./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/memory-model/2SB.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/memory-model/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 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:47:27,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:47:27,644 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 18:47:27,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:47:27,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:47:27,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:47:27,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:47:27,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:47:27,678 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:47:27,682 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:47:27,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:47:27,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:47:27,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:47:27,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:47:27,685 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:47:27,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:47:27,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:47:27,685 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 18:47:27,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:47:27,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 18:47:27,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:47:27,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:47:27,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:47:27,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:47:27,687 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 18:47:27,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:47:27,688 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:47:27,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:47:27,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:47:27,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:47:27,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:47:27,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:47:27,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:47:27,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:47:27,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:47:27,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:47:27,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:47:27,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:47:27,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:47:27,691 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:47:27,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:47:27,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:47:27,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec14f16ae81e958645b6575cf97932d8a09e14a8eafa007b1475b8cf31c9f62 [2023-11-22 18:47:27,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:47:27,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:47:27,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:47:27,897 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:47:27,897 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:47:27,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memory-model/2SB.i [2023-11-22 18:47:28,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:47:29,186 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:47:29,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i [2023-11-22 18:47:29,196 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10fa723b/325f3e7502944dfaa6c227d095c1f9b1/FLAG942439de5 [2023-11-22 18:47:29,207 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10fa723b/325f3e7502944dfaa6c227d095c1f9b1 [2023-11-22 18:47:29,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:47:29,210 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:47:29,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:47:29,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:47:29,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:47:29,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50768441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29, skipping insertion in model container [2023-11-22 18:47:29,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:47:29,465 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 18:47:29,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:47:29,477 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:47:29,563 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 18:47:29,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:47:29,588 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:47:29,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29 WrapperNode [2023-11-22 18:47:29,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:47:29,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:47:29,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:47:29,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:47:29,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,681 INFO L138 Inliner]: procedures = 28, calls = 405, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 900 [2023-11-22 18:47:29,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:47:29,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:47:29,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:47:29,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:47:29,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,706 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,742 INFO L189 HeapSplitter]: Split 301 memory accesses to 14 slices as follows [3, 12, 13, 15, 11, 13, 10, 10, 48, 76, 3, 10, 40, 37] [2023-11-22 18:47:29,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,785 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,826 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:47:29,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:47:29,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:47:29,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:47:29,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (1/1) ... [2023-11-22 18:47:29,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:47:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:29,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 18:47:29,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 18:47:29,954 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2023-11-22 18:47:29,955 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2023-11-22 18:47:29,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2023-11-22 18:47:29,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2023-11-22 18:47:29,955 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2023-11-22 18:47:29,955 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2023-11-22 18:47:29,956 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2023-11-22 18:47:29,957 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2023-11-22 18:47:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-22 18:47:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-22 18:47:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-22 18:47:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-22 18:47:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-22 18:47:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-22 18:47:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-22 18:47:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-22 18:47:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-11-22 18:47:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-11-22 18:47:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2023-11-22 18:47:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2023-11-22 18:47:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2023-11-22 18:47:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2023-11-22 18:47:29,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 18:47:29,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 18:47:29,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 18:47:29,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 18:47:29,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 18:47:29,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 18:47:29,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-22 18:47:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-22 18:47:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-22 18:47:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-22 18:47:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-22 18:47:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-22 18:47:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-22 18:47:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-22 18:47:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-22 18:47:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 18:47:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 18:47:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 18:47:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 18:47:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 18:47:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-22 18:47:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-22 18:47:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-22 18:47:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-22 18:47:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-22 18:47:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-22 18:47:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-22 18:47:29,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-22 18:47:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-22 18:47:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_2_conditions [2023-11-22 18:47:29,965 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_2_conditions [2023-11-22 18:47:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:47:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:47:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:47:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 18:47:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 18:47:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 18:47:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 18:47:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 18:47:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 18:47:29,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 18:47:29,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-22 18:47:29,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-22 18:47:29,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-22 18:47:29,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-22 18:47:29,968 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2023-11-22 18:47:29,968 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2023-11-22 18:47:29,968 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2023-11-22 18:47:29,968 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2023-11-22 18:47:29,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:47:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:47:29,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 18:47:30,135 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:47:30,137 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:47:30,755 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:47:30,815 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:47:30,816 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-22 18:47:30,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:47:30 BoogieIcfgContainer [2023-11-22 18:47:30,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:47:30,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:47:30,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:47:30,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:47:30,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:47:29" (1/3) ... [2023-11-22 18:47:30,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c11904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:47:30, skipping insertion in model container [2023-11-22 18:47:30,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:47:29" (2/3) ... [2023-11-22 18:47:30,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c11904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:47:30, skipping insertion in model container [2023-11-22 18:47:30,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:47:30" (3/3) ... [2023-11-22 18:47:30,825 INFO L112 eAbstractionObserver]: Analyzing ICFG 2SB.i [2023-11-22 18:47:30,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:47:30,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:47:30,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:47:30,887 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;@41cee32d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:47:30,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:47:30,891 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 18:47:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-22 18:47:30,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:30,899 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 18:47:30,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:30,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1631832828, now seen corresponding path program 1 times [2023-11-22 18:47:30,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:30,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662091768] [2023-11-22 18:47:30,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:30,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 18:47:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:47:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 18:47:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:47:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:31,590 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 18:47:31,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:31,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662091768] [2023-11-22 18:47:31,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662091768] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:31,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034205448] [2023-11-22 18:47:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:31,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:31,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:31,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:31,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 18:47:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:31,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-22 18:47:31,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:31,891 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 18:47:31,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034205448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:31,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:31,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2023-11-22 18:47:31,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982215678] [2023-11-22 18:47:31,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:31,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 18:47:31,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:31,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 18:47:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:47:31,921 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 18:47:32,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:32,121 INFO L93 Difference]: Finished difference Result 308 states and 482 transitions. [2023-11-22 18:47:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 18:47:32,123 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 18:47:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:32,129 INFO L225 Difference]: With dead ends: 308 [2023-11-22 18:47:32,129 INFO L226 Difference]: Without dead ends: 147 [2023-11-22 18:47:32,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:47:32,134 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 18:47:32,135 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 18:47:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-22 18:47:32,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-22 18:47:32,169 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 18:47:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 194 transitions. [2023-11-22 18:47:32,176 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 194 transitions. Word has length 40 [2023-11-22 18:47:32,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:32,178 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 194 transitions. [2023-11-22 18:47:32,180 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 18:47:32,181 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 194 transitions. [2023-11-22 18:47:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-22 18:47:32,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:32,183 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 18:47:32,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 18:47:32,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-22 18:47:32,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:32,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash -707999250, now seen corresponding path program 1 times [2023-11-22 18:47:32,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:32,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672524374] [2023-11-22 18:47:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:32,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:32,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 18:47:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:32,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 18:47:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:32,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 18:47:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:32,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:47:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:32,580 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 18:47:32,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:32,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672524374] [2023-11-22 18:47:32,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672524374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:32,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894805628] [2023-11-22 18:47:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:32,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:32,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:32,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:32,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 18:47:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:32,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:32,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:32,882 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 18:47:32,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:32,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894805628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:32,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:32,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-22 18:47:32,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632194225] [2023-11-22 18:47:32,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:32,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:32,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:32,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:32,886 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 18:47:33,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:33,192 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2023-11-22 18:47:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:33,195 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 18:47:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:33,196 INFO L225 Difference]: With dead ends: 293 [2023-11-22 18:47:33,196 INFO L226 Difference]: Without dead ends: 148 [2023-11-22 18:47:33,197 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 18:47:33,199 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 18:47:33,199 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 18:47:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-22 18:47:33,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-22 18:47:33,213 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 18:47:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 195 transitions. [2023-11-22 18:47:33,215 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 195 transitions. Word has length 41 [2023-11-22 18:47:33,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:33,216 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 195 transitions. [2023-11-22 18:47:33,216 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 18:47:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 195 transitions. [2023-11-22 18:47:33,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-22 18:47:33,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:33,221 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 18:47:33,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-22 18:47:33,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-22 18:47:33,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:33,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1485248369, now seen corresponding path program 1 times [2023-11-22 18:47:33,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:33,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085365823] [2023-11-22 18:47:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:33,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:47:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:33,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:47:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-22 18:47:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:33,676 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 18:47:33,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:33,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085365823] [2023-11-22 18:47:33,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085365823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:33,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049880291] [2023-11-22 18:47:33,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:33,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:33,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:33,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:33,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 18:47:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:33,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:33,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:33,950 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 18:47:33,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:33,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049880291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:33,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:33,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:33,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804702303] [2023-11-22 18:47:33,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:33,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:33,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:33,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:33,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:33,952 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 18:47:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:34,230 INFO L93 Difference]: Finished difference Result 292 states and 387 transitions. [2023-11-22 18:47:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:34,231 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 18:47:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:34,232 INFO L225 Difference]: With dead ends: 292 [2023-11-22 18:47:34,232 INFO L226 Difference]: Without dead ends: 149 [2023-11-22 18:47:34,233 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 18:47:34,233 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:34,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:47:34,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-22 18:47:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-22 18:47:34,240 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 18:47:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2023-11-22 18:47:34,241 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 42 [2023-11-22 18:47:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:34,241 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2023-11-22 18:47:34,241 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 18:47:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2023-11-22 18:47:34,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-22 18:47:34,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:34,242 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 18:47:34,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 18:47:34,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:34,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:34,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:34,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1550976507, now seen corresponding path program 1 times [2023-11-22 18:47:34,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:34,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469783648] [2023-11-22 18:47:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:47:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:47:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,603 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 18:47:34,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469783648] [2023-11-22 18:47:34,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469783648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:34,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602547832] [2023-11-22 18:47:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:34,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:34,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:34,625 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:34,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 18:47:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:34,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:34,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:34,865 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 18:47:34,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602547832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:34,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:34,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:34,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77928524] [2023-11-22 18:47:34,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:34,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:34,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:34,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:34,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:34,868 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 18:47:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:35,160 INFO L93 Difference]: Finished difference Result 284 states and 374 transitions. [2023-11-22 18:47:35,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:35,160 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 18:47:35,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:35,161 INFO L225 Difference]: With dead ends: 284 [2023-11-22 18:47:35,161 INFO L226 Difference]: Without dead ends: 156 [2023-11-22 18:47:35,162 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 18:47:35,163 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 18:47:35,163 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 18:47:35,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-22 18:47:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2023-11-22 18:47:35,192 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 18:47:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 197 transitions. [2023-11-22 18:47:35,196 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 197 transitions. Word has length 44 [2023-11-22 18:47:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:35,196 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 197 transitions. [2023-11-22 18:47:35,196 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 18:47:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 197 transitions. [2023-11-22 18:47:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-22 18:47:35,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:35,200 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 18:47:35,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 18:47:35,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:35,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:35,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:35,403 INFO L85 PathProgramCache]: Analyzing trace with hash 594470631, now seen corresponding path program 1 times [2023-11-22 18:47:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:35,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666501010] [2023-11-22 18:47:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:35,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:35,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:47:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:35,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-22 18:47:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:35,546 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 18:47:35,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:35,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666501010] [2023-11-22 18:47:35,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666501010] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:35,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228753157] [2023-11-22 18:47:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:35,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:35,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:35,562 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:35,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 18:47:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:35,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:35,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:35,811 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 18:47:35,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:35,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228753157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:35,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:35,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:35,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406573326] [2023-11-22 18:47:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:35,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:35,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:35,814 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 18:47:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:36,103 INFO L93 Difference]: Finished difference Result 275 states and 363 transitions. [2023-11-22 18:47:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:36,104 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 18:47:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:36,105 INFO L225 Difference]: With dead ends: 275 [2023-11-22 18:47:36,105 INFO L226 Difference]: Without dead ends: 157 [2023-11-22 18:47:36,105 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 18:47:36,106 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 18:47:36,106 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 18:47:36,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-22 18:47:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2023-11-22 18:47:36,111 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 18:47:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2023-11-22 18:47:36,112 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 47 [2023-11-22 18:47:36,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:36,113 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2023-11-22 18:47:36,113 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 18:47:36,113 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2023-11-22 18:47:36,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-22 18:47:36,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:36,114 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 18:47:36,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 18:47:36,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:36,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:36,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:36,328 INFO L85 PathProgramCache]: Analyzing trace with hash -976296171, now seen corresponding path program 1 times [2023-11-22 18:47:36,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:36,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353272576] [2023-11-22 18:47:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:36,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:36,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:47:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:47:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:36,540 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 18:47:36,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:36,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353272576] [2023-11-22 18:47:36,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353272576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:36,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352188223] [2023-11-22 18:47:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:36,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:36,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:36,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:36,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 18:47:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:36,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:36,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:36,816 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 18:47:36,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:36,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352188223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:36,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:36,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:36,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182160718] [2023-11-22 18:47:36,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:36,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:36,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:36,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:36,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:36,819 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 18:47:37,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:37,159 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2023-11-22 18:47:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:37,159 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 18:47:37,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:37,160 INFO L225 Difference]: With dead ends: 187 [2023-11-22 18:47:37,160 INFO L226 Difference]: Without dead ends: 181 [2023-11-22 18:47:37,160 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 18:47:37,161 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 47 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:37,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 309 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:47:37,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-22 18:47:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 152. [2023-11-22 18:47:37,166 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 18:47:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2023-11-22 18:47:37,167 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 50 [2023-11-22 18:47:37,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:37,167 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2023-11-22 18:47:37,167 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 18:47:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2023-11-22 18:47:37,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-22 18:47:37,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:37,169 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 18:47:37,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-22 18:47:37,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:37,396 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:37,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:37,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1674374375, now seen corresponding path program 1 times [2023-11-22 18:47:37,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:37,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034268781] [2023-11-22 18:47:37,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:37,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:47:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:47:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,624 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 18:47:37,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:37,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034268781] [2023-11-22 18:47:37,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034268781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:37,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459880184] [2023-11-22 18:47:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:37,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:37,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:37,649 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:37,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 18:47:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:37,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:47:37,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:37,929 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 18:47:37,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:37,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459880184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:37,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:37,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:37,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310589067] [2023-11-22 18:47:37,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:37,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:37,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:37,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:37,931 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 18:47:38,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:38,213 INFO L93 Difference]: Finished difference Result 189 states and 256 transitions. [2023-11-22 18:47:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:38,214 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 18:47:38,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:38,215 INFO L225 Difference]: With dead ends: 189 [2023-11-22 18:47:38,215 INFO L226 Difference]: Without dead ends: 153 [2023-11-22 18:47:38,215 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 18:47:38,216 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:38,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:47:38,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-22 18:47:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-22 18:47:38,221 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 18:47:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 200 transitions. [2023-11-22 18:47:38,221 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 200 transitions. Word has length 60 [2023-11-22 18:47:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:38,222 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 200 transitions. [2023-11-22 18:47:38,222 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 18:47:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 200 transitions. [2023-11-22 18:47:38,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-22 18:47:38,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:38,223 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 18:47:38,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 18:47:38,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:38,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:38,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:38,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1940534551, now seen corresponding path program 1 times [2023-11-22 18:47:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:38,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057875827] [2023-11-22 18:47:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:38,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:47:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:38,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:47:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:38,610 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 18:47:38,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:38,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057875827] [2023-11-22 18:47:38,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057875827] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:38,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667330006] [2023-11-22 18:47:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:38,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:38,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:38,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:38,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 18:47:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:38,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:47:38,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:38,908 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 18:47:38,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:38,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667330006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:38,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:38,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:38,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538070055] [2023-11-22 18:47:38,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:38,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:38,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:38,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:38,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:38,911 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 18:47:39,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:39,206 INFO L93 Difference]: Finished difference Result 190 states and 256 transitions. [2023-11-22 18:47:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:39,206 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 18:47:39,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:39,207 INFO L225 Difference]: With dead ends: 190 [2023-11-22 18:47:39,208 INFO L226 Difference]: Without dead ends: 184 [2023-11-22 18:47:39,208 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 18:47:39,208 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 37 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:39,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:47:39,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-22 18:47:39,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2023-11-22 18:47:39,215 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 18:47:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 248 transitions. [2023-11-22 18:47:39,216 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 248 transitions. Word has length 60 [2023-11-22 18:47:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:39,216 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 248 transitions. [2023-11-22 18:47:39,217 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 18:47:39,217 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 248 transitions. [2023-11-22 18:47:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-22 18:47:39,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:39,218 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 18:47:39,244 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 18:47:39,430 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 18:47:39,431 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:39,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:39,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1413461973, now seen corresponding path program 1 times [2023-11-22 18:47:39,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:39,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540662342] [2023-11-22 18:47:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:39,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:39,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:47:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:39,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:47:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:39,596 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 18:47:39,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:39,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540662342] [2023-11-22 18:47:39,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540662342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:39,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647133436] [2023-11-22 18:47:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:39,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:39,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:39,612 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 18:47:39,635 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 18:47:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:39,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:47:39,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:39,950 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 18:47:39,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:39,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647133436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:39,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:39,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325930792] [2023-11-22 18:47:39,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:39,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:39,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:39,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:39,952 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 18:47:40,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:40,151 INFO L93 Difference]: Finished difference Result 251 states and 353 transitions. [2023-11-22 18:47:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:40,151 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 18:47:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:40,153 INFO L225 Difference]: With dead ends: 251 [2023-11-22 18:47:40,153 INFO L226 Difference]: Without dead ends: 245 [2023-11-22 18:47:40,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:40,153 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:40,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:47:40,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-22 18:47:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-11-22 18:47:40,162 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 18:47:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 346 transitions. [2023-11-22 18:47:40,163 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 346 transitions. Word has length 74 [2023-11-22 18:47:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:40,165 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 346 transitions. [2023-11-22 18:47:40,165 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 18:47:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 346 transitions. [2023-11-22 18:47:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-22 18:47:40,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:40,166 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 18:47:40,194 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 18:47:40,379 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 18:47:40,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:40,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:40,380 INFO L85 PathProgramCache]: Analyzing trace with hash 58504681, now seen corresponding path program 1 times [2023-11-22 18:47:40,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:40,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511294016] [2023-11-22 18:47:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:40,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:47:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:47:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,565 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 18:47:40,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:40,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511294016] [2023-11-22 18:47:40,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511294016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:40,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055143071] [2023-11-22 18:47:40,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:40,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:40,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:40,581 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 18:47:40,632 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 18:47:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:40,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:47:40,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:40,960 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 18:47:40,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:40,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055143071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:40,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:40,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:40,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564772482] [2023-11-22 18:47:40,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:40,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:40,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:40,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:40,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:40,963 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 18:47:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:41,180 INFO L93 Difference]: Finished difference Result 375 states and 549 transitions. [2023-11-22 18:47:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:41,181 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 18:47:41,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:41,182 INFO L225 Difference]: With dead ends: 375 [2023-11-22 18:47:41,182 INFO L226 Difference]: Without dead ends: 369 [2023-11-22 18:47:41,183 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 18:47:41,183 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:41,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 353 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:47:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-22 18:47:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-11-22 18:47:41,190 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 18:47:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 542 transitions. [2023-11-22 18:47:41,191 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 542 transitions. Word has length 90 [2023-11-22 18:47:41,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:41,191 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 542 transitions. [2023-11-22 18:47:41,192 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 18:47:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 542 transitions. [2023-11-22 18:47:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-22 18:47:41,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:41,193 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 18:47:41,205 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 18:47:41,403 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 18:47:41,403 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:41,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1840084245, now seen corresponding path program 1 times [2023-11-22 18:47:41,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:41,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958113526] [2023-11-22 18:47:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:41,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:41,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:47:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:41,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:47:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-22 18:47:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958113526] [2023-11-22 18:47:41,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958113526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888645965] [2023-11-22 18:47:41,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:41,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:41,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:41,585 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 18:47:41,623 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 18:47:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:41,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:47:41,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-22 18:47:41,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:41,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888645965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:41,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:41,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 18:47:41,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301720798] [2023-11-22 18:47:41,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:41,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:47:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:47:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:41,949 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 18:47:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:42,210 INFO L93 Difference]: Finished difference Result 623 states and 941 transitions. [2023-11-22 18:47:42,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:47:42,210 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 18:47:42,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:42,212 INFO L225 Difference]: With dead ends: 623 [2023-11-22 18:47:42,212 INFO L226 Difference]: Without dead ends: 617 [2023-11-22 18:47:42,213 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 18:47:42,213 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 18:47:42,213 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 18:47:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-11-22 18:47:42,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2023-11-22 18:47:42,226 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 18:47:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 934 transitions. [2023-11-22 18:47:42,229 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 934 transitions. Word has length 100 [2023-11-22 18:47:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:42,229 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 934 transitions. [2023-11-22 18:47:42,229 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 18:47:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 934 transitions. [2023-11-22 18:47:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-22 18:47:42,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:42,231 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 18:47:42,244 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 18:47:42,444 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 18:47:42,445 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:42,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:42,445 INFO L85 PathProgramCache]: Analyzing trace with hash 394013531, now seen corresponding path program 1 times [2023-11-22 18:47:42,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:42,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195323483] [2023-11-22 18:47:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:42,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:42,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 18:47:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 18:47:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 18:47:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:42,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:47:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:42,653 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 18:47:42,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:42,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195323483] [2023-11-22 18:47:42,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195323483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:42,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546061447] [2023-11-22 18:47:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:42,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:42,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:42,677 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 18:47:42,680 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 18:47:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:42,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:47:43,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:43,032 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 18:47:43,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:47:43,081 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 18:47:43,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546061447] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:47:43,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:47:43,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 4] total 8 [2023-11-22 18:47:43,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705068560] [2023-11-22 18:47:43,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:47:43,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:47:43,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:43,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:47:43,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:47:43,083 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 18:47:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:43,815 INFO L93 Difference]: Finished difference Result 1234 states and 1870 transitions. [2023-11-22 18:47:43,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:47:43,816 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 18:47:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:43,818 INFO L225 Difference]: With dead ends: 1234 [2023-11-22 18:47:43,818 INFO L226 Difference]: Without dead ends: 620 [2023-11-22 18:47:43,819 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 18:47:43,819 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 18:47:43,819 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 18:47:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-11-22 18:47:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2023-11-22 18:47:43,832 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 18:47:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 937 transitions. [2023-11-22 18:47:43,835 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 937 transitions. Word has length 130 [2023-11-22 18:47:43,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:43,835 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 937 transitions. [2023-11-22 18:47:43,835 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 18:47:43,836 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 937 transitions. [2023-11-22 18:47:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-22 18:47:43,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:43,837 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 18:47:43,862 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 18:47:44,050 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 18:47:44,051 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:44,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1076598680, now seen corresponding path program 2 times [2023-11-22 18:47:44,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:44,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390419918] [2023-11-22 18:47:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:44,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:44,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:47:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:47:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 18:47:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:44,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-22 18:47:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:44,303 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 18:47:44,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390419918] [2023-11-22 18:47:44,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390419918] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829518193] [2023-11-22 18:47:44,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:47:44,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:44,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:44,305 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 18:47:44,329 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 18:47:44,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:47:44,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:47:44,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:47:44,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:44,905 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 18:47:44,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:47:44,976 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 18:47:44,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829518193] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:47:44,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:47:44,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 14 [2023-11-22 18:47:44,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606714201] [2023-11-22 18:47:44,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:47:44,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 18:47:44,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:44,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 18:47:44,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:47:44,979 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 18:47:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:45,848 INFO L93 Difference]: Finished difference Result 1240 states and 1881 transitions. [2023-11-22 18:47:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 18:47:45,848 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 18:47:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:45,850 INFO L225 Difference]: With dead ends: 1240 [2023-11-22 18:47:45,850 INFO L226 Difference]: Without dead ends: 626 [2023-11-22 18:47:45,851 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 18:47:45,851 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:45,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 981 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 18:47:45,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-22 18:47:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2023-11-22 18:47:45,861 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 18:47:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 943 transitions. [2023-11-22 18:47:45,862 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 943 transitions. Word has length 133 [2023-11-22 18:47:45,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:45,863 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 943 transitions. [2023-11-22 18:47:45,863 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 18:47:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 943 transitions. [2023-11-22 18:47:45,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-22 18:47:45,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:45,864 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 18:47:45,878 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 18:47:46,077 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 18:47:46,078 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:46,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash 943145735, now seen corresponding path program 3 times [2023-11-22 18:47:46,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:46,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792927872] [2023-11-22 18:47:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:46,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:46,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:46,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:46,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:46,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:47:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:46,356 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 18:47:46,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:46,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792927872] [2023-11-22 18:47:46,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792927872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:46,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846506369] [2023-11-22 18:47:46,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:47:46,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:46,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:46,358 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 18:47:46,384 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 18:47:46,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 18:47:46,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:47:46,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-22 18:47:46,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:47,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 82 [2023-11-22 18:47:47,391 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 18:47:47,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:47:47,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846506369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:47,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:47:47,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2023-11-22 18:47:47,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842097054] [2023-11-22 18:47:47,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:47,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:47:47,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:47,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:47:47,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:47:47,394 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 18:47:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:48,636 INFO L93 Difference]: Finished difference Result 1194 states and 1824 transitions. [2023-11-22 18:47:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:47:48,636 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 18:47:48,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:48,639 INFO L225 Difference]: With dead ends: 1194 [2023-11-22 18:47:48,639 INFO L226 Difference]: Without dead ends: 685 [2023-11-22 18:47:48,639 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 18:47:48,640 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 115 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:48,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 743 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 18:47:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-11-22 18:47:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 634. [2023-11-22 18:47:48,653 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 18:47:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 955 transitions. [2023-11-22 18:47:48,655 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 955 transitions. Word has length 140 [2023-11-22 18:47:48,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:48,655 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 955 transitions. [2023-11-22 18:47:48,655 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 18:47:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 955 transitions. [2023-11-22 18:47:48,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-22 18:47:48,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:48,657 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 18:47:48,671 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 18:47:48,870 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 18:47:48,871 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:48,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:48,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1387889227, now seen corresponding path program 1 times [2023-11-22 18:47:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:48,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893588451] [2023-11-22 18:47:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:48,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:49,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:47:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 18:47:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:49,115 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 18:47:49,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:49,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893588451] [2023-11-22 18:47:49,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893588451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:49,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651650798] [2023-11-22 18:47:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:49,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:49,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:49,118 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 18:47:49,139 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 18:47:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:49,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:47:49,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:49,551 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 18:47:49,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:47:49,591 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 18:47:49,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651650798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:47:49,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:47:49,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-22 18:47:49,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910433812] [2023-11-22 18:47:49,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:47:49,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:47:49,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:47:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:47:49,593 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 18:47:50,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:50,308 INFO L93 Difference]: Finished difference Result 1258 states and 1902 transitions. [2023-11-22 18:47:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:47:50,309 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 18:47:50,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:50,311 INFO L225 Difference]: With dead ends: 1258 [2023-11-22 18:47:50,311 INFO L226 Difference]: Without dead ends: 655 [2023-11-22 18:47:50,311 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 18:47:50,312 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 33 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:50,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 605 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 18:47:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-22 18:47:50,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2023-11-22 18:47:50,324 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 18:47:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 982 transitions. [2023-11-22 18:47:50,325 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 982 transitions. Word has length 149 [2023-11-22 18:47:50,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:50,325 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 982 transitions. [2023-11-22 18:47:50,326 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 18:47:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 982 transitions. [2023-11-22 18:47:50,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-22 18:47:50,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:50,327 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 18:47:50,341 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 18:47:50,541 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 18:47:50,541 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:50,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:50,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1107637205, now seen corresponding path program 2 times [2023-11-22 18:47:50,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:50,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735985051] [2023-11-22 18:47:50,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:50,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 18:47:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:47:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:50,774 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 18:47:50,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:50,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735985051] [2023-11-22 18:47:50,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735985051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:50,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037803421] [2023-11-22 18:47:50,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:47:50,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:50,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:50,776 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 18:47:50,816 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 18:47:51,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:47:51,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:47:51,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:47:51,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:51,578 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 18:47:51,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:47:51,650 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 18:47:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037803421] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:47:51,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:47:51,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2023-11-22 18:47:51,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135019675] [2023-11-22 18:47:51,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:47:51,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 18:47:51,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:51,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 18:47:51,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:47:51,653 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 18:47:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:52,684 INFO L93 Difference]: Finished difference Result 1306 states and 1967 transitions. [2023-11-22 18:47:52,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 18:47:52,684 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 18:47:52,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:52,686 INFO L225 Difference]: With dead ends: 1306 [2023-11-22 18:47:52,686 INFO L226 Difference]: Without dead ends: 703 [2023-11-22 18:47:52,687 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 18:47:52,688 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 18:47:52,688 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 18:47:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2023-11-22 18:47:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2023-11-22 18:47:52,717 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 18:47:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1036 transitions. [2023-11-22 18:47:52,722 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1036 transitions. Word has length 158 [2023-11-22 18:47:52,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:52,723 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1036 transitions. [2023-11-22 18:47:52,724 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 18:47:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1036 transitions. [2023-11-22 18:47:52,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:47:52,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:52,740 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 18:47:52,761 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 18:47:52,954 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 18:47:52,955 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:52,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:52,955 INFO L85 PathProgramCache]: Analyzing trace with hash -262875205, now seen corresponding path program 3 times [2023-11-22 18:47:52,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:52,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763594952] [2023-11-22 18:47:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:52,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:47:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:47:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:53,339 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 18:47:53,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:53,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763594952] [2023-11-22 18:47:53,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763594952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:53,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:47:53,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:47:53,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077849989] [2023-11-22 18:47:53,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:53,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:47:53,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:53,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:47:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:53,343 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 18:47:54,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:54,134 INFO L93 Difference]: Finished difference Result 1743 states and 2691 transitions. [2023-11-22 18:47:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:47:54,135 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 18:47:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:54,139 INFO L225 Difference]: With dead ends: 1743 [2023-11-22 18:47:54,139 INFO L226 Difference]: Without dead ends: 1241 [2023-11-22 18:47:54,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:47:54,141 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 61 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 18:47:54,141 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 18:47:54,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2023-11-22 18:47:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 841. [2023-11-22 18:47:54,161 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 18:47:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1244 transitions. [2023-11-22 18:47:54,162 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1244 transitions. Word has length 176 [2023-11-22 18:47:54,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:54,163 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1244 transitions. [2023-11-22 18:47:54,163 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 18:47:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1244 transitions. [2023-11-22 18:47:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:47:54,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:54,165 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 18:47:54,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 18:47:54,165 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:54,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:54,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1900630977, now seen corresponding path program 1 times [2023-11-22 18:47:54,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:54,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388579816] [2023-11-22 18:47:54,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:54,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:54,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:54,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:54,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:47:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:54,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:47:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:54,381 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 18:47:54,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:54,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388579816] [2023-11-22 18:47:54,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388579816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:54,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:47:54,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:47:54,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615576982] [2023-11-22 18:47:54,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:54,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:47:54,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:54,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:47:54,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:47:54,383 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 18:47:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:55,069 INFO L93 Difference]: Finished difference Result 1615 states and 2451 transitions. [2023-11-22 18:47:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:47:55,069 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 18:47:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:55,072 INFO L225 Difference]: With dead ends: 1615 [2023-11-22 18:47:55,072 INFO L226 Difference]: Without dead ends: 969 [2023-11-22 18:47:55,073 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 18:47:55,074 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:55,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 612 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 18:47:55,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-11-22 18:47:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 873. [2023-11-22 18:47:55,089 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 18:47:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1276 transitions. [2023-11-22 18:47:55,126 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1276 transitions. Word has length 176 [2023-11-22 18:47:55,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:55,127 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1276 transitions. [2023-11-22 18:47:55,127 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 18:47:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1276 transitions. [2023-11-22 18:47:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:47:55,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:55,129 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 18:47:55,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 18:47:55,129 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:55,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash 655956295, now seen corresponding path program 1 times [2023-11-22 18:47:55,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:55,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956057116] [2023-11-22 18:47:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:55,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:55,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:47:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:47:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:55,354 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 18:47:55,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:55,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956057116] [2023-11-22 18:47:55,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956057116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:55,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:47:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:47:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104510492] [2023-11-22 18:47:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:55,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:47:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:47:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:47:55,356 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 18:47:55,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:55,921 INFO L93 Difference]: Finished difference Result 1615 states and 2419 transitions. [2023-11-22 18:47:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:47:55,921 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 18:47:55,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:55,924 INFO L225 Difference]: With dead ends: 1615 [2023-11-22 18:47:55,924 INFO L226 Difference]: Without dead ends: 937 [2023-11-22 18:47:55,925 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 18:47:55,925 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 4 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:55,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 612 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:47:55,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-11-22 18:47:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 921. [2023-11-22 18:47:55,943 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 18:47:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1324 transitions. [2023-11-22 18:47:55,945 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1324 transitions. Word has length 176 [2023-11-22 18:47:55,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:55,946 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1324 transitions. [2023-11-22 18:47:55,946 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 18:47:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1324 transitions. [2023-11-22 18:47:55,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:47:55,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:55,949 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 18:47:55,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 18:47:55,949 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:55,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1643108169, now seen corresponding path program 1 times [2023-11-22 18:47:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:55,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157095333] [2023-11-22 18:47:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:47:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:56,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:47:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:56,319 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 18:47:56,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:56,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157095333] [2023-11-22 18:47:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157095333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:56,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:47:56,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:47:56,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356689328] [2023-11-22 18:47:56,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:56,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:47:56,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:56,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:47:56,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:47:56,321 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 18:47:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:56,965 INFO L93 Difference]: Finished difference Result 2015 states and 2963 transitions. [2023-11-22 18:47:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:47:56,965 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 18:47:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:56,969 INFO L225 Difference]: With dead ends: 2015 [2023-11-22 18:47:56,969 INFO L226 Difference]: Without dead ends: 1289 [2023-11-22 18:47:56,970 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 18:47:56,970 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 44 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:56,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 570 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:47:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-11-22 18:47:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1113. [2023-11-22 18:47:56,987 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 18:47:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1596 transitions. [2023-11-22 18:47:56,989 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1596 transitions. Word has length 176 [2023-11-22 18:47:56,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:56,990 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1596 transitions. [2023-11-22 18:47:56,990 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 18:47:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1596 transitions. [2023-11-22 18:47:56,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:47:56,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:56,992 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 18:47:56,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 18:47:56,993 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:56,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:56,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1225711563, now seen corresponding path program 1 times [2023-11-22 18:47:56,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:56,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10605363] [2023-11-22 18:47:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:47:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:47:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:57,202 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 18:47:57,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:57,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10605363] [2023-11-22 18:47:57,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10605363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:57,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:47:57,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:47:57,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739890972] [2023-11-22 18:47:57,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:57,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:47:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:47:57,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:47:57,205 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 18:47:57,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:57,847 INFO L93 Difference]: Finished difference Result 2159 states and 3155 transitions. [2023-11-22 18:47:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:47:57,848 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 18:47:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:57,851 INFO L225 Difference]: With dead ends: 2159 [2023-11-22 18:47:57,851 INFO L226 Difference]: Without dead ends: 1241 [2023-11-22 18:47:57,852 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 18:47:57,853 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 18:47:57,853 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 18:47:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2023-11-22 18:47:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1145. [2023-11-22 18:47:57,875 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 18:47:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1628 transitions. [2023-11-22 18:47:57,877 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1628 transitions. Word has length 176 [2023-11-22 18:47:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:57,877 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1628 transitions. [2023-11-22 18:47:57,878 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 18:47:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1628 transitions. [2023-11-22 18:47:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:47:57,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:57,880 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 18:47:57,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 18:47:57,880 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:57,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:57,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1107681075, now seen corresponding path program 1 times [2023-11-22 18:47:57,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:57,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503548589] [2023-11-22 18:47:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:57,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:58,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:58,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:58,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:47:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:58,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:47:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:58,120 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 18:47:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503548589] [2023-11-22 18:47:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503548589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:58,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:47:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:47:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368433822] [2023-11-22 18:47:58,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:58,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:47:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:58,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:47:58,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:47:58,123 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 18:47:58,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:58,814 INFO L93 Difference]: Finished difference Result 2159 states and 3123 transitions. [2023-11-22 18:47:58,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:47:58,815 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 18:47:58,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:58,818 INFO L225 Difference]: With dead ends: 2159 [2023-11-22 18:47:58,818 INFO L226 Difference]: Without dead ends: 1209 [2023-11-22 18:47:58,819 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 18:47:58,820 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 4 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:58,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 611 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 18:47:58,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2023-11-22 18:47:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1193. [2023-11-22 18:47:58,852 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 18:47:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1676 transitions. [2023-11-22 18:47:58,860 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1676 transitions. Word has length 176 [2023-11-22 18:47:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:58,861 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1676 transitions. [2023-11-22 18:47:58,861 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 18:47:58,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1676 transitions. [2023-11-22 18:47:58,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:47:58,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:58,863 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 18:47:58,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 18:47:58,864 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:58,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:58,864 INFO L85 PathProgramCache]: Analyzing trace with hash -101007291, now seen corresponding path program 2 times [2023-11-22 18:47:58,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:58,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011010957] [2023-11-22 18:47:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:58,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:47:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:47:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,084 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 18:47:59,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:59,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011010957] [2023-11-22 18:47:59,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011010957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:59,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:47:59,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:47:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589115162] [2023-11-22 18:47:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:59,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:47:59,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:59,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:47:59,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:47:59,088 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 18:47:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:59,716 INFO L93 Difference]: Finished difference Result 2287 states and 3251 transitions. [2023-11-22 18:47:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:47:59,716 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 18:47:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:59,719 INFO L225 Difference]: With dead ends: 2287 [2023-11-22 18:47:59,719 INFO L226 Difference]: Without dead ends: 1289 [2023-11-22 18:47:59,721 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 18:47:59,721 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 18:47:59,721 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 18:47:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-11-22 18:47:59,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1193. [2023-11-22 18:47:59,739 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 18:47:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1660 transitions. [2023-11-22 18:47:59,741 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1660 transitions. Word has length 176 [2023-11-22 18:47:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:59,741 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1660 transitions. [2023-11-22 18:47:59,741 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 18:47:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1660 transitions. [2023-11-22 18:47:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:47:59,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:59,744 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 18:47:59,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 18:47:59,744 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:59,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1805469751, now seen corresponding path program 1 times [2023-11-22 18:47:59,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:59,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987592209] [2023-11-22 18:47:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:59,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:47:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:47:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:47:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:47:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:47:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:59,935 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 18:47:59,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:59,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987592209] [2023-11-22 18:47:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987592209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:47:59,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:47:59,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:47:59,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687298121] [2023-11-22 18:47:59,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:47:59,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:47:59,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:59,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:47:59,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:47:59,937 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 18:48:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:00,641 INFO L93 Difference]: Finished difference Result 2351 states and 3315 transitions. [2023-11-22 18:48:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:48:00,641 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 18:48:00,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:00,645 INFO L225 Difference]: With dead ends: 2351 [2023-11-22 18:48:00,645 INFO L226 Difference]: Without dead ends: 1353 [2023-11-22 18:48:00,650 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 18:48:00,651 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 9 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:00,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 630 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 18:48:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2023-11-22 18:48:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1225. [2023-11-22 18:48:00,668 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 18:48:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1676 transitions. [2023-11-22 18:48:00,670 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1676 transitions. Word has length 176 [2023-11-22 18:48:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:00,670 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1676 transitions. [2023-11-22 18:48:00,670 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 18:48:00,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1676 transitions. [2023-11-22 18:48:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:48:00,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:00,673 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 18:48:00,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 18:48:00,673 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:00,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:00,674 INFO L85 PathProgramCache]: Analyzing trace with hash 548061261, now seen corresponding path program 1 times [2023-11-22 18:48:00,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:00,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563029403] [2023-11-22 18:48:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:48:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:48:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:48:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:48:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:48:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:00,989 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 18:48:00,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:00,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563029403] [2023-11-22 18:48:00,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563029403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:00,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:48:00,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 18:48:00,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640582971] [2023-11-22 18:48:00,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:00,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:48:00,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:00,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:48:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:48:00,991 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 18:48:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:01,708 INFO L93 Difference]: Finished difference Result 2687 states and 3683 transitions. [2023-11-22 18:48:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:48:01,709 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 18:48:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:01,714 INFO L225 Difference]: With dead ends: 2687 [2023-11-22 18:48:01,714 INFO L226 Difference]: Without dead ends: 1657 [2023-11-22 18:48:01,715 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 18:48:01,716 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 68 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:01,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 652 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 18:48:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-11-22 18:48:01,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1321. [2023-11-22 18:48:01,739 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 18:48:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1756 transitions. [2023-11-22 18:48:01,741 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1756 transitions. Word has length 176 [2023-11-22 18:48:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:01,741 INFO L495 AbstractCegarLoop]: Abstraction has 1321 states and 1756 transitions. [2023-11-22 18:48:01,742 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 18:48:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1756 transitions. [2023-11-22 18:48:01,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:48:01,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:01,744 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 18:48:01,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 18:48:01,744 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:01,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:01,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1207592783, now seen corresponding path program 1 times [2023-11-22 18:48:01,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:01,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024931588] [2023-11-22 18:48:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:01,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:01,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:48:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:01,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:48:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:01,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:48:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:01,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:48:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:01,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:48:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:01,953 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 18:48:01,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:01,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024931588] [2023-11-22 18:48:01,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024931588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:01,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:48:01,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:48:01,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131928280] [2023-11-22 18:48:01,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:01,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:48:01,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:01,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:48:01,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:48:01,955 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 18:48:02,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:02,838 INFO L93 Difference]: Finished difference Result 2639 states and 3571 transitions. [2023-11-22 18:48:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:48:02,839 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 18:48:02,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:02,843 INFO L225 Difference]: With dead ends: 2639 [2023-11-22 18:48:02,843 INFO L226 Difference]: Without dead ends: 1513 [2023-11-22 18:48:02,844 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 18:48:02,844 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 15 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:02,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 643 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 18:48:02,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2023-11-22 18:48:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1353. [2023-11-22 18:48:02,864 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 18:48:02,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1772 transitions. [2023-11-22 18:48:02,867 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1772 transitions. Word has length 176 [2023-11-22 18:48:02,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:02,867 INFO L495 AbstractCegarLoop]: Abstraction has 1353 states and 1772 transitions. [2023-11-22 18:48:02,867 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 18:48:02,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1772 transitions. [2023-11-22 18:48:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:48:02,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:02,870 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 18:48:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-22 18:48:02,870 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:02,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:02,870 INFO L85 PathProgramCache]: Analyzing trace with hash 363587281, now seen corresponding path program 1 times [2023-11-22 18:48:02,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:02,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495988856] [2023-11-22 18:48:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:02,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:48:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:48:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:48:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:48:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:48:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,108 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 18:48:03,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:03,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495988856] [2023-11-22 18:48:03,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495988856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:03,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:48:03,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:48:03,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468634041] [2023-11-22 18:48:03,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:03,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:48:03,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:48:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:48:03,110 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 18:48:03,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:03,658 INFO L93 Difference]: Finished difference Result 2639 states and 3507 transitions. [2023-11-22 18:48:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:48:03,658 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 18:48:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:03,662 INFO L225 Difference]: With dead ends: 2639 [2023-11-22 18:48:03,662 INFO L226 Difference]: Without dead ends: 1481 [2023-11-22 18:48:03,663 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 18:48:03,664 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 9 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:03,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 630 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:48:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2023-11-22 18:48:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1385. [2023-11-22 18:48:03,690 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 18:48:03,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1788 transitions. [2023-11-22 18:48:03,694 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1788 transitions. Word has length 176 [2023-11-22 18:48:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:03,695 INFO L495 AbstractCegarLoop]: Abstraction has 1385 states and 1788 transitions. [2023-11-22 18:48:03,695 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 18:48:03,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1788 transitions. [2023-11-22 18:48:03,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:48:03,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:03,698 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 18:48:03,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-22 18:48:03,698 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:03,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:03,698 INFO L85 PathProgramCache]: Analyzing trace with hash 291200723, now seen corresponding path program 1 times [2023-11-22 18:48:03,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:03,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037806132] [2023-11-22 18:48:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:03,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:48:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:48:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:48:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:48:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:48:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:03,925 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 18:48:03,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:03,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037806132] [2023-11-22 18:48:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037806132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:03,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:48:03,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:48:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423949105] [2023-11-22 18:48:03,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:03,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:48:03,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:03,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:48:03,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:48:03,927 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 18:48:04,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:04,605 INFO L93 Difference]: Finished difference Result 2639 states and 3443 transitions. [2023-11-22 18:48:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:48:04,605 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 18:48:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:04,609 INFO L225 Difference]: With dead ends: 2639 [2023-11-22 18:48:04,609 INFO L226 Difference]: Without dead ends: 1449 [2023-11-22 18:48:04,610 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 18:48:04,610 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 3 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:04,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 617 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 18:48:04,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-11-22 18:48:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1433. [2023-11-22 18:48:04,628 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 18:48:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1804 transitions. [2023-11-22 18:48:04,629 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1804 transitions. Word has length 176 [2023-11-22 18:48:04,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:04,630 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1804 transitions. [2023-11-22 18:48:04,630 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 18:48:04,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1804 transitions. [2023-11-22 18:48:04,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:48:04,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:04,632 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 18:48:04,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-22 18:48:04,633 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:04,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash 992800597, now seen corresponding path program 1 times [2023-11-22 18:48:04,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:04,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871486270] [2023-11-22 18:48:04,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:04,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:48:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:04,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:48:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:04,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:48:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 18:48:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:04,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:48:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:04,962 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 18:48:04,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871486270] [2023-11-22 18:48:04,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871486270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894049552] [2023-11-22 18:48:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:04,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:04,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:04,988 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:04,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 18:48:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:05,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 18:48:05,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:05,587 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 18:48:05,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:48:05,619 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 18:48:05,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894049552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:48:05,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:48:05,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2023-11-22 18:48:05,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793317238] [2023-11-22 18:48:05,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:48:05,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 18:48:05,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:05,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 18:48:05,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:48:05,621 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 18:48:06,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:06,322 INFO L93 Difference]: Finished difference Result 2789 states and 3516 transitions. [2023-11-22 18:48:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:48:06,322 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 18:48:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:06,326 INFO L225 Difference]: With dead ends: 2789 [2023-11-22 18:48:06,326 INFO L226 Difference]: Without dead ends: 1461 [2023-11-22 18:48:06,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:48:06,327 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:06,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 626 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 18:48:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2023-11-22 18:48:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1461. [2023-11-22 18:48:06,346 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 18:48:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1840 transitions. [2023-11-22 18:48:06,348 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1840 transitions. Word has length 176 [2023-11-22 18:48:06,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:06,348 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 1840 transitions. [2023-11-22 18:48:06,348 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 18:48:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1840 transitions. [2023-11-22 18:48:06,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-22 18:48:06,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:06,351 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 18:48:06,388 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 18:48:06,588 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 18:48:06,588 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:06,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash 60889813, now seen corresponding path program 2 times [2023-11-22 18:48:06,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:06,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323588300] [2023-11-22 18:48:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:06,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:06,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:48:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:48:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:06,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:48:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-22 18:48:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:06,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:48:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:06,932 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 18:48:06,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:06,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323588300] [2023-11-22 18:48:06,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323588300] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:06,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253274707] [2023-11-22 18:48:06,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:48:06,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:06,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:06,935 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:06,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 18:48:07,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:48:07,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:48:07,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 18:48:07,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:07,784 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 18:48:07,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:48:07,864 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 18:48:07,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253274707] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:48:07,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:48:07,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2023-11-22 18:48:07,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202387403] [2023-11-22 18:48:07,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:48:07,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 18:48:07,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:07,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 18:48:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:48:07,866 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 18:48:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:08,845 INFO L93 Difference]: Finished difference Result 2810 states and 3542 transitions. [2023-11-22 18:48:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 18:48:08,845 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 18:48:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:08,848 INFO L225 Difference]: With dead ends: 2810 [2023-11-22 18:48:08,849 INFO L226 Difference]: Without dead ends: 1482 [2023-11-22 18:48:08,850 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 18:48:08,850 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 65 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 18:48:08,850 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 18:48:08,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-11-22 18:48:08,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1482. [2023-11-22 18:48:08,869 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 18:48:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1867 transitions. [2023-11-22 18:48:08,870 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1867 transitions. Word has length 188 [2023-11-22 18:48:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:08,871 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 1867 transitions. [2023-11-22 18:48:08,871 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 18:48:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1867 transitions. [2023-11-22 18:48:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-22 18:48:08,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:08,895 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 18:48:08,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:09,108 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 18:48:09,109 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:09,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:09,109 INFO L85 PathProgramCache]: Analyzing trace with hash 505130831, now seen corresponding path program 3 times [2023-11-22 18:48:09,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:09,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955155153] [2023-11-22 18:48:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:09,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:48:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:48:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:09,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:48:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:09,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:48:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:09,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:48:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:09,574 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 18:48:09,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:09,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955155153] [2023-11-22 18:48:09,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955155153] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:09,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678245122] [2023-11-22 18:48:09,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:48:09,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:09,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:09,584 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:09,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 18:48:10,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 18:48:10,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:48:10,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-22 18:48:10,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:10,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 82 [2023-11-22 18:48:11,188 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 18:48:11,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:48:11,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678245122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:48:11,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:48:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-22 18:48:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047925724] [2023-11-22 18:48:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:48:11,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:48:11,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:11,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:48:11,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:48:11,190 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 18:48:12,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:12,840 INFO L93 Difference]: Finished difference Result 2905 states and 3665 transitions. [2023-11-22 18:48:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:48:12,840 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 18:48:12,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:12,844 INFO L225 Difference]: With dead ends: 2905 [2023-11-22 18:48:12,844 INFO L226 Difference]: Without dead ends: 1660 [2023-11-22 18:48:12,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-22 18:48:12,846 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 136 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:12,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 817 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-22 18:48:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2023-11-22 18:48:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1506. [2023-11-22 18:48:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1463 states have (on average 1.2494873547505125) internal successors, (1828), 1467 states have internal predecessors, (1828), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-22 18:48:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 1898 transitions. [2023-11-22 18:48:12,875 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 1898 transitions. Word has length 197 [2023-11-22 18:48:12,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:12,875 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 1898 transitions. [2023-11-22 18:48:12,875 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 18:48:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 1898 transitions. [2023-11-22 18:48:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-22 18:48:12,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:12,878 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, 1, 1] [2023-11-22 18:48:12,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:13,093 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 18:48:13,093 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:13,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash 96502163, now seen corresponding path program 1 times [2023-11-22 18:48:13,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:13,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027804097] [2023-11-22 18:48:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:48:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:48:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:13,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:48:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:13,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:48:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 18:48:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:13,482 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 18:48:13,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:13,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027804097] [2023-11-22 18:48:13,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027804097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:13,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083129485] [2023-11-22 18:48:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:13,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:13,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:13,484 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:13,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 18:48:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:14,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:48:14,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:14,239 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 18:48:14,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:48:14,368 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 18:48:14,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083129485] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:48:14,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:48:14,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2023-11-22 18:48:14,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702751499] [2023-11-22 18:48:14,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:48:14,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 18:48:14,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:14,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 18:48:14,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:48:14,371 INFO L87 Difference]: Start difference. First operand 1506 states and 1898 transitions. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 12 states have internal predecessors, (240), 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 18:48:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:15,961 INFO L93 Difference]: Finished difference Result 8935 states and 11252 transitions. [2023-11-22 18:48:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 18:48:15,962 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 12 states have internal predecessors, (240), 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 204 [2023-11-22 18:48:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:16,011 INFO L225 Difference]: With dead ends: 8935 [2023-11-22 18:48:16,013 INFO L226 Difference]: Without dead ends: 8929 [2023-11-22 18:48:16,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 410 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 18:48:16,018 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 363 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:16,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1288 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-22 18:48:16,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8929 states. [2023-11-22 18:48:16,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8929 to 7026. [2023-11-22 18:48:16,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7026 states, 6983 states have (on average 1.2657883431190033) internal successors, (8839), 6987 states have internal predecessors, (8839), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-22 18:48:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 8909 transitions. [2023-11-22 18:48:16,176 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 8909 transitions. Word has length 204 [2023-11-22 18:48:16,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:16,176 INFO L495 AbstractCegarLoop]: Abstraction has 7026 states and 8909 transitions. [2023-11-22 18:48:16,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 12 states have internal predecessors, (240), 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 18:48:16,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 8909 transitions. [2023-11-22 18:48:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-11-22 18:48:16,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:16,188 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, 1, 1] [2023-11-22 18:48:16,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 18:48:16,405 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 18:48:16,406 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:16,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:16,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1393645469, now seen corresponding path program 2 times [2023-11-22 18:48:16,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:16,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988856167] [2023-11-22 18:48:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:16,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:16,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:48:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:16,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:48:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:16,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:48:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:48:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:16,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 18:48:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:16,780 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 18:48:16,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:16,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988856167] [2023-11-22 18:48:16,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988856167] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:16,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738086603] [2023-11-22 18:48:16,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:48:16,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:16,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:16,783 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:16,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 18:48:17,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:48:17,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:48:17,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 18:48:17,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:17,833 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 18:48:17,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:48:17,909 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 18:48:17,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738086603] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:48:17,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:48:17,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-11-22 18:48:17,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304821867] [2023-11-22 18:48:17,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:48:17,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 18:48:17,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:48:17,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 18:48:17,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:48:17,911 INFO L87 Difference]: Start difference. First operand 7026 states and 8909 transitions. Second operand has 10 states, 10 states have (on average 19.4) internal successors, (194), 8 states have internal predecessors, (194), 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 18:48:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:48:18,867 INFO L93 Difference]: Finished difference Result 13047 states and 16542 transitions. [2023-11-22 18:48:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:48:18,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 8 states have internal predecessors, (194), 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 254 [2023-11-22 18:48:18,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:48:18,908 INFO L225 Difference]: With dead ends: 13047 [2023-11-22 18:48:18,909 INFO L226 Difference]: Without dead ends: 10306 [2023-11-22 18:48:18,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 512 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 18:48:18,915 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 271 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:48:18,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1004 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 18:48:18,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2023-11-22 18:48:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 6936. [2023-11-22 18:48:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6936 states, 6893 states have (on average 1.2562019440011607) internal successors, (8659), 6897 states have internal predecessors, (8659), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-22 18:48:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 8729 transitions. [2023-11-22 18:48:19,063 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 8729 transitions. Word has length 254 [2023-11-22 18:48:19,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:48:19,063 INFO L495 AbstractCegarLoop]: Abstraction has 6936 states and 8729 transitions. [2023-11-22 18:48:19,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 8 states have internal predecessors, (194), 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 18:48:19,064 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 8729 transitions. [2023-11-22 18:48:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-11-22 18:48:19,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:48:19,076 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, 1, 1] [2023-11-22 18:48:19,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-22 18:48:19,306 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 18:48:19,307 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:48:19,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:48:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2140461205, now seen corresponding path program 3 times [2023-11-22 18:48:19,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:48:19,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226452685] [2023-11-22 18:48:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:48:19,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:48:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:48:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:48:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:48:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:48:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 18:48:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:48:19,706 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 18:48:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:48:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226452685] [2023-11-22 18:48:19,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226452685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:48:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289698332] [2023-11-22 18:48:19,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:48:19,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:48:19,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:48:19,708 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:48:19,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 18:48:20,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 18:48:20,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:48:20,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-22 18:48:20,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:48:20,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 73 [2023-11-22 18:48:21,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:48:21,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 81 [2023-11-22 18:48:21,399 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 18:48:21,400 INFO L327 TraceCheckSpWp]: Computing backward predicates...