/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 09:51:17,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 09:51:17,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 09:51:17,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 09:51:17,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 09:51:17,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 09:51:17,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 09:51:17,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 09:51:17,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 09:51:17,584 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 09:51:17,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 09:51:17,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 09:51:17,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 09:51:17,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 09:51:17,586 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 09:51:17,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 09:51:17,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 09:51:17,587 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 09:51:17,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 09:51:17,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 09:51:17,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 09:51:17,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 09:51:17,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 09:51:17,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 09:51:17,589 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 09:51:17,589 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 09:51:17,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 09:51:17,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 09:51:17,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 09:51:17,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 09:51:17,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 09:51:17,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 09:51:17,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:51:17,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 09:51:17,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 09:51:17,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 09:51:17,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 09:51:17,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 09:51:17,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 09:51:17,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 09:51:17,592 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 09:51:17,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 09:51:17,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 09:51:17,593 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 09:51:17,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 09:51:17,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 09:51:17,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 09:51:17,764 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 09:51:17,764 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 09:51:17,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product18.cil.c [2023-12-21 09:51:18,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 09:51:19,141 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 09:51:19,142 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product18.cil.c [2023-12-21 09:51:19,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a309c1ac0/3b5e700a49064b429ae0aef8b306d751/FLAGae93ab210 [2023-12-21 09:51:19,176 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a309c1ac0/3b5e700a49064b429ae0aef8b306d751 [2023-12-21 09:51:19,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 09:51:19,179 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 09:51:19,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 09:51:19,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 09:51:19,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 09:51:19,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3681d3f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19, skipping insertion in model container [2023-12-21 09:51:19,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,223 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 09:51:19,619 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product18.cil.c[61907,61920] [2023-12-21 09:51:19,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:51:19,637 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 09:51:19,643 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2023-12-21 09:51:19,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1128] [2023-12-21 09:51:19,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1540] [2023-12-21 09:51:19,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1847] [2023-12-21 09:51:19,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1946] [2023-12-21 09:51:19,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2162] [2023-12-21 09:51:19,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2528] [2023-12-21 09:51:19,646 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignForward_spec.i","") [2563] [2023-12-21 09:51:19,646 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2591] [2023-12-21 09:51:19,646 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2877] [2023-12-21 09:51:19,646 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2886] [2023-12-21 09:51:19,700 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product18.cil.c[61907,61920] [2023-12-21 09:51:19,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:51:19,722 INFO L206 MainTranslator]: Completed translation [2023-12-21 09:51:19,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19 WrapperNode [2023-12-21 09:51:19,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 09:51:19,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 09:51:19,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 09:51:19,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 09:51:19,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,788 INFO L138 Inliner]: procedures = 127, calls = 185, calls flagged for inlining = 58, calls inlined = 49, statements flattened = 883 [2023-12-21 09:51:19,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 09:51:19,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 09:51:19,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 09:51:19,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 09:51:19,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,820 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-12-21 09:51:19,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 09:51:19,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 09:51:19,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 09:51:19,848 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 09:51:19,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (1/1) ... [2023-12-21 09:51:19,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:51:19,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:51:19,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 09:51:19,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 09:51:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-21 09:51:19,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-21 09:51:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 09:51:19,897 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 09:51:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 09:51:19,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 09:51:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-21 09:51:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-21 09:51:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 09:51:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 09:51:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-21 09:51:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-21 09:51:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 09:51:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 09:51:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-21 09:51:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-21 09:51:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 09:51:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 09:51:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 09:51:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-21 09:51:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-21 09:51:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 09:51:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 09:51:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 09:51:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 09:51:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 09:51:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 09:51:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 09:51:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 09:51:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 09:51:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 09:51:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-21 09:51:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-21 09:51:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 09:51:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 09:51:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 09:51:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 09:51:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 09:51:19,900 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 09:51:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 09:51:19,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 09:51:20,024 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 09:51:20,026 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 09:51:20,599 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 09:51:20,636 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 09:51:20,636 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 09:51:20,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:51:20 BoogieIcfgContainer [2023-12-21 09:51:20,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 09:51:20,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 09:51:20,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 09:51:20,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 09:51:20,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:51:19" (1/3) ... [2023-12-21 09:51:20,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647ad9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:51:20, skipping insertion in model container [2023-12-21 09:51:20,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:19" (2/3) ... [2023-12-21 09:51:20,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647ad9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:51:20, skipping insertion in model container [2023-12-21 09:51:20,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:51:20" (3/3) ... [2023-12-21 09:51:20,643 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product18.cil.c [2023-12-21 09:51:20,655 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 09:51:20,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 09:51:20,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 09:51:20,695 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;@7f22064d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 09:51:20,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 09:51:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 207 states have (on average 1.608695652173913) internal successors, (333), 209 states have internal predecessors, (333), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 09:51:20,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 09:51:20,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:20,712 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:20,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:20,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash -719261772, now seen corresponding path program 1 times [2023-12-21 09:51:20,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:20,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790149279] [2023-12-21 09:51:20,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:20,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:51:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:51:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:51:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 09:51:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 09:51:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:51:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:51:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:51:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:51:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:51:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790149279] [2023-12-21 09:51:21,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790149279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:51:21,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314516851] [2023-12-21 09:51:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:21,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:51:21,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:51:21,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:51:21,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 09:51:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:21,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 09:51:21,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:51:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:51:21,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:51:21,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314516851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:21,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:51:21,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-21 09:51:21,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727236740] [2023-12-21 09:51:21,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:21,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 09:51:21,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:21,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 09:51:21,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:51:21,547 INFO L87 Difference]: Start difference. First operand has 266 states, 207 states have (on average 1.608695652173913) internal successors, (333), 209 states have internal predecessors, (333), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:21,631 INFO L93 Difference]: Finished difference Result 387 states and 589 transitions. [2023-12-21 09:51:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 09:51:21,633 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2023-12-21 09:51:21,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:21,641 INFO L225 Difference]: With dead ends: 387 [2023-12-21 09:51:21,641 INFO L226 Difference]: Without dead ends: 263 [2023-12-21 09:51:21,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:51:21,646 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:21,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 396 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:51:21,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-21 09:51:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-12-21 09:51:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 205 states have (on average 1.5902439024390245) internal successors, (326), 206 states have internal predecessors, (326), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-21 09:51:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 405 transitions. [2023-12-21 09:51:21,697 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 405 transitions. Word has length 86 [2023-12-21 09:51:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:21,698 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 405 transitions. [2023-12-21 09:51:21,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 405 transitions. [2023-12-21 09:51:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 09:51:21,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:21,702 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:21,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 09:51:21,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 09:51:21,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:21,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:21,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1374810626, now seen corresponding path program 1 times [2023-12-21 09:51:21,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:21,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451586832] [2023-12-21 09:51:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:21,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:51:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:51:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:51:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 09:51:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 09:51:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:51:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:51:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:51:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:51:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:51:22,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:22,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451586832] [2023-12-21 09:51:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451586832] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:51:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322521674] [2023-12-21 09:51:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:22,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:51:22,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:51:22,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:51:22,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 09:51:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 09:51:22,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:51:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:51:22,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:51:22,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322521674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:22,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:51:22,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:51:22,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717265409] [2023-12-21 09:51:22,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:22,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:51:22,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:22,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:51:22,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:51:22,331 INFO L87 Difference]: Start difference. First operand 263 states and 405 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:22,360 INFO L93 Difference]: Finished difference Result 383 states and 576 transitions. [2023-12-21 09:51:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:51:22,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2023-12-21 09:51:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:22,362 INFO L225 Difference]: With dead ends: 383 [2023-12-21 09:51:22,362 INFO L226 Difference]: Without dead ends: 265 [2023-12-21 09:51:22,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:51:22,364 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 0 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:22,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 785 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:51:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-21 09:51:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-21 09:51:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 207 states have (on average 1.5845410628019323) internal successors, (328), 208 states have internal predecessors, (328), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-21 09:51:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 407 transitions. [2023-12-21 09:51:22,376 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 407 transitions. Word has length 87 [2023-12-21 09:51:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:22,377 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 407 transitions. [2023-12-21 09:51:22,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 407 transitions. [2023-12-21 09:51:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 09:51:22,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:22,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-12-21 09:51:22,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 09:51:22,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 09:51:22,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:22,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:22,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1537283285, now seen corresponding path program 1 times [2023-12-21 09:51:22,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:22,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238927903] [2023-12-21 09:51:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:22,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:51:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:51:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:51:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 09:51:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:51:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:51:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:51:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:51:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:51:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 09:51:22,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:22,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238927903] [2023-12-21 09:51:22,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238927903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:51:22,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063701021] [2023-12-21 09:51:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:22,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:51:22,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:51:22,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:51:22,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 09:51:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:51:23,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:51:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:51:23,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:51:23,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063701021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:23,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:51:23,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:51:23,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114906690] [2023-12-21 09:51:23,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:23,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:51:23,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:51:23,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:51:23,100 INFO L87 Difference]: Start difference. First operand 265 states and 407 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:23,151 INFO L93 Difference]: Finished difference Result 560 states and 873 transitions. [2023-12-21 09:51:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:51:23,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 94 [2023-12-21 09:51:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:23,156 INFO L225 Difference]: With dead ends: 560 [2023-12-21 09:51:23,156 INFO L226 Difference]: Without dead ends: 317 [2023-12-21 09:51:23,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:51:23,158 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 102 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:23,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 751 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:51:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-21 09:51:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 312. [2023-12-21 09:51:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 243 states have (on average 1.5967078189300412) internal successors, (388), 244 states have internal predecessors, (388), 51 states have call successors, (51), 17 states have call predecessors, (51), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 09:51:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 489 transitions. [2023-12-21 09:51:23,176 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 489 transitions. Word has length 94 [2023-12-21 09:51:23,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:23,177 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 489 transitions. [2023-12-21 09:51:23,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 489 transitions. [2023-12-21 09:51:23,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 09:51:23,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:23,179 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-12-21 09:51:23,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 09:51:23,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:51:23,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:23,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1127205181, now seen corresponding path program 1 times [2023-12-21 09:51:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:23,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888720035] [2023-12-21 09:51:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:51:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:51:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:51:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 09:51:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:51:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:51:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:51:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:51:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:51:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 09:51:23,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:23,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888720035] [2023-12-21 09:51:23,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888720035] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:51:23,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803235756] [2023-12-21 09:51:23,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:23,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:51:23,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:51:23,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:51:23,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 09:51:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:23,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 09:51:23,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:51:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 09:51:23,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:51:23,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803235756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:23,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:51:23,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 09:51:23,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110099720] [2023-12-21 09:51:23,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:23,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:51:23,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:23,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:51:23,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:51:23,857 INFO L87 Difference]: Start difference. First operand 312 states and 489 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:51:23,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:23,962 INFO L93 Difference]: Finished difference Result 619 states and 972 transitions. [2023-12-21 09:51:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:51:23,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 95 [2023-12-21 09:51:23,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:23,967 INFO L225 Difference]: With dead ends: 619 [2023-12-21 09:51:23,967 INFO L226 Difference]: Without dead ends: 314 [2023-12-21 09:51:23,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:23,974 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 8 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:23,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1525 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:51:23,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-21 09:51:23,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2023-12-21 09:51:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 244 states have (on average 1.5942622950819672) internal successors, (389), 246 states have internal predecessors, (389), 51 states have call successors, (51), 17 states have call predecessors, (51), 18 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2023-12-21 09:51:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 492 transitions. [2023-12-21 09:51:23,991 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 492 transitions. Word has length 95 [2023-12-21 09:51:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:23,991 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 492 transitions. [2023-12-21 09:51:23,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:51:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 492 transitions. [2023-12-21 09:51:23,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 09:51:23,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:23,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:24,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 09:51:24,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:51:24,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:24,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:24,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1528931937, now seen corresponding path program 1 times [2023-12-21 09:51:24,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:24,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672210806] [2023-12-21 09:51:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 09:51:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 09:51:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 09:51:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:51:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:51:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:51:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:51:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:51:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 09:51:24,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672210806] [2023-12-21 09:51:24,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672210806] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:51:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258608112] [2023-12-21 09:51:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:24,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:51:24,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:51:24,418 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:51:24,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 09:51:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:24,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 09:51:24,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:51:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 09:51:24,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:51:24,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258608112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:24,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:51:24,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-21 09:51:24,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524718765] [2023-12-21 09:51:24,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:24,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:51:24,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:24,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:51:24,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:51:24,681 INFO L87 Difference]: Start difference. First operand 314 states and 492 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:51:24,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:24,756 INFO L93 Difference]: Finished difference Result 621 states and 977 transitions. [2023-12-21 09:51:24,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:51:24,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 96 [2023-12-21 09:51:24,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:24,759 INFO L225 Difference]: With dead ends: 621 [2023-12-21 09:51:24,759 INFO L226 Difference]: Without dead ends: 316 [2023-12-21 09:51:24,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-21 09:51:24,761 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 8 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:24,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1511 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:51:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-21 09:51:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2023-12-21 09:51:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 245 states have (on average 1.5918367346938775) internal successors, (390), 248 states have internal predecessors, (390), 51 states have call successors, (51), 17 states have call predecessors, (51), 19 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2023-12-21 09:51:24,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 498 transitions. [2023-12-21 09:51:24,793 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 498 transitions. Word has length 96 [2023-12-21 09:51:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:24,794 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 498 transitions. [2023-12-21 09:51:24,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:51:24,794 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 498 transitions. [2023-12-21 09:51:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 09:51:24,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:24,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:24,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 09:51:25,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:51:25,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:25,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash 683114967, now seen corresponding path program 1 times [2023-12-21 09:51:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:25,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41021383] [2023-12-21 09:51:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:25,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 09:51:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:51:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 09:51:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:51:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:51:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:51:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:51:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 09:51:25,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:25,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41021383] [2023-12-21 09:51:25,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41021383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:25,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:25,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:51:25,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816086721] [2023-12-21 09:51:25,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:25,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:51:25,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:25,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:51:25,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:51:25,131 INFO L87 Difference]: Start difference. First operand 316 states and 498 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:51:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:26,502 INFO L93 Difference]: Finished difference Result 694 states and 1107 transitions. [2023-12-21 09:51:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:51:26,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2023-12-21 09:51:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:26,505 INFO L225 Difference]: With dead ends: 694 [2023-12-21 09:51:26,505 INFO L226 Difference]: Without dead ends: 397 [2023-12-21 09:51:26,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:51:26,507 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 852 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:26,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 963 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:51:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-12-21 09:51:26,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 316. [2023-12-21 09:51:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 245 states have (on average 1.5918367346938775) internal successors, (390), 248 states have internal predecessors, (390), 51 states have call successors, (51), 17 states have call predecessors, (51), 19 states have return successors, (56), 50 states have call predecessors, (56), 50 states have call successors, (56) [2023-12-21 09:51:26,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 497 transitions. [2023-12-21 09:51:26,525 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 497 transitions. Word has length 97 [2023-12-21 09:51:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:26,525 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 497 transitions. [2023-12-21 09:51:26,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:51:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 497 transitions. [2023-12-21 09:51:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 09:51:26,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:26,527 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:26,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 09:51:26,527 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:26,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:26,527 INFO L85 PathProgramCache]: Analyzing trace with hash 141922713, now seen corresponding path program 2 times [2023-12-21 09:51:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:26,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220312327] [2023-12-21 09:51:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:26,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 09:51:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 09:51:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 09:51:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:51:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:51:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:51:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:51:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 09:51:26,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:26,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220312327] [2023-12-21 09:51:26,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220312327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:26,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:26,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:51:26,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447397340] [2023-12-21 09:51:26,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:26,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:51:26,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:26,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:51:26,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:51:26,686 INFO L87 Difference]: Start difference. First operand 316 states and 497 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:51:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:27,953 INFO L93 Difference]: Finished difference Result 696 states and 1110 transitions. [2023-12-21 09:51:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:51:27,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 98 [2023-12-21 09:51:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:27,956 INFO L225 Difference]: With dead ends: 696 [2023-12-21 09:51:27,956 INFO L226 Difference]: Without dead ends: 399 [2023-12-21 09:51:27,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:51:27,957 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 847 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:27,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 963 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:51:27,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-21 09:51:27,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 318. [2023-12-21 09:51:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 246 states have (on average 1.589430894308943) internal successors, (391), 250 states have internal predecessors, (391), 51 states have call successors, (51), 17 states have call predecessors, (51), 20 states have return successors, (58), 50 states have call predecessors, (58), 50 states have call successors, (58) [2023-12-21 09:51:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 500 transitions. [2023-12-21 09:51:27,972 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 500 transitions. Word has length 98 [2023-12-21 09:51:27,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:27,972 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 500 transitions. [2023-12-21 09:51:27,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:51:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 500 transitions. [2023-12-21 09:51:27,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 09:51:27,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:27,974 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:27,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 09:51:27,974 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:27,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:27,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1799415004, now seen corresponding path program 1 times [2023-12-21 09:51:27,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:27,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036260991] [2023-12-21 09:51:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:27,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:51:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 09:51:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:51:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:51:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:51:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:51:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 09:51:28,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:28,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036260991] [2023-12-21 09:51:28,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036260991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:28,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:28,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:51:28,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347809351] [2023-12-21 09:51:28,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:28,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:51:28,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:28,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:51:28,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:51:28,107 INFO L87 Difference]: Start difference. First operand 318 states and 500 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 09:51:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:29,761 INFO L93 Difference]: Finished difference Result 694 states and 1105 transitions. [2023-12-21 09:51:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:51:29,761 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 99 [2023-12-21 09:51:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:29,764 INFO L225 Difference]: With dead ends: 694 [2023-12-21 09:51:29,764 INFO L226 Difference]: Without dead ends: 399 [2023-12-21 09:51:29,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 09:51:29,765 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 858 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:29,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1331 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 09:51:29,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-21 09:51:29,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 318. [2023-12-21 09:51:29,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 246 states have (on average 1.589430894308943) internal successors, (391), 250 states have internal predecessors, (391), 51 states have call successors, (51), 17 states have call predecessors, (51), 20 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2023-12-21 09:51:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 499 transitions. [2023-12-21 09:51:29,780 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 499 transitions. Word has length 99 [2023-12-21 09:51:29,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:29,780 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 499 transitions. [2023-12-21 09:51:29,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 09:51:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 499 transitions. [2023-12-21 09:51:29,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 09:51:29,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:29,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:29,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 09:51:29,782 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:29,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:29,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1764003318, now seen corresponding path program 2 times [2023-12-21 09:51:29,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678847908] [2023-12-21 09:51:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:29,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:51:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:51:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:51:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:51:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:51:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:51:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 09:51:29,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:29,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678847908] [2023-12-21 09:51:29,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678847908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:29,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:29,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:51:29,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597874150] [2023-12-21 09:51:29,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:29,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:51:29,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:51:29,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:51:29,920 INFO L87 Difference]: Start difference. First operand 318 states and 499 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 09:51:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:31,608 INFO L93 Difference]: Finished difference Result 696 states and 1111 transitions. [2023-12-21 09:51:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:51:31,608 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 100 [2023-12-21 09:51:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:31,610 INFO L225 Difference]: With dead ends: 696 [2023-12-21 09:51:31,610 INFO L226 Difference]: Without dead ends: 401 [2023-12-21 09:51:31,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 09:51:31,612 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 853 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:31,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1331 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 09:51:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-12-21 09:51:31,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 320. [2023-12-21 09:51:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 247 states have (on average 1.5870445344129556) internal successors, (392), 252 states have internal predecessors, (392), 51 states have call successors, (51), 17 states have call predecessors, (51), 21 states have return successors, (62), 50 states have call predecessors, (62), 50 states have call successors, (62) [2023-12-21 09:51:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 505 transitions. [2023-12-21 09:51:31,624 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 505 transitions. Word has length 100 [2023-12-21 09:51:31,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:31,624 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 505 transitions. [2023-12-21 09:51:31,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 09:51:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 505 transitions. [2023-12-21 09:51:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 09:51:31,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:31,625 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 09:51:31,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 09:51:31,626 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:31,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2099335903, now seen corresponding path program 1 times [2023-12-21 09:51:31,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:31,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206840228] [2023-12-21 09:51:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:31,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:51:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:51:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:51:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:51:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:51:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:51:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 09:51:31,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:31,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206840228] [2023-12-21 09:51:31,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206840228] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:51:31,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835048876] [2023-12-21 09:51:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:31,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:51:31,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:51:31,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:51:31,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 09:51:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:31,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:51:31,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:51:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:32,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:51:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:32,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835048876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:51:32,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:51:32,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-12-21 09:51:32,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238573653] [2023-12-21 09:51:32,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:51:32,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 09:51:32,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 09:51:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:51:32,103 INFO L87 Difference]: Start difference. First operand 320 states and 505 transitions. Second operand has 15 states, 14 states have (on average 7.5) internal successors, (105), 11 states have internal predecessors, (105), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-21 09:51:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:34,104 INFO L93 Difference]: Finished difference Result 1025 states and 1722 transitions. [2023-12-21 09:51:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 09:51:34,104 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.5) internal successors, (105), 11 states have internal predecessors, (105), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 101 [2023-12-21 09:51:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:34,108 INFO L225 Difference]: With dead ends: 1025 [2023-12-21 09:51:34,108 INFO L226 Difference]: Without dead ends: 731 [2023-12-21 09:51:34,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-12-21 09:51:34,109 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1824 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 3463 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 3980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 3463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:34,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 1513 Invalid, 3980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 3463 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 09:51:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-21 09:51:34,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 635. [2023-12-21 09:51:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 498 states have (on average 1.6265060240963856) internal successors, (810), 503 states have internal predecessors, (810), 115 states have call successors, (115), 17 states have call predecessors, (115), 21 states have return successors, (136), 114 states have call predecessors, (136), 114 states have call successors, (136) [2023-12-21 09:51:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1061 transitions. [2023-12-21 09:51:34,142 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1061 transitions. Word has length 101 [2023-12-21 09:51:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:34,143 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1061 transitions. [2023-12-21 09:51:34,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.5) internal successors, (105), 11 states have internal predecessors, (105), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-21 09:51:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1061 transitions. [2023-12-21 09:51:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 09:51:34,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:34,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1] [2023-12-21 09:51:34,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 09:51:34,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:51:34,358 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:34,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:34,359 INFO L85 PathProgramCache]: Analyzing trace with hash -484648275, now seen corresponding path program 1 times [2023-12-21 09:51:34,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:34,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435002346] [2023-12-21 09:51:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:34,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:51:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:51:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:51:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:51:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:51:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:51:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:34,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:34,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435002346] [2023-12-21 09:51:34,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435002346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:34,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:34,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:51:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526586117] [2023-12-21 09:51:34,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:34,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:51:34,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:34,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:51:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:51:34,457 INFO L87 Difference]: Start difference. First operand 635 states and 1061 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:35,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:35,264 INFO L93 Difference]: Finished difference Result 1580 states and 2711 transitions. [2023-12-21 09:51:35,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:51:35,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2023-12-21 09:51:35,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:35,269 INFO L225 Difference]: With dead ends: 1580 [2023-12-21 09:51:35,269 INFO L226 Difference]: Without dead ends: 1013 [2023-12-21 09:51:35,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:35,272 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 940 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:35,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 740 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:51:35,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2023-12-21 09:51:35,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 927. [2023-12-21 09:51:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 726 states have (on average 1.6349862258953167) internal successors, (1187), 731 states have internal predecessors, (1187), 179 states have call successors, (179), 17 states have call predecessors, (179), 21 states have return successors, (210), 178 states have call predecessors, (210), 178 states have call successors, (210) [2023-12-21 09:51:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1576 transitions. [2023-12-21 09:51:35,319 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1576 transitions. Word has length 105 [2023-12-21 09:51:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:35,319 INFO L495 AbstractCegarLoop]: Abstraction has 927 states and 1576 transitions. [2023-12-21 09:51:35,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:35,319 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1576 transitions. [2023-12-21 09:51:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 09:51:35,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:35,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1] [2023-12-21 09:51:35,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 09:51:35,323 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:35,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:35,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2049656214, now seen corresponding path program 1 times [2023-12-21 09:51:35,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:35,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101980699] [2023-12-21 09:51:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:35,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:51:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:51:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:51:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:51:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:51:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:51:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:35,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:35,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101980699] [2023-12-21 09:51:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101980699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:35,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:35,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:51:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915071576] [2023-12-21 09:51:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:35,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:51:35,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:35,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:51:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:51:35,390 INFO L87 Difference]: Start difference. First operand 927 states and 1576 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:36,241 INFO L93 Difference]: Finished difference Result 2297 states and 3968 transitions. [2023-12-21 09:51:36,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:51:36,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2023-12-21 09:51:36,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:36,250 INFO L225 Difference]: With dead ends: 2297 [2023-12-21 09:51:36,250 INFO L226 Difference]: Without dead ends: 1488 [2023-12-21 09:51:36,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:36,253 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 938 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:36,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 710 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:51:36,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2023-12-21 09:51:36,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1402. [2023-12-21 09:51:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1106 states have (on average 1.6374321880650995) internal successors, (1811), 1111 states have internal predecessors, (1811), 274 states have call successors, (274), 17 states have call predecessors, (274), 21 states have return successors, (305), 273 states have call predecessors, (305), 273 states have call successors, (305) [2023-12-21 09:51:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 2390 transitions. [2023-12-21 09:51:36,301 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 2390 transitions. Word has length 106 [2023-12-21 09:51:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:36,301 INFO L495 AbstractCegarLoop]: Abstraction has 1402 states and 2390 transitions. [2023-12-21 09:51:36,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 2390 transitions. [2023-12-21 09:51:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 09:51:36,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:36,306 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-12-21 09:51:36,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 09:51:36,306 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:36,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:36,306 INFO L85 PathProgramCache]: Analyzing trace with hash 843187611, now seen corresponding path program 1 times [2023-12-21 09:51:36,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:36,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889448088] [2023-12-21 09:51:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:36,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:51:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:51:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:51:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:51:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:51:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:51:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:36,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:36,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889448088] [2023-12-21 09:51:36,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889448088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:36,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:36,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:51:36,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432035585] [2023-12-21 09:51:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:36,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:51:36,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:51:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:51:36,384 INFO L87 Difference]: Start difference. First operand 1402 states and 2390 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:37,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:37,435 INFO L93 Difference]: Finished difference Result 3359 states and 5846 transitions. [2023-12-21 09:51:37,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:51:37,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2023-12-21 09:51:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:37,444 INFO L225 Difference]: With dead ends: 3359 [2023-12-21 09:51:37,445 INFO L226 Difference]: Without dead ends: 2203 [2023-12-21 09:51:37,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:37,449 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 937 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:37,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 701 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:51:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2023-12-21 09:51:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2117. [2023-12-21 09:51:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 1698 states have (on average 1.6401648998822145) internal successors, (2785), 1703 states have internal predecessors, (2785), 397 states have call successors, (397), 17 states have call predecessors, (397), 21 states have return successors, (444), 396 states have call predecessors, (444), 396 states have call successors, (444) [2023-12-21 09:51:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3626 transitions. [2023-12-21 09:51:37,525 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3626 transitions. Word has length 107 [2023-12-21 09:51:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:37,525 INFO L495 AbstractCegarLoop]: Abstraction has 2117 states and 3626 transitions. [2023-12-21 09:51:37,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3626 transitions. [2023-12-21 09:51:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 09:51:37,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:37,531 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2023-12-21 09:51:37,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 09:51:37,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:37,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1495339625, now seen corresponding path program 1 times [2023-12-21 09:51:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790266738] [2023-12-21 09:51:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:51:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:51:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:51:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:51:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:51:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:51:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:37,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:37,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790266738] [2023-12-21 09:51:37,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790266738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:37,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:37,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:51:37,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6659959] [2023-12-21 09:51:37,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:37,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:51:37,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:37,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:51:37,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:51:37,633 INFO L87 Difference]: Start difference. First operand 2117 states and 3626 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:38,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:38,569 INFO L93 Difference]: Finished difference Result 5001 states and 8759 transitions. [2023-12-21 09:51:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:51:38,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-12-21 09:51:38,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:38,590 INFO L225 Difference]: With dead ends: 5001 [2023-12-21 09:51:38,591 INFO L226 Difference]: Without dead ends: 3339 [2023-12-21 09:51:38,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:38,641 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 935 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:38,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 702 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:51:38,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2023-12-21 09:51:38,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3253. [2023-12-21 09:51:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 2655 states have (on average 1.6418079096045197) internal successors, (4359), 2660 states have internal predecessors, (4359), 576 states have call successors, (576), 17 states have call predecessors, (576), 21 states have return successors, (649), 575 states have call predecessors, (649), 575 states have call successors, (649) [2023-12-21 09:51:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 5584 transitions. [2023-12-21 09:51:38,738 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 5584 transitions. Word has length 108 [2023-12-21 09:51:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:38,738 INFO L495 AbstractCegarLoop]: Abstraction has 3253 states and 5584 transitions. [2023-12-21 09:51:38,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 5584 transitions. [2023-12-21 09:51:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 09:51:38,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:38,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:38,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 09:51:38,746 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:38,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:38,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1445763529, now seen corresponding path program 1 times [2023-12-21 09:51:38,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:38,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487832938] [2023-12-21 09:51:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:38,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:51:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:51:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:51:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:51:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:51:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:51:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:38,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:38,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487832938] [2023-12-21 09:51:38,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487832938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:38,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:38,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:51:38,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753090823] [2023-12-21 09:51:38,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:38,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:51:38,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:51:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:51:38,815 INFO L87 Difference]: Start difference. First operand 3253 states and 5584 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:39,697 INFO L93 Difference]: Finished difference Result 7956 states and 13957 transitions. [2023-12-21 09:51:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:51:39,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2023-12-21 09:51:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:39,718 INFO L225 Difference]: With dead ends: 7956 [2023-12-21 09:51:39,718 INFO L226 Difference]: Without dead ends: 5397 [2023-12-21 09:51:39,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:39,727 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 933 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:39,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 743 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:51:39,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5397 states. [2023-12-21 09:51:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5397 to 5311. [2023-12-21 09:51:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5311 states, 4337 states have (on average 1.632925985704404) internal successors, (7082), 4342 states have internal predecessors, (7082), 952 states have call successors, (952), 17 states have call predecessors, (952), 21 states have return successors, (1069), 951 states have call predecessors, (1069), 951 states have call successors, (1069) [2023-12-21 09:51:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 9103 transitions. [2023-12-21 09:51:39,928 INFO L78 Accepts]: Start accepts. Automaton has 5311 states and 9103 transitions. Word has length 109 [2023-12-21 09:51:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:39,929 INFO L495 AbstractCegarLoop]: Abstraction has 5311 states and 9103 transitions. [2023-12-21 09:51:39,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:39,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5311 states and 9103 transitions. [2023-12-21 09:51:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 09:51:39,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:39,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:39,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 09:51:39,938 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:39,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1461390587, now seen corresponding path program 1 times [2023-12-21 09:51:39,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:39,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442427655] [2023-12-21 09:51:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:39,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:39,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:39,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:39,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:51:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:40,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:51:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:51:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:40,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:51:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:51:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:51:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:40,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:40,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442427655] [2023-12-21 09:51:40,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442427655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:40,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:40,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:51:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910650885] [2023-12-21 09:51:40,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:40,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:51:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:40,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:51:40,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:51:40,010 INFO L87 Difference]: Start difference. First operand 5311 states and 9103 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:41,093 INFO L93 Difference]: Finished difference Result 13161 states and 23041 transitions. [2023-12-21 09:51:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:51:41,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2023-12-21 09:51:41,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:41,154 INFO L225 Difference]: With dead ends: 13161 [2023-12-21 09:51:41,154 INFO L226 Difference]: Without dead ends: 8930 [2023-12-21 09:51:41,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:41,168 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 930 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:41,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 703 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:51:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8930 states. [2023-12-21 09:51:41,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8930 to 8844. [2023-12-21 09:51:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8844 states, 7264 states have (on average 1.629818281938326) internal successors, (11839), 7269 states have internal predecessors, (11839), 1558 states have call successors, (1558), 17 states have call predecessors, (1558), 21 states have return successors, (1753), 1557 states have call predecessors, (1753), 1557 states have call successors, (1753) [2023-12-21 09:51:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8844 states to 8844 states and 15150 transitions. [2023-12-21 09:51:41,493 INFO L78 Accepts]: Start accepts. Automaton has 8844 states and 15150 transitions. Word has length 110 [2023-12-21 09:51:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:41,494 INFO L495 AbstractCegarLoop]: Abstraction has 8844 states and 15150 transitions. [2023-12-21 09:51:41,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 8844 states and 15150 transitions. [2023-12-21 09:51:41,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 09:51:41,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:41,506 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:41,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 09:51:41,506 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:41,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:41,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1991589657, now seen corresponding path program 1 times [2023-12-21 09:51:41,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:41,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995144214] [2023-12-21 09:51:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:41,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:51:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:51:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:51:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:51:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:51:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:51:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:41,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:41,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995144214] [2023-12-21 09:51:41,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995144214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:41,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:41,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:51:41,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995497729] [2023-12-21 09:51:41,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:41,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:51:41,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:41,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:51:41,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:51:41,571 INFO L87 Difference]: Start difference. First operand 8844 states and 15150 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:42,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:42,751 INFO L93 Difference]: Finished difference Result 22933 states and 40070 transitions. [2023-12-21 09:51:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:51:42,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2023-12-21 09:51:42,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:42,797 INFO L225 Difference]: With dead ends: 22933 [2023-12-21 09:51:42,798 INFO L226 Difference]: Without dead ends: 15602 [2023-12-21 09:51:42,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:42,819 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 928 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:42,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 721 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:51:42,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15602 states. [2023-12-21 09:51:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15602 to 15516. [2023-12-21 09:51:43,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15516 states, 12733 states have (on average 1.6200424094871593) internal successors, (20628), 12738 states have internal predecessors, (20628), 2761 states have call successors, (2761), 17 states have call predecessors, (2761), 21 states have return successors, (3100), 2760 states have call predecessors, (3100), 2760 states have call successors, (3100) [2023-12-21 09:51:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15516 states to 15516 states and 26489 transitions. [2023-12-21 09:51:43,411 INFO L78 Accepts]: Start accepts. Automaton has 15516 states and 26489 transitions. Word has length 111 [2023-12-21 09:51:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:43,412 INFO L495 AbstractCegarLoop]: Abstraction has 15516 states and 26489 transitions. [2023-12-21 09:51:43,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 15516 states and 26489 transitions. [2023-12-21 09:51:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 09:51:43,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:43,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:43,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 09:51:43,429 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:43,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash -768487268, now seen corresponding path program 1 times [2023-12-21 09:51:43,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:43,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983244348] [2023-12-21 09:51:43,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:43,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:51:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:51:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:51:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:51:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:51:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:51:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:43,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:43,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983244348] [2023-12-21 09:51:43,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983244348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:43,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:43,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:51:43,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710679262] [2023-12-21 09:51:43,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:43,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:51:43,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:43,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:51:43,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:51:43,587 INFO L87 Difference]: Start difference. First operand 15516 states and 26489 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:45,012 INFO L93 Difference]: Finished difference Result 41100 states and 71668 transitions. [2023-12-21 09:51:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:51:45,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2023-12-21 09:51:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:45,109 INFO L225 Difference]: With dead ends: 41100 [2023-12-21 09:51:45,110 INFO L226 Difference]: Without dead ends: 27717 [2023-12-21 09:51:45,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:45,148 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 926 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:45,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 703 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:51:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27717 states. [2023-12-21 09:51:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27717 to 27631. [2023-12-21 09:51:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27631 states, 22809 states have (on average 1.6158095488622912) internal successors, (36855), 22814 states have internal predecessors, (36855), 4800 states have call successors, (4800), 17 states have call predecessors, (4800), 21 states have return successors, (5413), 4799 states have call predecessors, (5413), 4799 states have call successors, (5413) [2023-12-21 09:51:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27631 states to 27631 states and 47068 transitions. [2023-12-21 09:51:46,287 INFO L78 Accepts]: Start accepts. Automaton has 27631 states and 47068 transitions. Word has length 112 [2023-12-21 09:51:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:46,288 INFO L495 AbstractCegarLoop]: Abstraction has 27631 states and 47068 transitions. [2023-12-21 09:51:46,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 27631 states and 47068 transitions. [2023-12-21 09:51:46,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 09:51:46,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:46,309 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:46,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 09:51:46,309 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:46,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1490886747, now seen corresponding path program 1 times [2023-12-21 09:51:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:46,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726160030] [2023-12-21 09:51:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:46,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:51:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:51:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:51:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:51:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:51:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:51:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:46,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:46,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726160030] [2023-12-21 09:51:46,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726160030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:46,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:46,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:51:46,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27249224] [2023-12-21 09:51:46,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:46,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:51:46,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:46,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:51:46,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:51:46,395 INFO L87 Difference]: Start difference. First operand 27631 states and 47068 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:48,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:48,403 INFO L93 Difference]: Finished difference Result 75292 states and 130462 transitions. [2023-12-21 09:51:48,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:51:48,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2023-12-21 09:51:48,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:48,585 INFO L225 Difference]: With dead ends: 75292 [2023-12-21 09:51:48,586 INFO L226 Difference]: Without dead ends: 50541 [2023-12-21 09:51:48,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:48,635 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 924 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:48,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 717 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:51:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50541 states. [2023-12-21 09:51:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50541 to 50455. [2023-12-21 09:51:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50455 states, 41918 states have (on average 1.6103583186220716) internal successors, (67503), 41923 states have internal predecessors, (67503), 8515 states have call successors, (8515), 17 states have call predecessors, (8515), 21 states have return successors, (9660), 8514 states have call predecessors, (9660), 8514 states have call successors, (9660) [2023-12-21 09:51:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50455 states to 50455 states and 85678 transitions. [2023-12-21 09:51:50,718 INFO L78 Accepts]: Start accepts. Automaton has 50455 states and 85678 transitions. Word has length 113 [2023-12-21 09:51:50,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:50,718 INFO L495 AbstractCegarLoop]: Abstraction has 50455 states and 85678 transitions. [2023-12-21 09:51:50,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 50455 states and 85678 transitions. [2023-12-21 09:51:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 09:51:50,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:50,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 09:51:50,739 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:50,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -401494308, now seen corresponding path program 1 times [2023-12-21 09:51:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:50,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41989620] [2023-12-21 09:51:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:51:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:51:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:51:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:51:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:51:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:51:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:50,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:50,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41989620] [2023-12-21 09:51:50,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41989620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:50,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:50,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:51:50,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866364514] [2023-12-21 09:51:50,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:50,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:51:50,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:51:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:51:50,826 INFO L87 Difference]: Start difference. First operand 50455 states and 85678 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:53,607 INFO L93 Difference]: Finished difference Result 94039 states and 163368 transitions. [2023-12-21 09:51:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:51:53,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-12-21 09:51:53,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:53,960 INFO L225 Difference]: With dead ends: 94039 [2023-12-21 09:51:53,960 INFO L226 Difference]: Without dead ends: 93921 [2023-12-21 09:51:53,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:51:54,001 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 923 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:54,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 702 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:51:54,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93921 states. [2023-12-21 09:51:56,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93921 to 93835. [2023-12-21 09:51:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93835 states, 78499 states have (on average 1.6034726557026204) internal successors, (125871), 78504 states have internal predecessors, (125871), 15314 states have call successors, (15314), 17 states have call predecessors, (15314), 21 states have return successors, (17505), 15313 states have call predecessors, (17505), 15313 states have call successors, (17505) [2023-12-21 09:51:57,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93835 states to 93835 states and 158690 transitions. [2023-12-21 09:51:57,214 INFO L78 Accepts]: Start accepts. Automaton has 93835 states and 158690 transitions. Word has length 114 [2023-12-21 09:51:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:51:57,214 INFO L495 AbstractCegarLoop]: Abstraction has 93835 states and 158690 transitions. [2023-12-21 09:51:57,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:51:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 93835 states and 158690 transitions. [2023-12-21 09:51:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 09:51:57,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:51:57,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:51:57,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 09:51:57,236 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:51:57,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:51:57,236 INFO L85 PathProgramCache]: Analyzing trace with hash -249797574, now seen corresponding path program 1 times [2023-12-21 09:51:57,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:51:57,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952856287] [2023-12-21 09:51:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:51:57,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:51:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:51:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:51:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:51:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:51:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:51:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:51:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:51:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:51:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:51:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:51:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:51:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:51:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:51:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:51:57,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:51:57,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952856287] [2023-12-21 09:51:57,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952856287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:51:57,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:51:57,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 09:51:57,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108416432] [2023-12-21 09:51:57,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:51:57,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 09:51:57,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:51:57,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 09:51:57,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:51:57,717 INFO L87 Difference]: Start difference. First operand 93835 states and 158690 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:52:01,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:52:01,471 INFO L93 Difference]: Finished difference Result 94218 states and 162552 transitions. [2023-12-21 09:52:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 09:52:01,472 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2023-12-21 09:52:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:52:01,998 INFO L225 Difference]: With dead ends: 94218 [2023-12-21 09:52:01,998 INFO L226 Difference]: Without dead ends: 94107 [2023-12-21 09:52:02,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2023-12-21 09:52:02,036 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1301 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 3032 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 3032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 09:52:02,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 952 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 3032 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 09:52:02,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94107 states. [2023-12-21 09:52:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94107 to 93948. [2023-12-21 09:52:05,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93948 states, 78589 states have (on average 1.6033668834060746) internal successors, (126007), 78594 states have internal predecessors, (126007), 15326 states have call successors, (15326), 26 states have call predecessors, (15326), 32 states have return successors, (17520), 15327 states have call predecessors, (17520), 15324 states have call successors, (17520) [2023-12-21 09:52:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93948 states to 93948 states and 158853 transitions. [2023-12-21 09:52:05,664 INFO L78 Accepts]: Start accepts. Automaton has 93948 states and 158853 transitions. Word has length 115 [2023-12-21 09:52:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:52:05,664 INFO L495 AbstractCegarLoop]: Abstraction has 93948 states and 158853 transitions. [2023-12-21 09:52:05,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:52:05,665 INFO L276 IsEmpty]: Start isEmpty. Operand 93948 states and 158853 transitions. [2023-12-21 09:52:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 09:52:05,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:52:05,690 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:52:05,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 09:52:05,691 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:52:05,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:52:05,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1413052392, now seen corresponding path program 1 times [2023-12-21 09:52:05,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:52:05,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644244207] [2023-12-21 09:52:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:52:05,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:52:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:52:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:52:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:52:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:52:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:52:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:52:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:52:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:52:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:52:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:52:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:52:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:52:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:52:05,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:52:05,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644244207] [2023-12-21 09:52:05,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644244207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:52:05,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:52:05,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 09:52:05,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705375885] [2023-12-21 09:52:05,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:52:05,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 09:52:05,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:52:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 09:52:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-12-21 09:52:05,925 INFO L87 Difference]: Start difference. First operand 93948 states and 158853 transitions. Second operand has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 9 states have internal predecessors, (74), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-21 09:52:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:52:10,246 INFO L93 Difference]: Finished difference Result 94561 states and 163097 transitions. [2023-12-21 09:52:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 09:52:10,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 9 states have internal predecessors, (74), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 116 [2023-12-21 09:52:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:52:10,564 INFO L225 Difference]: With dead ends: 94561 [2023-12-21 09:52:10,564 INFO L226 Difference]: Without dead ends: 94149 [2023-12-21 09:52:10,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=327, Invalid=1313, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 09:52:10,607 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1441 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 3852 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 4201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:52:10,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 1608 Invalid, 4201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3852 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 09:52:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94149 states. [2023-12-21 09:52:13,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94149 to 93985. [2023-12-21 09:52:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93985 states, 78618 states have (on average 1.603284235162431) internal successors, (126047), 78626 states have internal predecessors, (126047), 15332 states have call successors, (15332), 27 states have call predecessors, (15332), 34 states have return successors, (17528), 15331 states have call predecessors, (17528), 15330 states have call successors, (17528) [2023-12-21 09:52:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93985 states to 93985 states and 158907 transitions. [2023-12-21 09:52:14,008 INFO L78 Accepts]: Start accepts. Automaton has 93985 states and 158907 transitions. Word has length 116 [2023-12-21 09:52:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:52:14,008 INFO L495 AbstractCegarLoop]: Abstraction has 93985 states and 158907 transitions. [2023-12-21 09:52:14,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.166666666666667) internal successors, (74), 9 states have internal predecessors, (74), 7 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-21 09:52:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 93985 states and 158907 transitions. [2023-12-21 09:52:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 09:52:14,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:52:14,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:52:14,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 09:52:14,034 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:52:14,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:52:14,035 INFO L85 PathProgramCache]: Analyzing trace with hash -190492432, now seen corresponding path program 1 times [2023-12-21 09:52:14,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:52:14,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833554881] [2023-12-21 09:52:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:52:14,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:52:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:52:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:52:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:52:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:52:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:52:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:52:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:52:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:52:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:52:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:52:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:52:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:52:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 09:52:14,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:52:14,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833554881] [2023-12-21 09:52:14,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833554881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:52:14,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:52:14,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:52:14,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36594740] [2023-12-21 09:52:14,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:52:14,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:52:14,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:52:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:52:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:52:14,194 INFO L87 Difference]: Start difference. First operand 93985 states and 158907 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:52:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:52:18,351 INFO L93 Difference]: Finished difference Result 94652 states and 163208 transitions. [2023-12-21 09:52:18,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 09:52:18,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2023-12-21 09:52:18,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:52:18,652 INFO L225 Difference]: With dead ends: 94652 [2023-12-21 09:52:18,652 INFO L226 Difference]: Without dead ends: 94584 [2023-12-21 09:52:18,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 09:52:18,690 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1377 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 3652 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 4001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:52:18,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 1353 Invalid, 4001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3652 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 09:52:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94584 states. [2023-12-21 09:52:21,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94584 to 94258. [2023-12-21 09:52:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94258 states, 78835 states have (on average 1.6029555400520075) internal successors, (126369), 78846 states have internal predecessors, (126369), 15361 states have call successors, (15361), 45 states have call predecessors, (15361), 61 states have return successors, (17572), 15366 states have call predecessors, (17572), 15357 states have call successors, (17572) [2023-12-21 09:52:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94258 states to 94258 states and 159302 transitions. [2023-12-21 09:52:21,889 INFO L78 Accepts]: Start accepts. Automaton has 94258 states and 159302 transitions. Word has length 119 [2023-12-21 09:52:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:52:21,889 INFO L495 AbstractCegarLoop]: Abstraction has 94258 states and 159302 transitions. [2023-12-21 09:52:21,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:52:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 94258 states and 159302 transitions. [2023-12-21 09:52:21,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 09:52:21,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:52:21,921 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-12-21 09:52:21,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 09:52:21,921 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:52:21,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:52:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1351893831, now seen corresponding path program 1 times [2023-12-21 09:52:21,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:52:21,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902060882] [2023-12-21 09:52:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:52:21,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:52:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:52:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:52:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:52:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:52:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:52:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:52:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:52:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:52:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:52:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:52:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:52:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:52:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 09:52:22,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:52:22,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902060882] [2023-12-21 09:52:22,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902060882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:52:22,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:52:22,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 09:52:22,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224314535] [2023-12-21 09:52:22,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:52:22,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 09:52:22,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:52:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 09:52:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:52:22,111 INFO L87 Difference]: Start difference. First operand 94258 states and 159302 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 09:52:26,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:52:26,515 INFO L93 Difference]: Finished difference Result 94789 states and 163415 transitions. [2023-12-21 09:52:26,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 09:52:26,516 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 120 [2023-12-21 09:52:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:52:26,816 INFO L225 Difference]: With dead ends: 94789 [2023-12-21 09:52:26,817 INFO L226 Difference]: Without dead ends: 94555 [2023-12-21 09:52:26,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=305, Invalid=1101, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 09:52:26,855 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1550 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 3497 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 3843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 3497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:52:26,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 1533 Invalid, 3843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 3497 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 09:52:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94555 states. [2023-12-21 09:52:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94555 to 94256. [2023-12-21 09:52:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94256 states, 78833 states have (on average 1.6029581520429261) internal successors, (126366), 78845 states have internal predecessors, (126366), 15361 states have call successors, (15361), 45 states have call predecessors, (15361), 61 states have return successors, (17570), 15365 states have call predecessors, (17570), 15357 states have call successors, (17570) [2023-12-21 09:52:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94256 states to 94256 states and 159297 transitions. [2023-12-21 09:52:30,079 INFO L78 Accepts]: Start accepts. Automaton has 94256 states and 159297 transitions. Word has length 120 [2023-12-21 09:52:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:52:30,079 INFO L495 AbstractCegarLoop]: Abstraction has 94256 states and 159297 transitions. [2023-12-21 09:52:30,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 09:52:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 94256 states and 159297 transitions. [2023-12-21 09:52:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 09:52:30,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:52:30,108 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-12-21 09:52:30,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 09:52:30,108 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:52:30,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:52:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1237958465, now seen corresponding path program 2 times [2023-12-21 09:52:30,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:52:30,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824996929] [2023-12-21 09:52:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:52:30,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:52:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:52:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:52:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:52:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:52:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:52:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:52:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:52:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:52:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:52:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:52:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:52:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:52:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 09:52:30,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:52:30,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824996929] [2023-12-21 09:52:30,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824996929] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:52:30,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380945708] [2023-12-21 09:52:30,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 09:52:30,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:52:30,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:52:30,253 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:52:30,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 09:52:30,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 09:52:30,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 09:52:30,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 09:52:30,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:52:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 09:52:30,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:52:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 09:52:30,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380945708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:52:30,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:52:30,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2023-12-21 09:52:30,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440680936] [2023-12-21 09:52:30,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:52:30,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 09:52:30,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:52:30,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 09:52:30,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2023-12-21 09:52:30,936 INFO L87 Difference]: Start difference. First operand 94256 states and 159297 transitions. Second operand has 27 states, 26 states have (on average 8.576923076923077) internal successors, (223), 19 states have internal predecessors, (223), 7 states have call successors, (40), 11 states have call predecessors, (40), 9 states have return successors, (35), 8 states have call predecessors, (35), 7 states have call successors, (35) [2023-12-21 09:52:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:52:42,312 INFO L93 Difference]: Finished difference Result 282789 states and 494396 transitions. [2023-12-21 09:52:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-21 09:52:42,314 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 8.576923076923077) internal successors, (223), 19 states have internal predecessors, (223), 7 states have call successors, (40), 11 states have call predecessors, (40), 9 states have return successors, (35), 8 states have call predecessors, (35), 7 states have call successors, (35) Word has length 120 [2023-12-21 09:52:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:52:43,564 INFO L225 Difference]: With dead ends: 282789 [2023-12-21 09:52:43,564 INFO L226 Difference]: Without dead ends: 282438 [2023-12-21 09:52:43,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1153, Invalid=5987, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 09:52:43,691 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 3387 mSDsluCounter, 4462 mSDsCounter, 0 mSdLazyCounter, 8102 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3405 SdHoareTripleChecker+Valid, 4714 SdHoareTripleChecker+Invalid, 8960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 8102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-21 09:52:43,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3405 Valid, 4714 Invalid, 8960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 8102 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-21 09:52:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282438 states. [2023-12-21 09:52:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282438 to 188299. [2023-12-21 09:52:52,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188299 states, 157497 states have (on average 1.6030591058877313) internal successors, (252477), 157519 states have internal predecessors, (252477), 30696 states have call successors, (30696), 80 states have call predecessors, (30696), 105 states have return successors, (37281), 30699 states have call predecessors, (37281), 30690 states have call successors, (37281) [2023-12-21 09:52:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188299 states to 188299 states and 320454 transitions. [2023-12-21 09:52:53,332 INFO L78 Accepts]: Start accepts. Automaton has 188299 states and 320454 transitions. Word has length 120 [2023-12-21 09:52:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:52:53,332 INFO L495 AbstractCegarLoop]: Abstraction has 188299 states and 320454 transitions. [2023-12-21 09:52:53,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 8.576923076923077) internal successors, (223), 19 states have internal predecessors, (223), 7 states have call successors, (40), 11 states have call predecessors, (40), 9 states have return successors, (35), 8 states have call predecessors, (35), 7 states have call successors, (35) [2023-12-21 09:52:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 188299 states and 320454 transitions. [2023-12-21 09:52:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-21 09:52:53,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:52:53,929 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:52:53,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 09:52:54,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:52:54,138 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:52:54,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:52:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash 703619440, now seen corresponding path program 1 times [2023-12-21 09:52:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:52:54,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787146557] [2023-12-21 09:52:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:52:54,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:52:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:52:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:52:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:52:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:52:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:52:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:52:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:52:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:52:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-21 09:52:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 09:52:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:52:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 09:52:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 09:52:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 09:52:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-21 09:52:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 09:52:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 09:52:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 09:52:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 09:52:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:52:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-21 09:52:54,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:52:54,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787146557] [2023-12-21 09:52:54,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787146557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:52:54,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:52:54,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 09:52:54,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98077601] [2023-12-21 09:52:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:52:54,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 09:52:54,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:52:54,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 09:52:54,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 09:52:54,421 INFO L87 Difference]: Start difference. First operand 188299 states and 320454 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:53:01,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:53:01,161 INFO L93 Difference]: Finished difference Result 189497 states and 328845 transitions. [2023-12-21 09:53:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 09:53:01,162 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 164 [2023-12-21 09:53:01,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:53:02,091 INFO L225 Difference]: With dead ends: 189497 [2023-12-21 09:53:02,091 INFO L226 Difference]: Without dead ends: 189003 [2023-12-21 09:53:02,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2023-12-21 09:53:02,158 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1219 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 09:53:02,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 983 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 2617 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 09:53:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189003 states. [2023-12-21 09:53:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189003 to 188299. [2023-12-21 09:53:09,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188299 states, 157497 states have (on average 1.6030210099239985) internal successors, (252471), 157519 states have internal predecessors, (252471), 30696 states have call successors, (30696), 80 states have call predecessors, (30696), 105 states have return successors, (37281), 30699 states have call predecessors, (37281), 30690 states have call successors, (37281) [2023-12-21 09:53:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188299 states to 188299 states and 320448 transitions. [2023-12-21 09:53:10,865 INFO L78 Accepts]: Start accepts. Automaton has 188299 states and 320448 transitions. Word has length 164 [2023-12-21 09:53:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:53:10,867 INFO L495 AbstractCegarLoop]: Abstraction has 188299 states and 320448 transitions. [2023-12-21 09:53:10,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:53:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 188299 states and 320448 transitions. [2023-12-21 09:53:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 09:53:11,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:53:11,569 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:53:11,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 09:53:11,570 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:53:11,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:53:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash -35384944, now seen corresponding path program 1 times [2023-12-21 09:53:11,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:53:11,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220249951] [2023-12-21 09:53:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:53:11,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:53:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:11,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:53:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:11,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:53:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:11,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:53:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:11,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:53:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:53:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:53:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:53:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:53:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-21 09:53:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 09:53:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:53:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 09:53:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 09:53:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 09:53:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-21 09:53:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:53:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 09:53:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 09:53:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 09:53:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 09:53:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 09:53:12,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:53:12,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220249951] [2023-12-21 09:53:12,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220249951] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:53:12,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532641161] [2023-12-21 09:53:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:53:12,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:53:12,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:53:12,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:53:12,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 09:53:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:53:12,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 09:53:12,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:53:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:53:12,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:53:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-21 09:53:13,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532641161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:53:13,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:53:13,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 9, 10] total 37 [2023-12-21 09:53:13,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739575209] [2023-12-21 09:53:13,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:53:13,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 09:53:13,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:53:13,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 09:53:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 09:53:13,716 INFO L87 Difference]: Start difference. First operand 188299 states and 320448 transitions. Second operand has 37 states, 35 states have (on average 7.6571428571428575) internal successors, (268), 29 states have internal predecessors, (268), 11 states have call successors, (54), 10 states have call predecessors, (54), 15 states have return successors, (52), 14 states have call predecessors, (52), 11 states have call successors, (52)