 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:10:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:10:54,706 INFO L93 Difference]: Finished difference Result 284 states and 374 transitions. [2023-11-22 18:10:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:10:54,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2023-11-22 18:10:54,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:10:54,708 INFO L225 Difference]: With dead ends: 284 [2023-11-22 18:10:54,708 INFO L226 Difference]: Without dead ends: 156 [2023-11-22 18:10:54,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 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 18:10:54,709 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:10:54,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 345 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:10:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-22 18:10:54,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2023-11-22 18:10:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.3203125) internal successors, (169), 130 states have internal predecessors, (169), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:10:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 197 transitions. [2023-11-22 18:10:54,717 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 197 transitions. Word has length 44 [2023-11-22 18:10:54,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:10:54,718 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 197 transitions. [2023-11-22 18:10:54,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:10:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 197 transitions. [2023-11-22 18:10:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-22 18:10:54,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:10:54,719 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:10:54,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-22 18:10:54,931 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 18:10:54,932 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:10:54,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:10:54,932 INFO L85 PathProgramCache]: Analyzing trace with hash 594470631, now seen corresponding path program 1 times [2023-11-22 18:10:54,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:10:54,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997161687] [2023-11-22 18:10:54,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:54,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:10:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:10:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:10:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:10:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-22 18:10:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:10:55,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:10:55,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997161687] [2023-11-22 18:10:55,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997161687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:10:55,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862039321] [2023-11-22 18:10:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:55,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:10:55,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:55,100 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 18:10:55,135 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 18:10:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:10:55,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:10:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-22 18:10:55,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:10:55,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862039321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:10:55,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:10:55,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:10:55,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994240037] [2023-11-22 18:10:55,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:10:55,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:10:55,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:10:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:10:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:10:55,341 INFO L87 Difference]: Start difference. First operand 150 states and 197 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:10:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:10:55,614 INFO L93 Difference]: Finished difference Result 275 states and 363 transitions. [2023-11-22 18:10:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:10:55,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-11-22 18:10:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:10:55,616 INFO L225 Difference]: With dead ends: 275 [2023-11-22 18:10:55,616 INFO L226 Difference]: Without dead ends: 157 [2023-11-22 18:10:55,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 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 18:10:55,617 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:10:55,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 345 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:10:55,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-22 18:10:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2023-11-22 18:10:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 129 states have (on average 1.317829457364341) internal successors, (170), 131 states have internal predecessors, (170), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:10:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2023-11-22 18:10:55,623 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 47 [2023-11-22 18:10:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:10:55,623 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2023-11-22 18:10:55,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:10:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2023-11-22 18:10:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-22 18:10:55,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:10:55,624 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:10:55,654 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 18:10:55,837 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 18:10:55,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:10:55,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:10:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash -976296171, now seen corresponding path program 1 times [2023-11-22 18:10:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:10:55,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080197472] [2023-11-22 18:10:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:55,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:10:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:10:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:10:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:10:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:10:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-22 18:10:55,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:10:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080197472] [2023-11-22 18:10:55,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080197472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:10:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090325191] [2023-11-22 18:10:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:55,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:10:55,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:56,026 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 18:10:56,100 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 18:10:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:56,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:10:56,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:10:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 18:10:56,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:10:56,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090325191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:10:56,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:10:56,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:10:56,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815515046] [2023-11-22 18:10:56,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:10:56,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:10:56,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:10:56,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:10:56,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:10:56,356 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:10:56,611 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2023-11-22 18:10:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:10:56,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2023-11-22 18:10:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:10:56,612 INFO L225 Difference]: With dead ends: 187 [2023-11-22 18:10:56,612 INFO L226 Difference]: Without dead ends: 181 [2023-11-22 18:10:56,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 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 18:10:56,613 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 47 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:10:56,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 309 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:10:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-22 18:10:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 152. [2023-11-22 18:10:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 130 states have (on average 1.3153846153846154) internal successors, (171), 132 states have internal predecessors, (171), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:10:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2023-11-22 18:10:56,619 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 50 [2023-11-22 18:10:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:10:56,619 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2023-11-22 18:10:56,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:56,619 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2023-11-22 18:10:56,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-22 18:10:56,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:10:56,621 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:10:56,634 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 18:10:56,835 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 18:10:56,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:10:56,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:10:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1674374375, now seen corresponding path program 1 times [2023-11-22 18:10:56,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:10:56,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253998688] [2023-11-22 18:10:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:56,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:10:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:56,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:10:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:56,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:10:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:56,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:10:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:56,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:10:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 18:10:56,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:10:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253998688] [2023-11-22 18:10:56,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253998688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:10:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60492423] [2023-11-22 18:10:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:56,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:10:56,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:57,010 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 18:10:57,039 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 18:10:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:57,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:10:57,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:10:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 18:10:57,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:10:57,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60492423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:10:57,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:10:57,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:10:57,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069796561] [2023-11-22 18:10:57,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:10:57,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:10:57,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:10:57,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:10:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:10:57,286 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:10:57,537 INFO L93 Difference]: Finished difference Result 189 states and 256 transitions. [2023-11-22 18:10:57,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:10:57,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2023-11-22 18:10:57,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:10:57,538 INFO L225 Difference]: With dead ends: 189 [2023-11-22 18:10:57,538 INFO L226 Difference]: Without dead ends: 153 [2023-11-22 18:10:57,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 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 18:10:57,539 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:10:57,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:10:57,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-22 18:10:57,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-22 18:10:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 133 states have internal predecessors, (172), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:10:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 200 transitions. [2023-11-22 18:10:57,544 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 200 transitions. Word has length 60 [2023-11-22 18:10:57,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:10:57,544 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 200 transitions. [2023-11-22 18:10:57,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:57,545 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 200 transitions. [2023-11-22 18:10:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-22 18:10:57,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:10:57,545 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:10:57,578 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 18:10:57,757 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 18:10:57,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:10:57,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:10:57,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1940534551, now seen corresponding path program 1 times [2023-11-22 18:10:57,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:10:57,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069965735] [2023-11-22 18:10:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:57,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:10:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:57,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:10:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:57,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:10:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:10:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:57,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:10:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 18:10:57,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:10:57,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069965735] [2023-11-22 18:10:57,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069965735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:10:57,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246999133] [2023-11-22 18:10:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:57,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:10:57,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:57,894 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 18:10:57,916 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 18:10:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:58,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:10:58,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:10:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 18:10:58,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:10:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246999133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:10:58,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:10:58,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:10:58,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699869241] [2023-11-22 18:10:58,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:10:58,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:10:58,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:10:58,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:10:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:10:58,181 INFO L87 Difference]: Start difference. First operand 153 states and 200 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:10:58,384 INFO L93 Difference]: Finished difference Result 190 states and 256 transitions. [2023-11-22 18:10:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:10:58,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2023-11-22 18:10:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:10:58,385 INFO L225 Difference]: With dead ends: 190 [2023-11-22 18:10:58,385 INFO L226 Difference]: Without dead ends: 184 [2023-11-22 18:10:58,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 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 18:10:58,386 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 37 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:10:58,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:10:58,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-22 18:10:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2023-11-22 18:10:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 161 states have (on average 1.3664596273291925) internal successors, (220), 163 states have internal predecessors, (220), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:10:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 248 transitions. [2023-11-22 18:10:58,391 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 248 transitions. Word has length 60 [2023-11-22 18:10:58,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:10:58,391 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 248 transitions. [2023-11-22 18:10:58,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 248 transitions. [2023-11-22 18:10:58,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-22 18:10:58,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:10:58,392 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:10:58,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-22 18:10:58,593 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 18:10:58,593 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:10:58,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:10:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1413461973, now seen corresponding path program 1 times [2023-11-22 18:10:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:10:58,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733054092] [2023-11-22 18:10:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:58,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:10:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:10:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:58,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:10:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:58,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:10:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:58,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:10:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 18:10:58,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:10:58,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733054092] [2023-11-22 18:10:58,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733054092] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:10:58,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975820731] [2023-11-22 18:10:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:58,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:10:58,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:58,750 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 18:10:58,787 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 18:10:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:59,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:10:59,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:10:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-22 18:10:59,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:10:59,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975820731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:10:59,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:10:59,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:10:59,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005189806] [2023-11-22 18:10:59,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:10:59,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:10:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:10:59,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:10:59,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:10:59,079 INFO L87 Difference]: Start difference. First operand 183 states and 248 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:10:59,339 INFO L93 Difference]: Finished difference Result 251 states and 353 transitions. [2023-11-22 18:10:59,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:10:59,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2023-11-22 18:10:59,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:10:59,340 INFO L225 Difference]: With dead ends: 251 [2023-11-22 18:10:59,340 INFO L226 Difference]: Without dead ends: 245 [2023-11-22 18:10:59,341 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 18:10:59,341 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 23 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:10:59,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:10:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-22 18:10:59,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-11-22 18:10:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 223 states have (on average 1.4260089686098654) internal successors, (318), 225 states have internal predecessors, (318), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:10:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 346 transitions. [2023-11-22 18:10:59,347 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 346 transitions. Word has length 74 [2023-11-22 18:10:59,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:10:59,348 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 346 transitions. [2023-11-22 18:10:59,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:10:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 346 transitions. [2023-11-22 18:10:59,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-22 18:10:59,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:10:59,349 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 18:10:59,370 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 18:10:59,562 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 18:10:59,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:10:59,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:10:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash 58504681, now seen corresponding path program 1 times [2023-11-22 18:10:59,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:10:59,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262701580] [2023-11-22 18:10:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:59,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:10:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:59,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:10:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:59,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:10:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:59,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:10:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:59,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:10:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:10:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 18:10:59,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:10:59,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262701580] [2023-11-22 18:10:59,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262701580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:10:59,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081067187] [2023-11-22 18:10:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:10:59,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:10:59,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:10:59,744 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 18:10:59,787 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 18:11:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:00,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:11:00,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-22 18:11:00,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:11:00,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081067187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:00,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:11:00,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:11:00,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465475686] [2023-11-22 18:11:00,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:00,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:11:00,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:11:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:11:00,117 INFO L87 Difference]: Start difference. First operand 245 states and 346 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:11:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:00,378 INFO L93 Difference]: Finished difference Result 375 states and 549 transitions. [2023-11-22 18:11:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:11:00,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 90 [2023-11-22 18:11:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:00,380 INFO L225 Difference]: With dead ends: 375 [2023-11-22 18:11:00,380 INFO L226 Difference]: Without dead ends: 369 [2023-11-22 18:11:00,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 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 18:11:00,381 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 22 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:00,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 353 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:11:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-22 18:11:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-11-22 18:11:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 347 states have (on average 1.4812680115273775) internal successors, (514), 349 states have internal predecessors, (514), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:11:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 542 transitions. [2023-11-22 18:11:00,388 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 542 transitions. Word has length 90 [2023-11-22 18:11:00,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:00,389 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 542 transitions. [2023-11-22 18:11:00,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:11:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 542 transitions. [2023-11-22 18:11:00,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-22 18:11:00,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:00,390 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-22 18:11:00,403 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 18:11:00,603 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 18:11:00,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:00,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:00,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1840084245, now seen corresponding path program 1 times [2023-11-22 18:11:00,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:00,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889930890] [2023-11-22 18:11:00,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:00,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:00,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:11:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:00,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:11:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:11:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:00,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:11:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:00,816 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 18:11:00,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889930890] [2023-11-22 18:11:00,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889930890] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829180675] [2023-11-22 18:11:00,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:00,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:00,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:00,819 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 18:11:00,843 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 18:11:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:01,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:11:01,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:01,173 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 18:11:01,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:11:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829180675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:01,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:11:01,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:11:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788077088] [2023-11-22 18:11:01,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:01,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:11:01,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:11:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:11:01,175 INFO L87 Difference]: Start difference. First operand 369 states and 542 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:11:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:01,446 INFO L93 Difference]: Finished difference Result 623 states and 941 transitions. [2023-11-22 18:11:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:11:01,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 100 [2023-11-22 18:11:01,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:01,448 INFO L225 Difference]: With dead ends: 623 [2023-11-22 18:11:01,448 INFO L226 Difference]: Without dead ends: 617 [2023-11-22 18:11:01,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 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 18:11:01,449 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 20 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:01,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:11:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-11-22 18:11:01,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2023-11-22 18:11:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 595 states have (on average 1.522689075630252) internal successors, (906), 597 states have internal predecessors, (906), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:11:01,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 934 transitions. [2023-11-22 18:11:01,460 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 934 transitions. Word has length 100 [2023-11-22 18:11:01,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:01,460 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 934 transitions. [2023-11-22 18:11:01,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:11:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 934 transitions. [2023-11-22 18:11:01,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-22 18:11:01,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:01,462 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:01,484 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 18:11:01,675 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 18:11:01,675 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:01,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:01,675 INFO L85 PathProgramCache]: Analyzing trace with hash 394013531, now seen corresponding path program 1 times [2023-11-22 18:11:01,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:01,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619437536] [2023-11-22 18:11:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:01,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:11:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:11:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:11:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:11:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 18:11:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:01,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619437536] [2023-11-22 18:11:01,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619437536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:01,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054899332] [2023-11-22 18:11:01,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:01,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:01,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:01,885 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 18:11:01,886 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 18:11:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:02,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:11:02,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 18:11:02,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:11:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 18:11:02,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054899332] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:11:02,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:11:02,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 4] total 8 [2023-11-22 18:11:02,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651404004] [2023-11-22 18:11:02,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:11:02,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:11:02,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:02,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:11:02,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:11:02,280 INFO L87 Difference]: Start difference. First operand 617 states and 934 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-22 18:11:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:02,998 INFO L93 Difference]: Finished difference Result 1234 states and 1870 transitions. [2023-11-22 18:11:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:11:02,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 130 [2023-11-22 18:11:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:03,000 INFO L225 Difference]: With dead ends: 1234 [2023-11-22 18:11:03,000 INFO L226 Difference]: Without dead ends: 620 [2023-11-22 18:11:03,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 263 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 18:11:03,001 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:03,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 805 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 18:11:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-11-22 18:11:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2023-11-22 18:11:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 598 states have (on average 1.520066889632107) internal successors, (909), 600 states have internal predecessors, (909), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:11:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 937 transitions. [2023-11-22 18:11:03,013 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 937 transitions. Word has length 130 [2023-11-22 18:11:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:03,013 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 937 transitions. [2023-11-22 18:11:03,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-22 18:11:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 937 transitions. [2023-11-22 18:11:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-22 18:11:03,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:03,015 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:03,034 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 18:11:03,228 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 18:11:03,229 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:03,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:03,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1076598680, now seen corresponding path program 2 times [2023-11-22 18:11:03,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:03,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3902505] [2023-11-22 18:11:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:03,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:03,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:11:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:03,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:11:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:03,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 18:11:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-22 18:11:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-22 18:11:03,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:03,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3902505] [2023-11-22 18:11:03,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3902505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:03,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671247042] [2023-11-22 18:11:03,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:11:03,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:03,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:03,469 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 18:11:03,473 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 18:11:04,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:11:04,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:11:04,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:11:04,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 18:11:04,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:11:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-22 18:11:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671247042] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:11:04,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:11:04,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 14 [2023-11-22 18:11:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628824617] [2023-11-22 18:11:04,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:11:04,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 18:11:04,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:04,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 18:11:04,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:11:04,204 INFO L87 Difference]: Start difference. First operand 620 states and 937 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 18:11:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:05,007 INFO L93 Difference]: Finished difference Result 1240 states and 1881 transitions. [2023-11-22 18:11:05,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 18:11:05,008 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2023-11-22 18:11:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:05,010 INFO L225 Difference]: With dead ends: 1240 [2023-11-22 18:11:05,010 INFO L226 Difference]: Without dead ends: 626 [2023-11-22 18:11:05,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:11:05,011 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:05,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 981 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 18:11:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-22 18:11:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2023-11-22 18:11:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 604 states have (on average 1.5149006622516556) internal successors, (915), 606 states have internal predecessors, (915), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:11:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 943 transitions. [2023-11-22 18:11:05,022 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 943 transitions. Word has length 133 [2023-11-22 18:11:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:05,022 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 943 transitions. [2023-11-22 18:11:05,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 18:11:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 943 transitions. [2023-11-22 18:11:05,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-22 18:11:05,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:05,024 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-22 18:11:05,048 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 18:11:05,238 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 18:11:05,238 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:05,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:05,238 INFO L85 PathProgramCache]: Analyzing trace with hash 943145735, now seen corresponding path program 3 times [2023-11-22 18:11:05,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:05,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305164871] [2023-11-22 18:11:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:05,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:11:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:05,456 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 18:11:05,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305164871] [2023-11-22 18:11:05,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305164871] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803232642] [2023-11-22 18:11:05,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:11:05,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:05,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:05,458 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 18:11:05,500 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 18:11:06,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 18:11:06,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:11:06,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-22 18:11:06,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:06,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 127 [2023-11-22 18:11:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 18:11:06,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:11:06,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803232642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:06,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:11:06,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2023-11-22 18:11:06,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732787526] [2023-11-22 18:11:06,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:06,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:11:06,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:11:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:11:06,676 INFO L87 Difference]: Start difference. First operand 626 states and 943 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:11:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:08,084 INFO L93 Difference]: Finished difference Result 1194 states and 1824 transitions. [2023-11-22 18:11:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:11:08,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2023-11-22 18:11:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:08,087 INFO L225 Difference]: With dead ends: 1194 [2023-11-22 18:11:08,087 INFO L226 Difference]: Without dead ends: 685 [2023-11-22 18:11:08,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:11:08,088 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 115 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:08,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 743 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 18:11:08,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-11-22 18:11:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 634. [2023-11-22 18:11:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 612 states have (on average 1.5147058823529411) internal successors, (927), 614 states have internal predecessors, (927), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 18:11:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 955 transitions. [2023-11-22 18:11:08,104 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 955 transitions. Word has length 140 [2023-11-22 18:11:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:08,104 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 955 transitions. [2023-11-22 18:11:08,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:11:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 955 transitions. [2023-11-22 18:11:08,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-22 18:11:08,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:08,106 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:08,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-22 18:11:08,320 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 18:11:08,320 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:08,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:08,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1387889227, now seen corresponding path program 1 times [2023-11-22 18:11:08,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:08,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818914628] [2023-11-22 18:11:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:08,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:11:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:08,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 18:11:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-22 18:11:08,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:08,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818914628] [2023-11-22 18:11:08,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818914628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:08,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298679140] [2023-11-22 18:11:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:08,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:08,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:08,538 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 18:11:08,562 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 18:11:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:08,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:11:08,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 18:11:08,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:11:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-22 18:11:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298679140] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:11:08,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:11:08,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-22 18:11:08,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869125830] [2023-11-22 18:11:08,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:11:08,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:11:08,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:08,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:11:08,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:11:08,972 INFO L87 Difference]: Start difference. First operand 634 states and 955 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:11:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:09,603 INFO L93 Difference]: Finished difference Result 1258 states and 1902 transitions. [2023-11-22 18:11:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:11:09,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 149 [2023-11-22 18:11:09,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:09,606 INFO L225 Difference]: With dead ends: 1258 [2023-11-22 18:11:09,606 INFO L226 Difference]: Without dead ends: 655 [2023-11-22 18:11:09,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 304 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 18:11:09,607 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 33 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:09,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 605 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:11:09,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-22 18:11:09,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2023-11-22 18:11:09,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 630 states have (on average 1.5047619047619047) internal successors, (948), 632 states have internal predecessors, (948), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-22 18:11:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 982 transitions. [2023-11-22 18:11:09,624 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 982 transitions. Word has length 149 [2023-11-22 18:11:09,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:09,624 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 982 transitions. [2023-11-22 18:11:09,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:11:09,624 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 982 transitions. [2023-11-22 18:11:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-22 18:11:09,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:09,627 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 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] [2023-11-22 18:11:09,645 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 18:11:09,840 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 18:11:09,841 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:09,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1107637205, now seen corresponding path program 2 times [2023-11-22 18:11:09,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:09,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034651808] [2023-11-22 18:11:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:09,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:10,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:10,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:10,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:10,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 18:11:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:10,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:11:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-22 18:11:10,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:10,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034651808] [2023-11-22 18:11:10,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034651808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:10,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250123577] [2023-11-22 18:11:10,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:11:10,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:10,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:10,073 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 18:11:10,100 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 18:11:10,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:11:10,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:11:10,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:11:10,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 18:11:10,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:11:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-22 18:11:10,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250123577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:11:10,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:11:10,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2023-11-22 18:11:10,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197436908] [2023-11-22 18:11:10,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:11:10,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 18:11:10,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 18:11:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:11:10,825 INFO L87 Difference]: Start difference. First operand 655 states and 982 transitions. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 13 states have internal predecessors, (115), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:11:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:11,812 INFO L93 Difference]: Finished difference Result 1306 states and 1967 transitions. [2023-11-22 18:11:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 18:11:11,812 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 13 states have internal predecessors, (115), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 158 [2023-11-22 18:11:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:11,815 INFO L225 Difference]: With dead ends: 1306 [2023-11-22 18:11:11,815 INFO L226 Difference]: Without dead ends: 703 [2023-11-22 18:11:11,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:11:11,816 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 72 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:11,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1093 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:11:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2023-11-22 18:11:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2023-11-22 18:11:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 666 states have (on average 1.4864864864864864) internal successors, (990), 668 states have internal predecessors, (990), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1036 transitions. [2023-11-22 18:11:11,833 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1036 transitions. Word has length 158 [2023-11-22 18:11:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:11,833 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1036 transitions. [2023-11-22 18:11:11,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 13 states have internal predecessors, (115), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:11:11,833 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1036 transitions. [2023-11-22 18:11:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:11,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:11,835 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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 18:11:11,849 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 18:11:12,048 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 18:11:12,048 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:12,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash -262875205, now seen corresponding path program 3 times [2023-11-22 18:11:12,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:12,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850989741] [2023-11-22 18:11:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:12,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:12,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:12,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-22 18:11:12,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:12,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850989741] [2023-11-22 18:11:12,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850989741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:12,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:12,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:11:12,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232724696] [2023-11-22 18:11:12,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:12,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:11:12,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:11:12,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:11:12,409 INFO L87 Difference]: Start difference. First operand 697 states and 1036 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:13,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:13,229 INFO L93 Difference]: Finished difference Result 1743 states and 2691 transitions. [2023-11-22 18:11:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:11:13,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:13,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:13,233 INFO L225 Difference]: With dead ends: 1743 [2023-11-22 18:11:13,233 INFO L226 Difference]: Without dead ends: 1241 [2023-11-22 18:11:13,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 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 18:11:13,234 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 61 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:13,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 693 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 18:11:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2023-11-22 18:11:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 841. [2023-11-22 18:11:13,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 810 states have (on average 1.4790123456790123) internal successors, (1198), 812 states have internal predecessors, (1198), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1244 transitions. [2023-11-22 18:11:13,257 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1244 transitions. Word has length 176 [2023-11-22 18:11:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:13,257 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1244 transitions. [2023-11-22 18:11:13,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:13,257 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1244 transitions. [2023-11-22 18:11:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:13,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:13,259 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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 18:11:13,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 18:11:13,259 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:13,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:13,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1900630977, now seen corresponding path program 1 times [2023-11-22 18:11:13,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:13,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395656589] [2023-11-22 18:11:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:13,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:13,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:13,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-22 18:11:13,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:13,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395656589] [2023-11-22 18:11:13,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395656589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:13,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:13,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:11:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822234023] [2023-11-22 18:11:13,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:13,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:11:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:13,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:11:13,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:11:13,473 INFO L87 Difference]: Start difference. First operand 841 states and 1244 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:14,103 INFO L93 Difference]: Finished difference Result 1615 states and 2451 transitions. [2023-11-22 18:11:14,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:11:14,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:14,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:14,106 INFO L225 Difference]: With dead ends: 1615 [2023-11-22 18:11:14,106 INFO L226 Difference]: Without dead ends: 969 [2023-11-22 18:11:14,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 18:11:14,107 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 13 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:14,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 612 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:11:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-11-22 18:11:14,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 873. [2023-11-22 18:11:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 842 states have (on average 1.4608076009501187) internal successors, (1230), 844 states have internal predecessors, (1230), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1276 transitions. [2023-11-22 18:11:14,127 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1276 transitions. Word has length 176 [2023-11-22 18:11:14,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:14,127 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1276 transitions. [2023-11-22 18:11:14,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1276 transitions. [2023-11-22 18:11:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:14,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:14,130 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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 18:11:14,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 18:11:14,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:14,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:14,130 INFO L85 PathProgramCache]: Analyzing trace with hash 655956295, now seen corresponding path program 1 times [2023-11-22 18:11:14,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:14,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082745805] [2023-11-22 18:11:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:14,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:14,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-22 18:11:14,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:14,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082745805] [2023-11-22 18:11:14,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082745805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:14,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:14,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:11:14,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802060928] [2023-11-22 18:11:14,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:14,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:11:14,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:14,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:11:14,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:11:14,358 INFO L87 Difference]: Start difference. First operand 873 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:15,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:15,004 INFO L93 Difference]: Finished difference Result 1615 states and 2419 transitions. [2023-11-22 18:11:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:11:15,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:15,007 INFO L225 Difference]: With dead ends: 1615 [2023-11-22 18:11:15,007 INFO L226 Difference]: Without dead ends: 937 [2023-11-22 18:11:15,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 18:11:15,009 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 4 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:15,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 612 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:11:15,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-11-22 18:11:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 921. [2023-11-22 18:11:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 890 states have (on average 1.4359550561797754) internal successors, (1278), 892 states have internal predecessors, (1278), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1324 transitions. [2023-11-22 18:11:15,035 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1324 transitions. Word has length 176 [2023-11-22 18:11:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:15,035 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1324 transitions. [2023-11-22 18:11:15,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1324 transitions. [2023-11-22 18:11:15,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:15,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:15,038 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-22 18:11:15,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 18:11:15,038 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:15,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1643108169, now seen corresponding path program 1 times [2023-11-22 18:11:15,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:15,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884566537] [2023-11-22 18:11:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:15,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-22 18:11:15,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:15,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884566537] [2023-11-22 18:11:15,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884566537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:15,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:15,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:11:15,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631234172] [2023-11-22 18:11:15,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:15,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:11:15,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:15,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:11:15,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:11:15,386 INFO L87 Difference]: Start difference. First operand 921 states and 1324 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:16,208 INFO L93 Difference]: Finished difference Result 2015 states and 2963 transitions. [2023-11-22 18:11:16,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:11:16,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:16,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:16,213 INFO L225 Difference]: With dead ends: 2015 [2023-11-22 18:11:16,213 INFO L226 Difference]: Without dead ends: 1289 [2023-11-22 18:11:16,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 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 18:11:16,215 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 44 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:16,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 570 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 18:11:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-11-22 18:11:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1113. [2023-11-22 18:11:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1082 states have (on average 1.432532347504621) internal successors, (1550), 1084 states have internal predecessors, (1550), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1596 transitions. [2023-11-22 18:11:16,285 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1596 transitions. Word has length 176 [2023-11-22 18:11:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:16,285 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1596 transitions. [2023-11-22 18:11:16,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:16,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1596 transitions. [2023-11-22 18:11:16,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:16,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:16,289 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-22 18:11:16,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 18:11:16,290 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:16,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:16,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1225711563, now seen corresponding path program 1 times [2023-11-22 18:11:16,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:16,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781971438] [2023-11-22 18:11:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:16,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:16,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:16,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:16,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-22 18:11:16,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:16,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781971438] [2023-11-22 18:11:16,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781971438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:16,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:16,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:11:16,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301427454] [2023-11-22 18:11:16,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:16,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:11:16,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:16,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:11:16,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:11:16,504 INFO L87 Difference]: Start difference. First operand 1113 states and 1596 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:17,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:17,145 INFO L93 Difference]: Finished difference Result 2159 states and 3155 transitions. [2023-11-22 18:11:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:11:17,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:17,149 INFO L225 Difference]: With dead ends: 2159 [2023-11-22 18:11:17,149 INFO L226 Difference]: Without dead ends: 1241 [2023-11-22 18:11:17,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 18:11:17,151 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 13 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:17,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 612 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:11:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2023-11-22 18:11:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1145. [2023-11-22 18:11:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1114 states have (on average 1.4201077199281866) internal successors, (1582), 1116 states have internal predecessors, (1582), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1628 transitions. [2023-11-22 18:11:17,173 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1628 transitions. Word has length 176 [2023-11-22 18:11:17,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:17,173 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1628 transitions. [2023-11-22 18:11:17,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1628 transitions. [2023-11-22 18:11:17,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:17,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:17,175 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-22 18:11:17,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 18:11:17,176 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:17,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1107681075, now seen corresponding path program 1 times [2023-11-22 18:11:17,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:17,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435122445] [2023-11-22 18:11:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:17,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:17,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:17,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-22 18:11:17,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:17,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435122445] [2023-11-22 18:11:17,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435122445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:17,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:17,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:11:17,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463808515] [2023-11-22 18:11:17,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:17,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:11:17,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:17,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:11:17,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:11:17,400 INFO L87 Difference]: Start difference. First operand 1145 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:17,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:17,962 INFO L93 Difference]: Finished difference Result 2159 states and 3123 transitions. [2023-11-22 18:11:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:11:17,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:17,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:17,965 INFO L225 Difference]: With dead ends: 2159 [2023-11-22 18:11:17,965 INFO L226 Difference]: Without dead ends: 1209 [2023-11-22 18:11:17,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 18:11:17,967 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 4 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:17,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 611 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:11:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2023-11-22 18:11:17,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1193. [2023-11-22 18:11:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1162 states have (on average 1.4027538726333908) internal successors, (1630), 1164 states have internal predecessors, (1630), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:17,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1676 transitions. [2023-11-22 18:11:17,987 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1676 transitions. Word has length 176 [2023-11-22 18:11:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:17,987 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1676 transitions. [2023-11-22 18:11:17,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1676 transitions. [2023-11-22 18:11:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:17,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:17,990 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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] [2023-11-22 18:11:17,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 18:11:17,990 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:17,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash -101007291, now seen corresponding path program 2 times [2023-11-22 18:11:17,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:17,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301890112] [2023-11-22 18:11:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:17,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:18,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-11-22 18:11:18,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:18,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301890112] [2023-11-22 18:11:18,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301890112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:18,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:18,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:11:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803863078] [2023-11-22 18:11:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:18,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:11:18,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:11:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:11:18,187 INFO L87 Difference]: Start difference. First operand 1193 states and 1676 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:18,857 INFO L93 Difference]: Finished difference Result 2287 states and 3251 transitions. [2023-11-22 18:11:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:11:18,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:18,861 INFO L225 Difference]: With dead ends: 2287 [2023-11-22 18:11:18,862 INFO L226 Difference]: Without dead ends: 1289 [2023-11-22 18:11:18,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 18:11:18,863 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 15 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:18,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 643 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 18:11:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-11-22 18:11:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1193. [2023-11-22 18:11:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1162 states have (on average 1.3889845094664373) internal successors, (1614), 1164 states have internal predecessors, (1614), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:18,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1660 transitions. [2023-11-22 18:11:18,884 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1660 transitions. Word has length 176 [2023-11-22 18:11:18,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:18,885 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1660 transitions. [2023-11-22 18:11:18,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:18,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1660 transitions. [2023-11-22 18:11:18,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:18,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:18,887 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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] [2023-11-22 18:11:18,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 18:11:18,888 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:18,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1805469751, now seen corresponding path program 1 times [2023-11-22 18:11:18,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:18,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936602388] [2023-11-22 18:11:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:19,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-22 18:11:19,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:19,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936602388] [2023-11-22 18:11:19,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936602388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:19,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:19,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:11:19,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452952589] [2023-11-22 18:11:19,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:19,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:11:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:19,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:11:19,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:11:19,101 INFO L87 Difference]: Start difference. First operand 1193 states and 1660 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:19,717 INFO L93 Difference]: Finished difference Result 2351 states and 3315 transitions. [2023-11-22 18:11:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:11:19,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:19,721 INFO L225 Difference]: With dead ends: 2351 [2023-11-22 18:11:19,721 INFO L226 Difference]: Without dead ends: 1353 [2023-11-22 18:11:19,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 18:11:19,726 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 9 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:19,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 630 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:11:19,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2023-11-22 18:11:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1225. [2023-11-22 18:11:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1194 states have (on average 1.3651591289782246) internal successors, (1630), 1196 states have internal predecessors, (1630), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:19,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1676 transitions. [2023-11-22 18:11:19,746 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1676 transitions. Word has length 176 [2023-11-22 18:11:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:19,746 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1676 transitions. [2023-11-22 18:11:19,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1676 transitions. [2023-11-22 18:11:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:19,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:19,749 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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] [2023-11-22 18:11:19,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 18:11:19,749 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:19,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:19,749 INFO L85 PathProgramCache]: Analyzing trace with hash 548061261, now seen corresponding path program 1 times [2023-11-22 18:11:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:19,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152515663] [2023-11-22 18:11:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:19,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:19,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:19,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:20,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:20,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-11-22 18:11:20,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:20,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152515663] [2023-11-22 18:11:20,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152515663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:20,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:20,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:11:20,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809447423] [2023-11-22 18:11:20,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:20,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:11:20,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:20,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:11:20,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:11:20,053 INFO L87 Difference]: Start difference. First operand 1225 states and 1676 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:20,708 INFO L93 Difference]: Finished difference Result 2687 states and 3683 transitions. [2023-11-22 18:11:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:11:20,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:20,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:20,712 INFO L225 Difference]: With dead ends: 2687 [2023-11-22 18:11:20,712 INFO L226 Difference]: Without dead ends: 1657 [2023-11-22 18:11:20,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 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 18:11:20,713 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 68 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:20,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 652 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:11:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-11-22 18:11:20,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1321. [2023-11-22 18:11:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1290 states have (on average 1.3255813953488371) internal successors, (1710), 1292 states have internal predecessors, (1710), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1756 transitions. [2023-11-22 18:11:20,738 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1756 transitions. Word has length 176 [2023-11-22 18:11:20,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:20,739 INFO L495 AbstractCegarLoop]: Abstraction has 1321 states and 1756 transitions. [2023-11-22 18:11:20,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1756 transitions. [2023-11-22 18:11:20,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:20,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:20,742 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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] [2023-11-22 18:11:20,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 18:11:20,742 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:20,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1207592783, now seen corresponding path program 1 times [2023-11-22 18:11:20,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:20,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58068577] [2023-11-22 18:11:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:20,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:20,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:20,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:20,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-22 18:11:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:20,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58068577] [2023-11-22 18:11:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58068577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:20,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:11:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260409705] [2023-11-22 18:11:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:11:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:11:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:11:20,923 INFO L87 Difference]: Start difference. First operand 1321 states and 1756 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:21,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:21,582 INFO L93 Difference]: Finished difference Result 2639 states and 3571 transitions. [2023-11-22 18:11:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:11:21,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:21,587 INFO L225 Difference]: With dead ends: 2639 [2023-11-22 18:11:21,587 INFO L226 Difference]: Without dead ends: 1513 [2023-11-22 18:11:21,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 18:11:21,589 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 15 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:21,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 643 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:11:21,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2023-11-22 18:11:21,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1353. [2023-11-22 18:11:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1322 states have (on average 1.3055975794251136) internal successors, (1726), 1324 states have internal predecessors, (1726), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1772 transitions. [2023-11-22 18:11:21,610 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1772 transitions. Word has length 176 [2023-11-22 18:11:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:21,611 INFO L495 AbstractCegarLoop]: Abstraction has 1353 states and 1772 transitions. [2023-11-22 18:11:21,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1772 transitions. [2023-11-22 18:11:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:21,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:21,613 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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] [2023-11-22 18:11:21,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-22 18:11:21,613 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:21,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash 363587281, now seen corresponding path program 1 times [2023-11-22 18:11:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563968104] [2023-11-22 18:11:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:21,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:21,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:21,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-22 18:11:21,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563968104] [2023-11-22 18:11:21,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563968104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:21,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:21,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:11:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467877144] [2023-11-22 18:11:21,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:21,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:11:21,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:11:21,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:11:21,814 INFO L87 Difference]: Start difference. First operand 1353 states and 1772 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:22,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:22,478 INFO L93 Difference]: Finished difference Result 2639 states and 3507 transitions. [2023-11-22 18:11:22,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:11:22,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:22,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:22,482 INFO L225 Difference]: With dead ends: 2639 [2023-11-22 18:11:22,482 INFO L226 Difference]: Without dead ends: 1481 [2023-11-22 18:11:22,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 18:11:22,485 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 9 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:22,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 630 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:11:22,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2023-11-22 18:11:22,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1385. [2023-11-22 18:11:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1354 states have (on average 1.2865583456425407) internal successors, (1742), 1356 states have internal predecessors, (1742), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1788 transitions. [2023-11-22 18:11:22,513 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1788 transitions. Word has length 176 [2023-11-22 18:11:22,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:22,513 INFO L495 AbstractCegarLoop]: Abstraction has 1385 states and 1788 transitions. [2023-11-22 18:11:22,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:22,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1788 transitions. [2023-11-22 18:11:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:22,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:22,515 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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] [2023-11-22 18:11:22,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-22 18:11:22,516 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:22,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:22,516 INFO L85 PathProgramCache]: Analyzing trace with hash 291200723, now seen corresponding path program 1 times [2023-11-22 18:11:22,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:22,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087004385] [2023-11-22 18:11:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:22,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:22,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:22,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-22 18:11:22,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:22,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087004385] [2023-11-22 18:11:22,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087004385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:22,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:11:22,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:11:22,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524392772] [2023-11-22 18:11:22,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:22,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:11:22,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:22,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:11:22,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:11:22,777 INFO L87 Difference]: Start difference. First operand 1385 states and 1788 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:23,302 INFO L93 Difference]: Finished difference Result 2639 states and 3443 transitions. [2023-11-22 18:11:23,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:11:23,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 176 [2023-11-22 18:11:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:23,306 INFO L225 Difference]: With dead ends: 2639 [2023-11-22 18:11:23,306 INFO L226 Difference]: Without dead ends: 1449 [2023-11-22 18:11:23,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:11:23,307 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 3 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:23,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 617 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:11:23,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-11-22 18:11:23,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1433. [2023-11-22 18:11:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1402 states have (on average 1.253922967189729) internal successors, (1758), 1404 states have internal predecessors, (1758), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-22 18:11:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1804 transitions. [2023-11-22 18:11:23,327 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1804 transitions. Word has length 176 [2023-11-22 18:11:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:23,327 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1804 transitions. [2023-11-22 18:11:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1804 transitions. [2023-11-22 18:11:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:11:23,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:23,330 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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] [2023-11-22 18:11:23,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-22 18:11:23,330 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:23,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:23,330 INFO L85 PathProgramCache]: Analyzing trace with hash 992800597, now seen corresponding path program 1 times [2023-11-22 18:11:23,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:23,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512904497] [2023-11-22 18:11:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:23,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:23,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:11:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:11:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-22 18:11:23,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:23,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512904497] [2023-11-22 18:11:23,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512904497] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:23,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812190325] [2023-11-22 18:11:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:23,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:23,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:23,634 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 18:11:23,636 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 18:11:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:24,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 18:11:24,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-22 18:11:24,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:11:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-22 18:11:24,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812190325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:11:24,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:11:24,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2023-11-22 18:11:24,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421146083] [2023-11-22 18:11:24,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:11:24,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 18:11:24,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:24,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 18:11:24,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:11:24,252 INFO L87 Difference]: Start difference. First operand 1433 states and 1804 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:11:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:24,890 INFO L93 Difference]: Finished difference Result 2789 states and 3516 transitions. [2023-11-22 18:11:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:11:24,891 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 176 [2023-11-22 18:11:24,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:24,894 INFO L225 Difference]: With dead ends: 2789 [2023-11-22 18:11:24,894 INFO L226 Difference]: Without dead ends: 1461 [2023-11-22 18:11:24,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:11:24,896 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 40 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:24,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 626 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:11:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2023-11-22 18:11:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1461. [2023-11-22 18:11:24,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1426 states have (on average 1.2524544179523143) internal successors, (1786), 1428 states have internal predecessors, (1786), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-22 18:11:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1840 transitions. [2023-11-22 18:11:24,917 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1840 transitions. Word has length 176 [2023-11-22 18:11:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:24,917 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 1840 transitions. [2023-11-22 18:11:24,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:11:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1840 transitions. [2023-11-22 18:11:24,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-22 18:11:24,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:24,920 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 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, 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] [2023-11-22 18:11:24,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-22 18:11:25,137 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,SelfDestructingSolverStorable28 [2023-11-22 18:11:25,137 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:25,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:25,138 INFO L85 PathProgramCache]: Analyzing trace with hash 60889813, now seen corresponding path program 2 times [2023-11-22 18:11:25,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:25,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210535495] [2023-11-22 18:11:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:25,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:25,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:25,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 18:11:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:25,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:11:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-22 18:11:25,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:25,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210535495] [2023-11-22 18:11:25,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210535495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:25,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834390877] [2023-11-22 18:11:25,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:11:25,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:25,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:25,443 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 18:11:25,483 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 18:11:26,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:11:26,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:11:26,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 18:11:26,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-22 18:11:26,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:11:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-22 18:11:26,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834390877] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:11:26,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:11:26,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2023-11-22 18:11:26,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527521247] [2023-11-22 18:11:26,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:11:26,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 18:11:26,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:26,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 18:11:26,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:11:26,516 INFO L87 Difference]: Start difference. First operand 1461 states and 1840 transitions. Second operand has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:11:27,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:27,577 INFO L93 Difference]: Finished difference Result 2810 states and 3542 transitions. [2023-11-22 18:11:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 18:11:27,578 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 188 [2023-11-22 18:11:27,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:27,582 INFO L225 Difference]: With dead ends: 2810 [2023-11-22 18:11:27,582 INFO L226 Difference]: Without dead ends: 1482 [2023-11-22 18:11:27,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 377 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:11:27,583 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 65 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:27,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 961 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:11:27,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-11-22 18:11:27,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1482. [2023-11-22 18:11:27,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1444 states have (on average 1.2513850415512466) internal successors, (1807), 1446 states have internal predecessors, (1807), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-22 18:11:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1867 transitions. [2023-11-22 18:11:27,607 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1867 transitions. Word has length 188 [2023-11-22 18:11:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:27,608 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 1867 transitions. [2023-11-22 18:11:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 12 states have internal predecessors, (119), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:11:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1867 transitions. [2023-11-22 18:11:27,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-22 18:11:27,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:27,611 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 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, 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] [2023-11-22 18:11:27,646 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 18:11:27,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:27,827 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:27,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash 505130831, now seen corresponding path program 3 times [2023-11-22 18:11:27,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:27,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621772213] [2023-11-22 18:11:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:27,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:28,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:28,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:11:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:28,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:11:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-22 18:11:28,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:28,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621772213] [2023-11-22 18:11:28,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621772213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:28,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835923135] [2023-11-22 18:11:28,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:11:28,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:28,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:28,102 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 18:11:28,120 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 18:11:29,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 18:11:29,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:11:29,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-22 18:11:29,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:29,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 127 [2023-11-22 18:11:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-11-22 18:11:29,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:11:29,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835923135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:11:29,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:11:29,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-22 18:11:29,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235308765] [2023-11-22 18:11:29,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:11:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:11:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:29,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:11:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:11:29,981 INFO L87 Difference]: Start difference. First operand 1482 states and 1867 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-22 18:11:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:31,839 INFO L93 Difference]: Finished difference Result 2905 states and 3665 transitions. [2023-11-22 18:11:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:11:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 197 [2023-11-22 18:11:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:31,843 INFO L225 Difference]: With dead ends: 2905 [2023-11-22 18:11:31,843 INFO L226 Difference]: Without dead ends: 1660 [2023-11-22 18:11:31,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-22 18:11:31,845 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 136 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:31,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 825 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-22 18:11:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2023-11-22 18:11:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1486. [2023-11-22 18:11:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1446 states have (on average 1.2510373443983402) internal successors, (1809), 1450 states have internal predecessors, (1809), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 18:11:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1873 transitions. [2023-11-22 18:11:31,873 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1873 transitions. Word has length 197 [2023-11-22 18:11:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:31,874 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 1873 transitions. [2023-11-22 18:11:31,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-22 18:11:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1873 transitions. [2023-11-22 18:11:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-22 18:11:31,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:31,876 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 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, 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] [2023-11-22 18:11:31,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-22 18:11:32,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:32,090 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:32,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash -706043877, now seen corresponding path program 1 times [2023-11-22 18:11:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:32,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373516228] [2023-11-22 18:11:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:32,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:32,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:11:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 18:11:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-22 18:11:32,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:32,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373516228] [2023-11-22 18:11:32,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373516228] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:32,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150904127] [2023-11-22 18:11:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:32,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:32,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:32,448 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 18:11:32,491 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 18:11:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:33,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:11:33,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-22 18:11:33,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:11:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-22 18:11:33,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150904127] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:11:33,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:11:33,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2023-11-22 18:11:33,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764494464] [2023-11-22 18:11:33,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:11:33,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 18:11:33,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:33,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 18:11:33,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:11:33,431 INFO L87 Difference]: Start difference. First operand 1486 states and 1873 transitions. Second operand has 14 states, 14 states have (on average 17.0) internal successors, (238), 12 states have internal predecessors, (238), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:34,605 INFO L93 Difference]: Finished difference Result 8915 states and 11227 transitions. [2023-11-22 18:11:34,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 18:11:34,605 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.0) internal successors, (238), 12 states have internal predecessors, (238), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 202 [2023-11-22 18:11:34,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:34,619 INFO L225 Difference]: With dead ends: 8915 [2023-11-22 18:11:34,619 INFO L226 Difference]: Without dead ends: 8909 [2023-11-22 18:11:34,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 406 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:11:34,623 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 345 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:34,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1061 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 18:11:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8909 states. [2023-11-22 18:11:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8909 to 7006. [2023-11-22 18:11:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 6966 states have (on average 1.2661498708010337) internal successors, (8820), 6970 states have internal predecessors, (8820), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 18:11:34,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 8884 transitions. [2023-11-22 18:11:34,720 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 8884 transitions. Word has length 202 [2023-11-22 18:11:34,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:34,721 INFO L495 AbstractCegarLoop]: Abstraction has 7006 states and 8884 transitions. [2023-11-22 18:11:34,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.0) internal successors, (238), 12 states have internal predecessors, (238), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 8884 transitions. [2023-11-22 18:11:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-22 18:11:34,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:34,732 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 6, 6, 4, 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] [2023-11-22 18:11:34,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-22 18:11:34,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-22 18:11:34,948 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:34,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:34,948 INFO L85 PathProgramCache]: Analyzing trace with hash 874497061, now seen corresponding path program 2 times [2023-11-22 18:11:34,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:34,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653176048] [2023-11-22 18:11:34,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:34,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:35,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:11:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 18:11:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 199 proven. 28 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-22 18:11:35,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:35,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653176048] [2023-11-22 18:11:35,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653176048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:35,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18458195] [2023-11-22 18:11:35,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:11:35,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:35,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:35,239 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 18:11:35,253 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 18:11:36,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:11:36,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:11:36,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 18:11:36,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 208 proven. 19 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-22 18:11:36,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:11:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 208 proven. 19 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-22 18:11:36,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18458195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:11:36,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:11:36,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-11-22 18:11:36,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277740559] [2023-11-22 18:11:36,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:11:36,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 18:11:36,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:11:36,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 18:11:36,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:11:36,376 INFO L87 Difference]: Start difference. First operand 7006 states and 8884 transitions. Second operand has 10 states, 10 states have (on average 19.2) internal successors, (192), 8 states have internal predecessors, (192), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:37,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:11:37,243 INFO L93 Difference]: Finished difference Result 13027 states and 16517 transitions. [2023-11-22 18:11:37,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:11:37,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 8 states have internal predecessors, (192), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 252 [2023-11-22 18:11:37,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:11:37,266 INFO L225 Difference]: With dead ends: 13027 [2023-11-22 18:11:37,266 INFO L226 Difference]: Without dead ends: 10286 [2023-11-22 18:11:37,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:11:37,273 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 342 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:11:37,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 743 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 18:11:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2023-11-22 18:11:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 6916. [2023-11-22 18:11:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6916 states, 6876 states have (on average 1.256544502617801) internal successors, (8640), 6880 states have internal predecessors, (8640), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 18:11:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 8704 transitions. [2023-11-22 18:11:37,365 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 8704 transitions. Word has length 252 [2023-11-22 18:11:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:11:37,366 INFO L495 AbstractCegarLoop]: Abstraction has 6916 states and 8704 transitions. [2023-11-22 18:11:37,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 8 states have internal predecessors, (192), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 18:11:37,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 8704 transitions. [2023-11-22 18:11:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-11-22 18:11:37,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:11:37,376 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 4, 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] [2023-11-22 18:11:37,394 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 18:11:37,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-22 18:11:37,592 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:11:37,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:11:37,592 INFO L85 PathProgramCache]: Analyzing trace with hash -465000675, now seen corresponding path program 3 times [2023-11-22 18:11:37,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:11:37,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779206369] [2023-11-22 18:11:37,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:11:37,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:11:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:11:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:37,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:11:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:37,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:11:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:37,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:11:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 18:11:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:11:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 392 proven. 16 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2023-11-22 18:11:37,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:11:37,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779206369] [2023-11-22 18:11:37,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779206369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:11:37,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62759887] [2023-11-22 18:11:37,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:11:37,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:11:37,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:11:37,973 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 18:11:37,974 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 18:11:38,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 18:11:38,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:11:38,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-22 18:11:38,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:11:39,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 127 [2023-11-22 18:11:39,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:11:39,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 114 treesize of output 134 [2023-11-22 18:11:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2023-11-22 18:11:40,092 INFO L327 TraceCheckSpWp]: Computing backward predicates...