./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 cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/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_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl --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 0.2.3-dev-cf1a783 [2023-11-12 02:11:55,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:55,519 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:11:55,525 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:55,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:55,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:55,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:55,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:55,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:55,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:55,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:55,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:55,560 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:55,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:55,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:11:55,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:55,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:55,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:55,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:55,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:11:55,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:55,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:11:55,565 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:55,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:11:55,566 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:55,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:55,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:55,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:55,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:55,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:55,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:55,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:11:55,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:55,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:55,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:55,571 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:11:55,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:55,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:55,572 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:55,573 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_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 [2023-11-12 02:11:55,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:55,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:55,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:55,963 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:55,964 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:55,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-11-12 02:11:59,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:11:59,558 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:11:59,559 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-11-12 02:11:59,575 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/data/9bb8f36b2/8dcdff21c043482eae9bf0e8fa878c73/FLAGb5e1d4a38 [2023-11-12 02:11:59,590 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/data/9bb8f36b2/8dcdff21c043482eae9bf0e8fa878c73 [2023-11-12 02:11:59,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:11:59,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:11:59,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:59,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:11:59,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:11:59,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:59" (1/1) ... [2023-11-12 02:11:59,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569b8cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:59, skipping insertion in model container [2023-11-12 02:11:59,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:59" (1/1) ... [2023-11-12 02:11:59,688 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:11:59,973 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_c36c3b77-84a6-427c-b2e2-6dfd224f837f/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2023-11-12 02:11:59,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:00,006 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:00,080 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_c36c3b77-84a6-427c-b2e2-6dfd224f837f/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2023-11-12 02:12:00,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:00,101 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:00,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00 WrapperNode [2023-11-12 02:12:00,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:00,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:00,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:00,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:00,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,178 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 497 [2023-11-12 02:12:00,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:00,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:00,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:00,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:00,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:00,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:00,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:00,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:00,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (1/1) ... [2023-11-12 02:12:00,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:00,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:00,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:00,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-11-12 02:12:00,358 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-11-12 02:12:00,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-11-12 02:12:00,359 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-11-12 02:12:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-12 02:12:00,359 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-12 02:12:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2023-11-12 02:12:00,361 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2023-11-12 02:12:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:12:00,361 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:12:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:12:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-11-12 02:12:00,364 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-11-12 02:12:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:00,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-11-12 02:12:00,365 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-11-12 02:12:00,527 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:00,528 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:01,286 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:01,304 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:01,304 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:12:01,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:01 BoogieIcfgContainer [2023-11-12 02:12:01,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:01,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:01,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:01,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:01,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:11:59" (1/3) ... [2023-11-12 02:12:01,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98e26bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:01, skipping insertion in model container [2023-11-12 02:12:01,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:00" (2/3) ... [2023-11-12 02:12:01,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98e26bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:01, skipping insertion in model container [2023-11-12 02:12:01,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:01" (3/3) ... [2023-11-12 02:12:01,324 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2023-11-12 02:12:01,347 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:01,347 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:12:01,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:01,436 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;@5b4d90d6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:01,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:12:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 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) [2023-11-12 02:12:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 02:12:01,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:01,458 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] [2023-11-12 02:12:01,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:01,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1699901086, now seen corresponding path program 1 times [2023-11-12 02:12:01,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:01,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151621359] [2023-11-12 02:12:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:01,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:01,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:01,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:01,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151621359] [2023-11-12 02:12:01,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151621359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:01,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:01,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885381565] [2023-11-12 02:12:01,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:01,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:12:01,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:12:01,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:12:01,920 INFO L87 Difference]: Start difference. First operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2023-11-12 02:12:02,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:02,048 INFO L93 Difference]: Finished difference Result 340 states and 557 transitions. [2023-11-12 02:12:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:12:02,054 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 28 [2023-11-12 02:12:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:02,073 INFO L225 Difference]: With dead ends: 340 [2023-11-12 02:12:02,073 INFO L226 Difference]: Without dead ends: 176 [2023-11-12 02:12:02,085 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 [2023-11-12 02:12:02,089 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:02,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-12 02:12:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-11-12 02:12:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.5401459854014599) internal successors, (211), 138 states have internal predecessors, (211), 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) [2023-11-12 02:12:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 273 transitions. [2023-11-12 02:12:02,175 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 273 transitions. Word has length 28 [2023-11-12 02:12:02,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:02,175 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 273 transitions. [2023-11-12 02:12:02,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2023-11-12 02:12:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 273 transitions. [2023-11-12 02:12:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 02:12:02,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:02,179 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] [2023-11-12 02:12:02,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:02,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:02,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:02,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1918755804, now seen corresponding path program 1 times [2023-11-12 02:12:02,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:02,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447253353] [2023-11-12 02:12:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:02,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:02,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:02,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:02,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447253353] [2023-11-12 02:12:02,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447253353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:02,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:02,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:12:02,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567323093] [2023-11-12 02:12:02,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:02,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:02,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:02,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:02,515 INFO L87 Difference]: Start difference. First operand 176 states and 273 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2023-11-12 02:12:02,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:02,697 INFO L93 Difference]: Finished difference Result 338 states and 520 transitions. [2023-11-12 02:12:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:12:02,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 28 [2023-11-12 02:12:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:02,702 INFO L225 Difference]: With dead ends: 338 [2023-11-12 02:12:02,703 INFO L226 Difference]: Without dead ends: 176 [2023-11-12 02:12:02,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:02,714 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 137 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:02,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1162 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-12 02:12:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-11-12 02:12:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.4525547445255473) internal successors, (199), 138 states have internal predecessors, (199), 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) [2023-11-12 02:12:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 261 transitions. [2023-11-12 02:12:02,745 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 261 transitions. Word has length 28 [2023-11-12 02:12:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:02,746 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 261 transitions. [2023-11-12 02:12:02,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2023-11-12 02:12:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 261 transitions. [2023-11-12 02:12:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:12:02,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:02,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:02,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:02,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:02,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1355709569, now seen corresponding path program 1 times [2023-11-12 02:12:02,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:02,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700568714] [2023-11-12 02:12:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:02,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:03,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:03,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700568714] [2023-11-12 02:12:03,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700568714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:03,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:03,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:03,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178766202] [2023-11-12 02:12:03,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:03,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:03,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:03,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:03,126 INFO L87 Difference]: Start difference. First operand 176 states and 261 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2023-11-12 02:12:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:03,220 INFO L93 Difference]: Finished difference Result 339 states and 512 transitions. [2023-11-12 02:12:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:03,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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 39 [2023-11-12 02:12:03,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:03,224 INFO L225 Difference]: With dead ends: 339 [2023-11-12 02:12:03,224 INFO L226 Difference]: Without dead ends: 180 [2023-11-12 02:12:03,225 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 [2023-11-12 02:12:03,226 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 5 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:03,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 755 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:03,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-12 02:12:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-11-12 02:12:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.4428571428571428) internal successors, (202), 141 states have internal predecessors, (202), 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) [2023-11-12 02:12:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 264 transitions. [2023-11-12 02:12:03,249 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 264 transitions. Word has length 39 [2023-11-12 02:12:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:03,249 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 264 transitions. [2023-11-12 02:12:03,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2023-11-12 02:12:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 264 transitions. [2023-11-12 02:12:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-12 02:12:03,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:03,252 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] [2023-11-12 02:12:03,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:12:03,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:03,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2086587661, now seen corresponding path program 1 times [2023-11-12 02:12:03,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:03,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435967711] [2023-11-12 02:12:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:03,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:12:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:03,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:03,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435967711] [2023-11-12 02:12:03,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435967711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:03,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:03,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:03,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775382384] [2023-11-12 02:12:03,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:03,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:03,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:03,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:03,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:03,362 INFO L87 Difference]: Start difference. First operand 180 states and 264 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2023-11-12 02:12:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:03,455 INFO L93 Difference]: Finished difference Result 494 states and 735 transitions. [2023-11-12 02:12:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:03,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 55 [2023-11-12 02:12:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:03,463 INFO L225 Difference]: With dead ends: 494 [2023-11-12 02:12:03,463 INFO L226 Difference]: Without dead ends: 331 [2023-11-12 02:12:03,464 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 [2023-11-12 02:12:03,466 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 212 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:03,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 523 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-12 02:12:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2023-11-12 02:12:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 249 states have (on average 1.461847389558233) internal successors, (364), 251 states have internal predecessors, (364), 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) [2023-11-12 02:12:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 484 transitions. [2023-11-12 02:12:03,515 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 484 transitions. Word has length 55 [2023-11-12 02:12:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:03,515 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 484 transitions. [2023-11-12 02:12:03,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2023-11-12 02:12:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 484 transitions. [2023-11-12 02:12:03,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-12 02:12:03,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:03,519 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] [2023-11-12 02:12:03,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:12:03,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:03,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash 651939805, now seen corresponding path program 1 times [2023-11-12 02:12:03,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:03,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745008762] [2023-11-12 02:12:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:03,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-12 02:12:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:03,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:03,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745008762] [2023-11-12 02:12:03,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745008762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:03,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:03,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:03,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733545036] [2023-11-12 02:12:03,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:03,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:03,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:03,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:03,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:03,630 INFO L87 Difference]: Start difference. First operand 326 states and 484 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2023-11-12 02:12:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:03,732 INFO L93 Difference]: Finished difference Result 917 states and 1373 transitions. [2023-11-12 02:12:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:03,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 56 [2023-11-12 02:12:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:03,745 INFO L225 Difference]: With dead ends: 917 [2023-11-12 02:12:03,745 INFO L226 Difference]: Without dead ends: 608 [2023-11-12 02:12:03,746 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 [2023-11-12 02:12:03,748 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 214 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:03,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 545 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-11-12 02:12:03,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 602. [2023-11-12 02:12:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 453 states have (on average 1.4724061810154525) internal successors, (667), 457 states have internal predecessors, (667), 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) [2023-11-12 02:12:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 901 transitions. [2023-11-12 02:12:03,859 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 901 transitions. Word has length 56 [2023-11-12 02:12:03,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:03,859 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 901 transitions. [2023-11-12 02:12:03,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2023-11-12 02:12:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 901 transitions. [2023-11-12 02:12:03,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-12 02:12:03,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:03,870 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] [2023-11-12 02:12:03,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:03,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:03,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash -627923873, now seen corresponding path program 1 times [2023-11-12 02:12:03,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:03,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420145951] [2023-11-12 02:12:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:03,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:04,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:04,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-12 02:12:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:04,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:04,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420145951] [2023-11-12 02:12:04,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420145951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:04,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:04,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:12:04,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173065884] [2023-11-12 02:12:04,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:04,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:04,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:04,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:04,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:04,070 INFO L87 Difference]: Start difference. First operand 602 states and 901 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-11-12 02:12:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:04,353 INFO L93 Difference]: Finished difference Result 1291 states and 1928 transitions. [2023-11-12 02:12:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:04,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 56 [2023-11-12 02:12:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:04,363 INFO L225 Difference]: With dead ends: 1291 [2023-11-12 02:12:04,363 INFO L226 Difference]: Without dead ends: 706 [2023-11-12 02:12:04,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:04,368 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 372 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:04,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 667 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:12:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2023-11-12 02:12:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 690. [2023-11-12 02:12:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 528 states have (on average 1.456439393939394) internal successors, (769), 531 states have internal predecessors, (769), 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) [2023-11-12 02:12:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1017 transitions. [2023-11-12 02:12:04,470 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1017 transitions. Word has length 56 [2023-11-12 02:12:04,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:04,472 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1017 transitions. [2023-11-12 02:12:04,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-11-12 02:12:04,473 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1017 transitions. [2023-11-12 02:12:04,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 02:12:04,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:04,475 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] [2023-11-12 02:12:04,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:12:04,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:04,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:04,476 INFO L85 PathProgramCache]: Analyzing trace with hash 707313810, now seen corresponding path program 1 times [2023-11-12 02:12:04,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:04,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838776501] [2023-11-12 02:12:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:04,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:04,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:04,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:04,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:12:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:04,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:04,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838776501] [2023-11-12 02:12:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838776501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:04,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:04,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:12:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537088947] [2023-11-12 02:12:04,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:04,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:04,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:04,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:04,710 INFO L87 Difference]: Start difference. First operand 690 states and 1017 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2023-11-12 02:12:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:04,965 INFO L93 Difference]: Finished difference Result 1295 states and 1928 transitions. [2023-11-12 02:12:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:04,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 57 [2023-11-12 02:12:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:04,972 INFO L225 Difference]: With dead ends: 1295 [2023-11-12 02:12:04,972 INFO L226 Difference]: Without dead ends: 710 [2023-11-12 02:12:04,975 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 [2023-11-12 02:12:04,976 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 369 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:04,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 669 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:04,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-11-12 02:12:05,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 698. [2023-11-12 02:12:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4496268656716418) internal successors, (777), 539 states have internal predecessors, (777), 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) [2023-11-12 02:12:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1025 transitions. [2023-11-12 02:12:05,055 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1025 transitions. Word has length 57 [2023-11-12 02:12:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:05,055 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1025 transitions. [2023-11-12 02:12:05,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2023-11-12 02:12:05,055 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1025 transitions. [2023-11-12 02:12:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 02:12:05,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:05,057 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] [2023-11-12 02:12:05,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:12:05,057 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:05,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:05,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1187610108, now seen corresponding path program 1 times [2023-11-12 02:12:05,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:05,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669498048] [2023-11-12 02:12:05,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:05,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:05,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:12:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:05,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:05,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669498048] [2023-11-12 02:12:05,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669498048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:05,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:05,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:05,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803402923] [2023-11-12 02:12:05,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:05,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:05,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:05,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:05,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:05,222 INFO L87 Difference]: Start difference. First operand 698 states and 1025 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2023-11-12 02:12:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:05,428 INFO L93 Difference]: Finished difference Result 1295 states and 1920 transitions. [2023-11-12 02:12:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:05,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 59 [2023-11-12 02:12:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:05,435 INFO L225 Difference]: With dead ends: 1295 [2023-11-12 02:12:05,435 INFO L226 Difference]: Without dead ends: 710 [2023-11-12 02:12:05,437 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 [2023-11-12 02:12:05,438 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 68 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:05,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 661 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:05,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-11-12 02:12:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 698. [2023-11-12 02:12:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4421641791044777) internal successors, (773), 539 states have internal predecessors, (773), 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) [2023-11-12 02:12:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1021 transitions. [2023-11-12 02:12:05,549 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1021 transitions. Word has length 59 [2023-11-12 02:12:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:05,549 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1021 transitions. [2023-11-12 02:12:05,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2023-11-12 02:12:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1021 transitions. [2023-11-12 02:12:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-12 02:12:05,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:05,551 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] [2023-11-12 02:12:05,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:12:05,551 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:05,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1980797779, now seen corresponding path program 1 times [2023-11-12 02:12:05,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:05,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19051698] [2023-11-12 02:12:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:05,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:05,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19051698] [2023-11-12 02:12:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19051698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:05,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:05,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:05,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710546698] [2023-11-12 02:12:05,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:05,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:05,766 INFO L87 Difference]: Start difference. First operand 698 states and 1021 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-12 02:12:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:05,851 INFO L93 Difference]: Finished difference Result 1303 states and 1932 transitions. [2023-11-12 02:12:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:05,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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 60 [2023-11-12 02:12:05,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:05,857 INFO L225 Difference]: With dead ends: 1303 [2023-11-12 02:12:05,857 INFO L226 Difference]: Without dead ends: 718 [2023-11-12 02:12:05,859 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 [2023-11-12 02:12:05,860 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 6 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:05,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 767 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-11-12 02:12:05,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2023-11-12 02:12:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 552 states have (on average 1.4293478260869565) internal successors, (789), 555 states have internal predecessors, (789), 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) [2023-11-12 02:12:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1037 transitions. [2023-11-12 02:12:05,926 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1037 transitions. Word has length 60 [2023-11-12 02:12:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:05,927 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1037 transitions. [2023-11-12 02:12:05,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-12 02:12:05,928 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1037 transitions. [2023-11-12 02:12:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-12 02:12:05,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:05,929 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] [2023-11-12 02:12:05,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:12:05,929 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:05,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:05,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1474712019, now seen corresponding path program 1 times [2023-11-12 02:12:05,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:05,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880329680] [2023-11-12 02:12:05,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:05,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:06,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:06,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880329680] [2023-11-12 02:12:06,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880329680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:06,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:06,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:06,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379935941] [2023-11-12 02:12:06,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:06,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:06,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:06,187 INFO L87 Difference]: Start difference. First operand 718 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-11-12 02:12:06,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:06,308 INFO L93 Difference]: Finished difference Result 1343 states and 1976 transitions. [2023-11-12 02:12:06,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:06,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 68 [2023-11-12 02:12:06,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:06,314 INFO L225 Difference]: With dead ends: 1343 [2023-11-12 02:12:06,314 INFO L226 Difference]: Without dead ends: 738 [2023-11-12 02:12:06,316 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 [2023-11-12 02:12:06,317 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 6 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:06,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:06,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-11-12 02:12:06,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2023-11-12 02:12:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 568 states have (on average 1.4172535211267605) internal successors, (805), 571 states have internal predecessors, (805), 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) [2023-11-12 02:12:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1053 transitions. [2023-11-12 02:12:06,396 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1053 transitions. Word has length 68 [2023-11-12 02:12:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:06,396 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1053 transitions. [2023-11-12 02:12:06,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-11-12 02:12:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1053 transitions. [2023-11-12 02:12:06,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 02:12:06,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:06,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:06,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:12:06,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:06,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:06,402 INFO L85 PathProgramCache]: Analyzing trace with hash -799213667, now seen corresponding path program 1 times [2023-11-12 02:12:06,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:06,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109674565] [2023-11-12 02:12:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:06,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:06,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109674565] [2023-11-12 02:12:06,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109674565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:06,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:06,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:06,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464856091] [2023-11-12 02:12:06,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:06,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:06,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:06,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:06,624 INFO L87 Difference]: Start difference. First operand 738 states and 1053 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-12 02:12:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:06,729 INFO L93 Difference]: Finished difference Result 1379 states and 1992 transitions. [2023-11-12 02:12:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:06,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 76 [2023-11-12 02:12:06,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:06,735 INFO L225 Difference]: With dead ends: 1379 [2023-11-12 02:12:06,735 INFO L226 Difference]: Without dead ends: 754 [2023-11-12 02:12:06,739 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 [2023-11-12 02:12:06,739 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 5 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:06,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 762 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:06,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-12 02:12:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-11-12 02:12:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 580 states have (on average 1.4086206896551725) internal successors, (817), 583 states have internal predecessors, (817), 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) [2023-11-12 02:12:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1065 transitions. [2023-11-12 02:12:06,809 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1065 transitions. Word has length 76 [2023-11-12 02:12:06,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:06,809 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1065 transitions. [2023-11-12 02:12:06,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-12 02:12:06,809 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1065 transitions. [2023-11-12 02:12:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 02:12:06,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:06,814 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:06,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:12:06,814 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:06,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1597245636, now seen corresponding path program 1 times [2023-11-12 02:12:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:06,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995019775] [2023-11-12 02:12:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:06,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:07,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:07,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995019775] [2023-11-12 02:12:07,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995019775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:07,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:07,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:07,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239884912] [2023-11-12 02:12:07,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:07,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:07,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:07,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:07,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:07,044 INFO L87 Difference]: Start difference. First operand 754 states and 1065 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-12 02:12:07,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:07,143 INFO L93 Difference]: Finished difference Result 1415 states and 2032 transitions. [2023-11-12 02:12:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 76 [2023-11-12 02:12:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:07,150 INFO L225 Difference]: With dead ends: 1415 [2023-11-12 02:12:07,151 INFO L226 Difference]: Without dead ends: 774 [2023-11-12 02:12:07,153 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 [2023-11-12 02:12:07,153 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 6 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:07,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:07,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-11-12 02:12:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2023-11-12 02:12:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 596 states have (on average 1.3976510067114094) internal successors, (833), 599 states have internal predecessors, (833), 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) [2023-11-12 02:12:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1081 transitions. [2023-11-12 02:12:07,250 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1081 transitions. Word has length 76 [2023-11-12 02:12:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:07,251 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1081 transitions. [2023-11-12 02:12:07,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-12 02:12:07,251 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1081 transitions. [2023-11-12 02:12:07,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-12 02:12:07,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:07,254 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:07,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:12:07,255 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:07,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:07,255 INFO L85 PathProgramCache]: Analyzing trace with hash 837268772, now seen corresponding path program 1 times [2023-11-12 02:12:07,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:07,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328078081] [2023-11-12 02:12:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:07,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:12:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 02:12:07,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:07,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328078081] [2023-11-12 02:12:07,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328078081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:07,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:07,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799449342] [2023-11-12 02:12:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:07,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:07,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:07,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:07,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:07,502 INFO L87 Difference]: Start difference. First operand 774 states and 1081 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, (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) [2023-11-12 02:12:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:07,602 INFO L93 Difference]: Finished difference Result 1459 states and 2060 transitions. [2023-11-12 02:12:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:07,603 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, (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 84 [2023-11-12 02:12:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:07,610 INFO L225 Difference]: With dead ends: 1459 [2023-11-12 02:12:07,610 INFO L226 Difference]: Without dead ends: 798 [2023-11-12 02:12:07,613 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 [2023-11-12 02:12:07,614 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 7 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:07,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 764 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2023-11-12 02:12:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2023-11-12 02:12:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 616 states have (on average 1.3847402597402598) internal successors, (853), 619 states have internal predecessors, (853), 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) [2023-11-12 02:12:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1101 transitions. [2023-11-12 02:12:07,688 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1101 transitions. Word has length 84 [2023-11-12 02:12:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:07,689 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1101 transitions. [2023-11-12 02:12:07,689 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, (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) [2023-11-12 02:12:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1101 transitions. [2023-11-12 02:12:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-12 02:12:07,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:07,693 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:07,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:12:07,693 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:07,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1610117125, now seen corresponding path program 1 times [2023-11-12 02:12:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225272380] [2023-11-12 02:12:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:07,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:12:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:12:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:12:08,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:08,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225272380] [2023-11-12 02:12:08,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225272380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:08,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:08,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:08,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348282270] [2023-11-12 02:12:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:08,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:08,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:08,112 INFO L87 Difference]: Start difference. First operand 798 states and 1101 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 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) [2023-11-12 02:12:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:08,493 INFO L93 Difference]: Finished difference Result 2201 states and 3063 transitions. [2023-11-12 02:12:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:12:08,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 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 87 [2023-11-12 02:12:08,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:08,506 INFO L225 Difference]: With dead ends: 2201 [2023-11-12 02:12:08,506 INFO L226 Difference]: Without dead ends: 1516 [2023-11-12 02:12:08,509 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 [2023-11-12 02:12:08,510 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 264 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:08,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1427 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:12:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2023-11-12 02:12:08,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1082. [2023-11-12 02:12:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 827 states have (on average 1.3724304715840387) internal successors, (1135), 832 states have internal predecessors, (1135), 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) [2023-11-12 02:12:08,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1479 transitions. [2023-11-12 02:12:08,642 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1479 transitions. Word has length 87 [2023-11-12 02:12:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:08,642 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1479 transitions. [2023-11-12 02:12:08,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 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) [2023-11-12 02:12:08,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1479 transitions. [2023-11-12 02:12:08,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-12 02:12:08,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:08,644 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] [2023-11-12 02:12:08,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:12:08,645 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:08,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1820782171, now seen corresponding path program 1 times [2023-11-12 02:12:08,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:08,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848423796] [2023-11-12 02:12:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:08,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:12:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-12 02:12:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:12:08,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:08,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848423796] [2023-11-12 02:12:08,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848423796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:08,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:08,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:08,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208001382] [2023-11-12 02:12:08,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:08,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:08,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:08,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:08,843 INFO L87 Difference]: Start difference. First operand 1082 states and 1479 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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) [2023-11-12 02:12:08,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:08,978 INFO L93 Difference]: Finished difference Result 2007 states and 2768 transitions. [2023-11-12 02:12:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:08,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 91 [2023-11-12 02:12:08,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:08,987 INFO L225 Difference]: With dead ends: 2007 [2023-11-12 02:12:08,987 INFO L226 Difference]: Without dead ends: 1106 [2023-11-12 02:12:08,990 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 [2023-11-12 02:12:08,991 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 5 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:08,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 762 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:08,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-11-12 02:12:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2023-11-12 02:12:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 845 states have (on average 1.3644970414201183) internal successors, (1153), 850 states have internal predecessors, (1153), 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) [2023-11-12 02:12:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1497 transitions. [2023-11-12 02:12:09,113 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1497 transitions. Word has length 91 [2023-11-12 02:12:09,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:09,114 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1497 transitions. [2023-11-12 02:12:09,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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) [2023-11-12 02:12:09,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1497 transitions. [2023-11-12 02:12:09,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:12:09,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:09,116 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:09,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:12:09,116 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:09,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:09,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1723609181, now seen corresponding path program 1 times [2023-11-12 02:12:09,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:09,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566430129] [2023-11-12 02:12:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:09,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:09,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:09,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:09,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:09,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:12:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:12:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-12 02:12:09,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:09,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566430129] [2023-11-12 02:12:09,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566430129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:09,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:09,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:12:09,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608636122] [2023-11-12 02:12:09,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:09,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:12:09,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:09,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:12:09,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:09,456 INFO L87 Difference]: Start difference. First operand 1106 states and 1497 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 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) [2023-11-12 02:12:09,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:09,810 INFO L93 Difference]: Finished difference Result 1536 states and 2187 transitions. [2023-11-12 02:12:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:12:09,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 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 90 [2023-11-12 02:12:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:09,824 INFO L225 Difference]: With dead ends: 1536 [2023-11-12 02:12:09,824 INFO L226 Difference]: Without dead ends: 1534 [2023-11-12 02:12:09,825 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 [2023-11-12 02:12:09,826 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 329 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:09,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 2544 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:09,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2023-11-12 02:12:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1114. [2023-11-12 02:12:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 849 states have (on average 1.3627797408716136) internal successors, (1157), 856 states have internal predecessors, (1157), 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) [2023-11-12 02:12:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1505 transitions. [2023-11-12 02:12:09,981 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1505 transitions. Word has length 90 [2023-11-12 02:12:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:09,981 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 1505 transitions. [2023-11-12 02:12:09,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 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) [2023-11-12 02:12:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1505 transitions. [2023-11-12 02:12:09,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:12:09,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:09,984 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:09,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:12:09,984 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:09,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2094931668, now seen corresponding path program 1 times [2023-11-12 02:12:09,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:09,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542888138] [2023-11-12 02:12:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:09,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:12:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:12:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-12 02:12:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542888138] [2023-11-12 02:12:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542888138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:10,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:10,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:10,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948660191] [2023-11-12 02:12:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:10,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:10,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:10,201 INFO L87 Difference]: Start difference. First operand 1114 states and 1505 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, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:12:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:10,474 INFO L93 Difference]: Finished difference Result 2014 states and 2730 transitions. [2023-11-12 02:12:10,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:12:10,475 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, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2023-11-12 02:12:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:10,484 INFO L225 Difference]: With dead ends: 2014 [2023-11-12 02:12:10,484 INFO L226 Difference]: Without dead ends: 1163 [2023-11-12 02:12:10,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:12:10,488 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 258 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:10,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1489 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2023-11-12 02:12:10,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1117. [2023-11-12 02:12:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 863 states have (on average 1.3534183082271147) internal successors, (1168), 875 states have internal predecessors, (1168), 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) [2023-11-12 02:12:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1492 transitions. [2023-11-12 02:12:10,637 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1492 transitions. Word has length 93 [2023-11-12 02:12:10,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:10,637 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1492 transitions. [2023-11-12 02:12:10,637 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, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:12:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1492 transitions. [2023-11-12 02:12:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 02:12:10,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:10,639 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:10,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:12:10,640 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:10,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1811425973, now seen corresponding path program 1 times [2023-11-12 02:12:10,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:10,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780225714] [2023-11-12 02:12:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:10,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:12:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:12:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-12 02:12:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-12 02:12:11,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:11,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780225714] [2023-11-12 02:12:11,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780225714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:11,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:11,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791304379] [2023-11-12 02:12:11,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:11,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:11,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:11,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:11,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:11,055 INFO L87 Difference]: Start difference. First operand 1117 states and 1492 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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) [2023-11-12 02:12:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:11,397 INFO L93 Difference]: Finished difference Result 2091 states and 2829 transitions. [2023-11-12 02:12:11,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:12:11,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 95 [2023-11-12 02:12:11,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:11,406 INFO L225 Difference]: With dead ends: 2091 [2023-11-12 02:12:11,406 INFO L226 Difference]: Without dead ends: 1217 [2023-11-12 02:12:11,409 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 [2023-11-12 02:12:11,411 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 206 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:11,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1652 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:11,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-11-12 02:12:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1008. [2023-11-12 02:12:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 781 states have (on average 1.3559539052496798) internal successors, (1059), 791 states have internal predecessors, (1059), 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) [2023-11-12 02:12:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1349 transitions. [2023-11-12 02:12:11,551 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1349 transitions. Word has length 95 [2023-11-12 02:12:11,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:11,551 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1349 transitions. [2023-11-12 02:12:11,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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) [2023-11-12 02:12:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1349 transitions. [2023-11-12 02:12:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-12 02:12:11,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:11,553 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] [2023-11-12 02:12:11,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 02:12:11,553 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:11,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:11,554 INFO L85 PathProgramCache]: Analyzing trace with hash -375753860, now seen corresponding path program 1 times [2023-11-12 02:12:11,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:11,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103840837] [2023-11-12 02:12:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:11,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:12:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-12 02:12:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-12 02:12:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:12:11,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:11,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103840837] [2023-11-12 02:12:11,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103840837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:11,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:11,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:12:11,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102943478] [2023-11-12 02:12:11,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:11,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:12:11,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:11,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:12:11,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:11,928 INFO L87 Difference]: Start difference. First operand 1008 states and 1349 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 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) [2023-11-12 02:12:12,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:12,704 INFO L93 Difference]: Finished difference Result 2148 states and 2922 transitions. [2023-11-12 02:12:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:12:12,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 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 96 [2023-11-12 02:12:12,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:12,714 INFO L225 Difference]: With dead ends: 2148 [2023-11-12 02:12:12,714 INFO L226 Difference]: Without dead ends: 1303 [2023-11-12 02:12:12,717 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 [2023-11-12 02:12:12,718 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 754 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:12,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1497 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:12:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2023-11-12 02:12:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1024. [2023-11-12 02:12:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 789 states have (on average 1.3333333333333333) internal successors, (1052), 800 states have internal predecessors, (1052), 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) [2023-11-12 02:12:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1348 transitions. [2023-11-12 02:12:12,888 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1348 transitions. Word has length 96 [2023-11-12 02:12:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:12,888 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1348 transitions. [2023-11-12 02:12:12,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 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) [2023-11-12 02:12:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1348 transitions. [2023-11-12 02:12:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-12 02:12:12,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:12,890 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] [2023-11-12 02:12:12,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 02:12:12,891 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:12,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:12,891 INFO L85 PathProgramCache]: Analyzing trace with hash -566843121, now seen corresponding path program 1 times [2023-11-12 02:12:12,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:12,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366351066] [2023-11-12 02:12:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:12,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:12:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:12:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-12 02:12:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:12:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-12 02:12:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:12:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-12 02:12:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:12:13,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:13,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366351066] [2023-11-12 02:12:13,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366351066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:13,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:13,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:13,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428838360] [2023-11-12 02:12:13,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:13,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:13,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:13,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:13,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:13,077 INFO L87 Difference]: Start difference. First operand 1024 states and 1348 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2023-11-12 02:12:13,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:13,362 INFO L93 Difference]: Finished difference Result 2693 states and 3570 transitions. [2023-11-12 02:12:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:13,362 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), 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 97 [2023-11-12 02:12:13,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:13,375 INFO L225 Difference]: With dead ends: 2693 [2023-11-12 02:12:13,375 INFO L226 Difference]: Without dead ends: 1883 [2023-11-12 02:12:13,378 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 [2023-11-12 02:12:13,379 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 202 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:13,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1151 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:13,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2023-11-12 02:12:13,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1768. [2023-11-12 02:12:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1343 states have (on average 1.326880119136262) internal successors, (1782), 1362 states have internal predecessors, (1782), 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) [2023-11-12 02:12:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2326 transitions. [2023-11-12 02:12:13,659 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2326 transitions. Word has length 97 [2023-11-12 02:12:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:13,659 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2326 transitions. [2023-11-12 02:12:13,660 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), 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) [2023-11-12 02:12:13,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2326 transitions. [2023-11-12 02:12:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-12 02:12:13,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:13,662 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, 1, 1] [2023-11-12 02:12:13,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 02:12:13,663 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:13,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:13,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1375100484, now seen corresponding path program 1 times [2023-11-12 02:12:13,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:13,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767907250] [2023-11-12 02:12:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:13,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:12:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:12:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:14,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-12 02:12:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:14,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:12:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-12 02:12:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:14,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:12:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:14,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-12 02:12:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:12:14,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:14,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767907250] [2023-11-12 02:12:14,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767907250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:14,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:14,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:14,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197867823] [2023-11-12 02:12:14,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:14,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:14,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:14,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:14,054 INFO L87 Difference]: Start difference. First operand 1768 states and 2326 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 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) [2023-11-12 02:12:15,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:15,132 INFO L93 Difference]: Finished difference Result 3676 states and 4904 transitions. [2023-11-12 02:12:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:12:15,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 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 99 [2023-11-12 02:12:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:15,148 INFO L225 Difference]: With dead ends: 3676 [2023-11-12 02:12:15,148 INFO L226 Difference]: Without dead ends: 2204 [2023-11-12 02:12:15,153 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 [2023-11-12 02:12:15,154 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 586 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:15,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1707 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:12:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2023-11-12 02:12:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1793. [2023-11-12 02:12:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1355 states have (on average 1.3210332103321034) internal successors, (1790), 1375 states have internal predecessors, (1790), 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) [2023-11-12 02:12:15,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2350 transitions. [2023-11-12 02:12:15,448 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2350 transitions. Word has length 99 [2023-11-12 02:12:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:15,449 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2350 transitions. [2023-11-12 02:12:15,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 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) [2023-11-12 02:12:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2350 transitions. [2023-11-12 02:12:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:12:15,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:15,469 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, 1, 1, 1, 1] [2023-11-12 02:12:15,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 02:12:15,469 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:15,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:15,470 INFO L85 PathProgramCache]: Analyzing trace with hash -599061911, now seen corresponding path program 1 times [2023-11-12 02:12:15,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:15,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146145854] [2023-11-12 02:12:15,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:15,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-12 02:12:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-12 02:12:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-12 02:12:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-12 02:12:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-12 02:12:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-12 02:12:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-12 02:12:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:12:15,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:15,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146145854] [2023-11-12 02:12:15,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146145854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:15,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:15,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:15,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548116281] [2023-11-12 02:12:15,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:15,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:15,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:15,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:15,632 INFO L87 Difference]: Start difference. First operand 1793 states and 2350 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2023-11-12 02:12:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:16,126 INFO L93 Difference]: Finished difference Result 4547 states and 5996 transitions. [2023-11-12 02:12:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:16,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 101 [2023-11-12 02:12:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:16,147 INFO L225 Difference]: With dead ends: 4547 [2023-11-12 02:12:16,147 INFO L226 Difference]: Without dead ends: 3091 [2023-11-12 02:12:16,152 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 [2023-11-12 02:12:16,154 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 208 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:16,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1189 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:16,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2023-11-12 02:12:16,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 2814. [2023-11-12 02:12:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2101 states have (on average 1.3122322703474536) internal successors, (2757), 2132 states have internal predecessors, (2757), 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) [2023-11-12 02:12:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3677 transitions. [2023-11-12 02:12:16,650 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3677 transitions. Word has length 101 [2023-11-12 02:12:16,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:16,651 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 3677 transitions. [2023-11-12 02:12:16,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2023-11-12 02:12:16,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3677 transitions. [2023-11-12 02:12:16,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:12:16,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:16,656 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, 1, 1, 1, 1] [2023-11-12 02:12:16,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-12 02:12:16,656 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:16,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 647926777, now seen corresponding path program 1 times [2023-11-12 02:12:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:16,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83212749] [2023-11-12 02:12:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:16,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:16,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:16,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-12 02:12:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:16,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:16,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-12 02:12:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:16,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-12 02:12:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:16,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-12 02:12:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:16,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-12 02:12:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:16,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:12:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:12:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83212749] [2023-11-12 02:12:16,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83212749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:16,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:16,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051656514] [2023-11-12 02:12:16,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:16,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:16,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:16,790 INFO L87 Difference]: Start difference. First operand 2814 states and 3677 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2023-11-12 02:12:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:17,427 INFO L93 Difference]: Finished difference Result 6570 states and 8628 transitions. [2023-11-12 02:12:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 101 [2023-11-12 02:12:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:17,472 INFO L225 Difference]: With dead ends: 6570 [2023-11-12 02:12:17,472 INFO L226 Difference]: Without dead ends: 4213 [2023-11-12 02:12:17,482 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 [2023-11-12 02:12:17,483 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 201 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:17,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1201 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2023-11-12 02:12:18,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4030. [2023-11-12 02:12:18,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 2993 states have (on average 1.3087203474774474) internal successors, (3917), 3037 states have internal predecessors, (3917), 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) [2023-11-12 02:12:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5261 transitions. [2023-11-12 02:12:18,185 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5261 transitions. Word has length 101 [2023-11-12 02:12:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:18,185 INFO L495 AbstractCegarLoop]: Abstraction has 4030 states and 5261 transitions. [2023-11-12 02:12:18,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2023-11-12 02:12:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5261 transitions. [2023-11-12 02:12:18,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-12 02:12:18,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:18,189 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, 1, 1, 1, 1, 1] [2023-11-12 02:12:18,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-12 02:12:18,190 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:18,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1760044486, now seen corresponding path program 1 times [2023-11-12 02:12:18,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:18,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294832223] [2023-11-12 02:12:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:18,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:18,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-12 02:12:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:18,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-12 02:12:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-12 02:12:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:18,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:18,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:12:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-12 02:12:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-12 02:12:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:12:18,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:18,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294832223] [2023-11-12 02:12:18,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294832223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:18,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:18,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:18,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646015782] [2023-11-12 02:12:18,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:18,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:18,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:18,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:18,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:18,273 INFO L87 Difference]: Start difference. First operand 4030 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-12 02:12:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:18,942 INFO L93 Difference]: Finished difference Result 7739 states and 10153 transitions. [2023-11-12 02:12:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:18,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 102 [2023-11-12 02:12:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:18,971 INFO L225 Difference]: With dead ends: 7739 [2023-11-12 02:12:18,971 INFO L226 Difference]: Without dead ends: 4063 [2023-11-12 02:12:18,981 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 [2023-11-12 02:12:18,982 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 7 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:18,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 487 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2023-11-12 02:12:19,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4036. [2023-11-12 02:12:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 2999 states have (on average 1.3081027009003001) internal successors, (3923), 3043 states have internal predecessors, (3923), 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) [2023-11-12 02:12:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 5267 transitions. [2023-11-12 02:12:19,650 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 5267 transitions. Word has length 102 [2023-11-12 02:12:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:19,651 INFO L495 AbstractCegarLoop]: Abstraction has 4036 states and 5267 transitions. [2023-11-12 02:12:19,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-12 02:12:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 5267 transitions. [2023-11-12 02:12:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-12 02:12:19,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:19,655 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, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:19,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-12 02:12:19,655 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:19,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:19,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1930890164, now seen corresponding path program 1 times [2023-11-12 02:12:19,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:19,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788351749] [2023-11-12 02:12:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:19,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-12 02:12:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-12 02:12:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-12 02:12:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-12 02:12:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-12 02:12:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:12:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:12:19,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:19,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788351749] [2023-11-12 02:12:19,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788351749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:19,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:19,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:19,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581006738] [2023-11-12 02:12:19,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:19,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:19,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:19,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:19,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:19,828 INFO L87 Difference]: Start difference. First operand 4036 states and 5267 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2023-11-12 02:12:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:20,404 INFO L93 Difference]: Finished difference Result 7708 states and 10084 transitions. [2023-11-12 02:12:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:20,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 103 [2023-11-12 02:12:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:20,420 INFO L225 Difference]: With dead ends: 7708 [2023-11-12 02:12:20,421 INFO L226 Difference]: Without dead ends: 3748 [2023-11-12 02:12:20,431 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 [2023-11-12 02:12:20,431 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 91 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:20,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 743 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:20,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2023-11-12 02:12:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3681. [2023-11-12 02:12:21,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 2727 states have (on average 1.3182984965163183) internal successors, (3595), 2761 states have internal predecessors, (3595), 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) [2023-11-12 02:12:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4835 transitions. [2023-11-12 02:12:21,097 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4835 transitions. Word has length 103 [2023-11-12 02:12:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:21,097 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 4835 transitions. [2023-11-12 02:12:21,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2023-11-12 02:12:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4835 transitions. [2023-11-12 02:12:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-12 02:12:21,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:21,105 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:21,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-12 02:12:21,106 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:21,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1500264054, now seen corresponding path program 1 times [2023-11-12 02:12:21,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:21,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236598547] [2023-11-12 02:12:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:21,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-12 02:12:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-12 02:12:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-12 02:12:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:12:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-12 02:12:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-12 02:12:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:12:21,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236598547] [2023-11-12 02:12:21,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236598547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:21,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:21,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:21,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576966284] [2023-11-12 02:12:21,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:21,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:21,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:21,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:21,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:21,215 INFO L87 Difference]: Start difference. First operand 3681 states and 4835 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-12 02:12:21,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:21,840 INFO L93 Difference]: Finished difference Result 7232 states and 9540 transitions. [2023-11-12 02:12:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 104 [2023-11-12 02:12:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:21,859 INFO L225 Difference]: With dead ends: 7232 [2023-11-12 02:12:21,860 INFO L226 Difference]: Without dead ends: 3732 [2023-11-12 02:12:21,869 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 [2023-11-12 02:12:21,870 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 7 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:21,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 487 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2023-11-12 02:12:22,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3691. [2023-11-12 02:12:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 2737 states have (on average 1.3171355498721227) internal successors, (3605), 2771 states have internal predecessors, (3605), 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) [2023-11-12 02:12:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 4845 transitions. [2023-11-12 02:12:22,418 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 4845 transitions. Word has length 104 [2023-11-12 02:12:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:22,419 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 4845 transitions. [2023-11-12 02:12:22,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-12 02:12:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 4845 transitions. [2023-11-12 02:12:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-12 02:12:22,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:22,421 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-12 02:12:22,422 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:22,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1445902481, now seen corresponding path program 1 times [2023-11-12 02:12:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79711305] [2023-11-12 02:12:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-12 02:12:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-12 02:12:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-12 02:12:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:12:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-12 02:12:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-12 02:12:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:12:22,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:22,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79711305] [2023-11-12 02:12:22,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79711305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:22,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:22,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:22,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542742982] [2023-11-12 02:12:22,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:22,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:22,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:22,610 INFO L87 Difference]: Start difference. First operand 3691 states and 4845 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2023-11-12 02:12:23,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:23,154 INFO L93 Difference]: Finished difference Result 7193 states and 9461 transitions. [2023-11-12 02:12:23,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:23,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 104 [2023-11-12 02:12:23,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:23,168 INFO L225 Difference]: With dead ends: 7193 [2023-11-12 02:12:23,168 INFO L226 Difference]: Without dead ends: 3621 [2023-11-12 02:12:23,176 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 [2023-11-12 02:12:23,177 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 72 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:23,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 753 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2023-11-12 02:12:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 2783. [2023-11-12 02:12:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2063 states have (on average 1.3116820164808531) internal successors, (2706), 2082 states have internal predecessors, (2706), 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) [2023-11-12 02:12:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3644 transitions. [2023-11-12 02:12:23,577 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3644 transitions. Word has length 104 [2023-11-12 02:12:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:23,578 INFO L495 AbstractCegarLoop]: Abstraction has 2783 states and 3644 transitions. [2023-11-12 02:12:23,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2023-11-12 02:12:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3644 transitions. [2023-11-12 02:12:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-12 02:12:23,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:23,584 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, 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] [2023-11-12 02:12:23,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-12 02:12:23,585 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:23,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:23,585 INFO L85 PathProgramCache]: Analyzing trace with hash 486642331, now seen corresponding path program 1 times [2023-11-12 02:12:23,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:23,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239871522] [2023-11-12 02:12:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:23,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:12:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:12:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-12 02:12:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-12 02:12:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-12 02:12:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-12 02:12:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-12 02:12:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:24,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-12 02:12:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-12 02:12:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-12 02:12:24,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:24,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239871522] [2023-11-12 02:12:24,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239871522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:24,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328253471] [2023-11-12 02:12:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:24,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:24,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:24,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:24,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:12:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:24,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:12:24,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-12 02:12:24,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:12:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-12 02:12:24,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328253471] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:12:24,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:12:24,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-12 02:12:24,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248506141] [2023-11-12 02:12:24,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:12:24,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:12:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:12:24,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:12:24,826 INFO L87 Difference]: Start difference. First operand 2783 states and 3644 transitions. Second operand has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 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) [2023-11-12 02:12:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:27,175 INFO L93 Difference]: Finished difference Result 6646 states and 8837 transitions. [2023-11-12 02:12:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-12 02:12:27,176 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 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 153 [2023-11-12 02:12:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:27,195 INFO L225 Difference]: With dead ends: 6646 [2023-11-12 02:12:27,195 INFO L226 Difference]: Without dead ends: 4113 [2023-11-12 02:12:27,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 332 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2023-11-12 02:12:27,204 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1908 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:27,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1908 Valid, 1866 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:12:27,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2023-11-12 02:12:28,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 3532. [2023-11-12 02:12:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 2623 states have (on average 1.3027068242470454) internal successors, (3417), 2647 states have internal predecessors, (3417), 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) [2023-11-12 02:12:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4587 transitions. [2023-11-12 02:12:28,057 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4587 transitions. Word has length 153 [2023-11-12 02:12:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:28,058 INFO L495 AbstractCegarLoop]: Abstraction has 3532 states and 4587 transitions. [2023-11-12 02:12:28,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 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) [2023-11-12 02:12:28,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4587 transitions. [2023-11-12 02:12:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-12 02:12:28,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:28,069 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, 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] [2023-11-12 02:12:28,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:28,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-12 02:12:28,277 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:28,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1175059624, now seen corresponding path program 1 times [2023-11-12 02:12:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:28,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497205699] [2023-11-12 02:12:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:28,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:12:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:12:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-12 02:12:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:12:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:12:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-12 02:12:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-12 02:12:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-12 02:12:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-12 02:12:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-12 02:12:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-12 02:12:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-12 02:12:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-12 02:12:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-12 02:12:28,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:28,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497205699] [2023-11-12 02:12:28,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497205699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:28,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:28,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:28,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649533310] [2023-11-12 02:12:28,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:28,600 INFO L87 Difference]: Start difference. First operand 3532 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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) [2023-11-12 02:12:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:30,412 INFO L93 Difference]: Finished difference Result 11374 states and 15353 transitions. [2023-11-12 02:12:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:12:30,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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 162 [2023-11-12 02:12:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:30,456 INFO L225 Difference]: With dead ends: 11374 [2023-11-12 02:12:30,456 INFO L226 Difference]: Without dead ends: 8196 [2023-11-12 02:12:30,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:12:30,468 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 319 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:30,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 2305 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:12:30,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8196 states. [2023-11-12 02:12:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8196 to 6288. [2023-11-12 02:12:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6288 states, 4611 states have (on average 1.3029711559314683) internal successors, (6008), 4657 states have internal predecessors, (6008), 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) [2023-11-12 02:12:31,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6288 states to 6288 states and 8198 transitions. [2023-11-12 02:12:31,572 INFO L78 Accepts]: Start accepts. Automaton has 6288 states and 8198 transitions. Word has length 162 [2023-11-12 02:12:31,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:31,573 INFO L495 AbstractCegarLoop]: Abstraction has 6288 states and 8198 transitions. [2023-11-12 02:12:31,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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) [2023-11-12 02:12:31,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6288 states and 8198 transitions. [2023-11-12 02:12:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-12 02:12:31,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:31,585 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:31,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-12 02:12:31,586 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:31,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:31,586 INFO L85 PathProgramCache]: Analyzing trace with hash -52637384, now seen corresponding path program 1 times [2023-11-12 02:12:31,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:31,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752796571] [2023-11-12 02:12:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:31,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:12:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:12:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:12:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-12 02:12:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:12:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-12 02:12:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:12:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-12 02:12:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-12 02:12:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-12 02:12:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-12 02:12:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-12 02:12:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-12 02:12:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-12 02:12:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-12 02:12:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-12 02:12:32,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:32,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752796571] [2023-11-12 02:12:32,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752796571] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:32,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290285839] [2023-11-12 02:12:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:32,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:32,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:32,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:32,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36c3b77-84a6-427c-b2e2-6dfd224f837f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:12:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:32,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:12:32,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 47 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 02:12:32,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:12:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-12 02:12:32,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290285839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:12:32,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:12:32,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-11-12 02:12:32,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894925312] [2023-11-12 02:12:32,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:12:32,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:12:32,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:32,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:12:32,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:12:32,927 INFO L87 Difference]: Start difference. First operand 6288 states and 8198 transitions. Second operand has 16 states, 16 states have (on average 12.875) internal successors, (206), 14 states have internal predecessors, (206), 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)