/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_spec0_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 09:28:16,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 09:28:16,847 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 09:28:16,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 09:28:16,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 09:28:16,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 09:28:16,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 09:28:16,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 09:28:16,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 09:28:16,875 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 09:28:16,875 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 09:28:16,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 09:28:16,876 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 09:28:16,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 09:28:16,877 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 09:28:16,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 09:28:16,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 09:28:16,878 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 09:28:16,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 09:28:16,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 09:28:16,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 09:28:16,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 09:28:16,878 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 09:28:16,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 09:28:16,879 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 09:28:16,879 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 09:28:16,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 09:28:16,879 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 09:28:16,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 09:28:16,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 09:28:16,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 09:28:16,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 09:28:16,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:28:16,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 09:28:16,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 09:28:16,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 09:28:16,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 09:28:16,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 09:28:16,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 09:28:16,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 09:28:16,881 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 09:28:16,882 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 09:28:16,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 09:28:16,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 09:28:17,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 09:28:17,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 09:28:17,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 09:28:17,053 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 09:28:17,053 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 09:28:17,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product11.cil.c [2023-12-21 09:28:18,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 09:28:18,298 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 09:28:18,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product11.cil.c [2023-12-21 09:28:18,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2340702f7/d43ba66d1bcf419f8cae2e4fbd611a7c/FLAG05f0da823 [2023-12-21 09:28:18,337 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2340702f7/d43ba66d1bcf419f8cae2e4fbd611a7c [2023-12-21 09:28:18,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 09:28:18,340 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 09:28:18,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 09:28:18,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 09:28:18,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 09:28:18,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:18,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e473aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18, skipping insertion in model container [2023-12-21 09:28:18,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:18,394 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 09:28:18,791 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_spec0_product11.cil.c[59717,59730] [2023-12-21 09:28:18,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:28:18,817 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 09:28:18,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-12-21 09:28:18,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [460] [2023-12-21 09:28:18,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [509] [2023-12-21 09:28:18,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [576] [2023-12-21 09:28:18,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptForward_spec.i","") [876] [2023-12-21 09:28:18,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [896] [2023-12-21 09:28:18,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1262] [2023-12-21 09:28:18,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1478] [2023-12-21 09:28:18,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1671] [2023-12-21 09:28:18,827 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2740] [2023-12-21 09:28:18,827 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2749] [2023-12-21 09:28:18,914 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_spec0_product11.cil.c[59717,59730] [2023-12-21 09:28:18,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:28:18,940 INFO L206 MainTranslator]: Completed translation [2023-12-21 09:28:18,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18 WrapperNode [2023-12-21 09:28:18,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 09:28:18,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 09:28:18,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 09:28:18,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 09:28:18,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:18,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,057 INFO L138 Inliner]: procedures = 121, calls = 162, calls flagged for inlining = 48, calls inlined = 43, statements flattened = 784 [2023-12-21 09:28:19,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 09:28:19,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 09:28:19,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 09:28:19,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 09:28:19,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,093 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 09:28:19,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 09:28:19,137 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 09:28:19,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 09:28:19,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 09:28:19,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (1/1) ... [2023-12-21 09:28:19,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:28:19,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:28:19,165 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 09:28:19,167 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 09:28:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 09:28:19,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 09:28:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 09:28:19,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 09:28:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-21 09:28:19,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-21 09:28:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 09:28:19,186 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 09:28:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 09:28:19,186 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 09:28:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 09:28:19,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 09:28:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 09:28:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 09:28:19,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 09:28:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 09:28:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 09:28:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 09:28:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 09:28:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 09:28:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 09:28:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 09:28:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 09:28:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-21 09:28:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-21 09:28:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 09:28:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 09:28:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 09:28:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 09:28:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 09:28:19,188 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 09:28:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 09:28:19,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 09:28:19,333 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 09:28:19,334 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 09:28:19,784 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 09:28:19,841 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 09:28:19,842 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 09:28:19,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:28:19 BoogieIcfgContainer [2023-12-21 09:28:19,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 09:28:19,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 09:28:19,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 09:28:19,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 09:28:19,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:28:18" (1/3) ... [2023-12-21 09:28:19,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c96d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:28:19, skipping insertion in model container [2023-12-21 09:28:19,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:28:18" (2/3) ... [2023-12-21 09:28:19,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c96d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:28:19, skipping insertion in model container [2023-12-21 09:28:19,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:28:19" (3/3) ... [2023-12-21 09:28:19,848 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product11.cil.c [2023-12-21 09:28:19,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 09:28:19,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 09:28:19,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 09:28:19,908 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;@1e8b9311, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 09:28:19,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 09:28:19,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 161 states have (on average 1.608695652173913) internal successors, (259), 163 states have internal predecessors, (259), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-21 09:28:19,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 09:28:19,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:19,942 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] [2023-12-21 09:28:19,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:19,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:19,946 INFO L85 PathProgramCache]: Analyzing trace with hash 683107094, now seen corresponding path program 1 times [2023-12-21 09:28:19,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:19,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602169167] [2023-12-21 09:28:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:19,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:28:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:28:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:28:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 09:28:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 09:28:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:28:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:28:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:28:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:28:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,513 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 09:28:20,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602169167] [2023-12-21 09:28:20,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602169167] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:28:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752580478] [2023-12-21 09:28:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:20,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:28:20,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:28:20,517 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 09:28:20,544 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 09:28:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:20,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 09:28:20,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:28:20,782 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 09:28:20,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:28:20,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752580478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:20,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:28:20,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-21 09:28:20,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354479352] [2023-12-21 09:28:20,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:20,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 09:28:20,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 09:28:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:28:20,818 INFO L87 Difference]: Start difference. First operand has 211 states, 161 states have (on average 1.608695652173913) internal successors, (259), 163 states have internal predecessors, (259), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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 09:28:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:20,891 INFO L93 Difference]: Finished difference Result 277 states and 421 transitions. [2023-12-21 09:28:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 09:28:20,893 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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 84 [2023-12-21 09:28:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:20,901 INFO L225 Difference]: With dead ends: 277 [2023-12-21 09:28:20,901 INFO L226 Difference]: Without dead ends: 208 [2023-12-21 09:28:20,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 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 09:28:20,906 INFO L413 NwaCegarLoop]: 312 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, 312 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 09:28:20,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:28:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-21 09:28:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-12-21 09:28:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 159 states have (on average 1.5849056603773586) internal successors, (252), 160 states have internal predecessors, (252), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 09:28:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 321 transitions. [2023-12-21 09:28:20,942 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 321 transitions. Word has length 84 [2023-12-21 09:28:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:20,944 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 321 transitions. [2023-12-21 09:28:20,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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 09:28:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 321 transitions. [2023-12-21 09:28:20,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 09:28:20,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:20,947 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] [2023-12-21 09:28:20,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 09:28:21,150 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 09:28:21,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:21,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:21,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1938388787, now seen corresponding path program 1 times [2023-12-21 09:28:21,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:21,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302866245] [2023-12-21 09:28:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:21,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:28:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:28:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:28:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 09:28:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 09:28:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 09:28:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:28:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:28:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:28:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,407 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 09:28:21,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302866245] [2023-12-21 09:28:21,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302866245] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:28:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035992334] [2023-12-21 09:28:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:21,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:28:21,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:28:21,410 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 09:28:21,416 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 09:28:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:21,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 09:28:21,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:28:21,674 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 09:28:21,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:28:21,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035992334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:21,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:28:21,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:28:21,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744192225] [2023-12-21 09:28:21,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:21,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:28:21,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:21,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:28:21,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:28:21,677 INFO L87 Difference]: Start difference. First operand 208 states and 321 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 09:28:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:21,724 INFO L93 Difference]: Finished difference Result 273 states and 408 transitions. [2023-12-21 09:28:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:28:21,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 85 [2023-12-21 09:28:21,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:21,730 INFO L225 Difference]: With dead ends: 273 [2023-12-21 09:28:21,730 INFO L226 Difference]: Without dead ends: 210 [2023-12-21 09:28:21,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 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 09:28:21,732 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 0 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 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 09:28:21,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:28:21,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-21 09:28:21,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2023-12-21 09:28:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 161 states have (on average 1.5776397515527951) internal successors, (254), 162 states have internal predecessors, (254), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 09:28:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 323 transitions. [2023-12-21 09:28:21,745 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 323 transitions. Word has length 85 [2023-12-21 09:28:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:21,745 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 323 transitions. [2023-12-21 09:28:21,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 09:28:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 323 transitions. [2023-12-21 09:28:21,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 09:28:21,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:21,748 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] [2023-12-21 09:28:21,758 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 09:28:21,954 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 09:28:21,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:21,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:21,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1618477745, now seen corresponding path program 1 times [2023-12-21 09:28:21,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:21,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649704349] [2023-12-21 09:28:21,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:21,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:28:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:28:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:28:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 09:28:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:28:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:28:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:28:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:28:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:28:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,163 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 09:28:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649704349] [2023-12-21 09:28:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649704349] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:28:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084116172] [2023-12-21 09:28:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:22,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:28:22,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:28:22,178 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 09:28:22,188 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 09:28:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:28:22,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:28:22,402 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 09:28:22,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:28:22,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084116172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:22,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:28:22,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:28:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807563001] [2023-12-21 09:28:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:22,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:28:22,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:28:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:28:22,404 INFO L87 Difference]: Start difference. First operand 210 states and 323 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 09:28:22,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:22,443 INFO L93 Difference]: Finished difference Result 450 states and 705 transitions. [2023-12-21 09:28:22,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:28:22,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 90 [2023-12-21 09:28:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:22,448 INFO L225 Difference]: With dead ends: 450 [2023-12-21 09:28:22,448 INFO L226 Difference]: Without dead ends: 262 [2023-12-21 09:28:22,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 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 09:28:22,450 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 102 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:22,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 587 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:28:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-21 09:28:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 257. [2023-12-21 09:28:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 197 states have (on average 1.5939086294416243) internal successors, (314), 198 states have internal predecessors, (314), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-21 09:28:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 405 transitions. [2023-12-21 09:28:22,463 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 405 transitions. Word has length 90 [2023-12-21 09:28:22,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:22,463 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 405 transitions. [2023-12-21 09:28:22,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 09:28:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 405 transitions. [2023-12-21 09:28:22,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 09:28:22,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:22,466 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] [2023-12-21 09:28:22,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 09:28:22,674 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 09:28:22,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:22,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:22,675 INFO L85 PathProgramCache]: Analyzing trace with hash -268241886, now seen corresponding path program 1 times [2023-12-21 09:28:22,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:22,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644623686] [2023-12-21 09:28:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:22,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:28:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:28:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:28:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 09:28:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 09:28:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:28:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:28:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:28:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:28:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:22,834 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 09:28:22,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:22,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644623686] [2023-12-21 09:28:22,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644623686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:28:22,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899636523] [2023-12-21 09:28:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:22,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:28:22,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:28:22,837 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 09:28:22,862 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 09:28:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 09:28:23,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:28:23,130 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 09:28:23,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:28:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899636523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:23,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:28:23,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 09:28:23,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769067099] [2023-12-21 09:28:23,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:23,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:28:23,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:23,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:28:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:28:23,133 INFO L87 Difference]: Start difference. First operand 257 states and 405 transitions. Second operand has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 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 09:28:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:23,211 INFO L93 Difference]: Finished difference Result 509 states and 804 transitions. [2023-12-21 09:28:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:28:23,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 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 91 [2023-12-21 09:28:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:23,214 INFO L225 Difference]: With dead ends: 509 [2023-12-21 09:28:23,214 INFO L226 Difference]: Without dead ends: 259 [2023-12-21 09:28:23,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 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 09:28:23,219 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 8 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1189 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 09:28:23,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1189 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:28:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-21 09:28:23,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2023-12-21 09:28:23,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 198 states have (on average 1.5909090909090908) internal successors, (315), 200 states have internal predecessors, (315), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) [2023-12-21 09:28:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 408 transitions. [2023-12-21 09:28:23,241 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 408 transitions. Word has length 91 [2023-12-21 09:28:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:23,241 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 408 transitions. [2023-12-21 09:28:23,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 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 09:28:23,243 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 408 transitions. [2023-12-21 09:28:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 09:28:23,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:23,245 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] [2023-12-21 09:28:23,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 09:28:23,451 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 09:28:23,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:23,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1208340617, now seen corresponding path program 1 times [2023-12-21 09:28:23,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:23,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389348296] [2023-12-21 09:28:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:23,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 09:28:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 09:28:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 09:28:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:28:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:28:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:28:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:28:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:28:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,606 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 09:28:23,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389348296] [2023-12-21 09:28:23,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389348296] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:28:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068649404] [2023-12-21 09:28:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:23,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:28:23,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:28:23,607 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 09:28:23,609 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 09:28:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:23,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 09:28:23,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:28:23,836 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 09:28:23,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:28:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068649404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:23,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:28:23,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-21 09:28:23,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433728849] [2023-12-21 09:28:23,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:23,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:28:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:23,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:28:23,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:28:23,837 INFO L87 Difference]: Start difference. First operand 259 states and 408 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 09:28:23,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:23,905 INFO L93 Difference]: Finished difference Result 511 states and 809 transitions. [2023-12-21 09:28:23,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:28:23,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 92 [2023-12-21 09:28:23,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:23,907 INFO L225 Difference]: With dead ends: 511 [2023-12-21 09:28:23,907 INFO L226 Difference]: Without dead ends: 261 [2023-12-21 09:28:23,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 108 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 09:28:23,908 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 8 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1175 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 09:28:23,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1175 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:28:23,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-21 09:28:23,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-12-21 09:28:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 199 states have (on average 1.5879396984924623) internal successors, (316), 202 states have internal predecessors, (316), 46 states have call successors, (46), 13 states have call predecessors, (46), 15 states have return successors, (52), 45 states have call predecessors, (52), 45 states have call successors, (52) [2023-12-21 09:28:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 414 transitions. [2023-12-21 09:28:23,917 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 414 transitions. Word has length 92 [2023-12-21 09:28:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:23,917 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 414 transitions. [2023-12-21 09:28:23,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 09:28:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 414 transitions. [2023-12-21 09:28:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 09:28:23,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:23,919 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] [2023-12-21 09:28:23,927 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 09:28:24,125 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 09:28:24,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:24,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:24,126 INFO L85 PathProgramCache]: Analyzing trace with hash 63213040, now seen corresponding path program 1 times [2023-12-21 09:28:24,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:24,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233292922] [2023-12-21 09:28:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:24,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 09:28:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 09:28:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:28:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:28:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:28:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:28:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:28:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:24,261 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 09:28:24,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:24,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233292922] [2023-12-21 09:28:24,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233292922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:24,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:24,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:28:24,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383284] [2023-12-21 09:28:24,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:24,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:28:24,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:24,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:28:24,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:28:24,263 INFO L87 Difference]: Start difference. First operand 261 states and 414 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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 09:28:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:25,301 INFO L93 Difference]: Finished difference Result 592 states and 943 transitions. [2023-12-21 09:28:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:28:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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 93 [2023-12-21 09:28:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:25,304 INFO L225 Difference]: With dead ends: 592 [2023-12-21 09:28:25,304 INFO L226 Difference]: Without dead ends: 350 [2023-12-21 09:28:25,305 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 09:28:25,305 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 557 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:25,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 962 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:28:25,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-21 09:28:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 261. [2023-12-21 09:28:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 199 states have (on average 1.5879396984924623) internal successors, (316), 202 states have internal predecessors, (316), 46 states have call successors, (46), 13 states have call predecessors, (46), 15 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2023-12-21 09:28:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 413 transitions. [2023-12-21 09:28:25,321 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 413 transitions. Word has length 93 [2023-12-21 09:28:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:25,321 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 413 transitions. [2023-12-21 09:28:25,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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 09:28:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 413 transitions. [2023-12-21 09:28:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 09:28:25,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:25,322 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] [2023-12-21 09:28:25,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 09:28:25,323 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:25,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash 285584163, now seen corresponding path program 2 times [2023-12-21 09:28:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100975098] [2023-12-21 09:28:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 09:28:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 09:28:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:28:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:28:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:28:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:28:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:28:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:25,475 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 09:28:25,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:25,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100975098] [2023-12-21 09:28:25,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100975098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:25,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:25,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:28:25,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936730965] [2023-12-21 09:28:25,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:25,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:28:25,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:25,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:28:25,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:28:25,476 INFO L87 Difference]: Start difference. First operand 261 states and 413 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 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 09:28:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:26,506 INFO L93 Difference]: Finished difference Result 594 states and 946 transitions. [2023-12-21 09:28:26,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:28:26,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 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 94 [2023-12-21 09:28:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:26,509 INFO L225 Difference]: With dead ends: 594 [2023-12-21 09:28:26,509 INFO L226 Difference]: Without dead ends: 352 [2023-12-21 09:28:26,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:28:26,510 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 553 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:26,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 962 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:28:26,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-21 09:28:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 263. [2023-12-21 09:28:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 200 states have (on average 1.585) internal successors, (317), 204 states have internal predecessors, (317), 46 states have call successors, (46), 13 states have call predecessors, (46), 16 states have return successors, (53), 45 states have call predecessors, (53), 45 states have call successors, (53) [2023-12-21 09:28:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 416 transitions. [2023-12-21 09:28:26,522 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 416 transitions. Word has length 94 [2023-12-21 09:28:26,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:26,523 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 416 transitions. [2023-12-21 09:28:26,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 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 09:28:26,523 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 416 transitions. [2023-12-21 09:28:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 09:28:26,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:26,524 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] [2023-12-21 09:28:26,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 09:28:26,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:26,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1840630165, now seen corresponding path program 1 times [2023-12-21 09:28:26,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:26,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936142276] [2023-12-21 09:28:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:28:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 09:28:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:28:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:28:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:28:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:28:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:26,674 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 09:28:26,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:26,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936142276] [2023-12-21 09:28:26,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936142276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:26,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:26,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:28:26,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099327036] [2023-12-21 09:28:26,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:26,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:28:26,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:26,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:28:26,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:28:26,675 INFO L87 Difference]: Start difference. First operand 263 states and 416 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 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 09:28:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:28,001 INFO L93 Difference]: Finished difference Result 592 states and 941 transitions. [2023-12-21 09:28:28,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:28:28,002 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 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 95 [2023-12-21 09:28:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:28,004 INFO L225 Difference]: With dead ends: 592 [2023-12-21 09:28:28,004 INFO L226 Difference]: Without dead ends: 352 [2023-12-21 09:28:28,005 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 09:28:28,005 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 564 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:28,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1330 Invalid, 2679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2477 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:28:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-21 09:28:28,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 263. [2023-12-21 09:28:28,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 200 states have (on average 1.585) internal successors, (317), 204 states have internal predecessors, (317), 46 states have call successors, (46), 13 states have call predecessors, (46), 16 states have return successors, (52), 45 states have call predecessors, (52), 45 states have call successors, (52) [2023-12-21 09:28:28,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 415 transitions. [2023-12-21 09:28:28,017 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 415 transitions. Word has length 95 [2023-12-21 09:28:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:28,017 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 415 transitions. [2023-12-21 09:28:28,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 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 09:28:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 415 transitions. [2023-12-21 09:28:28,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 09:28:28,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:28,019 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] [2023-12-21 09:28:28,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 09:28:28,019 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:28,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash -252240376, now seen corresponding path program 2 times [2023-12-21 09:28:28,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:28,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140465745] [2023-12-21 09:28:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:28,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 09:28:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 09:28:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:28:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:28:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:28:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:28:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:28,185 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 09:28:28,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:28,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140465745] [2023-12-21 09:28:28,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140465745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:28,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:28,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:28:28,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529629489] [2023-12-21 09:28:28,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:28,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:28:28,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:28,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:28:28,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:28:28,187 INFO L87 Difference]: Start difference. First operand 263 states and 415 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 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 09:28:29,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:29,531 INFO L93 Difference]: Finished difference Result 594 states and 947 transitions. [2023-12-21 09:28:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:28:29,531 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 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 96 [2023-12-21 09:28:29,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:29,533 INFO L225 Difference]: With dead ends: 594 [2023-12-21 09:28:29,533 INFO L226 Difference]: Without dead ends: 354 [2023-12-21 09:28:29,534 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 09:28:29,536 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 556 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:29,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1332 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:28:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-21 09:28:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 265. [2023-12-21 09:28:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 201 states have (on average 1.5820895522388059) internal successors, (318), 206 states have internal predecessors, (318), 46 states have call successors, (46), 13 states have call predecessors, (46), 17 states have return successors, (57), 45 states have call predecessors, (57), 45 states have call successors, (57) [2023-12-21 09:28:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 421 transitions. [2023-12-21 09:28:29,580 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 421 transitions. Word has length 96 [2023-12-21 09:28:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:29,581 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 421 transitions. [2023-12-21 09:28:29,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 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 09:28:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 421 transitions. [2023-12-21 09:28:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 09:28:29,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:29,585 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 09:28:29,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 09:28:29,585 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:29,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:29,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1849391878, now seen corresponding path program 1 times [2023-12-21 09:28:29,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:29,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499913100] [2023-12-21 09:28:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:29,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:28:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 09:28:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:28:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:28:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:28:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:28:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,695 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 09:28:29,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:29,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499913100] [2023-12-21 09:28:29,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499913100] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:28:29,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869699530] [2023-12-21 09:28:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:29,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:28:29,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:28:29,710 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 09:28:29,736 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 09:28:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:29,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:28:29,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:28:29,919 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 09:28:29,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:28:29,967 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 09:28:29,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869699530] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:28:29,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:28:29,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-12-21 09:28:29,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930043769] [2023-12-21 09:28:29,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:28:29,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 09:28:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:29,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 09:28:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 09:28:29,968 INFO L87 Difference]: Start difference. First operand 265 states and 421 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:28:30,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:30,890 INFO L93 Difference]: Finished difference Result 747 states and 1259 transitions. [2023-12-21 09:28:30,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 09:28:30,890 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2023-12-21 09:28:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:30,893 INFO L225 Difference]: With dead ends: 747 [2023-12-21 09:28:30,893 INFO L226 Difference]: Without dead ends: 684 [2023-12-21 09:28:30,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:28:30,894 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1087 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:30,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 1102 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:28:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-12-21 09:28:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 580. [2023-12-21 09:28:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 452 states have (on average 1.6438053097345133) internal successors, (743), 457 states have internal predecessors, (743), 110 states have call successors, (110), 13 states have call predecessors, (110), 17 states have return successors, (131), 109 states have call predecessors, (131), 109 states have call successors, (131) [2023-12-21 09:28:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 984 transitions. [2023-12-21 09:28:30,918 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 984 transitions. Word has length 97 [2023-12-21 09:28:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:30,918 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 984 transitions. [2023-12-21 09:28:30,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (30), 6 states have call predecessors, (30), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:28:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 984 transitions. [2023-12-21 09:28:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 09:28:30,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:30,921 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] [2023-12-21 09:28:30,930 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 09:28:31,127 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 09:28:31,128 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:31,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:31,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1648352279, now seen corresponding path program 1 times [2023-12-21 09:28:31,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:31,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031347033] [2023-12-21 09:28:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:31,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:28:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:28:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:28:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:28:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:28:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:28:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:31,208 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 09:28:31,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:31,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031347033] [2023-12-21 09:28:31,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031347033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:31,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:31,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:28:31,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085935075] [2023-12-21 09:28:31,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:31,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:28:31,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:28:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:28:31,210 INFO L87 Difference]: Start difference. First operand 580 states and 984 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 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 09:28:32,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:32,013 INFO L93 Difference]: Finished difference Result 1506 states and 2608 transitions. [2023-12-21 09:28:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:28:32,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 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 103 [2023-12-21 09:28:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:32,019 INFO L225 Difference]: With dead ends: 1506 [2023-12-21 09:28:32,019 INFO L226 Difference]: Without dead ends: 986 [2023-12-21 09:28:32,022 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 09:28:32,023 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 647 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:32,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 746 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:28:32,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2023-12-21 09:28:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 892. [2023-12-21 09:28:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 700 states have (on average 1.65) internal successors, (1155), 705 states have internal predecessors, (1155), 174 states have call successors, (174), 13 states have call predecessors, (174), 17 states have return successors, (205), 173 states have call predecessors, (205), 173 states have call successors, (205) [2023-12-21 09:28:32,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1534 transitions. [2023-12-21 09:28:32,052 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1534 transitions. Word has length 103 [2023-12-21 09:28:32,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:32,053 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1534 transitions. [2023-12-21 09:28:32,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 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 09:28:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1534 transitions. [2023-12-21 09:28:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 09:28:32,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:32,056 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] [2023-12-21 09:28:32,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 09:28:32,057 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:32,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash 929198233, now seen corresponding path program 1 times [2023-12-21 09:28:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:32,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974680076] [2023-12-21 09:28:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:32,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:28:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:28:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:28:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:28:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:28:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:28:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:32,130 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 09:28:32,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:32,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974680076] [2023-12-21 09:28:32,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974680076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:32,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:32,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:28:32,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510312193] [2023-12-21 09:28:32,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:32,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:28:32,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:32,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:28:32,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:28:32,131 INFO L87 Difference]: Start difference. First operand 892 states and 1534 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 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 09:28:32,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:32,959 INFO L93 Difference]: Finished difference Result 2255 states and 3926 transitions. [2023-12-21 09:28:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:28:32,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 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 104 [2023-12-21 09:28:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:32,965 INFO L225 Difference]: With dead ends: 2255 [2023-12-21 09:28:32,965 INFO L226 Difference]: Without dead ends: 1473 [2023-12-21 09:28:32,967 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 09:28:32,967 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 645 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:32,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 709 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:28:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2023-12-21 09:28:32,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1379. [2023-12-21 09:28:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1092 states have (on average 1.6529304029304028) internal successors, (1805), 1097 states have internal predecessors, (1805), 269 states have call successors, (269), 13 states have call predecessors, (269), 17 states have return successors, (300), 268 states have call predecessors, (300), 268 states have call successors, (300) [2023-12-21 09:28:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2374 transitions. [2023-12-21 09:28:33,005 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2374 transitions. Word has length 104 [2023-12-21 09:28:33,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:33,005 INFO L495 AbstractCegarLoop]: Abstraction has 1379 states and 2374 transitions. [2023-12-21 09:28:33,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 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 09:28:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2374 transitions. [2023-12-21 09:28:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 09:28:33,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:33,010 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 09:28:33,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 09:28:33,010 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:33,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash -482288583, now seen corresponding path program 1 times [2023-12-21 09:28:33,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:33,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645910425] [2023-12-21 09:28:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:28:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:28:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:28:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:28:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:28:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:28:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:33,079 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 09:28:33,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:33,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645910425] [2023-12-21 09:28:33,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645910425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:33,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:33,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:28:33,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535091141] [2023-12-21 09:28:33,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:33,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:28:33,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:33,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:28:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:28:33,081 INFO L87 Difference]: Start difference. First operand 1379 states and 2374 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 09:28:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:33,903 INFO L93 Difference]: Finished difference Result 3357 states and 5885 transitions. [2023-12-21 09:28:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:28:33,903 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 09:28:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:33,911 INFO L225 Difference]: With dead ends: 3357 [2023-12-21 09:28:33,911 INFO L226 Difference]: Without dead ends: 2208 [2023-12-21 09:28:33,914 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 09:28:33,915 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 641 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:33,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 708 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:28:33,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2023-12-21 09:28:33,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2114. [2023-12-21 09:28:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 1704 states have (on average 1.6561032863849765) internal successors, (2822), 1709 states have internal predecessors, (2822), 392 states have call successors, (392), 13 states have call predecessors, (392), 17 states have return successors, (439), 391 states have call predecessors, (439), 391 states have call successors, (439) [2023-12-21 09:28:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3653 transitions. [2023-12-21 09:28:33,980 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3653 transitions. Word has length 105 [2023-12-21 09:28:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:33,980 INFO L495 AbstractCegarLoop]: Abstraction has 2114 states and 3653 transitions. [2023-12-21 09:28:33,981 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 09:28:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3653 transitions. [2023-12-21 09:28:33,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 09:28:33,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:33,987 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 09:28:33,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 09:28:33,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:33,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1998589894, now seen corresponding path program 1 times [2023-12-21 09:28:33,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:33,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170233052] [2023-12-21 09:28:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:33,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:28:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:28:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:28:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:28:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:28:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:28:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:34,068 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 09:28:34,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:34,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170233052] [2023-12-21 09:28:34,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170233052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:34,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:34,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:28:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86751677] [2023-12-21 09:28:34,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:34,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:28:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:34,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:28:34,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:28:34,070 INFO L87 Difference]: Start difference. First operand 2114 states and 3653 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 09:28:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:34,890 INFO L93 Difference]: Finished difference Result 5067 states and 8935 transitions. [2023-12-21 09:28:34,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:28:34,890 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 09:28:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:34,905 INFO L225 Difference]: With dead ends: 5067 [2023-12-21 09:28:34,905 INFO L226 Difference]: Without dead ends: 3380 [2023-12-21 09:28:34,910 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 09:28:34,911 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 640 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:34,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 707 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:28:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2023-12-21 09:28:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3286. [2023-12-21 09:28:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 2697 states have (on average 1.6581386725991842) internal successors, (4472), 2702 states have internal predecessors, (4472), 571 states have call successors, (571), 13 states have call predecessors, (571), 17 states have return successors, (644), 570 states have call predecessors, (644), 570 states have call successors, (644) [2023-12-21 09:28:35,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 5687 transitions. [2023-12-21 09:28:35,024 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 5687 transitions. Word has length 106 [2023-12-21 09:28:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:35,025 INFO L495 AbstractCegarLoop]: Abstraction has 3286 states and 5687 transitions. [2023-12-21 09:28:35,025 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 09:28:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 5687 transitions. [2023-12-21 09:28:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 09:28:35,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:35,032 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 09:28:35,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 09:28:35,032 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:35,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:35,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1471501429, now seen corresponding path program 1 times [2023-12-21 09:28:35,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:35,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080015749] [2023-12-21 09:28:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:35,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:28:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:28:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:28:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:28:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:28:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:28:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:35,094 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 09:28:35,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:35,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080015749] [2023-12-21 09:28:35,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080015749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:35,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:35,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:28:35,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494907027] [2023-12-21 09:28:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:35,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:28:35,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:35,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:28:35,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:28:35,097 INFO L87 Difference]: Start difference. First operand 3286 states and 5687 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 09:28:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:35,912 INFO L93 Difference]: Finished difference Result 7922 states and 13989 transitions. [2023-12-21 09:28:35,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:28:35,913 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 09:28:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:35,933 INFO L225 Difference]: With dead ends: 7922 [2023-12-21 09:28:35,933 INFO L226 Difference]: Without dead ends: 5350 [2023-12-21 09:28:35,939 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 09:28:35,939 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 638 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:35,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 738 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:28:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2023-12-21 09:28:36,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5256. [2023-12-21 09:28:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 4291 states have (on average 1.6460032626427405) internal successors, (7063), 4296 states have internal predecessors, (7063), 947 states have call successors, (947), 13 states have call predecessors, (947), 17 states have return successors, (1064), 946 states have call predecessors, (1064), 946 states have call successors, (1064) [2023-12-21 09:28:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 9074 transitions. [2023-12-21 09:28:36,101 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 9074 transitions. Word has length 107 [2023-12-21 09:28:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:36,101 INFO L495 AbstractCegarLoop]: Abstraction has 5256 states and 9074 transitions. [2023-12-21 09:28:36,102 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 09:28:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 9074 transitions. [2023-12-21 09:28:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 09:28:36,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:36,113 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 09:28:36,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 09:28:36,113 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:36,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1827861506, now seen corresponding path program 1 times [2023-12-21 09:28:36,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:36,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543029596] [2023-12-21 09:28:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:36,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:28:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:28:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:28:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:28:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:28:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:28:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:36,191 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 09:28:36,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:36,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543029596] [2023-12-21 09:28:36,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543029596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:36,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:36,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:28:36,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69019056] [2023-12-21 09:28:36,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:36,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:28:36,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:36,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:28:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:28:36,193 INFO L87 Difference]: Start difference. First operand 5256 states and 9074 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 09:28:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:37,050 INFO L93 Difference]: Finished difference Result 13059 states and 23010 transitions. [2023-12-21 09:28:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:28:37,051 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 09:28:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:37,097 INFO L225 Difference]: With dead ends: 13059 [2023-12-21 09:28:37,097 INFO L226 Difference]: Without dead ends: 8883 [2023-12-21 09:28:37,114 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 09:28:37,114 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 638 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:37,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 714 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:28:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2023-12-21 09:28:37,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 8789. [2023-12-21 09:28:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8789 states, 7218 states have (on average 1.642975893599335) internal successors, (11859), 7223 states have internal predecessors, (11859), 1553 states have call successors, (1553), 13 states have call predecessors, (1553), 17 states have return successors, (1748), 1552 states have call predecessors, (1748), 1552 states have call successors, (1748) [2023-12-21 09:28:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8789 states to 8789 states and 15160 transitions. [2023-12-21 09:28:37,423 INFO L78 Accepts]: Start accepts. Automaton has 8789 states and 15160 transitions. Word has length 108 [2023-12-21 09:28:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:37,423 INFO L495 AbstractCegarLoop]: Abstraction has 8789 states and 15160 transitions. [2023-12-21 09:28:37,424 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 09:28:37,424 INFO L276 IsEmpty]: Start isEmpty. Operand 8789 states and 15160 transitions. [2023-12-21 09:28:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 09:28:37,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:37,438 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 09:28:37,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 09:28:37,439 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:37,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash -902953501, now seen corresponding path program 1 times [2023-12-21 09:28:37,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:37,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871163034] [2023-12-21 09:28:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:37,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:28:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:28:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:28:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:28:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:28:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:28:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:37,511 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 09:28:37,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:37,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871163034] [2023-12-21 09:28:37,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871163034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:37,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:37,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:28:37,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014224670] [2023-12-21 09:28:37,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:37,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:28:37,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:37,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:28:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:28:37,513 INFO L87 Difference]: Start difference. First operand 8789 states and 15160 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 09:28:38,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:38,529 INFO L93 Difference]: Finished difference Result 22831 states and 40144 transitions. [2023-12-21 09:28:38,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:28:38,530 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 09:28:38,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:38,569 INFO L225 Difference]: With dead ends: 22831 [2023-12-21 09:28:38,569 INFO L226 Difference]: Without dead ends: 15555 [2023-12-21 09:28:38,585 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 09:28:38,585 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 635 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:38,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 738 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 09:28:38,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15555 states. [2023-12-21 09:28:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15555 to 15461. [2023-12-21 09:28:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15461 states, 12687 states have (on average 1.63316780956885) internal successors, (20720), 12692 states have internal predecessors, (20720), 2756 states have call successors, (2756), 13 states have call predecessors, (2756), 17 states have return successors, (3095), 2755 states have call predecessors, (3095), 2755 states have call successors, (3095) [2023-12-21 09:28:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15461 states to 15461 states and 26571 transitions. [2023-12-21 09:28:39,040 INFO L78 Accepts]: Start accepts. Automaton has 15461 states and 26571 transitions. Word has length 109 [2023-12-21 09:28:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:39,041 INFO L495 AbstractCegarLoop]: Abstraction has 15461 states and 26571 transitions. [2023-12-21 09:28:39,041 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 09:28:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 15461 states and 26571 transitions. [2023-12-21 09:28:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 09:28:39,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:39,057 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 09:28:39,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 09:28:39,057 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:39,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:39,058 INFO L85 PathProgramCache]: Analyzing trace with hash -80917313, now seen corresponding path program 1 times [2023-12-21 09:28:39,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:39,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738144117] [2023-12-21 09:28:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:39,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:28:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:28:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:28:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:28:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:28:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:28:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:39,119 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 09:28:39,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:39,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738144117] [2023-12-21 09:28:39,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738144117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:39,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:39,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:28:39,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6113012] [2023-12-21 09:28:39,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:39,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:28:39,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:39,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:28:39,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:28:39,121 INFO L87 Difference]: Start difference. First operand 15461 states and 26571 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 09:28:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:40,337 INFO L93 Difference]: Finished difference Result 40998 states and 71944 transitions. [2023-12-21 09:28:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:28:40,337 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 09:28:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:40,428 INFO L225 Difference]: With dead ends: 40998 [2023-12-21 09:28:40,429 INFO L226 Difference]: Without dead ends: 27670 [2023-12-21 09:28:40,463 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 09:28:40,464 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 633 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:40,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 708 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 09:28:40,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27670 states. [2023-12-21 09:28:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27670 to 27576. [2023-12-21 09:28:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27576 states, 22763 states have (on average 1.6291349997803453) internal successors, (37084), 22768 states have internal predecessors, (37084), 4795 states have call successors, (4795), 13 states have call predecessors, (4795), 17 states have return successors, (5408), 4794 states have call predecessors, (5408), 4794 states have call successors, (5408) [2023-12-21 09:28:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27576 states to 27576 states and 47287 transitions. [2023-12-21 09:28:41,411 INFO L78 Accepts]: Start accepts. Automaton has 27576 states and 47287 transitions. Word has length 110 [2023-12-21 09:28:41,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:41,412 INFO L495 AbstractCegarLoop]: Abstraction has 27576 states and 47287 transitions. [2023-12-21 09:28:41,412 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 09:28:41,412 INFO L276 IsEmpty]: Start isEmpty. Operand 27576 states and 47287 transitions. [2023-12-21 09:28:41,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 09:28:41,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:41,429 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 09:28:41,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 09:28:41,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:41,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash -960011579, now seen corresponding path program 1 times [2023-12-21 09:28:41,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:41,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703347275] [2023-12-21 09:28:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:41,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:28:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:28:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:28:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:28:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:28:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:28:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:41,503 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 09:28:41,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:41,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703347275] [2023-12-21 09:28:41,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703347275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:41,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:41,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:28:41,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750769591] [2023-12-21 09:28:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:41,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:28:41,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:41,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:28:41,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:28:41,505 INFO L87 Difference]: Start difference. First operand 27576 states and 47287 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 09:28:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:43,175 INFO L93 Difference]: Finished difference Result 75190 states and 131133 transitions. [2023-12-21 09:28:43,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:28:43,175 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 09:28:43,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:43,359 INFO L225 Difference]: With dead ends: 75190 [2023-12-21 09:28:43,359 INFO L226 Difference]: Without dead ends: 50494 [2023-12-21 09:28:43,424 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 09:28:43,425 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 629 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:43,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 720 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 09:28:43,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50494 states. [2023-12-21 09:28:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50494 to 50400. [2023-12-21 09:28:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50400 states, 41872 states have (on average 1.6239491784486053) internal successors, (67998), 41877 states have internal predecessors, (67998), 8510 states have call successors, (8510), 13 states have call predecessors, (8510), 17 states have return successors, (9655), 8509 states have call predecessors, (9655), 8509 states have call successors, (9655) [2023-12-21 09:28:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50400 states to 50400 states and 86163 transitions. [2023-12-21 09:28:45,134 INFO L78 Accepts]: Start accepts. Automaton has 50400 states and 86163 transitions. Word has length 111 [2023-12-21 09:28:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:45,134 INFO L495 AbstractCegarLoop]: Abstraction has 50400 states and 86163 transitions. [2023-12-21 09:28:45,135 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 09:28:45,135 INFO L276 IsEmpty]: Start isEmpty. Operand 50400 states and 86163 transitions. [2023-12-21 09:28:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 09:28:45,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:45,153 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 09:28:45,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 09:28:45,153 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:45,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1645474849, now seen corresponding path program 1 times [2023-12-21 09:28:45,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:45,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153318234] [2023-12-21 09:28:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:45,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:28:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:28:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:28:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:28:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:28:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:28:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:45,233 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 09:28:45,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:45,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153318234] [2023-12-21 09:28:45,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153318234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:45,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:45,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:28:45,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237361274] [2023-12-21 09:28:45,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:45,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:28:45,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:45,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:28:45,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:28:45,235 INFO L87 Difference]: Start difference. First operand 50400 states and 86163 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 09:28:47,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:47,554 INFO L93 Difference]: Finished difference Result 93937 states and 164296 transitions. [2023-12-21 09:28:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:28:47,554 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 09:28:47,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:47,964 INFO L225 Difference]: With dead ends: 93937 [2023-12-21 09:28:47,964 INFO L226 Difference]: Without dead ends: 93874 [2023-12-21 09:28:48,001 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 09:28:48,003 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 627 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:48,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 709 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 09:28:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93874 states. [2023-12-21 09:28:50,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93874 to 93780. [2023-12-21 09:28:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93780 states, 78453 states have (on average 1.6173887550507948) internal successors, (126889), 78458 states have internal predecessors, (126889), 15309 states have call successors, (15309), 13 states have call predecessors, (15309), 17 states have return successors, (17500), 15308 states have call predecessors, (17500), 15308 states have call successors, (17500) [2023-12-21 09:28:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93780 states to 93780 states and 159698 transitions. [2023-12-21 09:28:50,733 INFO L78 Accepts]: Start accepts. Automaton has 93780 states and 159698 transitions. Word has length 112 [2023-12-21 09:28:50,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:50,734 INFO L495 AbstractCegarLoop]: Abstraction has 93780 states and 159698 transitions. [2023-12-21 09:28:50,734 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 09:28:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 93780 states and 159698 transitions. [2023-12-21 09:28:50,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 09:28:50,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:50,753 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 09:28:50,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 09:28:50,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:50,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash 822205828, now seen corresponding path program 1 times [2023-12-21 09:28:50,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:50,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330691883] [2023-12-21 09:28:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:50,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:28:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:28:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:28:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:28:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:28:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:28:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 09:28:51,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:51,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330691883] [2023-12-21 09:28:51,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330691883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:28:51,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220286857] [2023-12-21 09:28:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:51,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:28:51,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:28:51,582 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 09:28:51,588 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 09:28:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:51,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 09:28:51,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:28:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 09:28:51,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:28:51,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220286857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:51,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:28:51,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 27 [2023-12-21 09:28:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367536713] [2023-12-21 09:28:51,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:51,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 09:28:51,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:51,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 09:28:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2023-12-21 09:28:51,992 INFO L87 Difference]: Start difference. First operand 93780 states and 159698 transitions. Second operand has 11 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 09:28:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:28:53,724 INFO L93 Difference]: Finished difference Result 93924 states and 159887 transitions. [2023-12-21 09:28:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:28:53,724 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 113 [2023-12-21 09:28:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:28:54,169 INFO L225 Difference]: With dead ends: 93924 [2023-12-21 09:28:54,169 INFO L226 Difference]: Without dead ends: 93866 [2023-12-21 09:28:54,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 09:28:54,199 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 388 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 09:28:54,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 2538 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 09:28:54,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93866 states. [2023-12-21 09:28:56,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93866 to 93852. [2023-12-21 09:28:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93852 states, 78508 states have (on average 1.6172491975340093) internal successors, (126967), 78513 states have internal predecessors, (126967), 15317 states have call successors, (15317), 20 states have call predecessors, (15317), 26 states have return successors, (17510), 15318 states have call predecessors, (17510), 15315 states have call successors, (17510) [2023-12-21 09:28:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93852 states to 93852 states and 159794 transitions. [2023-12-21 09:28:57,040 INFO L78 Accepts]: Start accepts. Automaton has 93852 states and 159794 transitions. Word has length 113 [2023-12-21 09:28:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:28:57,041 INFO L495 AbstractCegarLoop]: Abstraction has 93852 states and 159794 transitions. [2023-12-21 09:28:57,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 09:28:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 93852 states and 159794 transitions. [2023-12-21 09:28:57,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 09:28:57,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:28:57,065 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 09:28:57,083 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 09:28:57,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:28:57,272 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:28:57,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:28:57,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1446768123, now seen corresponding path program 1 times [2023-12-21 09:28:57,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:28:57,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694396921] [2023-12-21 09:28:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:28:57,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:28:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:28:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:28:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:28:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:28:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:28:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:28:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:28:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:28:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:28:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:28:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:28:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:28:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:28:57,412 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 09:28:57,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:28:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694396921] [2023-12-21 09:28:57,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694396921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:28:57,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:28:57,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:28:57,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743955589] [2023-12-21 09:28:57,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:28:57,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:28:57,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:28:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:28:57,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:28:57,414 INFO L87 Difference]: Start difference. First operand 93852 states and 159794 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 5 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 09:29:02,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:02,431 INFO L93 Difference]: Finished difference Result 183167 states and 318457 transitions. [2023-12-21 09:29:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 09:29:02,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 5 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 09:29:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:03,185 INFO L225 Difference]: With dead ends: 183167 [2023-12-21 09:29:03,185 INFO L226 Difference]: Without dead ends: 183051 [2023-12-21 09:29:03,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2023-12-21 09:29:03,250 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1362 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:03,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 980 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:29:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183051 states. [2023-12-21 09:29:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183051 to 182731. [2023-12-21 09:29:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182731 states, 152910 states have (on average 1.6192269962723171) internal successors, (247596), 152919 states have internal predecessors, (247596), 29770 states have call successors, (29770), 37 states have call predecessors, (29770), 50 states have return successors, (31974), 29774 states have call predecessors, (31974), 29766 states have call successors, (31974) [2023-12-21 09:29:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182731 states to 182731 states and 309340 transitions. [2023-12-21 09:29:09,679 INFO L78 Accepts]: Start accepts. Automaton has 182731 states and 309340 transitions. Word has length 114 [2023-12-21 09:29:09,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:09,679 INFO L495 AbstractCegarLoop]: Abstraction has 182731 states and 309340 transitions. [2023-12-21 09:29:09,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 5 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 09:29:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand 182731 states and 309340 transitions. [2023-12-21 09:29:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 09:29:09,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:09,707 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 09:29:09,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 09:29:09,708 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:09,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:09,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1801008313, now seen corresponding path program 1 times [2023-12-21 09:29:09,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:09,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340748135] [2023-12-21 09:29:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:09,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:29:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:29:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:29:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:29:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:29:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:29:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:29:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:29:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:29:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:10,254 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 09:29:10,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:10,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340748135] [2023-12-21 09:29:10,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340748135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:10,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:29:10,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 09:29:10,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489449419] [2023-12-21 09:29:10,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:10,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 09:29:10,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:10,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 09:29:10,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:29:10,255 INFO L87 Difference]: Start difference. First operand 182731 states and 309340 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 6 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 09:29:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:15,077 INFO L93 Difference]: Finished difference Result 183687 states and 317191 transitions. [2023-12-21 09:29:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 09:29:15,077 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 6 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 114 [2023-12-21 09:29:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:15,891 INFO L225 Difference]: With dead ends: 183687 [2023-12-21 09:29:15,891 INFO L226 Difference]: Without dead ends: 183187 [2023-12-21 09:29:15,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=284, Invalid=1122, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 09:29:15,955 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 816 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 3119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:15,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1492 Invalid, 3119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 09:29:16,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183187 states. [2023-12-21 09:29:21,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183187 to 182805. [2023-12-21 09:29:21,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182805 states, 152966 states have (on average 1.6191048991279107) internal successors, (247668), 152976 states have internal predecessors, (247668), 29786 states have call successors, (29786), 41 states have call predecessors, (29786), 52 states have return successors, (32002), 29787 states have call predecessors, (32002), 29782 states have call successors, (32002) [2023-12-21 09:29:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182805 states to 182805 states and 309456 transitions. [2023-12-21 09:29:22,160 INFO L78 Accepts]: Start accepts. Automaton has 182805 states and 309456 transitions. Word has length 114 [2023-12-21 09:29:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:22,161 INFO L495 AbstractCegarLoop]: Abstraction has 182805 states and 309456 transitions. [2023-12-21 09:29:22,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 6 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 09:29:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 182805 states and 309456 transitions. [2023-12-21 09:29:22,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 09:29:22,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:22,188 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] [2023-12-21 09:29:22,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 09:29:22,188 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:22,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:22,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2037742040, now seen corresponding path program 1 times [2023-12-21 09:29:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:22,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608426822] [2023-12-21 09:29:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:22,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:29:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:29:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:29:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:29:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:29:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:29:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:29:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:29:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:29:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,301 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 09:29:22,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:22,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608426822] [2023-12-21 09:29:22,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608426822] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:29:22,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382685985] [2023-12-21 09:29:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:22,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:22,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:29:22,303 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 09:29:22,305 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 09:29:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:22,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 09:29:22,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:29:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:29:22,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:29:22,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382685985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:22,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:29:22,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 09:29:22,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146877725] [2023-12-21 09:29:22,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:29:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:29:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:29:22,538 INFO L87 Difference]: Start difference. First operand 182805 states and 309456 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 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 09:29:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:25,623 INFO L93 Difference]: Finished difference Result 183009 states and 309742 transitions. [2023-12-21 09:29:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:29:25,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 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 114 [2023-12-21 09:29:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:26,223 INFO L225 Difference]: With dead ends: 183009 [2023-12-21 09:29:26,223 INFO L226 Difference]: Without dead ends: 182809 [2023-12-21 09:29:26,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:29:26,298 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 4 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:26,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1205 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:29:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182809 states. [2023-12-21 09:29:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182809 to 182805. [2023-12-21 09:29:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182805 states, 152966 states have (on average 1.6191048991279107) internal successors, (247668), 152976 states have internal predecessors, (247668), 29786 states have call successors, (29786), 41 states have call predecessors, (29786), 52 states have return successors, (32000), 29787 states have call predecessors, (32000), 29782 states have call successors, (32000) [2023-12-21 09:29:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182805 states to 182805 states and 309454 transitions. [2023-12-21 09:29:32,340 INFO L78 Accepts]: Start accepts. Automaton has 182805 states and 309454 transitions. Word has length 114 [2023-12-21 09:29:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:32,341 INFO L495 AbstractCegarLoop]: Abstraction has 182805 states and 309454 transitions. [2023-12-21 09:29:32,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 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 09:29:32,341 INFO L276 IsEmpty]: Start isEmpty. Operand 182805 states and 309454 transitions. [2023-12-21 09:29:32,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 09:29:32,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:32,366 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 09:29:32,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 09:29:32,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-21 09:29:32,567 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:32,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:32,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1718812759, now seen corresponding path program 1 times [2023-12-21 09:29:32,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:32,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551067675] [2023-12-21 09:29:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:32,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:29:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:29:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:29:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:29:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:29:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:29:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:29:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:29:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:29:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:32,823 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 09:29:32,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:32,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551067675] [2023-12-21 09:29:32,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551067675] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:29:32,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012160365] [2023-12-21 09:29:32,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:32,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:32,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:29:32,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:29:32,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 09:29:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:33,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 09:29:33,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:29:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 09:29:33,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:29:33,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012160365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:33,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:29:33,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2023-12-21 09:29:33,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22822877] [2023-12-21 09:29:33,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:33,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 09:29:33,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:33,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 09:29:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2023-12-21 09:29:33,203 INFO L87 Difference]: Start difference. First operand 182805 states and 309454 transitions. Second operand has 11 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 09:29:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:36,996 INFO L93 Difference]: Finished difference Result 183223 states and 310016 transitions. [2023-12-21 09:29:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 09:29:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 115 [2023-12-21 09:29:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:37,717 INFO L225 Difference]: With dead ends: 183223 [2023-12-21 09:29:37,717 INFO L226 Difference]: Without dead ends: 182921 [2023-12-21 09:29:37,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 09:29:37,771 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 544 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:37,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 2252 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 09:29:37,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182921 states. [2023-12-21 09:29:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182921 to 182869. [2023-12-21 09:29:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182869 states, 153014 states have (on average 1.618989112107389) internal successors, (247728), 153023 states have internal predecessors, (247728), 29792 states have call successors, (29792), 51 states have call predecessors, (29792), 62 states have return successors, (32002), 29794 states have call predecessors, (32002), 29786 states have call successors, (32002) [2023-12-21 09:29:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182869 states to 182869 states and 309522 transitions. [2023-12-21 09:29:44,293 INFO L78 Accepts]: Start accepts. Automaton has 182869 states and 309522 transitions. Word has length 115 [2023-12-21 09:29:44,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:44,297 INFO L495 AbstractCegarLoop]: Abstraction has 182869 states and 309522 transitions. [2023-12-21 09:29:44,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 09:29:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 182869 states and 309522 transitions. [2023-12-21 09:29:44,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 09:29:44,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:44,326 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] [2023-12-21 09:29:44,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 09:29:44,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-21 09:29:44,532 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:44,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1193736538, now seen corresponding path program 1 times [2023-12-21 09:29:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:44,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267075181] [2023-12-21 09:29:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:29:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:29:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:29:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:29:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:29:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:29:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:29:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:29:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:29:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,674 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 09:29:44,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:44,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267075181] [2023-12-21 09:29:44,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267075181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:29:44,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99715817] [2023-12-21 09:29:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:44,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:44,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:29:44,681 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:29:44,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 09:29:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:44,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 09:29:44,938 INFO L285 TraceCheckSpWp]: Computing forward predicates...