./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_7_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_7_safe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbfe4af9112c1518d3c4cabfb50a7350e22df936bd3147b9a0954f40d0134683 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 01:41:53,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 01:41:53,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 01:41:53,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 01:41:53,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 01:41:53,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 01:41:53,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 01:41:53,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 01:41:53,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 01:41:53,774 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 01:41:53,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 01:41:53,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 01:41:53,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 01:41:53,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 01:41:53,775 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 01:41:53,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 01:41:53,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 01:41:53,776 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 01:41:53,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 01:41:53,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 01:41:53,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 01:41:53,777 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 01:41:53,777 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 01:41:53,778 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 01:41:53,778 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 01:41:53,778 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 01:41:53,778 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 01:41:53,778 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 01:41:53,779 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 01:41:53,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 01:41:53,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 01:41:53,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 01:41:53,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:41:53,780 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 01:41:53,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 01:41:53,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 01:41:53,780 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 01:41:53,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 01:41:53,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 01:41:53,781 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 01:41:53,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 01:41:53,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 01:41:53,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbfe4af9112c1518d3c4cabfb50a7350e22df936bd3147b9a0954f40d0134683 [2024-10-14 01:41:53,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 01:41:54,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 01:41:54,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 01:41:54,023 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 01:41:54,024 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 01:41:54,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_7_safe.c-amalgamation.i [2024-10-14 01:41:55,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 01:41:55,766 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 01:41:55,768 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_7_safe.c-amalgamation.i [2024-10-14 01:41:55,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2598dac73/f8bb47b18b96424097b2dcfd97926c93/FLAG5767deeee [2024-10-14 01:41:56,033 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2598dac73/f8bb47b18b96424097b2dcfd97926c93 [2024-10-14 01:41:56,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 01:41:56,037 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 01:41:56,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 01:41:56,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 01:41:56,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 01:41:56,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:41:56" (1/1) ... [2024-10-14 01:41:56,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e4cec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:56, skipping insertion in model container [2024-10-14 01:41:56,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:41:56" (1/1) ... [2024-10-14 01:41:56,106 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 01:41:56,574 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_7_safe.c-amalgamation.i[63640,63653] [2024-10-14 01:41:56,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:41:56,748 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 01:41:56,779 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/vdp_7_safe.c-amalgamation.i[63640,63653] [2024-10-14 01:41:56,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:41:57,085 INFO L204 MainTranslator]: Completed translation [2024-10-14 01:41:57,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57 WrapperNode [2024-10-14 01:41:57,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 01:41:57,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 01:41:57,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 01:41:57,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 01:41:57,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,339 INFO L138 Inliner]: procedures = 619, calls = 1412, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1680 [2024-10-14 01:41:57,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 01:41:57,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 01:41:57,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 01:41:57,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 01:41:57,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,457 INFO L175 MemorySlicer]: Split 1388 memory accesses to 12 slices as follows [2, 7, 97, 33, 1025, 33, 97, 10, 4, 38, 36, 6]. 74 percent of accesses are in the largest equivalence class. The 1356 initializations are split as follows [2, 7, 96, 32, 1024, 32, 96, 0, 3, 32, 32, 0]. The 8 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 3, 0, 2, 2, 1]. [2024-10-14 01:41:57,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 01:41:57,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 01:41:57,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 01:41:57,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 01:41:57,576 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (1/1) ... [2024-10-14 01:41:57,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:41:57,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:41:57,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 01:41:57,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 01:41:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-14 01:41:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-14 01:41:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-14 01:41:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-14 01:41:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-14 01:41:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-14 01:41:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-14 01:41:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-14 01:41:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-14 01:41:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-14 01:41:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-14 01:41:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-14 01:41:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-14 01:41:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 01:41:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 01:41:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 01:41:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 01:41:57,825 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 01:41:57,827 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 01:41:59,447 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2024-10-14 01:41:59,448 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 01:41:59,565 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 01:41:59,566 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-14 01:41:59,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:41:59 BoogieIcfgContainer [2024-10-14 01:41:59,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 01:41:59,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 01:41:59,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 01:41:59,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 01:41:59,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:41:56" (1/3) ... [2024-10-14 01:41:59,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ac3bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:41:59, skipping insertion in model container [2024-10-14 01:41:59,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:41:57" (2/3) ... [2024-10-14 01:41:59,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ac3bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:41:59, skipping insertion in model container [2024-10-14 01:41:59,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:41:59" (3/3) ... [2024-10-14 01:41:59,578 INFO L112 eAbstractionObserver]: Analyzing ICFG vdp_7_safe.c-amalgamation.i [2024-10-14 01:41:59,591 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 01:41:59,592 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 01:41:59,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 01:41:59,659 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24eb7e49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 01:41:59,660 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 01:41:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:41:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-14 01:41:59,670 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:41:59,671 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:41:59,671 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:41:59,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:41:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2012850619, now seen corresponding path program 1 times [2024-10-14 01:41:59,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:41:59,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900476177] [2024-10-14 01:41:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:41:59,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:41:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:42:00,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:00,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900476177] [2024-10-14 01:42:00,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900476177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:42:00,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:42:00,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 01:42:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778734912] [2024-10-14 01:42:00,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:00,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 01:42:00,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:00,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 01:42:00,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:42:00,194 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.7826086956521738) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:00,301 INFO L93 Difference]: Finished difference Result 93 states and 159 transitions. [2024-10-14 01:42:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 01:42:00,304 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-14 01:42:00,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:00,310 INFO L225 Difference]: With dead ends: 93 [2024-10-14 01:42:00,311 INFO L226 Difference]: Without dead ends: 46 [2024-10-14 01:42:00,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:42:00,317 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:00,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:00,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-14 01:42:00,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-14 01:42:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2024-10-14 01:42:00,354 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 29 [2024-10-14 01:42:00,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:00,355 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2024-10-14 01:42:00,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2024-10-14 01:42:00,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-14 01:42:00,356 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:00,356 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:00,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 01:42:00,358 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:00,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:00,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2047546805, now seen corresponding path program 1 times [2024-10-14 01:42:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845710505] [2024-10-14 01:42:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:00,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:42:00,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:00,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845710505] [2024-10-14 01:42:00,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845710505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:42:00,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:42:00,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:42:00,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039725722] [2024-10-14 01:42:00,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:00,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:42:00,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:00,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:42:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:42:00,629 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:00,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:00,727 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2024-10-14 01:42:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:42:00,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-14 01:42:00,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:00,729 INFO L225 Difference]: With dead ends: 84 [2024-10-14 01:42:00,729 INFO L226 Difference]: Without dead ends: 46 [2024-10-14 01:42:00,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:42:00,730 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:00,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:00,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-14 01:42:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-14 01:42:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2024-10-14 01:42:00,736 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 29 [2024-10-14 01:42:00,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:00,737 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2024-10-14 01:42:00,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:00,737 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2024-10-14 01:42:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-14 01:42:00,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:00,738 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:00,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 01:42:00,739 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:00,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:00,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2028565773, now seen corresponding path program 1 times [2024-10-14 01:42:00,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:00,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981112697] [2024-10-14 01:42:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:00,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:42:01,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:01,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981112697] [2024-10-14 01:42:01,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981112697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:42:01,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:42:01,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 01:42:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529799325] [2024-10-14 01:42:01,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:01,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:42:01,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:01,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:42:01,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 01:42:01,016 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:01,124 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2024-10-14 01:42:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:42:01,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-14 01:42:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:01,125 INFO L225 Difference]: With dead ends: 52 [2024-10-14 01:42:01,125 INFO L226 Difference]: Without dead ends: 46 [2024-10-14 01:42:01,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 01:42:01,126 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:01,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 129 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-14 01:42:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-14 01:42:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-14 01:42:01,134 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 29 [2024-10-14 01:42:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:01,134 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-14 01:42:01,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-14 01:42:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-14 01:42:01,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:01,135 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:01,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 01:42:01,136 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:01,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:01,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2026718731, now seen corresponding path program 1 times [2024-10-14 01:42:01,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:01,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689573672] [2024-10-14 01:42:01,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:01,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:42:01,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:01,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689573672] [2024-10-14 01:42:01,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689573672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:42:01,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:42:01,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:42:01,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434889169] [2024-10-14 01:42:01,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:01,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:42:01,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:01,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:42:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:42:01,425 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:01,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:01,582 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2024-10-14 01:42:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:42:01,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-14 01:42:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:01,583 INFO L225 Difference]: With dead ends: 76 [2024-10-14 01:42:01,583 INFO L226 Difference]: Without dead ends: 49 [2024-10-14 01:42:01,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:42:01,584 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:01,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 85 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:01,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-14 01:42:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-10-14 01:42:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-14 01:42:01,591 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 29 [2024-10-14 01:42:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:01,592 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-14 01:42:01,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-14 01:42:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-14 01:42:01,592 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:01,592 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:01,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 01:42:01,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:01,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:01,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2060179138, now seen corresponding path program 1 times [2024-10-14 01:42:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:01,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742030419] [2024-10-14 01:42:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:01,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:42:01,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:01,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742030419] [2024-10-14 01:42:01,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742030419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:01,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143354552] [2024-10-14 01:42:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:01,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:01,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:01,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:01,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 01:42:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:02,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 01:42:02,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:42:02,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:42:02,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143354552] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:02,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:42:02,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:42:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214727786] [2024-10-14 01:42:02,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:02,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:42:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:02,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:42:02,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:42:02,411 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:02,526 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2024-10-14 01:42:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:42:02,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-10-14 01:42:02,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:02,527 INFO L225 Difference]: With dead ends: 65 [2024-10-14 01:42:02,527 INFO L226 Difference]: Without dead ends: 48 [2024-10-14 01:42:02,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:42:02,528 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:02,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 84 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:02,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-14 01:42:02,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-14 01:42:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-14 01:42:02,532 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 32 [2024-10-14 01:42:02,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:02,532 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-14 01:42:02,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:02,533 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-14 01:42:02,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-14 01:42:02,533 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:02,533 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:02,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 01:42:02,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:02,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:02,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1389601723, now seen corresponding path program 1 times [2024-10-14 01:42:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951780856] [2024-10-14 01:42:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:42:03,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951780856] [2024-10-14 01:42:03,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951780856] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238809100] [2024-10-14 01:42:03,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:03,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:03,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:03,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:03,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 01:42:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:03,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:42:03,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:42:03,452 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 01:42:03,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238809100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:42:03,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 01:42:03,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-14 01:42:03,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846470132] [2024-10-14 01:42:03,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:03,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:42:03,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:03,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:42:03,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 01:42:03,454 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:03,534 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-14 01:42:03,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:42:03,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-14 01:42:03,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:03,536 INFO L225 Difference]: With dead ends: 86 [2024-10-14 01:42:03,536 INFO L226 Difference]: Without dead ends: 53 [2024-10-14 01:42:03,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 01:42:03,537 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:03,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-14 01:42:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-10-14 01:42:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-14 01:42:03,541 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 35 [2024-10-14 01:42:03,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:03,541 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-14 01:42:03,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:03,541 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-14 01:42:03,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-14 01:42:03,542 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:03,542 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:03,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 01:42:03,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 01:42:03,747 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:03,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1232765958, now seen corresponding path program 1 times [2024-10-14 01:42:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:03,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521314887] [2024-10-14 01:42:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:03,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:42:03,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:03,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521314887] [2024-10-14 01:42:03,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521314887] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:03,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221141498] [2024-10-14 01:42:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:03,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:03,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:03,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:03,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 01:42:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:04,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 01:42:04,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:42:04,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:42:04,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221141498] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:04,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:42:04,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:42:04,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311107776] [2024-10-14 01:42:04,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:04,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:42:04,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:04,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:42:04,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:42:04,482 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:04,571 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2024-10-14 01:42:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:42:04,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-14 01:42:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:04,572 INFO L225 Difference]: With dead ends: 72 [2024-10-14 01:42:04,573 INFO L226 Difference]: Without dead ends: 50 [2024-10-14 01:42:04,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:42:04,574 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:04,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:04,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-14 01:42:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-14 01:42:04,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-14 01:42:04,582 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 38 [2024-10-14 01:42:04,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:04,582 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-14 01:42:04,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-14 01:42:04,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-14 01:42:04,583 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:04,583 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:04,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 01:42:04,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:04,784 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:04,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:04,785 INFO L85 PathProgramCache]: Analyzing trace with hash 112245872, now seen corresponding path program 1 times [2024-10-14 01:42:04,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:04,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336618884] [2024-10-14 01:42:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:04,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:42:05,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:05,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336618884] [2024-10-14 01:42:05,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336618884] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:05,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057710015] [2024-10-14 01:42:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:05,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:05,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:05,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:05,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 01:42:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:05,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 01:42:05,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:42:05,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:42:05,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057710015] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:05,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:42:05,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:42:05,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636310410] [2024-10-14 01:42:05,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:05,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:42:05,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:05,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:42:05,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:42:05,485 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:05,559 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2024-10-14 01:42:05,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:42:05,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-10-14 01:42:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:05,560 INFO L225 Difference]: With dead ends: 62 [2024-10-14 01:42:05,560 INFO L226 Difference]: Without dead ends: 51 [2024-10-14 01:42:05,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:42:05,560 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:05,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-14 01:42:05,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-14 01:42:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-10-14 01:42:05,564 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 41 [2024-10-14 01:42:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:05,564 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-10-14 01:42:05,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-10-14 01:42:05,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-14 01:42:05,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:05,568 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:05,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 01:42:05,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:05,769 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:05,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:05,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1541916076, now seen corresponding path program 1 times [2024-10-14 01:42:05,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:05,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585184292] [2024-10-14 01:42:05,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:05,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:42:05,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:05,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585184292] [2024-10-14 01:42:05,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585184292] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:05,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829087532] [2024-10-14 01:42:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:05,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:05,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:05,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:05,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 01:42:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:06,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 01:42:06,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:42:06,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:42:06,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829087532] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:42:06,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:42:06,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-14 01:42:06,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415485766] [2024-10-14 01:42:06,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:42:06,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 01:42:06,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:06,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 01:42:06,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:42:06,385 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:06,493 INFO L93 Difference]: Finished difference Result 90 states and 121 transitions. [2024-10-14 01:42:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 01:42:06,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-10-14 01:42:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:06,494 INFO L225 Difference]: With dead ends: 90 [2024-10-14 01:42:06,494 INFO L226 Difference]: Without dead ends: 60 [2024-10-14 01:42:06,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:42:06,495 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 15 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:06,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 130 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:06,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-14 01:42:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-14 01:42:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-14 01:42:06,499 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 44 [2024-10-14 01:42:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:06,499 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-14 01:42:06,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-14 01:42:06,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-14 01:42:06,500 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:06,500 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:06,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 01:42:06,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:06,701 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:06,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:06,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1917566771, now seen corresponding path program 2 times [2024-10-14 01:42:06,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:06,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140147961] [2024-10-14 01:42:06,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:06,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:42:06,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:07,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140147961] [2024-10-14 01:42:07,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140147961] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:07,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018480008] [2024-10-14 01:42:07,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:42:07,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:07,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:07,005 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:07,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 01:42:07,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:42:07,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:42:07,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:42:07,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 01:42:07,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-14 01:42:07,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018480008] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:42:07,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:42:07,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-14 01:42:07,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812336576] [2024-10-14 01:42:07,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:42:07,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 01:42:07,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:07,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 01:42:07,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:42:07,444 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:07,640 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2024-10-14 01:42:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 01:42:07,640 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-14 01:42:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:07,641 INFO L225 Difference]: With dead ends: 104 [2024-10-14 01:42:07,641 INFO L226 Difference]: Without dead ends: 74 [2024-10-14 01:42:07,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:42:07,642 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:07,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 345 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:42:07,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-14 01:42:07,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-10-14 01:42:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-10-14 01:42:07,646 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 53 [2024-10-14 01:42:07,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:07,647 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-10-14 01:42:07,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-10-14 01:42:07,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-14 01:42:07,648 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:07,648 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:07,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 01:42:07,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:07,849 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:07,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:07,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1485773431, now seen corresponding path program 3 times [2024-10-14 01:42:07,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:07,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046839395] [2024-10-14 01:42:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:07,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-14 01:42:08,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:08,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046839395] [2024-10-14 01:42:08,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046839395] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:08,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020604786] [2024-10-14 01:42:08,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:42:08,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:08,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:08,194 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:08,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 01:42:08,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 01:42:08,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:42:08,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 01:42:08,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:08,752 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-14 01:42:08,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-14 01:42:08,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020604786] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:08,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:42:08,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 14 [2024-10-14 01:42:08,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899513063] [2024-10-14 01:42:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:08,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:42:08,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:08,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:42:08,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-14 01:42:08,783 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:08,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:08,868 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2024-10-14 01:42:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:42:08,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-14 01:42:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:08,869 INFO L225 Difference]: With dead ends: 89 [2024-10-14 01:42:08,869 INFO L226 Difference]: Without dead ends: 73 [2024-10-14 01:42:08,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-14 01:42:08,869 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:08,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:08,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-14 01:42:08,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-14 01:42:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-10-14 01:42:08,873 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 65 [2024-10-14 01:42:08,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:08,874 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-10-14 01:42:08,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:08,874 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-10-14 01:42:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-14 01:42:08,874 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:08,874 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:08,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 01:42:09,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:09,079 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:09,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1609775226, now seen corresponding path program 1 times [2024-10-14 01:42:09,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:09,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402704639] [2024-10-14 01:42:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:09,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-14 01:42:09,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402704639] [2024-10-14 01:42:09,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402704639] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345579991] [2024-10-14 01:42:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:09,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:09,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:09,463 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:09,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 01:42:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:09,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 01:42:09,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:42:09,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-14 01:42:10,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345579991] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:42:10,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:42:10,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-14 01:42:10,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028560802] [2024-10-14 01:42:10,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:42:10,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 01:42:10,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:10,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 01:42:10,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-14 01:42:10,055 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:10,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:10,452 INFO L93 Difference]: Finished difference Result 136 states and 186 transitions. [2024-10-14 01:42:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 01:42:10,453 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-14 01:42:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:10,454 INFO L225 Difference]: With dead ends: 136 [2024-10-14 01:42:10,455 INFO L226 Difference]: Without dead ends: 96 [2024-10-14 01:42:10,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-10-14 01:42:10,456 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 53 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:10,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 395 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:42:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-14 01:42:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2024-10-14 01:42:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 93 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2024-10-14 01:42:10,474 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 68 [2024-10-14 01:42:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:10,475 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2024-10-14 01:42:10,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:10,475 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2024-10-14 01:42:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-14 01:42:10,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:10,476 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:10,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 01:42:10,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-14 01:42:10,677 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:10,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:10,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1069416577, now seen corresponding path program 2 times [2024-10-14 01:42:10,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:10,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779198513] [2024-10-14 01:42:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:10,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-10-14 01:42:11,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779198513] [2024-10-14 01:42:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779198513] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873932812] [2024-10-14 01:42:11,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:42:11,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:11,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:11,212 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:11,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 01:42:11,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:42:11,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:42:11,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 01:42:11,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-10-14 01:42:11,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-14 01:42:11,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873932812] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:42:11,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:42:11,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2024-10-14 01:42:11,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533100953] [2024-10-14 01:42:11,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:42:11,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 01:42:11,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:11,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 01:42:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-14 01:42:11,992 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 24 states, 24 states have (on average 4.333333333333333) internal successors, (104), 24 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:12,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:12,639 INFO L93 Difference]: Finished difference Result 176 states and 240 transitions. [2024-10-14 01:42:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 01:42:12,639 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.333333333333333) internal successors, (104), 24 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-10-14 01:42:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:12,641 INFO L225 Difference]: With dead ends: 176 [2024-10-14 01:42:12,641 INFO L226 Difference]: Without dead ends: 118 [2024-10-14 01:42:12,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2024-10-14 01:42:12,642 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 63 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:12,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 789 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:42:12,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-10-14 01:42:12,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-10-14 01:42:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.3333333333333333) internal successors, (156), 117 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 156 transitions. [2024-10-14 01:42:12,651 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 156 transitions. Word has length 89 [2024-10-14 01:42:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:12,651 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 156 transitions. [2024-10-14 01:42:12,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.333333333333333) internal successors, (104), 24 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 156 transitions. [2024-10-14 01:42:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-14 01:42:12,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:12,654 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:12,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 01:42:12,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 01:42:12,859 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:12,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1295709697, now seen corresponding path program 3 times [2024-10-14 01:42:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:12,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793557789] [2024-10-14 01:42:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:12,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-10-14 01:42:13,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:13,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793557789] [2024-10-14 01:42:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793557789] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:13,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058732270] [2024-10-14 01:42:13,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:42:13,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:13,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:13,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:13,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 01:42:14,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 01:42:14,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:42:14,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:42:14,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-14 01:42:14,177 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 01:42:14,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058732270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:42:14,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 01:42:14,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2024-10-14 01:42:14,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308115809] [2024-10-14 01:42:14,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:14,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:42:14,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:14,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:42:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-14 01:42:14,179 INFO L87 Difference]: Start difference. First operand 118 states and 156 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:14,255 INFO L93 Difference]: Finished difference Result 228 states and 304 transitions. [2024-10-14 01:42:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:42:14,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-10-14 01:42:14,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:14,256 INFO L225 Difference]: With dead ends: 228 [2024-10-14 01:42:14,256 INFO L226 Difference]: Without dead ends: 121 [2024-10-14 01:42:14,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-14 01:42:14,257 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:14,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 123 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:14,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-14 01:42:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2024-10-14 01:42:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3305084745762712) internal successors, (157), 118 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2024-10-14 01:42:14,261 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 113 [2024-10-14 01:42:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:14,262 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2024-10-14 01:42:14,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2024-10-14 01:42:14,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-14 01:42:14,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:14,263 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:14,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 01:42:14,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 01:42:14,464 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:14,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:14,464 INFO L85 PathProgramCache]: Analyzing trace with hash -806561953, now seen corresponding path program 1 times [2024-10-14 01:42:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:14,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140236624] [2024-10-14 01:42:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:14,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-10-14 01:42:15,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:15,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140236624] [2024-10-14 01:42:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140236624] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:15,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100648473] [2024-10-14 01:42:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:15,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:15,472 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:15,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 01:42:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:16,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 2210 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:42:16,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-10-14 01:42:16,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-10-14 01:42:16,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100648473] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:16,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:42:16,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2024-10-14 01:42:16,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262222177] [2024-10-14 01:42:16,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:16,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:42:16,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:16,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:42:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:42:16,280 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:16,364 INFO L93 Difference]: Finished difference Result 176 states and 233 transitions. [2024-10-14 01:42:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:42:16,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-10-14 01:42:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:16,365 INFO L225 Difference]: With dead ends: 176 [2024-10-14 01:42:16,365 INFO L226 Difference]: Without dead ends: 120 [2024-10-14 01:42:16,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:42:16,368 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:16,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-10-14 01:42:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-10-14 01:42:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 119 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 158 transitions. [2024-10-14 01:42:16,381 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 158 transitions. Word has length 116 [2024-10-14 01:42:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:16,384 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 158 transitions. [2024-10-14 01:42:16,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 158 transitions. [2024-10-14 01:42:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-14 01:42:16,385 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:16,385 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:16,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 01:42:16,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 01:42:16,586 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:16,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:16,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1657320234, now seen corresponding path program 1 times [2024-10-14 01:42:16,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:16,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126208672] [2024-10-14 01:42:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:16,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-14 01:42:17,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:17,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126208672] [2024-10-14 01:42:17,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126208672] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:17,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597760771] [2024-10-14 01:42:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:17,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:17,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:17,580 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:17,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 01:42:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:18,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:42:18,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-10-14 01:42:18,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-10-14 01:42:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597760771] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:18,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:42:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2024-10-14 01:42:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398579394] [2024-10-14 01:42:18,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:18,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:42:18,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:18,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:42:18,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:42:18,214 INFO L87 Difference]: Start difference. First operand 120 states and 158 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:18,284 INFO L93 Difference]: Finished difference Result 178 states and 235 transitions. [2024-10-14 01:42:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:42:18,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-10-14 01:42:18,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:18,285 INFO L225 Difference]: With dead ends: 178 [2024-10-14 01:42:18,285 INFO L226 Difference]: Without dead ends: 121 [2024-10-14 01:42:18,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:42:18,286 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:18,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 87 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:18,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-14 01:42:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-10-14 01:42:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.325) internal successors, (159), 120 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2024-10-14 01:42:18,291 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 119 [2024-10-14 01:42:18,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:18,291 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2024-10-14 01:42:18,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2024-10-14 01:42:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-14 01:42:18,292 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:18,292 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:18,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-14 01:42:18,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 01:42:18,497 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:18,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash 313219713, now seen corresponding path program 1 times [2024-10-14 01:42:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:18,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828755774] [2024-10-14 01:42:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:18,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-10-14 01:42:19,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:19,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828755774] [2024-10-14 01:42:19,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828755774] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:19,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393731991] [2024-10-14 01:42:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:19,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:19,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:19,373 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:19,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 01:42:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:19,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 2227 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:42:19,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-14 01:42:19,953 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 01:42:19,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393731991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:42:19,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 01:42:19,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2024-10-14 01:42:19,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446130688] [2024-10-14 01:42:19,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:19,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:42:19,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:19,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:42:19,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-14 01:42:19,955 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:20,018 INFO L93 Difference]: Finished difference Result 232 states and 307 transitions. [2024-10-14 01:42:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:42:20,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-10-14 01:42:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:20,019 INFO L225 Difference]: With dead ends: 232 [2024-10-14 01:42:20,020 INFO L226 Difference]: Without dead ends: 122 [2024-10-14 01:42:20,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-14 01:42:20,020 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:20,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-14 01:42:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-10-14 01:42:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.322314049586777) internal successors, (160), 121 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 160 transitions. [2024-10-14 01:42:20,025 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 160 transitions. Word has length 120 [2024-10-14 01:42:20,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:20,025 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 160 transitions. [2024-10-14 01:42:20,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:20,025 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 160 transitions. [2024-10-14 01:42:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-14 01:42:20,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:20,026 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:20,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-14 01:42:20,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 01:42:20,227 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:20,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:20,227 INFO L85 PathProgramCache]: Analyzing trace with hash 675120251, now seen corresponding path program 1 times [2024-10-14 01:42:20,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:20,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527346276] [2024-10-14 01:42:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:20,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-14 01:42:21,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:21,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527346276] [2024-10-14 01:42:21,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527346276] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:21,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105037556] [2024-10-14 01:42:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:21,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:21,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:21,105 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:21,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 01:42:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:21,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:42:21,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-10-14 01:42:21,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-10-14 01:42:21,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105037556] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:21,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:42:21,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2024-10-14 01:42:21,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502538491] [2024-10-14 01:42:21,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:42:21,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:42:21,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:21,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:42:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:42:21,735 INFO L87 Difference]: Start difference. First operand 122 states and 160 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:21,811 INFO L93 Difference]: Finished difference Result 140 states and 183 transitions. [2024-10-14 01:42:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:42:21,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-10-14 01:42:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:21,812 INFO L225 Difference]: With dead ends: 140 [2024-10-14 01:42:21,812 INFO L226 Difference]: Without dead ends: 123 [2024-10-14 01:42:21,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:42:21,813 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:21,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:42:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-14 01:42:21,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-10-14 01:42:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.319672131147541) internal successors, (161), 122 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2024-10-14 01:42:21,817 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 121 [2024-10-14 01:42:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:21,817 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2024-10-14 01:42:21,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2024-10-14 01:42:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-14 01:42:21,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:21,818 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:21,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 01:42:22,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:22,023 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:22,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:22,023 INFO L85 PathProgramCache]: Analyzing trace with hash 161031331, now seen corresponding path program 1 times [2024-10-14 01:42:22,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:22,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662109665] [2024-10-14 01:42:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:22,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-10-14 01:42:22,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:22,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662109665] [2024-10-14 01:42:22,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662109665] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:22,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265442089] [2024-10-14 01:42:22,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:22,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:22,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:22,739 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:22,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 01:42:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:23,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 2233 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-14 01:42:23,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 01:42:23,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-10-14 01:42:23,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265442089] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:42:23,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:42:23,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 13] total 39 [2024-10-14 01:42:23,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037928347] [2024-10-14 01:42:23,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:42:24,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-14 01:42:24,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:24,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-14 01:42:24,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2024-10-14 01:42:24,001 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:27,195 INFO L93 Difference]: Finished difference Result 225 states and 308 transitions. [2024-10-14 01:42:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-14 01:42:27,196 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2024-10-14 01:42:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:27,197 INFO L225 Difference]: With dead ends: 225 [2024-10-14 01:42:27,197 INFO L226 Difference]: Without dead ends: 164 [2024-10-14 01:42:27,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=450, Invalid=1902, Unknown=0, NotChecked=0, Total=2352 [2024-10-14 01:42:27,198 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 191 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:27,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1337 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-14 01:42:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-10-14 01:42:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2024-10-14 01:42:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 161 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 213 transitions. [2024-10-14 01:42:27,203 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 213 transitions. Word has length 122 [2024-10-14 01:42:27,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:27,203 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 213 transitions. [2024-10-14 01:42:27,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.461538461538462) internal successors, (174), 39 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:27,203 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 213 transitions. [2024-10-14 01:42:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-14 01:42:27,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:27,204 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:27,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-14 01:42:27,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:27,408 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:27,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:27,409 INFO L85 PathProgramCache]: Analyzing trace with hash -718265104, now seen corresponding path program 2 times [2024-10-14 01:42:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:27,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458902997] [2024-10-14 01:42:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:27,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2024-10-14 01:42:28,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:28,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458902997] [2024-10-14 01:42:28,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458902997] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:28,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067005770] [2024-10-14 01:42:28,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:42:28,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:28,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:28,350 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:28,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 01:42:28,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:42:28,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:42:29,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 2467 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-14 01:42:29,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2024-10-14 01:42:29,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 322 proven. 660 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-14 01:42:30,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067005770] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:42:30,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:42:30,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 34] total 51 [2024-10-14 01:42:30,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918139549] [2024-10-14 01:42:30,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:42:30,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-14 01:42:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:30,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-14 01:42:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2024-10-14 01:42:30,167 INFO L87 Difference]: Start difference. First operand 162 states and 213 transitions. Second operand has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:44,231 INFO L93 Difference]: Finished difference Result 310 states and 425 transitions. [2024-10-14 01:42:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-14 01:42:44,231 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-10-14 01:42:44,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:44,232 INFO L225 Difference]: With dead ends: 310 [2024-10-14 01:42:44,232 INFO L226 Difference]: Without dead ends: 213 [2024-10-14 01:42:44,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2024-10-14 01:42:44,234 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 308 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:44,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1850 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-14 01:42:44,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-10-14 01:42:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-10-14 01:42:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.3254716981132075) internal successors, (281), 212 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 281 transitions. [2024-10-14 01:42:44,240 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 281 transitions. Word has length 161 [2024-10-14 01:42:44,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:44,241 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 281 transitions. [2024-10-14 01:42:44,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.803921568627451) internal successors, (194), 51 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 281 transitions. [2024-10-14 01:42:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-14 01:42:44,242 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:44,242 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:44,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-14 01:42:44,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:44,447 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:44,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash 208436291, now seen corresponding path program 3 times [2024-10-14 01:42:44,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:44,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420099635] [2024-10-14 01:42:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:44,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-10-14 01:42:45,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:45,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420099635] [2024-10-14 01:42:45,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420099635] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:45,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165909572] [2024-10-14 01:42:45,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:42:45,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:45,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:45,841 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:45,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-14 01:42:46,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 01:42:46,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:42:46,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 01:42:46,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2242 trivial. 0 not checked. [2024-10-14 01:42:46,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2242 trivial. 0 not checked. [2024-10-14 01:42:46,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165909572] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:42:46,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:42:46,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 31 [2024-10-14 01:42:46,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530722041] [2024-10-14 01:42:46,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:42:46,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-14 01:42:46,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:46,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-14 01:42:46,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2024-10-14 01:42:46,824 INFO L87 Difference]: Start difference. First operand 213 states and 281 transitions. Second operand has 31 states, 31 states have (on average 4.451612903225806) internal successors, (138), 31 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:47,692 INFO L93 Difference]: Finished difference Result 246 states and 325 transitions. [2024-10-14 01:42:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-14 01:42:47,692 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.451612903225806) internal successors, (138), 31 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2024-10-14 01:42:47,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:47,718 INFO L225 Difference]: With dead ends: 246 [2024-10-14 01:42:47,718 INFO L226 Difference]: Without dead ends: 226 [2024-10-14 01:42:47,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2024-10-14 01:42:47,719 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 63 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:47,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1236 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 01:42:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-14 01:42:47,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2024-10-14 01:42:47,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.3228699551569507) internal successors, (295), 223 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 295 transitions. [2024-10-14 01:42:47,727 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 295 transitions. Word has length 212 [2024-10-14 01:42:47,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:47,727 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 295 transitions. [2024-10-14 01:42:47,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.451612903225806) internal successors, (138), 31 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 295 transitions. [2024-10-14 01:42:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-10-14 01:42:47,729 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:47,729 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 23, 23, 23, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:47,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-14 01:42:47,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:47,930 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:47,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:47,930 INFO L85 PathProgramCache]: Analyzing trace with hash -243927636, now seen corresponding path program 4 times [2024-10-14 01:42:47,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:47,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97857141] [2024-10-14 01:42:47,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:47,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2333 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2024-10-14 01:42:49,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:49,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97857141] [2024-10-14 01:42:49,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97857141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:49,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174684408] [2024-10-14 01:42:49,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 01:42:49,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:49,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:49,541 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:49,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-14 01:42:50,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 01:42:50,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:42:50,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-10-14 01:42:50,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:42:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2333 backedges. 0 proven. 2194 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-14 01:42:51,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:42:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2333 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2024-10-14 01:42:52,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174684408] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:42:52,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:42:52,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 50, 26] total 75 [2024-10-14 01:42:52,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539543760] [2024-10-14 01:42:52,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:42:52,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-10-14 01:42:52,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:42:52,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-10-14 01:42:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=4914, Unknown=0, NotChecked=0, Total=5550 [2024-10-14 01:42:52,437 INFO L87 Difference]: Start difference. First operand 224 states and 295 transitions. Second operand has 75 states, 75 states have (on average 3.546666666666667) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:55,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:42:55,850 INFO L93 Difference]: Finished difference Result 279 states and 374 transitions. [2024-10-14 01:42:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-14 01:42:55,853 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.546666666666667) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2024-10-14 01:42:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:42:55,854 INFO L225 Difference]: With dead ends: 279 [2024-10-14 01:42:55,854 INFO L226 Difference]: Without dead ends: 251 [2024-10-14 01:42:55,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=881, Invalid=5761, Unknown=0, NotChecked=0, Total=6642 [2024-10-14 01:42:55,856 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 314 mSDsluCounter, 3990 mSDsCounter, 0 mSdLazyCounter, 7418 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 4077 SdHoareTripleChecker+Invalid, 7419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-14 01:42:55,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 4077 Invalid, 7419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7418 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-14 01:42:55,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-14 01:42:55,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-10-14 01:42:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.324) internal successors, (331), 250 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 331 transitions. [2024-10-14 01:42:55,876 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 331 transitions. Word has length 223 [2024-10-14 01:42:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:42:55,877 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 331 transitions. [2024-10-14 01:42:55,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.546666666666667) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:42:55,880 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 331 transitions. [2024-10-14 01:42:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-10-14 01:42:55,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:42:55,882 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:42:55,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-14 01:42:56,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:56,086 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:42:56,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:42:56,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1663104485, now seen corresponding path program 5 times [2024-10-14 01:42:56,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:42:56,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142602885] [2024-10-14 01:42:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:42:56,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:42:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:42:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3071 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-10-14 01:42:56,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:42:56,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142602885] [2024-10-14 01:42:56,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142602885] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:42:56,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248387333] [2024-10-14 01:42:56,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 01:42:56,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:42:56,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:42:56,881 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:42:56,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process