./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme --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 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:42:02,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:02,645 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:42:02,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:02,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:02,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:02,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:02,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:02,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:02,694 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:02,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:02,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:02,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:02,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:02,698 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:02,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:02,699 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:42:02,699 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:42:02,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:02,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:42:02,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:02,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:42:02,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:02,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:42:02,703 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:42:02,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:42:02,703 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:02,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:02,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:02,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:02,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:02,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:02,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:02,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:02,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:42:02,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:42:02,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:42:02,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:02,709 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:02,709 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:42:02,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:02,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:02,710 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_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 [2023-11-26 10:42:03,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:03,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:03,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:03,031 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:03,031 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:03,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-11-26 10:42:06,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:06,583 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:06,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-11-26 10:42:06,609 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/data/b604dcbc5/8f27e18df8d94cebb278edb4a5c5b9a4/FLAG01ef0666d [2023-11-26 10:42:06,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/data/b604dcbc5/8f27e18df8d94cebb278edb4a5c5b9a4 [2023-11-26 10:42:06,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:06,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:06,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:06,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:06,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:06,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:06" (1/1) ... [2023-11-26 10:42:06,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ee502c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:06, skipping insertion in model container [2023-11-26 10:42:06,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:06" (1/1) ... [2023-11-26 10:42:06,687 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:06,932 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_1186375b-61e4-49d7-be7a-449b08def574/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2023-11-26 10:42:06,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:06,955 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:07,069 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_1186375b-61e4-49d7-be7a-449b08def574/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2023-11-26 10:42:07,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:07,096 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:07,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07 WrapperNode [2023-11-26 10:42:07,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:07,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:07,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:07,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:07,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,167 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 497 [2023-11-26 10:42:07,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:07,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:07,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:07,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:07,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,203 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:42:07,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,204 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:07,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:07,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:07,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:07,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (1/1) ... [2023-11-26 10:42:07,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:07,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:07,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:07,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-11-26 10:42:07,342 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-11-26 10:42:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:42:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-11-26 10:42:07,343 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-11-26 10:42:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-26 10:42:07,344 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-26 10:42:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2023-11-26 10:42:07,346 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2023-11-26 10:42:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:42:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:42:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:42:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-11-26 10:42:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-11-26 10:42:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:07,347 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-11-26 10:42:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-11-26 10:42:07,508 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:07,510 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:08,181 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:08,264 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:08,264 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:42:08,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:08 BoogieIcfgContainer [2023-11-26 10:42:08,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:08,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:42:08,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:42:08,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:42:08,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:06" (1/3) ... [2023-11-26 10:42:08,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d43fe05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:08, skipping insertion in model container [2023-11-26 10:42:08,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07" (2/3) ... [2023-11-26 10:42:08,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d43fe05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:08, skipping insertion in model container [2023-11-26 10:42:08,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:08" (3/3) ... [2023-11-26 10:42:08,281 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-11-26 10:42:08,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:42:08,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:42:08,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:42:08,359 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;@1025cdee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:42:08,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:42:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 130 states have (on average 1.6) internal successors, (208), 132 states have internal predecessors, (208), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:42:08,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 10:42:08,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:08,375 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] [2023-11-26 10:42:08,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:08,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:08,381 INFO L85 PathProgramCache]: Analyzing trace with hash 975176766, now seen corresponding path program 1 times [2023-11-26 10:42:08,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:08,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617912797] [2023-11-26 10:42:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:08,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:42:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:08,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:08,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617912797] [2023-11-26 10:42:08,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617912797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:08,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:08,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:08,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711975410] [2023-11-26 10:42:08,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:08,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:42:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:42:08,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:42:08,656 INFO L87 Difference]: Start difference. First operand has 170 states, 130 states have (on average 1.6) internal successors, (208), 132 states have internal predecessors, (208), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:42:08,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:08,769 INFO L93 Difference]: Finished difference Result 323 states and 540 transitions. [2023-11-26 10:42:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:42:08,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-26 10:42:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:08,782 INFO L225 Difference]: With dead ends: 323 [2023-11-26 10:42:08,784 INFO L226 Difference]: Without dead ends: 168 [2023-11-26 10:42:08,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:42:08,803 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:08,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-26 10:42:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-11-26 10:42:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 129 states have (on average 1.573643410852713) internal successors, (203), 130 states have internal predecessors, (203), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:42:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 265 transitions. [2023-11-26 10:42:08,872 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 265 transitions. Word has length 23 [2023-11-26 10:42:08,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:08,872 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 265 transitions. [2023-11-26 10:42:08,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:42:08,873 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 265 transitions. [2023-11-26 10:42:08,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 10:42:08,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:08,875 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] [2023-11-26 10:42:08,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:42:08,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:08,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:08,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1018967940, now seen corresponding path program 1 times [2023-11-26 10:42:08,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:08,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856584047] [2023-11-26 10:42:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:08,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:42:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:09,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:09,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856584047] [2023-11-26 10:42:09,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856584047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:09,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:42:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164781779] [2023-11-26 10:42:09,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:09,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:42:09,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:42:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:42:09,149 INFO L87 Difference]: Start difference. First operand 168 states and 265 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:42:09,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:09,302 INFO L93 Difference]: Finished difference Result 323 states and 505 transitions. [2023-11-26 10:42:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:42:09,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-26 10:42:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:09,313 INFO L225 Difference]: With dead ends: 323 [2023-11-26 10:42:09,313 INFO L226 Difference]: Without dead ends: 168 [2023-11-26 10:42:09,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:42:09,316 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 131 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:09,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1108 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:09,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-26 10:42:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-11-26 10:42:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 129 states have (on average 1.4806201550387597) internal successors, (191), 130 states have internal predecessors, (191), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:42:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 253 transitions. [2023-11-26 10:42:09,369 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 253 transitions. Word has length 23 [2023-11-26 10:42:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:09,369 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 253 transitions. [2023-11-26 10:42:09,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:42:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 253 transitions. [2023-11-26 10:42:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 10:42:09,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:09,372 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] [2023-11-26 10:42:09,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:42:09,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:09,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:09,375 INFO L85 PathProgramCache]: Analyzing trace with hash 26280683, now seen corresponding path program 1 times [2023-11-26 10:42:09,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:09,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158377755] [2023-11-26 10:42:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:09,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:09,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:09,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158377755] [2023-11-26 10:42:09,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158377755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:09,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:09,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:09,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718940232] [2023-11-26 10:42:09,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:09,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:09,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:09,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:09,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:09,592 INFO L87 Difference]: Start difference. First operand 168 states and 253 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:42:09,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:09,704 INFO L93 Difference]: Finished difference Result 324 states and 497 transitions. [2023-11-26 10:42:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:09,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-11-26 10:42:09,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:09,708 INFO L225 Difference]: With dead ends: 324 [2023-11-26 10:42:09,708 INFO L226 Difference]: Without dead ends: 172 [2023-11-26 10:42:09,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:09,710 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 5 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:09,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 716 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:09,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-26 10:42:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-11-26 10:42:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 132 states have (on average 1.4696969696969697) internal successors, (194), 133 states have internal predecessors, (194), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:42:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 256 transitions. [2023-11-26 10:42:09,749 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 256 transitions. Word has length 34 [2023-11-26 10:42:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:09,750 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 256 transitions. [2023-11-26 10:42:09,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:42:09,750 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 256 transitions. [2023-11-26 10:42:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 10:42:09,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:09,752 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:09,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:42:09,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:09,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1285077620, now seen corresponding path program 1 times [2023-11-26 10:42:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:09,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054511924] [2023-11-26 10:42:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:09,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:09,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:09,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 10:42:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:09,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054511924] [2023-11-26 10:42:09,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054511924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:09,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:09,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:09,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434432312] [2023-11-26 10:42:09,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:09,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:09,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:09,911 INFO L87 Difference]: Start difference. First operand 172 states and 256 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:42:09,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:10,000 INFO L93 Difference]: Finished difference Result 473 states and 714 transitions. [2023-11-26 10:42:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:10,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2023-11-26 10:42:10,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:10,005 INFO L225 Difference]: With dead ends: 473 [2023-11-26 10:42:10,005 INFO L226 Difference]: Without dead ends: 317 [2023-11-26 10:42:10,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:10,017 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 209 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:10,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 495 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-26 10:42:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 314. [2023-11-26 10:42:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 237 states have (on average 1.4852320675105486) internal successors, (352), 239 states have internal predecessors, (352), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-26 10:42:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 472 transitions. [2023-11-26 10:42:10,072 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 472 transitions. Word has length 48 [2023-11-26 10:42:10,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:10,073 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 472 transitions. [2023-11-26 10:42:10,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:42:10,073 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 472 transitions. [2023-11-26 10:42:10,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:42:10,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:10,084 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:10,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:42:10,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:10,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:10,085 INFO L85 PathProgramCache]: Analyzing trace with hash -271052700, now seen corresponding path program 1 times [2023-11-26 10:42:10,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:10,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189938303] [2023-11-26 10:42:10,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:10,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 10:42:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:10,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:10,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189938303] [2023-11-26 10:42:10,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189938303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:10,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:10,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:10,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935215654] [2023-11-26 10:42:10,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:10,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:10,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:10,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:10,213 INFO L87 Difference]: Start difference. First operand 314 states and 472 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:42:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:10,316 INFO L93 Difference]: Finished difference Result 886 states and 1342 transitions. [2023-11-26 10:42:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:10,317 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-11-26 10:42:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:10,324 INFO L225 Difference]: With dead ends: 886 [2023-11-26 10:42:10,324 INFO L226 Difference]: Without dead ends: 588 [2023-11-26 10:42:10,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:10,326 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 210 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:10,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 515 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:10,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-11-26 10:42:10,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 582. [2023-11-26 10:42:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 433 states have (on average 1.4942263279445727) internal successors, (647), 437 states have internal predecessors, (647), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-11-26 10:42:10,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 881 transitions. [2023-11-26 10:42:10,390 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 881 transitions. Word has length 49 [2023-11-26 10:42:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:10,393 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 881 transitions. [2023-11-26 10:42:10,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:42:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 881 transitions. [2023-11-26 10:42:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:42:10,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:10,395 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:10,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:42:10,395 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:10,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:10,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1550916378, now seen corresponding path program 1 times [2023-11-26 10:42:10,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:10,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993883047] [2023-11-26 10:42:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 10:42:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:10,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:10,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993883047] [2023-11-26 10:42:10,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993883047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:10,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:10,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:42:10,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560417787] [2023-11-26 10:42:10,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:10,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:42:10,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:10,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:42:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:10,543 INFO L87 Difference]: Start difference. First operand 582 states and 881 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:42:10,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:10,761 INFO L93 Difference]: Finished difference Result 1237 states and 1874 transitions. [2023-11-26 10:42:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:42:10,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-11-26 10:42:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:10,767 INFO L225 Difference]: With dead ends: 1237 [2023-11-26 10:42:10,767 INFO L226 Difference]: Without dead ends: 671 [2023-11-26 10:42:10,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:42:10,770 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 351 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:10,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 643 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2023-11-26 10:42:10,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 663. [2023-11-26 10:42:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 501 states have (on average 1.4810379241516967) internal successors, (742), 504 states have internal predecessors, (742), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-26 10:42:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 990 transitions. [2023-11-26 10:42:10,865 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 990 transitions. Word has length 49 [2023-11-26 10:42:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:10,866 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 990 transitions. [2023-11-26 10:42:10,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:42:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 990 transitions. [2023-11-26 10:42:10,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 10:42:10,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:10,868 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:10,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:42:10,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:10,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:10,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1743107091, now seen corresponding path program 1 times [2023-11-26 10:42:10,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:10,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807948198] [2023-11-26 10:42:10,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:10,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:42:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:10,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:10,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807948198] [2023-11-26 10:42:10,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807948198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:10,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:10,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:42:10,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478226986] [2023-11-26 10:42:10,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:10,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:42:10,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:10,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:42:10,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:10,989 INFO L87 Difference]: Start difference. First operand 663 states and 990 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:42:11,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:11,201 INFO L93 Difference]: Finished difference Result 1241 states and 1874 transitions. [2023-11-26 10:42:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:42:11,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2023-11-26 10:42:11,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:11,207 INFO L225 Difference]: With dead ends: 1241 [2023-11-26 10:42:11,208 INFO L226 Difference]: Without dead ends: 675 [2023-11-26 10:42:11,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:42:11,211 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 348 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:11,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 645 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-11-26 10:42:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 671. [2023-11-26 10:42:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 509 states have (on average 1.4734774066797642) internal successors, (750), 512 states have internal predecessors, (750), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-26 10:42:11,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 998 transitions. [2023-11-26 10:42:11,285 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 998 transitions. Word has length 50 [2023-11-26 10:42:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:11,285 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 998 transitions. [2023-11-26 10:42:11,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:42:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 998 transitions. [2023-11-26 10:42:11,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 10:42:11,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:11,288 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:11,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:42:11,288 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:11,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:11,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1020972895, now seen corresponding path program 1 times [2023-11-26 10:42:11,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:11,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621399978] [2023-11-26 10:42:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:11,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:11,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 10:42:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:11,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:11,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621399978] [2023-11-26 10:42:11,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621399978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:11,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:11,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098242640] [2023-11-26 10:42:11,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:11,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:11,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:11,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:11,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:11,424 INFO L87 Difference]: Start difference. First operand 671 states and 998 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:42:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:11,626 INFO L93 Difference]: Finished difference Result 1241 states and 1866 transitions. [2023-11-26 10:42:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:11,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2023-11-26 10:42:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:11,632 INFO L225 Difference]: With dead ends: 1241 [2023-11-26 10:42:11,633 INFO L226 Difference]: Without dead ends: 675 [2023-11-26 10:42:11,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:11,635 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 61 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:11,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 638 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-11-26 10:42:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 671. [2023-11-26 10:42:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 509 states have (on average 1.4656188605108056) internal successors, (746), 512 states have internal predecessors, (746), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-26 10:42:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 994 transitions. [2023-11-26 10:42:11,711 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 994 transitions. Word has length 52 [2023-11-26 10:42:11,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:11,712 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 994 transitions. [2023-11-26 10:42:11,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:42:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 994 transitions. [2023-11-26 10:42:11,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 10:42:11,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:11,713 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:11,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:42:11,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:11,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:11,714 INFO L85 PathProgramCache]: Analyzing trace with hash 70077876, now seen corresponding path program 1 times [2023-11-26 10:42:11,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:11,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616214886] [2023-11-26 10:42:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:11,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:11,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:11,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:11,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:11,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616214886] [2023-11-26 10:42:11,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616214886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:11,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:11,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:11,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236248879] [2023-11-26 10:42:11,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:11,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:11,917 INFO L87 Difference]: Start difference. First operand 671 states and 994 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 10:42:12,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:12,057 INFO L93 Difference]: Finished difference Result 1257 states and 1886 transitions. [2023-11-26 10:42:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:12,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2023-11-26 10:42:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:12,065 INFO L225 Difference]: With dead ends: 1257 [2023-11-26 10:42:12,066 INFO L226 Difference]: Without dead ends: 691 [2023-11-26 10:42:12,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:12,071 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 6 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:12,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 728 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-11-26 10:42:12,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2023-11-26 10:42:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 525 states have (on average 1.4514285714285715) internal successors, (762), 528 states have internal predecessors, (762), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-26 10:42:12,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1010 transitions. [2023-11-26 10:42:12,157 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1010 transitions. Word has length 53 [2023-11-26 10:42:12,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:12,158 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1010 transitions. [2023-11-26 10:42:12,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 10:42:12,158 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1010 transitions. [2023-11-26 10:42:12,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 10:42:12,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:12,160 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:12,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:42:12,160 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:12,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2022849498, now seen corresponding path program 1 times [2023-11-26 10:42:12,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:12,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565042607] [2023-11-26 10:42:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:12,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:12,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:12,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565042607] [2023-11-26 10:42:12,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565042607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:12,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:12,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:12,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168759994] [2023-11-26 10:42:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:12,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:12,386 INFO L87 Difference]: Start difference. First operand 691 states and 1010 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 10:42:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:12,513 INFO L93 Difference]: Finished difference Result 1297 states and 1930 transitions. [2023-11-26 10:42:12,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:12,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2023-11-26 10:42:12,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:12,519 INFO L225 Difference]: With dead ends: 1297 [2023-11-26 10:42:12,519 INFO L226 Difference]: Without dead ends: 711 [2023-11-26 10:42:12,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:12,523 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 6 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:12,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 714 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:12,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-11-26 10:42:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2023-11-26 10:42:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 541 states have (on average 1.4380776340110906) internal successors, (778), 544 states have internal predecessors, (778), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-26 10:42:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1026 transitions. [2023-11-26 10:42:12,612 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1026 transitions. Word has length 61 [2023-11-26 10:42:12,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:12,614 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1026 transitions. [2023-11-26 10:42:12,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 10:42:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1026 transitions. [2023-11-26 10:42:12,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 10:42:12,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:12,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:42:12,619 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:12,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1319245148, now seen corresponding path program 1 times [2023-11-26 10:42:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:12,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700670466] [2023-11-26 10:42:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:12,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:12,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700670466] [2023-11-26 10:42:12,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700670466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:12,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:12,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645860357] [2023-11-26 10:42:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:12,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:12,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:12,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:12,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:12,804 INFO L87 Difference]: Start difference. First operand 711 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:42:12,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:12,917 INFO L93 Difference]: Finished difference Result 1333 states and 1946 transitions. [2023-11-26 10:42:12,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:12,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2023-11-26 10:42:12,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:12,923 INFO L225 Difference]: With dead ends: 1333 [2023-11-26 10:42:12,924 INFO L226 Difference]: Without dead ends: 727 [2023-11-26 10:42:12,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:12,927 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 5 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:12,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 723 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:12,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-11-26 10:42:12,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2023-11-26 10:42:12,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 553 states have (on average 1.4285714285714286) internal successors, (790), 556 states have internal predecessors, (790), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-26 10:42:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1038 transitions. [2023-11-26 10:42:12,999 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1038 transitions. Word has length 69 [2023-11-26 10:42:12,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:12,999 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1038 transitions. [2023-11-26 10:42:12,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:42:12,999 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1038 transitions. [2023-11-26 10:42:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 10:42:13,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:13,002 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:13,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:42:13,002 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:13,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:13,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1077214155, now seen corresponding path program 1 times [2023-11-26 10:42:13,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:13,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506039973] [2023-11-26 10:42:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:13,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:42:13,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:13,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506039973] [2023-11-26 10:42:13,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506039973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:13,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:13,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:13,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181485240] [2023-11-26 10:42:13,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:13,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:13,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:13,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:13,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:13,201 INFO L87 Difference]: Start difference. First operand 727 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:42:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:13,331 INFO L93 Difference]: Finished difference Result 1369 states and 1986 transitions. [2023-11-26 10:42:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:13,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2023-11-26 10:42:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:13,337 INFO L225 Difference]: With dead ends: 1369 [2023-11-26 10:42:13,338 INFO L226 Difference]: Without dead ends: 747 [2023-11-26 10:42:13,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:13,341 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 6 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:13,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 714 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:13,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-11-26 10:42:13,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2023-11-26 10:42:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 569 states have (on average 1.4165202108963093) internal successors, (806), 572 states have internal predecessors, (806), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-26 10:42:13,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1054 transitions. [2023-11-26 10:42:13,420 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1054 transitions. Word has length 69 [2023-11-26 10:42:13,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:13,420 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1054 transitions. [2023-11-26 10:42:13,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-26 10:42:13,421 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1054 transitions. [2023-11-26 10:42:13,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 10:42:13,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:13,423 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:13,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:42:13,424 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:13,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash 371503403, now seen corresponding path program 1 times [2023-11-26 10:42:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:13,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470385034] [2023-11-26 10:42:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:42:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 10:42:13,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:13,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470385034] [2023-11-26 10:42:13,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470385034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:13,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:13,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:13,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504281400] [2023-11-26 10:42:13,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:13,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:13,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:13,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:13,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:13,657 INFO L87 Difference]: Start difference. First operand 747 states and 1054 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-26 10:42:13,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:13,776 INFO L93 Difference]: Finished difference Result 1413 states and 2014 transitions. [2023-11-26 10:42:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:13,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2023-11-26 10:42:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:13,783 INFO L225 Difference]: With dead ends: 1413 [2023-11-26 10:42:13,783 INFO L226 Difference]: Without dead ends: 771 [2023-11-26 10:42:13,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:13,786 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 7 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:13,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 725 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2023-11-26 10:42:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2023-11-26 10:42:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 589 states have (on average 1.4023769100169778) internal successors, (826), 592 states have internal predecessors, (826), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-26 10:42:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1074 transitions. [2023-11-26 10:42:13,864 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1074 transitions. Word has length 77 [2023-11-26 10:42:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:13,864 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1074 transitions. [2023-11-26 10:42:13,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-26 10:42:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1074 transitions. [2023-11-26 10:42:13,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 10:42:13,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:13,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:13,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:42:13,868 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:13,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1261624674, now seen corresponding path program 1 times [2023-11-26 10:42:13,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:13,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418056897] [2023-11-26 10:42:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:13,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:42:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:42:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 10:42:14,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418056897] [2023-11-26 10:42:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418056897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:14,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:14,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:42:14,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619688426] [2023-11-26 10:42:14,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:14,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:42:14,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:42:14,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:42:14,181 INFO L87 Difference]: Start difference. First operand 771 states and 1074 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 10:42:14,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:14,594 INFO L93 Difference]: Finished difference Result 2143 states and 3005 transitions. [2023-11-26 10:42:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:42:14,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-11-26 10:42:14,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:14,605 INFO L225 Difference]: With dead ends: 2143 [2023-11-26 10:42:14,605 INFO L226 Difference]: Without dead ends: 1477 [2023-11-26 10:42:14,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:42:14,609 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 259 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:14,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1368 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:42:14,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2023-11-26 10:42:14,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1047. [2023-11-26 10:42:14,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 792 states have (on average 1.3888888888888888) internal successors, (1100), 797 states have internal predecessors, (1100), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2023-11-26 10:42:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1444 transitions. [2023-11-26 10:42:14,751 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1444 transitions. Word has length 80 [2023-11-26 10:42:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:14,751 INFO L495 AbstractCegarLoop]: Abstraction has 1047 states and 1444 transitions. [2023-11-26 10:42:14,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 10:42:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1444 transitions. [2023-11-26 10:42:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-26 10:42:14,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:14,754 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:14,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 10:42:14,754 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:14,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:14,755 INFO L85 PathProgramCache]: Analyzing trace with hash 203336820, now seen corresponding path program 1 times [2023-11-26 10:42:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:14,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222159971] [2023-11-26 10:42:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:14,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:42:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:42:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 10:42:14,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:14,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222159971] [2023-11-26 10:42:14,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222159971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:14,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:14,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:14,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464123447] [2023-11-26 10:42:14,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:14,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:14,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:14,979 INFO L87 Difference]: Start difference. First operand 1047 states and 1444 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 10:42:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:15,154 INFO L93 Difference]: Finished difference Result 1953 states and 2714 transitions. [2023-11-26 10:42:15,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:15,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2023-11-26 10:42:15,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:15,162 INFO L225 Difference]: With dead ends: 1953 [2023-11-26 10:42:15,162 INFO L226 Difference]: Without dead ends: 1071 [2023-11-26 10:42:15,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:15,167 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 5 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:15,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 723 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-11-26 10:42:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2023-11-26 10:42:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 810 states have (on average 1.3802469135802469) internal successors, (1118), 815 states have internal predecessors, (1118), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2023-11-26 10:42:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1462 transitions. [2023-11-26 10:42:15,296 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1462 transitions. Word has length 84 [2023-11-26 10:42:15,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:15,296 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1462 transitions. [2023-11-26 10:42:15,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 10:42:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1462 transitions. [2023-11-26 10:42:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-26 10:42:15,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:15,299 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:15,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:42:15,299 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:15,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1117244196, now seen corresponding path program 1 times [2023-11-26 10:42:15,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:15,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640562065] [2023-11-26 10:42:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:15,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:15,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:42:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:42:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 10:42:15,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640562065] [2023-11-26 10:42:15,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640562065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:15,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:15,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:42:15,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969800293] [2023-11-26 10:42:15,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:15,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:42:15,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:42:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:42:15,615 INFO L87 Difference]: Start difference. First operand 1071 states and 1462 transitions. Second operand has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 10:42:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:15,964 INFO L93 Difference]: Finished difference Result 1485 states and 2136 transitions. [2023-11-26 10:42:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:42:15,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2023-11-26 10:42:15,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:15,975 INFO L225 Difference]: With dead ends: 1485 [2023-11-26 10:42:15,975 INFO L226 Difference]: Without dead ends: 1483 [2023-11-26 10:42:15,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:42:15,977 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 311 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:15,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 2430 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-11-26 10:42:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1079. [2023-11-26 10:42:16,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 814 states have (on average 1.3783783783783783) internal successors, (1122), 821 states have internal predecessors, (1122), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2023-11-26 10:42:16,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1470 transitions. [2023-11-26 10:42:16,138 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1470 transitions. Word has length 83 [2023-11-26 10:42:16,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:16,138 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1470 transitions. [2023-11-26 10:42:16,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 10:42:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1470 transitions. [2023-11-26 10:42:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-26 10:42:16,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:16,141 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:16,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:42:16,142 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:16,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:16,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1786856787, now seen corresponding path program 1 times [2023-11-26 10:42:16,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:16,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13291264] [2023-11-26 10:42:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:16,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:42:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:42:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 10:42:16,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:16,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13291264] [2023-11-26 10:42:16,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13291264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:16,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:16,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:42:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202077748] [2023-11-26 10:42:16,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:42:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:42:16,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:42:16,341 INFO L87 Difference]: Start difference. First operand 1079 states and 1470 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 10:42:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:16,614 INFO L93 Difference]: Finished difference Result 1949 states and 2665 transitions. [2023-11-26 10:42:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:42:16,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 86 [2023-11-26 10:42:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:16,622 INFO L225 Difference]: With dead ends: 1949 [2023-11-26 10:42:16,622 INFO L226 Difference]: Without dead ends: 1117 [2023-11-26 10:42:16,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:42:16,626 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 247 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:16,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1425 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2023-11-26 10:42:16,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1071. [2023-11-26 10:42:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 817 states have (on average 1.3733170134638923) internal successors, (1122), 829 states have internal predecessors, (1122), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2023-11-26 10:42:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1446 transitions. [2023-11-26 10:42:16,754 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1446 transitions. Word has length 86 [2023-11-26 10:42:16,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:16,754 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1446 transitions. [2023-11-26 10:42:16,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 10:42:16,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1446 transitions. [2023-11-26 10:42:16,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 10:42:16,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:16,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:16,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 10:42:16,757 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:16,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash 116448996, now seen corresponding path program 1 times [2023-11-26 10:42:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:16,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010668111] [2023-11-26 10:42:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:16,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:42:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:42:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:42:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 10:42:17,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:17,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010668111] [2023-11-26 10:42:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010668111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:17,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:17,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:42:17,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271045876] [2023-11-26 10:42:17,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:17,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:42:17,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:17,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:42:17,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:42:17,104 INFO L87 Difference]: Start difference. First operand 1071 states and 1446 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 10:42:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:17,424 INFO L93 Difference]: Finished difference Result 2013 states and 2751 transitions. [2023-11-26 10:42:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:42:17,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-11-26 10:42:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:17,433 INFO L225 Difference]: With dead ends: 2013 [2023-11-26 10:42:17,433 INFO L226 Difference]: Without dead ends: 1169 [2023-11-26 10:42:17,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:42:17,436 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 197 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:17,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1588 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:17,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2023-11-26 10:42:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 964. [2023-11-26 10:42:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 737 states have (on average 1.3772048846675713) internal successors, (1015), 747 states have internal predecessors, (1015), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2023-11-26 10:42:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1305 transitions. [2023-11-26 10:42:17,581 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1305 transitions. Word has length 88 [2023-11-26 10:42:17,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:17,582 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1305 transitions. [2023-11-26 10:42:17,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 10:42:17,582 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1305 transitions. [2023-11-26 10:42:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-26 10:42:17,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:17,584 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:42:17,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 10:42:17,584 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:17,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash -741171965, now seen corresponding path program 1 times [2023-11-26 10:42:17,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:17,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943553549] [2023-11-26 10:42:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:17,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:42:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:42:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 10:42:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 10:42:17,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:17,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943553549] [2023-11-26 10:42:17,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943553549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:17,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:17,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:42:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655017967] [2023-11-26 10:42:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:17,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:42:17,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:17,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:42:17,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:42:17,926 INFO L87 Difference]: Start difference. First operand 964 states and 1305 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:42:18,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:18,702 INFO L93 Difference]: Finished difference Result 2071 states and 2845 transitions. [2023-11-26 10:42:18,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:42:18,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 89 [2023-11-26 10:42:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:18,712 INFO L225 Difference]: With dead ends: 2071 [2023-11-26 10:42:18,713 INFO L226 Difference]: Without dead ends: 1253 [2023-11-26 10:42:18,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:42:18,716 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 742 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:18,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1412 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:42:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2023-11-26 10:42:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 980. [2023-11-26 10:42:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 745 states have (on average 1.353020134228188) internal successors, (1008), 756 states have internal predecessors, (1008), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2023-11-26 10:42:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1304 transitions. [2023-11-26 10:42:18,894 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1304 transitions. Word has length 89 [2023-11-26 10:42:18,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:18,895 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1304 transitions. [2023-11-26 10:42:18,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:42:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1304 transitions. [2023-11-26 10:42:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-26 10:42:18,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:18,897 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:18,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 10:42:18,897 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:18,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:18,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1250316306, now seen corresponding path program 1 times [2023-11-26 10:42:18,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:18,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943391614] [2023-11-26 10:42:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:18,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:42:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:18,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:42:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:42:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:18,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:42:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:42:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:42:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:42:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:42:19,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:19,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943391614] [2023-11-26 10:42:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943391614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:19,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770596325] [2023-11-26 10:42:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:19,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:19,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:19,020 INFO L87 Difference]: Start difference. First operand 980 states and 1304 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:19,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:19,327 INFO L93 Difference]: Finished difference Result 2597 states and 3474 transitions. [2023-11-26 10:42:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:42:19,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2023-11-26 10:42:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:19,341 INFO L225 Difference]: With dead ends: 2597 [2023-11-26 10:42:19,341 INFO L226 Difference]: Without dead ends: 1814 [2023-11-26 10:42:19,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:19,345 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 198 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:19,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1096 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:19,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-11-26 10:42:19,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1707. [2023-11-26 10:42:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1282 states have (on average 1.3424336973478939) internal successors, (1721), 1301 states have internal predecessors, (1721), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2023-11-26 10:42:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2265 transitions. [2023-11-26 10:42:19,621 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2265 transitions. Word has length 90 [2023-11-26 10:42:19,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:19,622 INFO L495 AbstractCegarLoop]: Abstraction has 1707 states and 2265 transitions. [2023-11-26 10:42:19,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2265 transitions. [2023-11-26 10:42:19,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-26 10:42:19,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:19,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:19,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 10:42:19,625 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:19,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:19,625 INFO L85 PathProgramCache]: Analyzing trace with hash -386379641, now seen corresponding path program 1 times [2023-11-26 10:42:19,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:19,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457800881] [2023-11-26 10:42:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:19,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:42:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:42:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:42:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:42:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:42:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:42:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:42:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 10:42:19,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:19,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457800881] [2023-11-26 10:42:19,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457800881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:19,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:19,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:42:19,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627419059] [2023-11-26 10:42:19,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:19,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:42:19,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:19,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:42:19,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:42:19,983 INFO L87 Difference]: Start difference. First operand 1707 states and 2265 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:20,943 INFO L93 Difference]: Finished difference Result 3573 states and 4801 transitions. [2023-11-26 10:42:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:42:20,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2023-11-26 10:42:20,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:20,958 INFO L225 Difference]: With dead ends: 3573 [2023-11-26 10:42:20,959 INFO L226 Difference]: Without dead ends: 2139 [2023-11-26 10:42:20,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:42:20,964 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 574 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:20,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1590 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:42:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2023-11-26 10:42:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1734. [2023-11-26 10:42:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1296 states have (on average 1.3356481481481481) internal successors, (1731), 1316 states have internal predecessors, (1731), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2023-11-26 10:42:21,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2291 transitions. [2023-11-26 10:42:21,327 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2291 transitions. Word has length 92 [2023-11-26 10:42:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:21,328 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2291 transitions. [2023-11-26 10:42:21,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2291 transitions. [2023-11-26 10:42:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-26 10:42:21,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:21,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:21,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 10:42:21,331 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:21,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash 890629356, now seen corresponding path program 1 times [2023-11-26 10:42:21,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:21,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555291451] [2023-11-26 10:42:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:21,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 10:42:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:42:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:42:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:42:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:42:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:42:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:42:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:42:21,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:21,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555291451] [2023-11-26 10:42:21,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555291451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:21,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:21,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598922488] [2023-11-26 10:42:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:21,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:21,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:21,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:21,490 INFO L87 Difference]: Start difference. First operand 1734 states and 2291 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:22,003 INFO L93 Difference]: Finished difference Result 4412 states and 5861 transitions. [2023-11-26 10:42:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:42:22,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-11-26 10:42:22,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:22,022 INFO L225 Difference]: With dead ends: 4412 [2023-11-26 10:42:22,022 INFO L226 Difference]: Without dead ends: 2994 [2023-11-26 10:42:22,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:22,028 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 203 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:22,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1132 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:22,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2023-11-26 10:42:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2745. [2023-11-26 10:42:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 2032 states have (on average 1.3228346456692914) internal successors, (2688), 2063 states have internal predecessors, (2688), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-26 10:42:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 3608 transitions. [2023-11-26 10:42:22,490 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 3608 transitions. Word has length 94 [2023-11-26 10:42:22,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:22,490 INFO L495 AbstractCegarLoop]: Abstraction has 2745 states and 3608 transitions. [2023-11-26 10:42:22,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:22,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 3608 transitions. [2023-11-26 10:42:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-26 10:42:22,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:22,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:22,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 10:42:22,496 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:22,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1142837102, now seen corresponding path program 1 times [2023-11-26 10:42:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:22,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33736586] [2023-11-26 10:42:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:22,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 10:42:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:22,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 10:42:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-26 10:42:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:22,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:42:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:22,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:42:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:22,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:42:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:42:22,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:22,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33736586] [2023-11-26 10:42:22,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33736586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:22,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:22,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:22,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834219661] [2023-11-26 10:42:22,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:22,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:22,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:22,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:22,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:22,677 INFO L87 Difference]: Start difference. First operand 2745 states and 3608 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:23,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:23,341 INFO L93 Difference]: Finished difference Result 6428 states and 8486 transitions. [2023-11-26 10:42:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:42:23,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-11-26 10:42:23,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:23,384 INFO L225 Difference]: With dead ends: 6428 [2023-11-26 10:42:23,384 INFO L226 Difference]: Without dead ends: 4115 [2023-11-26 10:42:23,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:23,391 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 197 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:23,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1146 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2023-11-26 10:42:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3942. [2023-11-26 10:42:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 2905 states have (on average 1.3180722891566266) internal successors, (3829), 2949 states have internal predecessors, (3829), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2023-11-26 10:42:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5173 transitions. [2023-11-26 10:42:24,061 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5173 transitions. Word has length 94 [2023-11-26 10:42:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:24,062 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 5173 transitions. [2023-11-26 10:42:24,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5173 transitions. [2023-11-26 10:42:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 10:42:24,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:24,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:24,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-26 10:42:24,067 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:24,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:24,068 INFO L85 PathProgramCache]: Analyzing trace with hash -116500221, now seen corresponding path program 1 times [2023-11-26 10:42:24,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:24,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831387586] [2023-11-26 10:42:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:24,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:24,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:24,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:42:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:42:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 10:42:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:24,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:42:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:42:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:42:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:42:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:42:24,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831387586] [2023-11-26 10:42:24,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831387586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:24,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:24,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286455104] [2023-11-26 10:42:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:24,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:24,160 INFO L87 Difference]: Start difference. First operand 3942 states and 5173 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:24,821 INFO L93 Difference]: Finished difference Result 7585 states and 9999 transitions. [2023-11-26 10:42:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:24,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2023-11-26 10:42:24,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:24,849 INFO L225 Difference]: With dead ends: 7585 [2023-11-26 10:42:24,849 INFO L226 Difference]: Without dead ends: 3975 [2023-11-26 10:42:24,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:24,861 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 7 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:24,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 466 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:24,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2023-11-26 10:42:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3948. [2023-11-26 10:42:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 2911 states have (on average 1.3174166952937134) internal successors, (3835), 2955 states have internal predecessors, (3835), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2023-11-26 10:42:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5179 transitions. [2023-11-26 10:42:25,509 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5179 transitions. Word has length 95 [2023-11-26 10:42:25,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:25,509 INFO L495 AbstractCegarLoop]: Abstraction has 3948 states and 5179 transitions. [2023-11-26 10:42:25,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:25,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5179 transitions. [2023-11-26 10:42:25,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-26 10:42:25,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:25,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:25,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-26 10:42:25,513 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:25,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:25,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1006279155, now seen corresponding path program 1 times [2023-11-26 10:42:25,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:25,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436433154] [2023-11-26 10:42:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:25,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:25,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 10:42:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 10:42:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-26 10:42:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:42:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:42:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:42:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:42:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:25,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436433154] [2023-11-26 10:42:25,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436433154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:25,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:25,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379583984] [2023-11-26 10:42:25,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:25,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:25,661 INFO L87 Difference]: Start difference. First operand 3948 states and 5179 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:26,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:26,211 INFO L93 Difference]: Finished difference Result 7555 states and 9931 transitions. [2023-11-26 10:42:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:42:26,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 96 [2023-11-26 10:42:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:26,229 INFO L225 Difference]: With dead ends: 7555 [2023-11-26 10:42:26,229 INFO L226 Difference]: Without dead ends: 3673 [2023-11-26 10:42:26,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:26,241 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 84 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:26,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 710 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2023-11-26 10:42:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3606. [2023-11-26 10:42:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 2652 states have (on average 1.3273001508295625) internal successors, (3520), 2686 states have internal predecessors, (3520), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2023-11-26 10:42:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 4760 transitions. [2023-11-26 10:42:26,823 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 4760 transitions. Word has length 96 [2023-11-26 10:42:26,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:26,823 INFO L495 AbstractCegarLoop]: Abstraction has 3606 states and 4760 transitions. [2023-11-26 10:42:26,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:26,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 4760 transitions. [2023-11-26 10:42:26,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-26 10:42:26,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:26,826 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:26,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-26 10:42:26,827 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:26,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:26,827 INFO L85 PathProgramCache]: Analyzing trace with hash 976654501, now seen corresponding path program 1 times [2023-11-26 10:42:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:26,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990075381] [2023-11-26 10:42:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:26,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:26,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:42:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:42:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 10:42:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:42:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:26,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:42:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:26,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:42:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:26,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:42:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:42:26,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:26,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990075381] [2023-11-26 10:42:26,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990075381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:26,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:26,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:26,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655724403] [2023-11-26 10:42:26,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:26,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:26,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:26,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:26,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:26,906 INFO L87 Difference]: Start difference. First operand 3606 states and 4760 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:27,496 INFO L93 Difference]: Finished difference Result 7094 states and 9402 transitions. [2023-11-26 10:42:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:27,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-11-26 10:42:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:27,512 INFO L225 Difference]: With dead ends: 7094 [2023-11-26 10:42:27,513 INFO L226 Difference]: Without dead ends: 3657 [2023-11-26 10:42:27,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:27,523 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 7 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:27,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 464 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:42:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2023-11-26 10:42:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3616. [2023-11-26 10:42:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 2662 states have (on average 1.3260706235912847) internal successors, (3530), 2696 states have internal predecessors, (3530), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2023-11-26 10:42:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 4770 transitions. [2023-11-26 10:42:28,249 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 4770 transitions. Word has length 97 [2023-11-26 10:42:28,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:28,250 INFO L495 AbstractCegarLoop]: Abstraction has 3616 states and 4770 transitions. [2023-11-26 10:42:28,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:28,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 4770 transitions. [2023-11-26 10:42:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-26 10:42:28,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:28,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:28,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-26 10:42:28,253 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:28,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:28,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1105968182, now seen corresponding path program 1 times [2023-11-26 10:42:28,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:28,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477767309] [2023-11-26 10:42:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:42:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:42:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 10:42:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:28,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:42:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:28,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:42:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:42:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:42:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:42:28,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:28,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477767309] [2023-11-26 10:42:28,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477767309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:28,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:28,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:28,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186862688] [2023-11-26 10:42:28,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:28,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:28,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:28,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:28,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:28,406 INFO L87 Difference]: Start difference. First operand 3616 states and 4770 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:28,931 INFO L93 Difference]: Finished difference Result 7054 states and 9322 transitions. [2023-11-26 10:42:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:42:28,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-11-26 10:42:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:28,946 INFO L225 Difference]: With dead ends: 7054 [2023-11-26 10:42:28,946 INFO L226 Difference]: Without dead ends: 3547 [2023-11-26 10:42:28,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:28,956 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 66 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:28,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 715 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2023-11-26 10:42:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 2729. [2023-11-26 10:42:29,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2729 states, 2009 states have (on average 1.320059731209557) internal successors, (2652), 2028 states have internal predecessors, (2652), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2023-11-26 10:42:29,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 3590 transitions. [2023-11-26 10:42:29,364 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 3590 transitions. Word has length 97 [2023-11-26 10:42:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:29,364 INFO L495 AbstractCegarLoop]: Abstraction has 2729 states and 3590 transitions. [2023-11-26 10:42:29,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 10:42:29,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 3590 transitions. [2023-11-26 10:42:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-26 10:42:29,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:29,371 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-11-26 10:42:29,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-26 10:42:29,372 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:29,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:29,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1294447064, now seen corresponding path program 1 times [2023-11-26 10:42:29,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251102642] [2023-11-26 10:42:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:29,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:42:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:42:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 10:42:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:42:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 10:42:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 10:42:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-26 10:42:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 10:42:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 10:42:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-26 10:42:29,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:29,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251102642] [2023-11-26 10:42:29,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251102642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:29,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073136276] [2023-11-26 10:42:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:29,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:29,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:29,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:29,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:42:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:30,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:42:30,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 10:42:30,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-26 10:42:30,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073136276] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:30,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:42:30,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-26 10:42:30,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700320383] [2023-11-26 10:42:30,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:30,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 10:42:30,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 10:42:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:42:30,508 INFO L87 Difference]: Start difference. First operand 2729 states and 3590 transitions. Second operand has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 12 states have internal predecessors, (174), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2023-11-26 10:42:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:32,634 INFO L93 Difference]: Finished difference Result 6512 states and 8703 transitions. [2023-11-26 10:42:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-26 10:42:32,635 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 12 states have internal predecessors, (174), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 140 [2023-11-26 10:42:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:32,650 INFO L225 Difference]: With dead ends: 6512 [2023-11-26 10:42:32,651 INFO L226 Difference]: Without dead ends: 4019 [2023-11-26 10:42:32,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2023-11-26 10:42:32,660 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1831 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:32,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 1797 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:42:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-11-26 10:42:33,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3462. [2023-11-26 10:42:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 2553 states have (on average 1.3110066588327458) internal successors, (3347), 2577 states have internal predecessors, (3347), 585 states have call successors, (585), 323 states have call predecessors, (585), 323 states have return successors, (585), 561 states have call predecessors, (585), 585 states have call successors, (585) [2023-11-26 10:42:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 4517 transitions. [2023-11-26 10:42:33,358 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 4517 transitions. Word has length 140 [2023-11-26 10:42:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:33,359 INFO L495 AbstractCegarLoop]: Abstraction has 3462 states and 4517 transitions. [2023-11-26 10:42:33,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 12 states have internal predecessors, (174), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2023-11-26 10:42:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 4517 transitions. [2023-11-26 10:42:33,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-26 10:42:33,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:33,367 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:33,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:33,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 10:42:33,575 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:33,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 348005833, now seen corresponding path program 1 times [2023-11-26 10:42:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:33,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165638075] [2023-11-26 10:42:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:33,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 10:42:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 10:42:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 10:42:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:42:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:42:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:42:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:42:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:42:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 10:42:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:42:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 10:42:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:42:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-26 10:42:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-26 10:42:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-26 10:42:33,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:33,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165638075] [2023-11-26 10:42:33,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165638075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:33,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:33,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:42:33,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792826731] [2023-11-26 10:42:33,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:33,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:42:33,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:33,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:42:33,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:42:33,822 INFO L87 Difference]: Start difference. First operand 3462 states and 4517 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-26 10:42:35,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:35,800 INFO L93 Difference]: Finished difference Result 11208 states and 15187 transitions. [2023-11-26 10:42:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:42:35,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 149 [2023-11-26 10:42:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:35,840 INFO L225 Difference]: With dead ends: 11208 [2023-11-26 10:42:35,840 INFO L226 Difference]: Without dead ends: 8078 [2023-11-26 10:42:35,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:42:35,852 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 306 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:35,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 2234 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:42:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8078 states. [2023-11-26 10:42:37,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8078 to 6186. [2023-11-26 10:42:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6186 states, 4509 states have (on average 1.309824794854735) internal successors, (5906), 4555 states have internal predecessors, (5906), 1095 states have call successors, (1095), 581 states have call predecessors, (1095), 581 states have return successors, (1095), 1049 states have call predecessors, (1095), 1095 states have call successors, (1095) [2023-11-26 10:42:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6186 states to 6186 states and 8096 transitions. [2023-11-26 10:42:37,064 INFO L78 Accepts]: Start accepts. Automaton has 6186 states and 8096 transitions. Word has length 149 [2023-11-26 10:42:37,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:37,065 INFO L495 AbstractCegarLoop]: Abstraction has 6186 states and 8096 transitions. [2023-11-26 10:42:37,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-26 10:42:37,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6186 states and 8096 transitions. [2023-11-26 10:42:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-26 10:42:37,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:37,078 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:37,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-26 10:42:37,079 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:37,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1893082681, now seen corresponding path program 1 times [2023-11-26 10:42:37,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:37,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369720462] [2023-11-26 10:42:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:37,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:42:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:42:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:42:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 10:42:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:42:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:42:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 10:42:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:42:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:42:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:42:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:42:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 10:42:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:42:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-26 10:42:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-26 10:42:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-26 10:42:37,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:37,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369720462] [2023-11-26 10:42:37,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369720462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:37,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366773740] [2023-11-26 10:42:37,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:37,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:37,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:37,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:37,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1186375b-61e4-49d7-be7a-449b08def574/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:42:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:37,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:42:37,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 10:42:38,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 10:42:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366773740] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:38,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:42:38,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-11-26 10:42:38,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137678266] [2023-11-26 10:42:38,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:38,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 10:42:38,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:38,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 10:42:38,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:42:38,399 INFO L87 Difference]: Start difference. First operand 6186 states and 8096 transitions. Second operand has 16 states, 16 states have (on average 11.375) internal successors, (182), 14 states have internal predecessors, (182), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42)