./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ --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 65de5b720550425739629c673edc29b7a854e52f56e69a2e107d2cca3ffb2713 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:29:49,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:29:49,801 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:29:49,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:29:49,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:29:49,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:29:49,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:29:49,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:29:49,836 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:29:49,836 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:29:49,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:29:49,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:29:49,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:29:49,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:29:49,840 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:29:49,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:29:49,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:29:49,843 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:29:49,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:29:49,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:29:49,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:29:49,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:29:49,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:29:49,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:29:49,847 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:29:49,848 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:29:49,848 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:29:49,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:29:49,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:29:49,850 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:29:49,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:29:49,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:29:49,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:29:49,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:29:49,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:29:49,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:29:49,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:29:49,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:29:49,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:29:49,855 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:29:49,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:29:49,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:29:49,856 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65de5b720550425739629c673edc29b7a854e52f56e69a2e107d2cca3ffb2713 [2023-11-23 22:29:50,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:29:50,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:29:50,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:29:50,253 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:29:50,253 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:29:50,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/eca-rers2012/Problem12_label01.c [2023-11-23 22:29:53,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:29:53,883 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:29:53,884 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/sv-benchmarks/c/eca-rers2012/Problem12_label01.c [2023-11-23 22:29:53,916 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/data/56d00aae3/8090652cacd7447e878c052d287979cd/FLAG4b9fc02bf [2023-11-23 22:29:53,931 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/data/56d00aae3/8090652cacd7447e878c052d287979cd [2023-11-23 22:29:53,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:29:53,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:29:53,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:29:53,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:29:53,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:29:53,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:29:53" (1/1) ... [2023-11-23 22:29:53,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7edf184a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:53, skipping insertion in model container [2023-11-23 22:29:53,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:29:53" (1/1) ... [2023-11-23 22:29:54,128 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:29:54,372 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/sv-benchmarks/c/eca-rers2012/Problem12_label01.c[5916,5929] [2023-11-23 22:29:55,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:29:55,637 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:29:55,671 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/sv-benchmarks/c/eca-rers2012/Problem12_label01.c[5916,5929] [2023-11-23 22:29:56,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:29:56,284 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:29:56,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56 WrapperNode [2023-11-23 22:29:56,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:29:56,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:29:56,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:29:56,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:29:56,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:56,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:56,686 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4758 [2023-11-23 22:29:56,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:29:56,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:29:56,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:29:56,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:29:56,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:56,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:56,858 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:57,052 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:29:57,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:57,053 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:57,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:57,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:57,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:57,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:57,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:29:57,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:29:57,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:29:57,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:29:57,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (1/1) ... [2023-11-23 22:29:57,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:29:57,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:57,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:29:57,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71bc40e5-3563-46ae-9372-385547012360/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:29:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:29:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:29:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:29:57,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:29:57,655 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:29:57,657 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:30:02,747 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:30:02,830 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:30:02,832 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:30:02,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:30:02 BoogieIcfgContainer [2023-11-23 22:30:02,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:30:02,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:30:02,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:30:02,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:30:02,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:29:53" (1/3) ... [2023-11-23 22:30:02,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3015a82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:30:02, skipping insertion in model container [2023-11-23 22:30:02,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:56" (2/3) ... [2023-11-23 22:30:02,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3015a82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:30:02, skipping insertion in model container [2023-11-23 22:30:02,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:30:02" (3/3) ... [2023-11-23 22:30:02,847 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label01.c [2023-11-23 22:30:02,867 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:30:02,867 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:30:02,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:30:02,968 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25eba10b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:30:02,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:30:02,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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) [2023-11-23 22:30:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 22:30:02,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:02,989 INFO L195 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, 1, 1] [2023-11-23 22:30:02,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:30:02,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:02,998 INFO L85 PathProgramCache]: Analyzing trace with hash -299451718, now seen corresponding path program 1 times [2023-11-23 22:30:03,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:03,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103293312] [2023-11-23 22:30:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:03,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:03,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:03,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103293312] [2023-11-23 22:30:03,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103293312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:03,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:03,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289494165] [2023-11-23 22:30:03,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:03,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:30:03,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:03,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:30:03,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:30:03,248 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2023-11-23 22:30:03,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:03,388 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-11-23 22:30:03,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:30:03,393 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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 46 [2023-11-23 22:30:03,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:03,415 INFO L225 Difference]: With dead ends: 1511 [2023-11-23 22:30:03,416 INFO L226 Difference]: Without dead ends: 754 [2023-11-23 22:30:03,423 INFO L412 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 [2023-11-23 22:30:03,427 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:03,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:30:03,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-23 22:30:03,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-11-23 22:30:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 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) [2023-11-23 22:30:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-11-23 22:30:03,523 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 46 [2023-11-23 22:30:03,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:03,524 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-11-23 22:30:03,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2023-11-23 22:30:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-11-23 22:30:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 22:30:03,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:03,526 INFO L195 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, 1, 1] [2023-11-23 22:30:03,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:30:03,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:30:03,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:03,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1658568174, now seen corresponding path program 1 times [2023-11-23 22:30:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:03,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024602258] [2023-11-23 22:30:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:03,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:03,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:03,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024602258] [2023-11-23 22:30:03,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024602258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:03,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:03,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:03,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252426108] [2023-11-23 22:30:03,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:03,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:03,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:03,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:03,787 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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) [2023-11-23 22:30:08,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:08,217 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-11-23 22:30:08,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:08,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 46 [2023-11-23 22:30:08,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:08,234 INFO L225 Difference]: With dead ends: 2258 [2023-11-23 22:30:08,234 INFO L226 Difference]: Without dead ends: 1505 [2023-11-23 22:30:08,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:08,243 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 771 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:08,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 426 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-23 22:30:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-11-23 22:30:08,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-11-23 22:30:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6389627659574468) internal successors, (2465), 1504 states have internal predecessors, (2465), 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) [2023-11-23 22:30:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2465 transitions. [2023-11-23 22:30:08,331 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2465 transitions. Word has length 46 [2023-11-23 22:30:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:08,332 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2465 transitions. [2023-11-23 22:30:08,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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) [2023-11-23 22:30:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2465 transitions. [2023-11-23 22:30:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 22:30:08,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:08,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:08,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:30:08,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:30:08,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:08,359 INFO L85 PathProgramCache]: Analyzing trace with hash 187585666, now seen corresponding path program 1 times [2023-11-23 22:30:08,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:08,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575997562] [2023-11-23 22:30:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:08,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:09,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:09,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575997562] [2023-11-23 22:30:09,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575997562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:09,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:09,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:09,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057453885] [2023-11-23 22:30:09,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:09,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:09,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:09,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:09,121 INFO L87 Difference]: Start difference. First operand 1505 states and 2465 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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) [2023-11-23 22:30:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:14,408 INFO L93 Difference]: Finished difference Result 4550 states and 7430 transitions. [2023-11-23 22:30:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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 117 [2023-11-23 22:30:14,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:14,428 INFO L225 Difference]: With dead ends: 4550 [2023-11-23 22:30:14,428 INFO L226 Difference]: Without dead ends: 3009 [2023-11-23 22:30:14,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:14,433 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 705 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3077 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:14,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 651 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3077 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-23 22:30:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2023-11-23 22:30:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 3007. [2023-11-23 22:30:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.3419827012641383) internal successors, (4034), 3006 states have internal predecessors, (4034), 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) [2023-11-23 22:30:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4034 transitions. [2023-11-23 22:30:14,511 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4034 transitions. Word has length 117 [2023-11-23 22:30:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:14,512 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4034 transitions. [2023-11-23 22:30:14,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 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) [2023-11-23 22:30:14,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4034 transitions. [2023-11-23 22:30:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-23 22:30:14,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:14,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:14,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:30:14,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:30:14,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1910352063, now seen corresponding path program 1 times [2023-11-23 22:30:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:14,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614625183] [2023-11-23 22:30:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:14,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:14,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614625183] [2023-11-23 22:30:14,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614625183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:14,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:14,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:14,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428622016] [2023-11-23 22:30:14,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:14,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:14,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:14,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:14,963 INFO L87 Difference]: Start difference. First operand 3007 states and 4034 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-11-23 22:30:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:20,800 INFO L93 Difference]: Finished difference Result 9768 states and 12894 transitions. [2023-11-23 22:30:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:20,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2023-11-23 22:30:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:20,840 INFO L225 Difference]: With dead ends: 9768 [2023-11-23 22:30:20,840 INFO L226 Difference]: Without dead ends: 6762 [2023-11-23 22:30:20,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:20,846 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 2093 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4275 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 4842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:20,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 449 Invalid, 4842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4275 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-23 22:30:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2023-11-23 22:30:20,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2023-11-23 22:30:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.28782724449046) internal successors, (8707), 6761 states have internal predecessors, (8707), 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) [2023-11-23 22:30:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 8707 transitions. [2023-11-23 22:30:21,018 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 8707 transitions. Word has length 155 [2023-11-23 22:30:21,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:21,019 INFO L495 AbstractCegarLoop]: Abstraction has 6762 states and 8707 transitions. [2023-11-23 22:30:21,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-11-23 22:30:21,019 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 8707 transitions. [2023-11-23 22:30:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-23 22:30:21,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:21,025 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:21,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:30:21,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:30:21,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:21,027 INFO L85 PathProgramCache]: Analyzing trace with hash -504924125, now seen corresponding path program 1 times [2023-11-23 22:30:21,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:21,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754676521] [2023-11-23 22:30:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:21,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 22:30:21,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:21,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754676521] [2023-11-23 22:30:21,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754676521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:21,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:21,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:21,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199243558] [2023-11-23 22:30:21,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:21,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:21,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:21,615 INFO L87 Difference]: Start difference. First operand 6762 states and 8707 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 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) [2023-11-23 22:30:26,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:26,128 INFO L93 Difference]: Finished difference Result 15815 states and 21399 transitions. [2023-11-23 22:30:26,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:26,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 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 258 [2023-11-23 22:30:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:26,183 INFO L225 Difference]: With dead ends: 15815 [2023-11-23 22:30:26,183 INFO L226 Difference]: Without dead ends: 9768 [2023-11-23 22:30:26,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:26,195 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 850 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:26,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 491 Invalid, 4019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3466 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-23 22:30:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2023-11-23 22:30:26,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 9766. [2023-11-23 22:30:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.273425499231951) internal successors, (12435), 9765 states have internal predecessors, (12435), 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) [2023-11-23 22:30:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12435 transitions. [2023-11-23 22:30:26,435 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12435 transitions. Word has length 258 [2023-11-23 22:30:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:26,436 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 12435 transitions. [2023-11-23 22:30:26,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 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) [2023-11-23 22:30:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12435 transitions. [2023-11-23 22:30:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-11-23 22:30:26,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:26,442 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:26,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:30:26,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:30:26,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:26,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1943445395, now seen corresponding path program 1 times [2023-11-23 22:30:26,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:26,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730446643] [2023-11-23 22:30:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:26,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 22:30:26,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:26,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730446643] [2023-11-23 22:30:26,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730446643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:26,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:26,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:26,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801162106] [2023-11-23 22:30:26,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:26,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:26,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:26,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:26,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:26,757 INFO L87 Difference]: Start difference. First operand 9766 states and 12435 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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) [2023-11-23 22:30:30,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:30,469 INFO L93 Difference]: Finished difference Result 26290 states and 34161 transitions. [2023-11-23 22:30:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:30,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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 261 [2023-11-23 22:30:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:30,537 INFO L225 Difference]: With dead ends: 26290 [2023-11-23 22:30:30,537 INFO L226 Difference]: Without dead ends: 17276 [2023-11-23 22:30:30,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:30,553 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:30,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 596 Invalid, 2816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-23 22:30:30,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17276 states. [2023-11-23 22:30:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17276 to 17276. [2023-11-23 22:30:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17276 states, 17275 states have (on average 1.1980318379160637) internal successors, (20696), 17275 states have internal predecessors, (20696), 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) [2023-11-23 22:30:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17276 states to 17276 states and 20696 transitions. [2023-11-23 22:30:30,902 INFO L78 Accepts]: Start accepts. Automaton has 17276 states and 20696 transitions. Word has length 261 [2023-11-23 22:30:30,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:30,902 INFO L495 AbstractCegarLoop]: Abstraction has 17276 states and 20696 transitions. [2023-11-23 22:30:30,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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) [2023-11-23 22:30:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 17276 states and 20696 transitions. [2023-11-23 22:30:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-23 22:30:30,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:30,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:30,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:30:30,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:30:30,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:30,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2098943652, now seen corresponding path program 1 times [2023-11-23 22:30:30,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:30,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713961086] [2023-11-23 22:30:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:30,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 22:30:31,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:31,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713961086] [2023-11-23 22:30:31,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713961086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:31,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:31,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:31,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408750994] [2023-11-23 22:30:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:31,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:31,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:31,338 INFO L87 Difference]: Start difference. First operand 17276 states and 20696 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2023-11-23 22:30:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:35,225 INFO L93 Difference]: Finished difference Result 33800 states and 40635 transitions. [2023-11-23 22:30:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:35,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 276 [2023-11-23 22:30:35,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:35,264 INFO L225 Difference]: With dead ends: 33800 [2023-11-23 22:30:35,264 INFO L226 Difference]: Without dead ends: 17276 [2023-11-23 22:30:35,283 INFO L412 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 [2023-11-23 22:30:35,284 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 696 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:35,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1238 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-23 22:30:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17276 states. [2023-11-23 22:30:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17276 to 16525. [2023-11-23 22:30:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16525 states, 16524 states have (on average 1.1696320503510047) internal successors, (19327), 16524 states have internal predecessors, (19327), 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) [2023-11-23 22:30:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16525 states to 16525 states and 19327 transitions. [2023-11-23 22:30:35,659 INFO L78 Accepts]: Start accepts. Automaton has 16525 states and 19327 transitions. Word has length 276 [2023-11-23 22:30:35,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:35,660 INFO L495 AbstractCegarLoop]: Abstraction has 16525 states and 19327 transitions. [2023-11-23 22:30:35,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2023-11-23 22:30:35,661 INFO L276 IsEmpty]: Start isEmpty. Operand 16525 states and 19327 transitions. [2023-11-23 22:30:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-11-23 22:30:35,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:35,666 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:35,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:30:35,667 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:30:35,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:35,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1558425813, now seen corresponding path program 1 times [2023-11-23 22:30:35,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:35,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314166364] [2023-11-23 22:30:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:35,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 22:30:36,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:36,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314166364] [2023-11-23 22:30:36,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314166364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:36,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:36,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:36,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508127297] [2023-11-23 22:30:36,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:36,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:36,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:36,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:36,403 INFO L87 Difference]: Start difference. First operand 16525 states and 19327 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2023-11-23 22:30:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:39,982 INFO L93 Difference]: Finished difference Result 38306 states and 44491 transitions. [2023-11-23 22:30:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:39,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 277 [2023-11-23 22:30:39,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:40,027 INFO L225 Difference]: With dead ends: 38306 [2023-11-23 22:30:40,027 INFO L226 Difference]: Without dead ends: 22533 [2023-11-23 22:30:40,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:40,045 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 819 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:40,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 104 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 22:30:40,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22533 states. [2023-11-23 22:30:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22533 to 19529. [2023-11-23 22:30:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19529 states, 19528 states have (on average 1.149631298648095) internal successors, (22450), 19528 states have internal predecessors, (22450), 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) [2023-11-23 22:30:40,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19529 states to 19529 states and 22450 transitions. [2023-11-23 22:30:40,333 INFO L78 Accepts]: Start accepts. Automaton has 19529 states and 22450 transitions. Word has length 277 [2023-11-23 22:30:40,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:40,334 INFO L495 AbstractCegarLoop]: Abstraction has 19529 states and 22450 transitions. [2023-11-23 22:30:40,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2023-11-23 22:30:40,334 INFO L276 IsEmpty]: Start isEmpty. Operand 19529 states and 22450 transitions. [2023-11-23 22:30:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-11-23 22:30:40,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:40,343 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:40,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:30:40,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:30:40,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:40,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2091504467, now seen corresponding path program 1 times [2023-11-23 22:30:40,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:40,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734690230] [2023-11-23 22:30:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:40,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat