/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 13:35:38,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 13:35:38,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 13:35:38,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 13:35:38,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 13:35:38,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 13:35:38,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 13:35:38,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 13:35:38,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 13:35:38,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 13:35:38,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 13:35:38,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 13:35:38,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 13:35:38,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 13:35:38,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 13:35:38,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 13:35:38,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 13:35:38,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 13:35:38,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 13:35:38,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 13:35:38,127 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 13:35:38,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 13:35:38,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 13:35:38,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 13:35:38,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 13:35:38,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 13:35:38,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 13:35:38,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 13:35:38,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 13:35:38,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 13:35:38,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-04-06 13:35:38,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 13:35:38,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 13:35:38,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 13:35:38,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 13:35:38,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 13:35:38,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 13:35:38,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 13:35:38,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 13:35:38,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 13:35:38,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 13:35:38,173 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 13:35:38,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 13:35:38,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 13:35:38,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 13:35:38,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 13:35:38,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 13:35:38,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 13:35:38,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 13:35:38,174 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 13:35:38,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 13:35:38,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 13:35:38,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 13:35:38,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 13:35:38,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 13:35:38,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 13:35:38,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 13:35:38,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 13:35:38,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 13:35:38,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 13:35:38,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 13:35:38,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 13:35:38,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 13:35:38,178 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 13:35:38,178 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 13:35:38,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 13:35:38,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 13:35:38,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 13:35:38,411 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 13:35:38,414 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 13:35:38,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-04-06 13:35:38,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65b4305b/0c697e879cc147c2a6d079fdb1441dae/FLAGc680fdb95 [2022-04-06 13:35:38,846 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 13:35:38,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-04-06 13:35:38,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65b4305b/0c697e879cc147c2a6d079fdb1441dae/FLAGc680fdb95 [2022-04-06 13:35:38,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65b4305b/0c697e879cc147c2a6d079fdb1441dae [2022-04-06 13:35:38,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 13:35:38,873 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 13:35:38,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 13:35:38,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 13:35:38,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 13:35:38,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:35:38" (1/1) ... [2022-04-06 13:35:38,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db1bcd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:38, skipping insertion in model container [2022-04-06 13:35:38,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:35:38" (1/1) ... [2022-04-06 13:35:38,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 13:35:38,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 13:35:39,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2022-04-06 13:35:39,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 13:35:39,212 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 13:35:39,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2022-04-06 13:35:39,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 13:35:39,303 INFO L208 MainTranslator]: Completed translation [2022-04-06 13:35:39,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:39 WrapperNode [2022-04-06 13:35:39,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 13:35:39,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 13:35:39,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 13:35:39,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 13:35:39,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:39" (1/1) ... [2022-04-06 13:35:39,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:39" (1/1) ... [2022-04-06 13:35:39,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:39" (1/1) ... [2022-04-06 13:35:39,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:39" (1/1) ... [2022-04-06 13:35:39,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:39" (1/1) ... [2022-04-06 13:35:39,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:39" (1/1) ... [2022-04-06 13:35:39,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:39" (1/1) ... [2022-04-06 13:35:39,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 13:35:39,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 13:35:39,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 13:35:39,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 13:35:39,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:39" (1/1) ... [2022-04-06 13:35:39,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 13:35:39,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 13:35:39,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 13:35:39,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 13:35:39,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 13:35:39,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 13:35:39,480 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 13:35:39,480 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-06 13:35:39,480 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-06 13:35:39,480 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2022-04-06 13:35:39,481 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2022-04-06 13:35:39,482 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2022-04-06 13:35:39,483 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2022-04-06 13:35:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2022-04-06 13:35:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2022-04-06 13:35:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2022-04-06 13:35:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2022-04-06 13:35:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2022-04-06 13:35:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2022-04-06 13:35:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2022-04-06 13:35:39,487 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2022-04-06 13:35:39,487 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2022-04-06 13:35:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2022-04-06 13:35:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-06 13:35:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 13:35:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-06 13:35:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-06 13:35:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-06 13:35:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-06 13:35:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-06 13:35:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-06 13:35:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-06 13:35:39,488 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2022-04-06 13:35:39,489 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-06 13:35:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 13:35:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 13:35:39,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 13:35:39,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 13:35:39,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 13:35:39,672 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 13:35:39,674 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 13:35:39,724 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:39,821 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-04-06 13:35:39,821 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-04-06 13:35:39,827 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:39,855 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-06 13:35:39,855 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-06 13:35:39,870 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:39,881 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-06 13:35:39,881 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-06 13:35:39,885 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:39,892 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:35:39,892 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:35:40,074 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:40,107 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-04-06 13:35:40,107 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-04-06 13:35:40,140 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:40,153 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-06 13:35:40,154 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-06 13:35:40,206 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 13:35:40,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 13:35:40,215 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 13:35:40,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:35:40 BoogieIcfgContainer [2022-04-06 13:35:40,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 13:35:40,218 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 13:35:40,218 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 13:35:40,219 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 13:35:40,222 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:35:40" (1/1) ... [2022-04-06 13:35:40,223 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 13:35:40,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 01:35:40 BasicIcfg [2022-04-06 13:35:40,258 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 13:35:40,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 13:35:40,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 13:35:40,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 13:35:40,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 01:35:38" (1/4) ... [2022-04-06 13:35:40,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ad9d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:35:40, skipping insertion in model container [2022-04-06 13:35:40,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:39" (2/4) ... [2022-04-06 13:35:40,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ad9d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:35:40, skipping insertion in model container [2022-04-06 13:35:40,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:35:40" (3/4) ... [2022-04-06 13:35:40,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ad9d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 01:35:40, skipping insertion in model container [2022-04-06 13:35:40,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 01:35:40" (4/4) ... [2022-04-06 13:35:40,265 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.cqvasr [2022-04-06 13:35:40,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 13:35:40,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 13:35:40,304 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 13:35:40,309 INFO L340 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-04-06 13:35:40,309 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 13:35:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 206 states have (on average 1.4271844660194175) internal successors, (294), 224 states have internal predecessors, (294), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2022-04-06 13:35:40,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-06 13:35:40,331 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:40,331 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:40,332 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:40,336 INFO L85 PathProgramCache]: Analyzing trace with hash 13220813, now seen corresponding path program 1 times [2022-04-06 13:35:40,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:40,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575653899] [2022-04-06 13:35:40,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:40,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:40,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:40,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:40,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:40,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575653899] [2022-04-06 13:35:40,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575653899] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:40,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:40,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 13:35:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813102225] [2022-04-06 13:35:40,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:40,706 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 13:35:40,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 13:35:40,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-06 13:35:40,739 INFO L87 Difference]: Start difference. First operand has 295 states, 206 states have (on average 1.4271844660194175) internal successors, (294), 224 states have internal predecessors, (294), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 13:35:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:41,649 INFO L93 Difference]: Finished difference Result 576 states and 845 transitions. [2022-04-06 13:35:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:41,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-04-06 13:35:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:41,661 INFO L225 Difference]: With dead ends: 576 [2022-04-06 13:35:41,662 INFO L226 Difference]: Without dead ends: 326 [2022-04-06 13:35:41,667 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:41,669 INFO L913 BasicCegarLoop]: 355 mSDtfsCounter, 234 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:41,670 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 597 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:35:41,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-04-06 13:35:41,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2022-04-06 13:35:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 201 states have (on average 1.373134328358209) internal successors, (276), 217 states have internal predecessors, (276), 61 states have call successors, (61), 26 states have call predecessors, (61), 24 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-06 13:35:41,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2022-04-06 13:35:41,734 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 20 [2022-04-06 13:35:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:41,734 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2022-04-06 13:35:41,735 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-06 13:35:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2022-04-06 13:35:41,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-06 13:35:41,737 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:41,737 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:41,737 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 13:35:41,738 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:41,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:41,738 INFO L85 PathProgramCache]: Analyzing trace with hash 690648180, now seen corresponding path program 1 times [2022-04-06 13:35:41,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:41,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516098084] [2022-04-06 13:35:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:41,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:41,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516098084] [2022-04-06 13:35:41,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516098084] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:41,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:41,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:41,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102102038] [2022-04-06 13:35:41,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:41,946 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:41,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:41,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:41,947 INFO L87 Difference]: Start difference. First operand 287 states and 383 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:43,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:43,216 INFO L93 Difference]: Finished difference Result 690 states and 962 transitions. [2022-04-06 13:35:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:43,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-04-06 13:35:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:43,225 INFO L225 Difference]: With dead ends: 690 [2022-04-06 13:35:43,225 INFO L226 Difference]: Without dead ends: 507 [2022-04-06 13:35:43,230 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:43,231 INFO L913 BasicCegarLoop]: 490 mSDtfsCounter, 431 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:43,232 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 683 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:35:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-04-06 13:35:43,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2022-04-06 13:35:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 318 states have (on average 1.3459119496855345) internal successors, (428), 329 states have internal predecessors, (428), 80 states have call successors, (80), 37 states have call predecessors, (80), 41 states have return successors, (100), 77 states have call predecessors, (100), 68 states have call successors, (100) [2022-04-06 13:35:43,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2022-04-06 13:35:43,283 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 25 [2022-04-06 13:35:43,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:43,284 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2022-04-06 13:35:43,284 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2022-04-06 13:35:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-06 13:35:43,288 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:43,288 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:43,288 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 13:35:43,289 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:43,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:43,289 INFO L85 PathProgramCache]: Analyzing trace with hash 543429165, now seen corresponding path program 1 times [2022-04-06 13:35:43,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:43,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028352835] [2022-04-06 13:35:43,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:43,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:43,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:43,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:43,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:43,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028352835] [2022-04-06 13:35:43,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028352835] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:43,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:43,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:43,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118727031] [2022-04-06 13:35:43,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:43,467 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:43,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:43,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:43,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:43,468 INFO L87 Difference]: Start difference. First operand 440 states and 608 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:44,516 INFO L93 Difference]: Finished difference Result 1013 states and 1458 transitions. [2022-04-06 13:35:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:44,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-04-06 13:35:44,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:44,538 INFO L225 Difference]: With dead ends: 1013 [2022-04-06 13:35:44,538 INFO L226 Difference]: Without dead ends: 690 [2022-04-06 13:35:44,542 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:44,546 INFO L913 BasicCegarLoop]: 402 mSDtfsCounter, 390 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:44,548 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 587 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:35:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-04-06 13:35:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 618. [2022-04-06 13:35:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 455 states have (on average 1.3560439560439561) internal successors, (617), 466 states have internal predecessors, (617), 109 states have call successors, (109), 49 states have call predecessors, (109), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2022-04-06 13:35:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 888 transitions. [2022-04-06 13:35:44,601 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 888 transitions. Word has length 31 [2022-04-06 13:35:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:44,601 INFO L478 AbstractCegarLoop]: Abstraction has 618 states and 888 transitions. [2022-04-06 13:35:44,601 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 888 transitions. [2022-04-06 13:35:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-06 13:35:44,607 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:44,611 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:44,612 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 13:35:44,612 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:44,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1394943520, now seen corresponding path program 1 times [2022-04-06 13:35:44,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:44,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258278911] [2022-04-06 13:35:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:44,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:44,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:44,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258278911] [2022-04-06 13:35:44,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258278911] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:44,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:44,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771270676] [2022-04-06 13:35:44,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:44,749 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:44,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:44,750 INFO L87 Difference]: Start difference. First operand 618 states and 888 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:45,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:45,424 INFO L93 Difference]: Finished difference Result 665 states and 952 transitions. [2022-04-06 13:35:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:45,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-04-06 13:35:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:45,429 INFO L225 Difference]: With dead ends: 665 [2022-04-06 13:35:45,429 INFO L226 Difference]: Without dead ends: 661 [2022-04-06 13:35:45,429 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:35:45,430 INFO L913 BasicCegarLoop]: 340 mSDtfsCounter, 224 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:45,430 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 589 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:35:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-04-06 13:35:45,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 628. [2022-04-06 13:35:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 466 states have (on average 1.354077253218884) internal successors, (631), 475 states have internal predecessors, (631), 108 states have call successors, (108), 50 states have call predecessors, (108), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2022-04-06 13:35:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2022-04-06 13:35:45,465 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 36 [2022-04-06 13:35:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:45,465 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2022-04-06 13:35:45,466 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2022-04-06 13:35:45,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 13:35:45,467 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:45,467 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:45,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 13:35:45,468 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:45,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:45,468 INFO L85 PathProgramCache]: Analyzing trace with hash -455202915, now seen corresponding path program 1 times [2022-04-06 13:35:45,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:45,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012167256] [2022-04-06 13:35:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:45,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:45,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:35:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:35:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:45,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:45,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012167256] [2022-04-06 13:35:45,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012167256] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:45,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:45,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:35:45,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332915834] [2022-04-06 13:35:45,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:45,620 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:35:45,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:45,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:35:45,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:45,620 INFO L87 Difference]: Start difference. First operand 628 states and 901 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:46,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:46,519 INFO L93 Difference]: Finished difference Result 710 states and 1007 transitions. [2022-04-06 13:35:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 13:35:46,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2022-04-06 13:35:46,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:46,523 INFO L225 Difference]: With dead ends: 710 [2022-04-06 13:35:46,523 INFO L226 Difference]: Without dead ends: 705 [2022-04-06 13:35:46,524 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:35:46,525 INFO L913 BasicCegarLoop]: 320 mSDtfsCounter, 182 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:46,525 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 710 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:35:46,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-04-06 13:35:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-04-06 13:35:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.3504098360655739) internal successors, (659), 502 states have internal predecessors, (659), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-04-06 13:35:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 937 transitions. [2022-04-06 13:35:46,563 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 937 transitions. Word has length 39 [2022-04-06 13:35:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:46,565 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 937 transitions. [2022-04-06 13:35:46,565 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 937 transitions. [2022-04-06 13:35:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 13:35:46,566 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:46,567 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:46,567 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 13:35:46,567 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash -454217859, now seen corresponding path program 1 times [2022-04-06 13:35:46,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:46,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993076896] [2022-04-06 13:35:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:46,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:46,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:46,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:35:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:46,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:35:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:46,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:46,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993076896] [2022-04-06 13:35:46,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993076896] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:46,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:46,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:35:46,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137698862] [2022-04-06 13:35:46,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:46,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:35:46,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:35:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:35:46,780 INFO L87 Difference]: Start difference. First operand 658 states and 937 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:35:47,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:47,972 INFO L93 Difference]: Finished difference Result 713 states and 1009 transitions. [2022-04-06 13:35:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:35:47,972 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-04-06 13:35:47,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:47,976 INFO L225 Difference]: With dead ends: 713 [2022-04-06 13:35:47,976 INFO L226 Difference]: Without dead ends: 705 [2022-04-06 13:35:47,976 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:35:47,978 INFO L913 BasicCegarLoop]: 302 mSDtfsCounter, 599 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:47,980 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 705 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:35:47,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-04-06 13:35:48,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-04-06 13:35:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.348360655737705) internal successors, (658), 502 states have internal predecessors, (658), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-04-06 13:35:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 936 transitions. [2022-04-06 13:35:48,024 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 936 transitions. Word has length 39 [2022-04-06 13:35:48,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:48,024 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 936 transitions. [2022-04-06 13:35:48,024 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:35:48,024 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 936 transitions. [2022-04-06 13:35:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-06 13:35:48,026 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:48,026 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:48,026 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 13:35:48,026 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1225775968, now seen corresponding path program 1 times [2022-04-06 13:35:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:48,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114337823] [2022-04-06 13:35:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:48,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:35:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:35:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:48,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:48,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114337823] [2022-04-06 13:35:48,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114337823] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:48,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:48,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:35:48,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6305242] [2022-04-06 13:35:48,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:48,259 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:35:48,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:48,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:35:48,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:35:48,260 INFO L87 Difference]: Start difference. First operand 658 states and 936 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:35:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:49,628 INFO L93 Difference]: Finished difference Result 713 states and 1008 transitions. [2022-04-06 13:35:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:35:49,629 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2022-04-06 13:35:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:49,632 INFO L225 Difference]: With dead ends: 713 [2022-04-06 13:35:49,632 INFO L226 Difference]: Without dead ends: 705 [2022-04-06 13:35:49,633 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:35:49,633 INFO L913 BasicCegarLoop]: 303 mSDtfsCounter, 836 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:49,634 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 859 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:35:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-04-06 13:35:49,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-04-06 13:35:49,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.346311475409836) internal successors, (657), 502 states have internal predecessors, (657), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-04-06 13:35:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2022-04-06 13:35:49,672 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 40 [2022-04-06 13:35:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:49,672 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2022-04-06 13:35:49,673 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:35:49,673 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2022-04-06 13:35:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-06 13:35:49,673 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:49,674 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:49,674 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 13:35:49,674 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:49,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:49,674 INFO L85 PathProgramCache]: Analyzing trace with hash 636808681, now seen corresponding path program 1 times [2022-04-06 13:35:49,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:49,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171550615] [2022-04-06 13:35:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:49,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:49,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:35:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:35:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:49,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:49,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171550615] [2022-04-06 13:35:49,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171550615] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:49,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:49,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:35:49,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326696760] [2022-04-06 13:35:49,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:49,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:35:49,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:35:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:49,811 INFO L87 Difference]: Start difference. First operand 658 states and 935 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:51,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:51,024 INFO L93 Difference]: Finished difference Result 1215 states and 1783 transitions. [2022-04-06 13:35:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:35:51,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2022-04-06 13:35:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:51,038 INFO L225 Difference]: With dead ends: 1215 [2022-04-06 13:35:51,038 INFO L226 Difference]: Without dead ends: 1186 [2022-04-06 13:35:51,039 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:35:51,039 INFO L913 BasicCegarLoop]: 392 mSDtfsCounter, 696 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:51,040 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 822 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:35:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-04-06 13:35:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-04-06 13:35:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 817 states have (on average 1.3635250917992656) internal successors, (1114), 835 states have internal predecessors, (1114), 173 states have call successors, (173), 79 states have call predecessors, (173), 94 states have return successors, (315), 175 states have call predecessors, (315), 163 states have call successors, (315) [2022-04-06 13:35:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1602 transitions. [2022-04-06 13:35:51,110 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1602 transitions. Word has length 41 [2022-04-06 13:35:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:51,110 INFO L478 AbstractCegarLoop]: Abstraction has 1085 states and 1602 transitions. [2022-04-06 13:35:51,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1602 transitions. [2022-04-06 13:35:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-06 13:35:51,111 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:51,111 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:51,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 13:35:51,112 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:51,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1732782333, now seen corresponding path program 1 times [2022-04-06 13:35:51,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:51,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645131550] [2022-04-06 13:35:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:51,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:51,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:51,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:35:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:51,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:35:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:51,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:51,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:51,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645131550] [2022-04-06 13:35:51,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645131550] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:51,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:51,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:35:51,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897439193] [2022-04-06 13:35:51,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:51,293 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:35:51,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:35:51,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:35:51,294 INFO L87 Difference]: Start difference. First operand 1085 states and 1602 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:52,269 INFO L93 Difference]: Finished difference Result 1170 states and 1724 transitions. [2022-04-06 13:35:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:35:52,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2022-04-06 13:35:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:52,276 INFO L225 Difference]: With dead ends: 1170 [2022-04-06 13:35:52,276 INFO L226 Difference]: Without dead ends: 1148 [2022-04-06 13:35:52,277 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:35:52,278 INFO L913 BasicCegarLoop]: 327 mSDtfsCounter, 323 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:52,278 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 1131 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:35:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-04-06 13:35:52,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1078. [2022-04-06 13:35:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 813 states have (on average 1.3640836408364083) internal successors, (1109), 831 states have internal predecessors, (1109), 171 states have call successors, (171), 78 states have call predecessors, (171), 93 states have return successors, (313), 173 states have call predecessors, (313), 161 states have call successors, (313) [2022-04-06 13:35:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1593 transitions. [2022-04-06 13:35:52,349 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1593 transitions. Word has length 42 [2022-04-06 13:35:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:52,349 INFO L478 AbstractCegarLoop]: Abstraction has 1078 states and 1593 transitions. [2022-04-06 13:35:52,349 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:52,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1593 transitions. [2022-04-06 13:35:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-06 13:35:52,351 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:52,351 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:52,351 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 13:35:52,352 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:52,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1415168827, now seen corresponding path program 1 times [2022-04-06 13:35:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:52,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486540323] [2022-04-06 13:35:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:52,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:52,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:52,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486540323] [2022-04-06 13:35:52,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486540323] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:52,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:52,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:52,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761449991] [2022-04-06 13:35:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:52,468 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:52,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:52,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:52,469 INFO L87 Difference]: Start difference. First operand 1078 states and 1593 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:53,019 INFO L93 Difference]: Finished difference Result 1507 states and 2275 transitions. [2022-04-06 13:35:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:53,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-04-06 13:35:53,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:53,022 INFO L225 Difference]: With dead ends: 1507 [2022-04-06 13:35:53,022 INFO L226 Difference]: Without dead ends: 599 [2022-04-06 13:35:53,031 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:53,032 INFO L913 BasicCegarLoop]: 281 mSDtfsCounter, 444 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:53,033 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 339 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:35:53,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-04-06 13:35:53,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 598. [2022-04-06 13:35:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 443 states have (on average 1.327313769751693) internal successors, (588), 455 states have internal predecessors, (588), 102 states have call successors, (102), 47 states have call predecessors, (102), 52 states have return successors, (160), 98 states have call predecessors, (160), 94 states have call successors, (160) [2022-04-06 13:35:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 850 transitions. [2022-04-06 13:35:53,069 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 850 transitions. Word has length 45 [2022-04-06 13:35:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:53,069 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 850 transitions. [2022-04-06 13:35:53,069 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:35:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 850 transitions. [2022-04-06 13:35:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-06 13:35:53,070 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:53,071 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:53,071 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 13:35:53,071 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1870236117, now seen corresponding path program 1 times [2022-04-06 13:35:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:53,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045607038] [2022-04-06 13:35:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:35:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:35:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:53,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:53,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045607038] [2022-04-06 13:35:53,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045607038] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:53,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:53,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:35:53,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387062640] [2022-04-06 13:35:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:53,238 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:35:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:53,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:35:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:35:53,239 INFO L87 Difference]: Start difference. First operand 598 states and 850 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:35:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:53,975 INFO L93 Difference]: Finished difference Result 633 states and 893 transitions. [2022-04-06 13:35:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:35:53,976 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-04-06 13:35:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:53,978 INFO L225 Difference]: With dead ends: 633 [2022-04-06 13:35:53,978 INFO L226 Difference]: Without dead ends: 608 [2022-04-06 13:35:53,979 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:35:53,980 INFO L913 BasicCegarLoop]: 291 mSDtfsCounter, 269 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:53,980 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 1153 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:35:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-04-06 13:35:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2022-04-06 13:35:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 442 states have (on average 1.3235294117647058) internal successors, (585), 454 states have internal predecessors, (585), 101 states have call successors, (101), 47 states have call predecessors, (101), 52 states have return successors, (159), 97 states have call predecessors, (159), 93 states have call successors, (159) [2022-04-06 13:35:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 845 transitions. [2022-04-06 13:35:54,017 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 845 transitions. Word has length 46 [2022-04-06 13:35:54,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:54,017 INFO L478 AbstractCegarLoop]: Abstraction has 596 states and 845 transitions. [2022-04-06 13:35:54,017 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:35:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 845 transitions. [2022-04-06 13:35:54,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-06 13:35:54,018 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:54,018 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:54,018 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-06 13:35:54,018 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:54,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:54,019 INFO L85 PathProgramCache]: Analyzing trace with hash -961233056, now seen corresponding path program 1 times [2022-04-06 13:35:54,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:54,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290069743] [2022-04-06 13:35:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:54,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:35:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:35:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:54,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:54,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290069743] [2022-04-06 13:35:54,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290069743] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:54,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:54,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:35:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534775713] [2022-04-06 13:35:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:54,176 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:35:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:54,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:35:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:54,177 INFO L87 Difference]: Start difference. First operand 596 states and 845 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:54,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:54,935 INFO L93 Difference]: Finished difference Result 834 states and 1234 transitions. [2022-04-06 13:35:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:35:54,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-04-06 13:35:54,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:54,940 INFO L225 Difference]: With dead ends: 834 [2022-04-06 13:35:54,940 INFO L226 Difference]: Without dead ends: 826 [2022-04-06 13:35:54,941 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:35:54,941 INFO L913 BasicCegarLoop]: 324 mSDtfsCounter, 615 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:54,941 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 662 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:35:54,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-04-06 13:35:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 665. [2022-04-06 13:35:54,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 495 states have (on average 1.3232323232323233) internal successors, (655), 508 states have internal predecessors, (655), 109 states have call successors, (109), 50 states have call predecessors, (109), 60 states have return successors, (184), 110 states have call predecessors, (184), 101 states have call successors, (184) [2022-04-06 13:35:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 948 transitions. [2022-04-06 13:35:54,986 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 948 transitions. Word has length 46 [2022-04-06 13:35:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:54,986 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 948 transitions. [2022-04-06 13:35:54,986 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 948 transitions. [2022-04-06 13:35:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-06 13:35:54,987 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:54,987 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:54,987 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-06 13:35:54,988 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:54,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:54,988 INFO L85 PathProgramCache]: Analyzing trace with hash -91170375, now seen corresponding path program 1 times [2022-04-06 13:35:54,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:54,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336997807] [2022-04-06 13:35:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:54,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 13:35:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:55,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:55,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336997807] [2022-04-06 13:35:55,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336997807] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:55,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:55,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:35:55,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999820790] [2022-04-06 13:35:55,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:55,114 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:35:55,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:55,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:35:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:35:55,114 INFO L87 Difference]: Start difference. First operand 665 states and 948 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 13:35:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:55,725 INFO L93 Difference]: Finished difference Result 739 states and 1021 transitions. [2022-04-06 13:35:55,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:35:55,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-04-06 13:35:55,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:55,728 INFO L225 Difference]: With dead ends: 739 [2022-04-06 13:35:55,728 INFO L226 Difference]: Without dead ends: 462 [2022-04-06 13:35:55,729 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:35:55,730 INFO L913 BasicCegarLoop]: 314 mSDtfsCounter, 471 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:55,730 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 650 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:35:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-04-06 13:35:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2022-04-06 13:35:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 327 states have (on average 1.27217125382263) internal successors, (416), 338 states have internal predecessors, (416), 69 states have call successors, (69), 38 states have call predecessors, (69), 44 states have return successors, (93), 68 states have call predecessors, (93), 61 states have call successors, (93) [2022-04-06 13:35:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 578 transitions. [2022-04-06 13:35:55,759 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 578 transitions. Word has length 49 [2022-04-06 13:35:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:55,760 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 578 transitions. [2022-04-06 13:35:55,760 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 13:35:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 578 transitions. [2022-04-06 13:35:55,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 13:35:55,761 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:55,761 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:55,761 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-06 13:35:55,761 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:55,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:55,761 INFO L85 PathProgramCache]: Analyzing trace with hash 298099852, now seen corresponding path program 1 times [2022-04-06 13:35:55,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:55,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144849214] [2022-04-06 13:35:55,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:55,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:35:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:35:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:55,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:55,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144849214] [2022-04-06 13:35:55,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144849214] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:55,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:55,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:35:55,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794095986] [2022-04-06 13:35:55,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:55,941 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:35:55,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:55,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:35:55,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:35:55,942 INFO L87 Difference]: Start difference. First operand 441 states and 578 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:56,674 INFO L93 Difference]: Finished difference Result 457 states and 597 transitions. [2022-04-06 13:35:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:35:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-04-06 13:35:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:56,677 INFO L225 Difference]: With dead ends: 457 [2022-04-06 13:35:56,677 INFO L226 Difference]: Without dead ends: 453 [2022-04-06 13:35:56,677 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:35:56,678 INFO L913 BasicCegarLoop]: 284 mSDtfsCounter, 164 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:56,678 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1464 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:35:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-04-06 13:35:56,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2022-04-06 13:35:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 334 states have (on average 1.2724550898203593) internal successors, (425), 346 states have internal predecessors, (425), 70 states have call successors, (70), 38 states have call predecessors, (70), 44 states have return successors, (94), 69 states have call predecessors, (94), 62 states have call successors, (94) [2022-04-06 13:35:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 589 transitions. [2022-04-06 13:35:56,711 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 589 transitions. Word has length 47 [2022-04-06 13:35:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:56,712 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 589 transitions. [2022-04-06 13:35:56,712 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 589 transitions. [2022-04-06 13:35:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 13:35:56,712 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:56,713 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:56,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-06 13:35:56,713 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:56,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash 298068108, now seen corresponding path program 1 times [2022-04-06 13:35:56,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:56,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360382353] [2022-04-06 13:35:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:35:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:35:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:56,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:56,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360382353] [2022-04-06 13:35:56,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360382353] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:56,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:56,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:35:56,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200966823] [2022-04-06 13:35:56,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:56,917 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:35:56,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:56,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:35:56,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:35:56,918 INFO L87 Difference]: Start difference. First operand 449 states and 589 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:57,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:57,589 INFO L93 Difference]: Finished difference Result 780 states and 1069 transitions. [2022-04-06 13:35:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:35:57,590 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-04-06 13:35:57,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:57,592 INFO L225 Difference]: With dead ends: 780 [2022-04-06 13:35:57,592 INFO L226 Difference]: Without dead ends: 472 [2022-04-06 13:35:57,594 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:35:57,594 INFO L913 BasicCegarLoop]: 286 mSDtfsCounter, 264 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:57,594 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 1470 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:35:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-04-06 13:35:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2022-04-06 13:35:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 343 states have (on average 1.2769679300291545) internal successors, (438), 356 states have internal predecessors, (438), 70 states have call successors, (70), 38 states have call predecessors, (70), 45 states have return successors, (96), 69 states have call predecessors, (96), 62 states have call successors, (96) [2022-04-06 13:35:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2022-04-06 13:35:57,626 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 47 [2022-04-06 13:35:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:57,627 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2022-04-06 13:35:57,627 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:35:57,627 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2022-04-06 13:35:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 13:35:57,628 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:57,628 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:57,628 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-06 13:35:57,628 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:57,628 INFO L85 PathProgramCache]: Analyzing trace with hash -309998534, now seen corresponding path program 1 times [2022-04-06 13:35:57,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:57,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702840473] [2022-04-06 13:35:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:57,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:35:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:35:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:57,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:57,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702840473] [2022-04-06 13:35:57,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702840473] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:57,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:57,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:35:57,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053497416] [2022-04-06 13:35:57,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:57,798 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:35:57,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:57,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:35:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:35:57,798 INFO L87 Difference]: Start difference. First operand 459 states and 604 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:35:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:59,004 INFO L93 Difference]: Finished difference Result 594 states and 812 transitions. [2022-04-06 13:35:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 13:35:59,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2022-04-06 13:35:59,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:59,007 INFO L225 Difference]: With dead ends: 594 [2022-04-06 13:35:59,007 INFO L226 Difference]: Without dead ends: 575 [2022-04-06 13:35:59,007 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:35:59,008 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 1027 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:59,008 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 775 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:35:59,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-04-06 13:35:59,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 444. [2022-04-06 13:35:59,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 332 states have (on average 1.2771084337349397) internal successors, (424), 343 states have internal predecessors, (424), 68 states have call successors, (68), 38 states have call predecessors, (68), 43 states have return successors, (91), 66 states have call predecessors, (91), 60 states have call successors, (91) [2022-04-06 13:35:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 583 transitions. [2022-04-06 13:35:59,045 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 583 transitions. Word has length 48 [2022-04-06 13:35:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:59,045 INFO L478 AbstractCegarLoop]: Abstraction has 444 states and 583 transitions. [2022-04-06 13:35:59,045 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:35:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 583 transitions. [2022-04-06 13:35:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-06 13:35:59,046 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:59,046 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:35:59,047 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-06 13:35:59,047 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:59,047 INFO L85 PathProgramCache]: Analyzing trace with hash 328516868, now seen corresponding path program 1 times [2022-04-06 13:35:59,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:59,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869440429] [2022-04-06 13:35:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:59,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 13:35:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:35:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:59,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:59,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869440429] [2022-04-06 13:35:59,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869440429] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:59,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:59,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:35:59,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313925373] [2022-04-06 13:35:59,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:59,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:35:59,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:35:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:35:59,203 INFO L87 Difference]: Start difference. First operand 444 states and 583 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:00,080 INFO L93 Difference]: Finished difference Result 458 states and 599 transitions. [2022-04-06 13:36:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:36:00,081 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-04-06 13:36:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:00,083 INFO L225 Difference]: With dead ends: 458 [2022-04-06 13:36:00,083 INFO L226 Difference]: Without dead ends: 427 [2022-04-06 13:36:00,083 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:00,084 INFO L913 BasicCegarLoop]: 289 mSDtfsCounter, 89 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:00,084 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 1517 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:36:00,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-04-06 13:36:00,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-04-06 13:36:00,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 318 states have (on average 1.279874213836478) internal successors, (407), 330 states have internal predecessors, (407), 66 states have call successors, (66), 36 states have call predecessors, (66), 42 states have return successors, (89), 64 states have call predecessors, (89), 58 states have call successors, (89) [2022-04-06 13:36:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 562 transitions. [2022-04-06 13:36:00,116 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 562 transitions. Word has length 49 [2022-04-06 13:36:00,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:00,116 INFO L478 AbstractCegarLoop]: Abstraction has 427 states and 562 transitions. [2022-04-06 13:36:00,117 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:00,117 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 562 transitions. [2022-04-06 13:36:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 13:36:00,117 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:00,117 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:00,117 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-06 13:36:00,118 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:00,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:00,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1720991068, now seen corresponding path program 1 times [2022-04-06 13:36:00,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:00,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365254549] [2022-04-06 13:36:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:00,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:36:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:36:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:00,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365254549] [2022-04-06 13:36:00,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365254549] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:00,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:00,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:36:00,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564523399] [2022-04-06 13:36:00,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:00,274 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:36:00,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:36:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:00,275 INFO L87 Difference]: Start difference. First operand 427 states and 562 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:01,037 INFO L93 Difference]: Finished difference Result 456 states and 600 transitions. [2022-04-06 13:36:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:36:01,038 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-04-06 13:36:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:01,040 INFO L225 Difference]: With dead ends: 456 [2022-04-06 13:36:01,040 INFO L226 Difference]: Without dead ends: 423 [2022-04-06 13:36:01,040 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:36:01,041 INFO L913 BasicCegarLoop]: 271 mSDtfsCounter, 244 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:01,041 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1122 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:36:01,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-04-06 13:36:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 409. [2022-04-06 13:36:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 304 states have (on average 1.2861842105263157) internal successors, (391), 316 states have internal predecessors, (391), 64 states have call successors, (64), 34 states have call predecessors, (64), 40 states have return successors, (87), 62 states have call predecessors, (87), 56 states have call successors, (87) [2022-04-06 13:36:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 542 transitions. [2022-04-06 13:36:01,072 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 542 transitions. Word has length 50 [2022-04-06 13:36:01,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:01,072 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 542 transitions. [2022-04-06 13:36:01,072 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 542 transitions. [2022-04-06 13:36:01,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 13:36:01,073 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:01,073 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:01,073 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-06 13:36:01,073 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:01,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:01,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1090499838, now seen corresponding path program 1 times [2022-04-06 13:36:01,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:01,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109574226] [2022-04-06 13:36:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:01,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:36:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:01,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:01,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109574226] [2022-04-06 13:36:01,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109574226] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:01,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:01,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:36:01,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361897143] [2022-04-06 13:36:01,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:01,220 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:36:01,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:01,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:36:01,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:01,221 INFO L87 Difference]: Start difference. First operand 409 states and 542 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 13:36:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:03,116 INFO L93 Difference]: Finished difference Result 634 states and 905 transitions. [2022-04-06 13:36:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:36:03,117 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-04-06 13:36:03,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:03,119 INFO L225 Difference]: With dead ends: 634 [2022-04-06 13:36:03,119 INFO L226 Difference]: Without dead ends: 600 [2022-04-06 13:36:03,119 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-04-06 13:36:03,120 INFO L913 BasicCegarLoop]: 421 mSDtfsCounter, 618 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:03,120 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 1412 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 13:36:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-04-06 13:36:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 534. [2022-04-06 13:36:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 399 states have (on average 1.3433583959899749) internal successors, (536), 410 states have internal predecessors, (536), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-04-06 13:36:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 769 transitions. [2022-04-06 13:36:03,161 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 769 transitions. Word has length 50 [2022-04-06 13:36:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:03,161 INFO L478 AbstractCegarLoop]: Abstraction has 534 states and 769 transitions. [2022-04-06 13:36:03,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 13:36:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 769 transitions. [2022-04-06 13:36:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 13:36:03,162 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:03,162 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:03,162 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-06 13:36:03,162 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:03,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1506717387, now seen corresponding path program 1 times [2022-04-06 13:36:03,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:03,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637924377] [2022-04-06 13:36:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:03,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:36:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:03,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:03,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637924377] [2022-04-06 13:36:03,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637924377] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:03,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:03,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:36:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280177208] [2022-04-06 13:36:03,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:03,310 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:36:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:36:03,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:03,312 INFO L87 Difference]: Start difference. First operand 534 states and 769 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:04,064 INFO L93 Difference]: Finished difference Result 587 states and 833 transitions. [2022-04-06 13:36:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:36:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-04-06 13:36:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:04,066 INFO L225 Difference]: With dead ends: 587 [2022-04-06 13:36:04,066 INFO L226 Difference]: Without dead ends: 555 [2022-04-06 13:36:04,067 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:36:04,067 INFO L913 BasicCegarLoop]: 240 mSDtfsCounter, 349 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:04,068 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 742 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:36:04,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-04-06 13:36:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 537. [2022-04-06 13:36:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 402 states have (on average 1.3432835820895523) internal successors, (540), 413 states have internal predecessors, (540), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-04-06 13:36:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 773 transitions. [2022-04-06 13:36:04,111 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 773 transitions. Word has length 51 [2022-04-06 13:36:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:04,111 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 773 transitions. [2022-04-06 13:36:04,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 773 transitions. [2022-04-06 13:36:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 13:36:04,112 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:04,112 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:04,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-06 13:36:04,112 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:04,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1791177556, now seen corresponding path program 1 times [2022-04-06 13:36:04,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:04,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515836448] [2022-04-06 13:36:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:04,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:36:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:04,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:04,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515836448] [2022-04-06 13:36:04,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515836448] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:04,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:04,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:04,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108657444] [2022-04-06 13:36:04,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:04,272 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:04,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:04,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:04,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:04,273 INFO L87 Difference]: Start difference. First operand 537 states and 773 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 13:36:05,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:05,111 INFO L93 Difference]: Finished difference Result 670 states and 993 transitions. [2022-04-06 13:36:05,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:05,112 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2022-04-06 13:36:05,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:05,115 INFO L225 Difference]: With dead ends: 670 [2022-04-06 13:36:05,115 INFO L226 Difference]: Without dead ends: 624 [2022-04-06 13:36:05,116 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:36:05,116 INFO L913 BasicCegarLoop]: 272 mSDtfsCounter, 536 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:05,116 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 859 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:36:05,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-04-06 13:36:05,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 529. [2022-04-06 13:36:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3350253807106598) internal successors, (526), 405 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-04-06 13:36:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 759 transitions. [2022-04-06 13:36:05,170 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 759 transitions. Word has length 51 [2022-04-06 13:36:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:05,170 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 759 transitions. [2022-04-06 13:36:05,171 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 13:36:05,171 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 759 transitions. [2022-04-06 13:36:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 13:36:05,171 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:05,171 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:05,171 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-06 13:36:05,172 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash -50366668, now seen corresponding path program 1 times [2022-04-06 13:36:05,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:05,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963042936] [2022-04-06 13:36:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:05,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:05,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:36:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:05,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:05,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963042936] [2022-04-06 13:36:05,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963042936] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:05,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:05,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 13:36:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763835702] [2022-04-06 13:36:05,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:05,288 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 13:36:05,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 13:36:05,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:36:05,289 INFO L87 Difference]: Start difference. First operand 529 states and 759 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:06,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:06,377 INFO L93 Difference]: Finished difference Result 714 states and 1095 transitions. [2022-04-06 13:36:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 13:36:06,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-04-06 13:36:06,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:06,381 INFO L225 Difference]: With dead ends: 714 [2022-04-06 13:36:06,381 INFO L226 Difference]: Without dead ends: 701 [2022-04-06 13:36:06,382 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:06,382 INFO L913 BasicCegarLoop]: 392 mSDtfsCounter, 241 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:06,382 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 766 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:36:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-04-06 13:36:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 524. [2022-04-06 13:36:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 390 states have (on average 1.3307692307692307) internal successors, (519), 400 states have internal predecessors, (519), 91 states have call successors, (91), 37 states have call predecessors, (91), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-04-06 13:36:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 751 transitions. [2022-04-06 13:36:06,430 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 751 transitions. Word has length 51 [2022-04-06 13:36:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:06,430 INFO L478 AbstractCegarLoop]: Abstraction has 524 states and 751 transitions. [2022-04-06 13:36:06,430 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 751 transitions. [2022-04-06 13:36:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 13:36:06,431 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:06,431 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:06,431 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-06 13:36:06,431 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:06,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1529813192, now seen corresponding path program 1 times [2022-04-06 13:36:06,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:06,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840673492] [2022-04-06 13:36:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:36:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:06,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840673492] [2022-04-06 13:36:06,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840673492] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:06,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:06,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:06,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180015026] [2022-04-06 13:36:06,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:06,630 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:06,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:06,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:06,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:06,630 INFO L87 Difference]: Start difference. First operand 524 states and 751 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:07,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:07,350 INFO L93 Difference]: Finished difference Result 547 states and 781 transitions. [2022-04-06 13:36:07,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:07,350 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-04-06 13:36:07,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:07,353 INFO L225 Difference]: With dead ends: 547 [2022-04-06 13:36:07,353 INFO L226 Difference]: Without dead ends: 543 [2022-04-06 13:36:07,353 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:07,354 INFO L913 BasicCegarLoop]: 253 mSDtfsCounter, 76 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:07,354 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1340 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:36:07,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-04-06 13:36:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2022-04-06 13:36:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 396 states have (on average 1.3282828282828283) internal successors, (526), 407 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-04-06 13:36:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 760 transitions. [2022-04-06 13:36:07,399 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 760 transitions. Word has length 52 [2022-04-06 13:36:07,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:07,399 INFO L478 AbstractCegarLoop]: Abstraction has 531 states and 760 transitions. [2022-04-06 13:36:07,399 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:07,399 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 760 transitions. [2022-04-06 13:36:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 13:36:07,399 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:07,400 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:07,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-06 13:36:07,400 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:07,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:07,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1529844936, now seen corresponding path program 1 times [2022-04-06 13:36:07,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:07,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488539390] [2022-04-06 13:36:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:07,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:36:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:07,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:07,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488539390] [2022-04-06 13:36:07,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488539390] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:07,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:07,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:07,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606898082] [2022-04-06 13:36:07,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:07,571 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:07,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:07,574 INFO L87 Difference]: Start difference. First operand 531 states and 760 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:08,235 INFO L93 Difference]: Finished difference Result 562 states and 797 transitions. [2022-04-06 13:36:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:36:08,235 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-04-06 13:36:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:08,238 INFO L225 Difference]: With dead ends: 562 [2022-04-06 13:36:08,238 INFO L226 Difference]: Without dead ends: 538 [2022-04-06 13:36:08,238 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:36:08,239 INFO L913 BasicCegarLoop]: 255 mSDtfsCounter, 138 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:08,239 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1427 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:36:08,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-04-06 13:36:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2022-04-06 13:36:08,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 395 states have (on average 1.3265822784810126) internal successors, (524), 406 states have internal predecessors, (524), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-04-06 13:36:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 758 transitions. [2022-04-06 13:36:08,283 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 758 transitions. Word has length 52 [2022-04-06 13:36:08,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:08,283 INFO L478 AbstractCegarLoop]: Abstraction has 530 states and 758 transitions. [2022-04-06 13:36:08,284 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:08,284 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 758 transitions. [2022-04-06 13:36:08,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 13:36:08,284 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:08,284 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:08,284 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-06 13:36:08,284 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:08,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1874017512, now seen corresponding path program 1 times [2022-04-06 13:36:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:08,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893624854] [2022-04-06 13:36:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:08,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:36:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 13:36:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:08,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:08,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893624854] [2022-04-06 13:36:08,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893624854] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:08,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:08,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:36:08,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629977453] [2022-04-06 13:36:08,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:08,411 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:36:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:08,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:36:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:08,412 INFO L87 Difference]: Start difference. First operand 530 states and 758 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:36:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:08,963 INFO L93 Difference]: Finished difference Result 955 states and 1439 transitions. [2022-04-06 13:36:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:08,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-04-06 13:36:08,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:08,967 INFO L225 Difference]: With dead ends: 955 [2022-04-06 13:36:08,967 INFO L226 Difference]: Without dead ends: 549 [2022-04-06 13:36:08,969 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:08,970 INFO L913 BasicCegarLoop]: 268 mSDtfsCounter, 188 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:08,970 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 704 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:36:08,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-04-06 13:36:09,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 529. [2022-04-06 13:36:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3197969543147208) internal successors, (520), 405 states have internal predecessors, (520), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-04-06 13:36:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 754 transitions. [2022-04-06 13:36:09,015 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 754 transitions. Word has length 58 [2022-04-06 13:36:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:09,016 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 754 transitions. [2022-04-06 13:36:09,016 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:36:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 754 transitions. [2022-04-06 13:36:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 13:36:09,016 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:09,017 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:09,017 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-06 13:36:09,017 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:09,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2132872221, now seen corresponding path program 1 times [2022-04-06 13:36:09,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:09,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193949186] [2022-04-06 13:36:09,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:09,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:36:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:09,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:09,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193949186] [2022-04-06 13:36:09,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193949186] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:09,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:09,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:36:09,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958187482] [2022-04-06 13:36:09,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:09,197 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:36:09,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:09,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:36:09,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:09,198 INFO L87 Difference]: Start difference. First operand 529 states and 754 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:10,081 INFO L93 Difference]: Finished difference Result 675 states and 1000 transitions. [2022-04-06 13:36:10,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:10,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-04-06 13:36:10,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:10,092 INFO L225 Difference]: With dead ends: 675 [2022-04-06 13:36:10,092 INFO L226 Difference]: Without dead ends: 639 [2022-04-06 13:36:10,093 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:10,093 INFO L913 BasicCegarLoop]: 336 mSDtfsCounter, 683 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:10,094 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 736 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:36:10,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-04-06 13:36:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 560. [2022-04-06 13:36:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 415 states have (on average 1.344578313253012) internal successors, (558), 426 states have internal predecessors, (558), 101 states have call successors, (101), 37 states have call predecessors, (101), 43 states have return successors, (165), 98 states have call predecessors, (165), 94 states have call successors, (165) [2022-04-06 13:36:10,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 824 transitions. [2022-04-06 13:36:10,145 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 824 transitions. Word has length 53 [2022-04-06 13:36:10,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:10,145 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 824 transitions. [2022-04-06 13:36:10,145 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:10,145 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 824 transitions. [2022-04-06 13:36:10,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 13:36:10,146 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:10,146 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:10,146 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-06 13:36:10,146 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash 983025775, now seen corresponding path program 1 times [2022-04-06 13:36:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:10,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739070611] [2022-04-06 13:36:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:10,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 13:36:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:10,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:10,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739070611] [2022-04-06 13:36:10,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739070611] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:10,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:10,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:36:10,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78391178] [2022-04-06 13:36:10,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:10,389 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:36:10,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:10,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:36:10,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:10,390 INFO L87 Difference]: Start difference. First operand 560 states and 824 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:36:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:11,068 INFO L93 Difference]: Finished difference Result 856 states and 1268 transitions. [2022-04-06 13:36:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:11,068 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-04-06 13:36:11,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:11,070 INFO L225 Difference]: With dead ends: 856 [2022-04-06 13:36:11,070 INFO L226 Difference]: Without dead ends: 390 [2022-04-06 13:36:11,073 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:36:11,074 INFO L913 BasicCegarLoop]: 251 mSDtfsCounter, 164 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:11,075 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 1423 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:36:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-04-06 13:36:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 338. [2022-04-06 13:36:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 246 states have (on average 1.2560975609756098) internal successors, (309), 254 states have internal predecessors, (309), 59 states have call successors, (59), 31 states have call predecessors, (59), 32 states have return successors, (74), 54 states have call predecessors, (74), 53 states have call successors, (74) [2022-04-06 13:36:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 442 transitions. [2022-04-06 13:36:11,111 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 442 transitions. Word has length 62 [2022-04-06 13:36:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:11,111 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 442 transitions. [2022-04-06 13:36:11,112 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:36:11,112 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 442 transitions. [2022-04-06 13:36:11,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 13:36:11,112 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:11,112 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:11,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-06 13:36:11,112 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:11,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1006609107, now seen corresponding path program 1 times [2022-04-06 13:36:11,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:11,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740052420] [2022-04-06 13:36:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:11,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:11,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:11,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740052420] [2022-04-06 13:36:11,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740052420] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:11,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:11,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151739247] [2022-04-06 13:36:11,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:11,301 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:11,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:11,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:11,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:11,302 INFO L87 Difference]: Start difference. First operand 338 states and 442 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:36:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:11,825 INFO L93 Difference]: Finished difference Result 346 states and 454 transitions. [2022-04-06 13:36:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:11,826 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-04-06 13:36:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:11,827 INFO L225 Difference]: With dead ends: 346 [2022-04-06 13:36:11,827 INFO L226 Difference]: Without dead ends: 304 [2022-04-06 13:36:11,827 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:11,828 INFO L913 BasicCegarLoop]: 227 mSDtfsCounter, 108 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:11,828 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1448 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:36:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-04-06 13:36:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2022-04-06 13:36:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 220 states have internal predecessors, (273), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-04-06 13:36:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 398 transitions. [2022-04-06 13:36:11,857 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 398 transitions. Word has length 58 [2022-04-06 13:36:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:11,857 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 398 transitions. [2022-04-06 13:36:11,857 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:36:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 398 transitions. [2022-04-06 13:36:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 13:36:11,858 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:11,858 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:11,858 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-06 13:36:11,858 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:11,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2058307499, now seen corresponding path program 1 times [2022-04-06 13:36:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:11,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184790493] [2022-04-06 13:36:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:11,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 13:36:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:12,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:12,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184790493] [2022-04-06 13:36:12,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184790493] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:12,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:12,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435259619] [2022-04-06 13:36:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:12,031 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:12,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:12,032 INFO L87 Difference]: Start difference. First operand 298 states and 398 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:36:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:12,606 INFO L93 Difference]: Finished difference Result 576 states and 798 transitions. [2022-04-06 13:36:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:12,607 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-04-06 13:36:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:12,609 INFO L225 Difference]: With dead ends: 576 [2022-04-06 13:36:12,609 INFO L226 Difference]: Without dead ends: 316 [2022-04-06 13:36:12,610 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:12,611 INFO L913 BasicCegarLoop]: 211 mSDtfsCounter, 287 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:12,611 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 782 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:36:12,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-04-06 13:36:12,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2022-04-06 13:36:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.266355140186916) internal successors, (271), 220 states have internal predecessors, (271), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-04-06 13:36:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 396 transitions. [2022-04-06 13:36:12,643 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 396 transitions. Word has length 67 [2022-04-06 13:36:12,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:12,643 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 396 transitions. [2022-04-06 13:36:12,643 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:36:12,644 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 396 transitions. [2022-04-06 13:36:12,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 13:36:12,644 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:12,644 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:12,644 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-06 13:36:12,644 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:12,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:12,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1216763617, now seen corresponding path program 1 times [2022-04-06 13:36:12,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:12,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789521893] [2022-04-06 13:36:12,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:12,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 13:36:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:12,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:12,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789521893] [2022-04-06 13:36:12,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789521893] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:12,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:12,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:12,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784940514] [2022-04-06 13:36:12,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:12,840 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:12,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:12,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:12,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:12,840 INFO L87 Difference]: Start difference. First operand 298 states and 396 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:36:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:13,182 INFO L93 Difference]: Finished difference Result 591 states and 822 transitions. [2022-04-06 13:36:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:13,183 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-04-06 13:36:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:13,185 INFO L225 Difference]: With dead ends: 591 [2022-04-06 13:36:13,185 INFO L226 Difference]: Without dead ends: 330 [2022-04-06 13:36:13,186 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:13,187 INFO L913 BasicCegarLoop]: 225 mSDtfsCounter, 155 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:13,187 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1091 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 13:36:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-04-06 13:36:13,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 303. [2022-04-06 13:36:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 218 states have (on average 1.261467889908257) internal successors, (275), 224 states have internal predecessors, (275), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2022-04-06 13:36:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 409 transitions. [2022-04-06 13:36:13,219 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 409 transitions. Word has length 68 [2022-04-06 13:36:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:13,220 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 409 transitions. [2022-04-06 13:36:13,220 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:36:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 409 transitions. [2022-04-06 13:36:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-06 13:36:13,221 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:13,221 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:13,221 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-06 13:36:13,221 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1023463232, now seen corresponding path program 1 times [2022-04-06 13:36:13,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:13,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196644542] [2022-04-06 13:36:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:13,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 13:36:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:13,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:13,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196644542] [2022-04-06 13:36:13,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196644542] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:13,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:13,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:36:13,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303029661] [2022-04-06 13:36:13,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:13,380 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:36:13,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:13,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:36:13,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:13,381 INFO L87 Difference]: Start difference. First operand 303 states and 409 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:36:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:13,762 INFO L93 Difference]: Finished difference Result 477 states and 678 transitions. [2022-04-06 13:36:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:13,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 70 [2022-04-06 13:36:13,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:13,764 INFO L225 Difference]: With dead ends: 477 [2022-04-06 13:36:13,764 INFO L226 Difference]: Without dead ends: 474 [2022-04-06 13:36:13,765 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:13,765 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 277 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:13,765 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 793 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 13:36:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-04-06 13:36:13,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 307. [2022-04-06 13:36:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 222 states have (on average 1.2657657657657657) internal successors, (281), 228 states have internal predecessors, (281), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2022-04-06 13:36:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 415 transitions. [2022-04-06 13:36:13,801 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 415 transitions. Word has length 70 [2022-04-06 13:36:13,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:13,801 INFO L478 AbstractCegarLoop]: Abstraction has 307 states and 415 transitions. [2022-04-06 13:36:13,801 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:36:13,802 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 415 transitions. [2022-04-06 13:36:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 13:36:13,802 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:13,802 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:13,802 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-06 13:36:13,802 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1693422670, now seen corresponding path program 1 times [2022-04-06 13:36:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:13,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876502213] [2022-04-06 13:36:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:13,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 13:36:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:13,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:13,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876502213] [2022-04-06 13:36:13,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876502213] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:13,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:13,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:36:13,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39340736] [2022-04-06 13:36:13,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:13,948 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:36:13,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:13,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:36:13,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:13,949 INFO L87 Difference]: Start difference. First operand 307 states and 415 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:36:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:14,433 INFO L93 Difference]: Finished difference Result 793 states and 1161 transitions. [2022-04-06 13:36:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:14,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-04-06 13:36:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:14,436 INFO L225 Difference]: With dead ends: 793 [2022-04-06 13:36:14,436 INFO L226 Difference]: Without dead ends: 529 [2022-04-06 13:36:14,437 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:14,438 INFO L913 BasicCegarLoop]: 253 mSDtfsCounter, 373 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:14,438 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 743 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:36:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-04-06 13:36:14,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 490. [2022-04-06 13:36:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 357 states have (on average 1.2913165266106443) internal successors, (461), 366 states have internal predecessors, (461), 89 states have call successors, (89), 35 states have call predecessors, (89), 43 states have return successors, (153), 89 states have call predecessors, (153), 85 states have call successors, (153) [2022-04-06 13:36:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2022-04-06 13:36:14,498 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 71 [2022-04-06 13:36:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:14,498 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2022-04-06 13:36:14,498 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:36:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2022-04-06 13:36:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 13:36:14,499 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:14,499 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:14,499 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-06 13:36:14,499 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:14,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:14,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2035760571, now seen corresponding path program 1 times [2022-04-06 13:36:14,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:14,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435947808] [2022-04-06 13:36:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:14,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:14,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:14,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:14,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 13:36:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:14,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:14,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:14,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435947808] [2022-04-06 13:36:14,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435947808] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:14,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:14,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:36:14,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988522527] [2022-04-06 13:36:14,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:14,720 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:36:14,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:36:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:14,720 INFO L87 Difference]: Start difference. First operand 490 states and 703 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-06 13:36:15,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:15,342 INFO L93 Difference]: Finished difference Result 942 states and 1393 transitions. [2022-04-06 13:36:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:15,342 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2022-04-06 13:36:15,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:15,345 INFO L225 Difference]: With dead ends: 942 [2022-04-06 13:36:15,345 INFO L226 Difference]: Without dead ends: 493 [2022-04-06 13:36:15,347 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:36:15,347 INFO L913 BasicCegarLoop]: 238 mSDtfsCounter, 96 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:15,347 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1299 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:36:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-04-06 13:36:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 484. [2022-04-06 13:36:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 353 states have (on average 1.2832861189801699) internal successors, (453), 361 states have internal predecessors, (453), 88 states have call successors, (88), 35 states have call predecessors, (88), 42 states have return successors, (146), 88 states have call predecessors, (146), 84 states have call successors, (146) [2022-04-06 13:36:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 687 transitions. [2022-04-06 13:36:15,394 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 687 transitions. Word has length 72 [2022-04-06 13:36:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:15,394 INFO L478 AbstractCegarLoop]: Abstraction has 484 states and 687 transitions. [2022-04-06 13:36:15,394 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-06 13:36:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 687 transitions. [2022-04-06 13:36:15,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-04-06 13:36:15,399 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:15,399 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:15,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-06 13:36:15,399 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:15,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1777696599, now seen corresponding path program 1 times [2022-04-06 13:36:15,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:15,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716149823] [2022-04-06 13:36:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:15,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 13:36:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 13:36:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:15,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:15,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716149823] [2022-04-06 13:36:15,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716149823] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:15,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:15,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995284237] [2022-04-06 13:36:15,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:15,612 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:15,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:15,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:15,614 INFO L87 Difference]: Start difference. First operand 484 states and 687 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 13:36:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:16,264 INFO L93 Difference]: Finished difference Result 869 states and 1255 transitions. [2022-04-06 13:36:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:16,265 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-04-06 13:36:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:16,267 INFO L225 Difference]: With dead ends: 869 [2022-04-06 13:36:16,267 INFO L226 Difference]: Without dead ends: 450 [2022-04-06 13:36:16,269 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:36:16,269 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 232 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:16,269 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 999 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:36:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-04-06 13:36:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2022-04-06 13:36:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 320 states have (on average 1.296875) internal successors, (415), 329 states have internal predecessors, (415), 79 states have call successors, (79), 33 states have call predecessors, (79), 36 states have return successors, (110), 74 states have call predecessors, (110), 75 states have call successors, (110) [2022-04-06 13:36:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 604 transitions. [2022-04-06 13:36:16,312 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 604 transitions. Word has length 83 [2022-04-06 13:36:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:16,312 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 604 transitions. [2022-04-06 13:36:16,312 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 13:36:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 604 transitions. [2022-04-06 13:36:16,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-04-06 13:36:16,313 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:16,313 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:16,313 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-06 13:36:16,313 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1836701912, now seen corresponding path program 1 times [2022-04-06 13:36:16,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:16,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938670532] [2022-04-06 13:36:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:16,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-06 13:36:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:16,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:16,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938670532] [2022-04-06 13:36:16,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938670532] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:16,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:16,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-06 13:36:16,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319431842] [2022-04-06 13:36:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:16,697 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 13:36:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:16,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 13:36:16,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-04-06 13:36:16,697 INFO L87 Difference]: Start difference. First operand 436 states and 604 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-06 13:36:17,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:17,337 INFO L93 Difference]: Finished difference Result 486 states and 681 transitions. [2022-04-06 13:36:17,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:36:17,337 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-04-06 13:36:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:17,339 INFO L225 Difference]: With dead ends: 486 [2022-04-06 13:36:17,339 INFO L226 Difference]: Without dead ends: 461 [2022-04-06 13:36:17,340 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-04-06 13:36:17,340 INFO L913 BasicCegarLoop]: 237 mSDtfsCounter, 147 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:17,340 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 2685 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:36:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-04-06 13:36:17,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 447. [2022-04-06 13:36:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 329 states have (on average 1.2887537993920972) internal successors, (424), 339 states have internal predecessors, (424), 79 states have call successors, (79), 33 states have call predecessors, (79), 38 states have return successors, (116), 75 states have call predecessors, (116), 75 states have call successors, (116) [2022-04-06 13:36:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2022-04-06 13:36:17,376 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 92 [2022-04-06 13:36:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:17,376 INFO L478 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2022-04-06 13:36:17,376 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-06 13:36:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2022-04-06 13:36:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-06 13:36:17,377 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:17,377 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:17,377 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-06 13:36:17,377 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:17,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:17,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1857542518, now seen corresponding path program 1 times [2022-04-06 13:36:17,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:17,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509292696] [2022-04-06 13:36:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:17,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 13:36:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:17,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509292696] [2022-04-06 13:36:17,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509292696] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:17,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:17,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-06 13:36:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985774330] [2022-04-06 13:36:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:17,719 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 13:36:17,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 13:36:17,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-04-06 13:36:17,720 INFO L87 Difference]: Start difference. First operand 447 states and 619 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-06 13:36:18,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:18,509 INFO L93 Difference]: Finished difference Result 484 states and 677 transitions. [2022-04-06 13:36:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:36:18,509 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-04-06 13:36:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:18,511 INFO L225 Difference]: With dead ends: 484 [2022-04-06 13:36:18,511 INFO L226 Difference]: Without dead ends: 459 [2022-04-06 13:36:18,511 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-04-06 13:36:18,512 INFO L913 BasicCegarLoop]: 249 mSDtfsCounter, 153 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:18,512 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 2896 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:36:18,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-04-06 13:36:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-04-06 13:36:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 319 states have (on average 1.297805642633229) internal successors, (414), 328 states have internal predecessors, (414), 78 states have call successors, (78), 33 states have call predecessors, (78), 36 states have return successors, (108), 73 states have call predecessors, (108), 74 states have call successors, (108) [2022-04-06 13:36:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 600 transitions. [2022-04-06 13:36:18,551 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 600 transitions. Word has length 93 [2022-04-06 13:36:18,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:18,551 INFO L478 AbstractCegarLoop]: Abstraction has 434 states and 600 transitions. [2022-04-06 13:36:18,551 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-06 13:36:18,551 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 600 transitions. [2022-04-06 13:36:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-06 13:36:18,552 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:18,552 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:18,553 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-06 13:36:18,553 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:18,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1054192149, now seen corresponding path program 1 times [2022-04-06 13:36:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:18,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412190752] [2022-04-06 13:36:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:18,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 13:36:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 13:36:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:18,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:18,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412190752] [2022-04-06 13:36:18,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412190752] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:18,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:18,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-06 13:36:18,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015228890] [2022-04-06 13:36:18,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:18,973 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 13:36:18,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:18,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 13:36:18,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-04-06 13:36:18,974 INFO L87 Difference]: Start difference. First operand 434 states and 600 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-06 13:36:20,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:20,326 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2022-04-06 13:36:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-06 13:36:20,326 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2022-04-06 13:36:20,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:20,327 INFO L225 Difference]: With dead ends: 470 [2022-04-06 13:36:20,328 INFO L226 Difference]: Without dead ends: 434 [2022-04-06 13:36:20,328 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2022-04-06 13:36:20,328 INFO L913 BasicCegarLoop]: 210 mSDtfsCounter, 363 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:20,328 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 794 Invalid, 3049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2840 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:36:20,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-04-06 13:36:20,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 424. [2022-04-06 13:36:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 313 states have (on average 1.3003194888178913) internal successors, (407), 322 states have internal predecessors, (407), 75 states have call successors, (75), 32 states have call predecessors, (75), 35 states have return successors, (105), 70 states have call predecessors, (105), 71 states have call successors, (105) [2022-04-06 13:36:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 587 transitions. [2022-04-06 13:36:20,362 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 587 transitions. Word has length 103 [2022-04-06 13:36:20,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:20,362 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 587 transitions. [2022-04-06 13:36:20,362 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-06 13:36:20,362 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 587 transitions. [2022-04-06 13:36:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-04-06 13:36:20,363 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:20,363 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:20,363 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-06 13:36:20,363 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1385513232, now seen corresponding path program 1 times [2022-04-06 13:36:20,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:20,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481494927] [2022-04-06 13:36:20,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:20,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-06 13:36:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-06 13:36:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 13:36:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:20,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481494927] [2022-04-06 13:36:20,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481494927] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:20,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:20,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-06 13:36:20,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366031502] [2022-04-06 13:36:20,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:20,787 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-06 13:36:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:20,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-06 13:36:20,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-04-06 13:36:20,789 INFO L87 Difference]: Start difference. First operand 424 states and 587 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 13:36:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:21,677 INFO L93 Difference]: Finished difference Result 481 states and 679 transitions. [2022-04-06 13:36:21,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-06 13:36:21,678 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2022-04-06 13:36:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:21,680 INFO L225 Difference]: With dead ends: 481 [2022-04-06 13:36:21,680 INFO L226 Difference]: Without dead ends: 454 [2022-04-06 13:36:21,681 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 13:36:21,681 INFO L913 BasicCegarLoop]: 200 mSDtfsCounter, 139 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:21,681 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 2180 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:36:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-04-06 13:36:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 440. [2022-04-06 13:36:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 324 states have (on average 1.2901234567901234) internal successors, (418), 334 states have internal predecessors, (418), 78 states have call successors, (78), 32 states have call predecessors, (78), 37 states have return successors, (114), 74 states have call predecessors, (114), 73 states have call successors, (114) [2022-04-06 13:36:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 610 transitions. [2022-04-06 13:36:21,725 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 610 transitions. Word has length 108 [2022-04-06 13:36:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:21,726 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 610 transitions. [2022-04-06 13:36:21,726 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 13:36:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 610 transitions. [2022-04-06 13:36:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-04-06 13:36:21,727 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:21,727 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:21,727 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-06 13:36:21,727 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:21,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:21,727 INFO L85 PathProgramCache]: Analyzing trace with hash -205451642, now seen corresponding path program 1 times [2022-04-06 13:36:21,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:21,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371444351] [2022-04-06 13:36:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:21,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:21,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:22,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:22,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:22,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 13:36:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:22,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 13:36:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:22,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-06 13:36:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:22,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:22,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371444351] [2022-04-06 13:36:22,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371444351] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:22,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:22,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-06 13:36:22,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957863911] [2022-04-06 13:36:22,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:22,131 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-06 13:36:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:22,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-06 13:36:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-04-06 13:36:22,132 INFO L87 Difference]: Start difference. First operand 440 states and 610 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 13:36:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:23,305 INFO L93 Difference]: Finished difference Result 483 states and 677 transitions. [2022-04-06 13:36:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-06 13:36:23,306 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2022-04-06 13:36:23,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:23,308 INFO L225 Difference]: With dead ends: 483 [2022-04-06 13:36:23,308 INFO L226 Difference]: Without dead ends: 443 [2022-04-06 13:36:23,309 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 13:36:23,309 INFO L913 BasicCegarLoop]: 238 mSDtfsCounter, 139 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:23,309 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 2702 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:36:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-04-06 13:36:23,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 413. [2022-04-06 13:36:23,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 304 states have (on average 1.2664473684210527) internal successors, (385), 312 states have internal predecessors, (385), 75 states have call successors, (75), 32 states have call predecessors, (75), 33 states have return successors, (97), 69 states have call predecessors, (97), 70 states have call successors, (97) [2022-04-06 13:36:23,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 557 transitions. [2022-04-06 13:36:23,350 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 557 transitions. Word has length 109 [2022-04-06 13:36:23,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:23,350 INFO L478 AbstractCegarLoop]: Abstraction has 413 states and 557 transitions. [2022-04-06 13:36:23,350 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 13:36:23,350 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 557 transitions. [2022-04-06 13:36:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-04-06 13:36:23,351 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:23,351 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:23,351 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-06 13:36:23,352 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:23,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:23,352 INFO L85 PathProgramCache]: Analyzing trace with hash -790809002, now seen corresponding path program 1 times [2022-04-06 13:36:23,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:23,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167952567] [2022-04-06 13:36:23,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:23,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 13:36:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 13:36:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:36:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:36:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-04-06 13:36:23,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:23,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167952567] [2022-04-06 13:36:23,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167952567] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:23,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:23,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:23,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127351792] [2022-04-06 13:36:23,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:23,572 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:23,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:23,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:23,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:23,572 INFO L87 Difference]: Start difference. First operand 413 states and 557 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-04-06 13:36:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:24,062 INFO L93 Difference]: Finished difference Result 734 states and 984 transitions. [2022-04-06 13:36:24,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:24,063 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2022-04-06 13:36:24,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:24,065 INFO L225 Difference]: With dead ends: 734 [2022-04-06 13:36:24,065 INFO L226 Difference]: Without dead ends: 420 [2022-04-06 13:36:24,066 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:24,066 INFO L913 BasicCegarLoop]: 217 mSDtfsCounter, 172 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:24,067 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1046 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:36:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-04-06 13:36:24,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 408. [2022-04-06 13:36:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 302 states have (on average 1.2483443708609272) internal successors, (377), 309 states have internal predecessors, (377), 71 states have call successors, (71), 32 states have call predecessors, (71), 34 states have return successors, (92), 67 states have call predecessors, (92), 66 states have call successors, (92) [2022-04-06 13:36:24,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 540 transitions. [2022-04-06 13:36:24,107 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 540 transitions. Word has length 121 [2022-04-06 13:36:24,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:24,107 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 540 transitions. [2022-04-06 13:36:24,107 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-04-06 13:36:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 540 transitions. [2022-04-06 13:36:24,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-04-06 13:36:24,108 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:24,108 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:24,108 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-06 13:36:24,108 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:24,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:24,109 INFO L85 PathProgramCache]: Analyzing trace with hash -474317813, now seen corresponding path program 1 times [2022-04-06 13:36:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:24,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166951982] [2022-04-06 13:36:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:24,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 13:36:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 13:36:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:36:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:36:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-04-06 13:36:24,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:24,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166951982] [2022-04-06 13:36:24,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166951982] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:24,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:24,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:24,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994639021] [2022-04-06 13:36:24,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:24,394 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:24,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:24,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:24,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:24,396 INFO L87 Difference]: Start difference. First operand 408 states and 540 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-04-06 13:36:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:24,991 INFO L93 Difference]: Finished difference Result 592 states and 836 transitions. [2022-04-06 13:36:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:24,992 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2022-04-06 13:36:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:24,994 INFO L225 Difference]: With dead ends: 592 [2022-04-06 13:36:24,994 INFO L226 Difference]: Without dead ends: 547 [2022-04-06 13:36:24,994 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:24,995 INFO L913 BasicCegarLoop]: 274 mSDtfsCounter, 167 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:24,995 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1515 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:36:24,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-04-06 13:36:25,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 399. [2022-04-06 13:36:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 294 states have (on average 1.248299319727891) internal successors, (367), 301 states have internal predecessors, (367), 71 states have call successors, (71), 32 states have call predecessors, (71), 33 states have return successors, (91), 66 states have call predecessors, (91), 66 states have call successors, (91) [2022-04-06 13:36:25,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 529 transitions. [2022-04-06 13:36:25,035 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 529 transitions. Word has length 122 [2022-04-06 13:36:25,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:25,035 INFO L478 AbstractCegarLoop]: Abstraction has 399 states and 529 transitions. [2022-04-06 13:36:25,035 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-04-06 13:36:25,035 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 529 transitions. [2022-04-06 13:36:25,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-04-06 13:36:25,036 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:25,036 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:25,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-04-06 13:36:25,036 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:25,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:25,037 INFO L85 PathProgramCache]: Analyzing trace with hash -286096315, now seen corresponding path program 1 times [2022-04-06 13:36:25,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:25,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349283619] [2022-04-06 13:36:25,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:25,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 13:36:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 13:36:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-06 13:36:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:36:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:25,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:25,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:25,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349283619] [2022-04-06 13:36:25,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349283619] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:25,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:25,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-06 13:36:25,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137763082] [2022-04-06 13:36:25,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:25,485 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-06 13:36:25,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:25,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-06 13:36:25,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-04-06 13:36:25,486 INFO L87 Difference]: Start difference. First operand 399 states and 529 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-06 13:36:26,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:26,976 INFO L93 Difference]: Finished difference Result 416 states and 551 transitions. [2022-04-06 13:36:26,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-06 13:36:26,977 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 119 [2022-04-06 13:36:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:26,978 INFO L225 Difference]: With dead ends: 416 [2022-04-06 13:36:26,978 INFO L226 Difference]: Without dead ends: 354 [2022-04-06 13:36:26,979 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=262, Invalid=1718, Unknown=0, NotChecked=0, Total=1980 [2022-04-06 13:36:26,979 INFO L913 BasicCegarLoop]: 178 mSDtfsCounter, 401 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:26,979 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 496 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:36:26,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-04-06 13:36:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 341. [2022-04-06 13:36:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.18) internal successors, (295), 255 states have internal predecessors, (295), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2022-04-06 13:36:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 436 transitions. [2022-04-06 13:36:27,012 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 436 transitions. Word has length 119 [2022-04-06 13:36:27,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:27,012 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 436 transitions. [2022-04-06 13:36:27,012 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-06 13:36:27,013 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 436 transitions. [2022-04-06 13:36:27,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-04-06 13:36:27,014 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:27,014 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-04-06 13:36:27,014 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-04-06 13:36:27,014 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:27,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:27,014 INFO L85 PathProgramCache]: Analyzing trace with hash 762913287, now seen corresponding path program 1 times [2022-04-06 13:36:27,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:27,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109714914] [2022-04-06 13:36:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:27,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 13:36:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 13:36:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:36:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:36:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 13:36:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-06 13:36:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-06 13:36:27,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:27,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109714914] [2022-04-06 13:36:27,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109714914] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 13:36:27,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975434454] [2022-04-06 13:36:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:27,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 13:36:27,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 13:36:27,275 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) [2022-04-06 13:36:27,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 13:36:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:27,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 13:36:27,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 13:36:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-04-06 13:36:27,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 13:36:27,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975434454] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:27,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 13:36:27,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-04-06 13:36:27,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100183261] [2022-04-06 13:36:27,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:27,855 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 13:36:27,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:27,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 13:36:27,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:27,856 INFO L87 Difference]: Start difference. First operand 341 states and 436 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 13:36:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:27,909 INFO L93 Difference]: Finished difference Result 352 states and 447 transitions. [2022-04-06 13:36:27,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 13:36:27,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 163 [2022-04-06 13:36:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:27,912 INFO L225 Difference]: With dead ends: 352 [2022-04-06 13:36:27,912 INFO L226 Difference]: Without dead ends: 341 [2022-04-06 13:36:27,914 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:27,920 INFO L913 BasicCegarLoop]: 173 mSDtfsCounter, 28 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:27,921 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 301 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 13:36:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-04-06 13:36:27,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-04-06 13:36:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.172) internal successors, (293), 255 states have internal predecessors, (293), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2022-04-06 13:36:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 434 transitions. [2022-04-06 13:36:27,964 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 434 transitions. Word has length 163 [2022-04-06 13:36:27,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:27,965 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 434 transitions. [2022-04-06 13:36:27,965 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 13:36:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 434 transitions. [2022-04-06 13:36:27,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-04-06 13:36:27,967 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:27,967 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-04-06 13:36:27,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 13:36:28,182 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-04-06 13:36:28,183 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:28,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:28,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1424868086, now seen corresponding path program 1 times [2022-04-06 13:36:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:28,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614827337] [2022-04-06 13:36:28,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:28,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 13:36:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 13:36:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:36:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:36:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 13:36:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-06 13:36:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-06 13:36:28,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:28,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614827337] [2022-04-06 13:36:28,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614827337] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 13:36:28,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819969156] [2022-04-06 13:36:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:28,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 13:36:28,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 13:36:28,464 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) [2022-04-06 13:36:28,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 13:36:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 13:36:28,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 13:36:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-04-06 13:36:28,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 13:36:28,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819969156] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:28,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 13:36:28,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 15 [2022-04-06 13:36:28,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140716619] [2022-04-06 13:36:28,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:28,979 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:36:28,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:36:28,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:28,980 INFO L87 Difference]: Start difference. First operand 341 states and 434 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-04-06 13:36:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:29,070 INFO L93 Difference]: Finished difference Result 630 states and 816 transitions. [2022-04-06 13:36:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:36:29,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2022-04-06 13:36:29,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:29,072 INFO L225 Difference]: With dead ends: 630 [2022-04-06 13:36:29,072 INFO L226 Difference]: Without dead ends: 372 [2022-04-06 13:36:29,073 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:29,073 INFO L913 BasicCegarLoop]: 171 mSDtfsCounter, 12 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:29,073 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 821 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 13:36:29,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-04-06 13:36:29,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 361. [2022-04-06 13:36:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 268 states have (on average 1.1604477611940298) internal successors, (311), 273 states have internal predecessors, (311), 64 states have call successors, (64), 29 states have call predecessors, (64), 28 states have return successors, (88), 58 states have call predecessors, (88), 58 states have call successors, (88) [2022-04-06 13:36:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 463 transitions. [2022-04-06 13:36:29,111 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 463 transitions. Word has length 163 [2022-04-06 13:36:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:29,112 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 463 transitions. [2022-04-06 13:36:29,112 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-04-06 13:36:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 463 transitions. [2022-04-06 13:36:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-04-06 13:36:29,113 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:29,113 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-04-06 13:36:29,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-06 13:36:29,327 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-04-06 13:36:29,327 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:29,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:29,328 INFO L85 PathProgramCache]: Analyzing trace with hash -589316084, now seen corresponding path program 1 times [2022-04-06 13:36:29,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:29,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117606328] [2022-04-06 13:36:29,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:29,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 13:36:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 13:36:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:36:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:36:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 13:36:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-06 13:36:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-04-06 13:36:29,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:29,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117606328] [2022-04-06 13:36:29,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117606328] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:29,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:29,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:29,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061911320] [2022-04-06 13:36:29,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:29,614 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:29,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:29,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:29,614 INFO L87 Difference]: Start difference. First operand 361 states and 463 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-06 13:36:30,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:30,447 INFO L93 Difference]: Finished difference Result 655 states and 841 transitions. [2022-04-06 13:36:30,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:30,451 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 164 [2022-04-06 13:36:30,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:30,454 INFO L225 Difference]: With dead ends: 655 [2022-04-06 13:36:30,454 INFO L226 Difference]: Without dead ends: 428 [2022-04-06 13:36:30,455 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:30,456 INFO L913 BasicCegarLoop]: 215 mSDtfsCounter, 115 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:30,457 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1240 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:36:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-04-06 13:36:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 345. [2022-04-06 13:36:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 256 states have (on average 1.14453125) internal successors, (293), 260 states have internal predecessors, (293), 60 states have call successors, (60), 29 states have call predecessors, (60), 28 states have return successors, (80), 55 states have call predecessors, (80), 54 states have call successors, (80) [2022-04-06 13:36:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 433 transitions. [2022-04-06 13:36:30,520 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 433 transitions. Word has length 164 [2022-04-06 13:36:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:30,520 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 433 transitions. [2022-04-06 13:36:30,521 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-06 13:36:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 433 transitions. [2022-04-06 13:36:30,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-04-06 13:36:30,523 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:30,523 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-04-06 13:36:30,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-04-06 13:36:30,523 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash -158276280, now seen corresponding path program 1 times [2022-04-06 13:36:30,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:30,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251948394] [2022-04-06 13:36:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:30,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 13:36:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 13:36:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:36:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:36:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 13:36:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-06 13:36:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-06 13:36:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-06 13:36:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-04-06 13:36:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:30,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251948394] [2022-04-06 13:36:30,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251948394] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:30,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:30,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:30,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924127243] [2022-04-06 13:36:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:30,821 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:30,822 INFO L87 Difference]: Start difference. First operand 345 states and 433 transitions. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-04-06 13:36:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:31,233 INFO L93 Difference]: Finished difference Result 443 states and 558 transitions. [2022-04-06 13:36:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:31,234 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 204 [2022-04-06 13:36:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:31,235 INFO L225 Difference]: With dead ends: 443 [2022-04-06 13:36:31,235 INFO L226 Difference]: Without dead ends: 354 [2022-04-06 13:36:31,236 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:31,236 INFO L913 BasicCegarLoop]: 191 mSDtfsCounter, 237 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:31,236 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 897 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 13:36:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-04-06 13:36:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 309. [2022-04-06 13:36:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 231 states have (on average 1.1255411255411256) internal successors, (260), 234 states have internal predecessors, (260), 52 states have call successors, (52), 24 states have call predecessors, (52), 25 states have return successors, (73), 50 states have call predecessors, (73), 47 states have call successors, (73) [2022-04-06 13:36:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 385 transitions. [2022-04-06 13:36:31,265 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 385 transitions. Word has length 204 [2022-04-06 13:36:31,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:31,266 INFO L478 AbstractCegarLoop]: Abstraction has 309 states and 385 transitions. [2022-04-06 13:36:31,266 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-04-06 13:36:31,266 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 385 transitions. [2022-04-06 13:36:31,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-04-06 13:36:31,267 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:31,268 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:31,268 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-04-06 13:36:31,268 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1341132510, now seen corresponding path program 1 times [2022-04-06 13:36:31,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:31,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738227052] [2022-04-06 13:36:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:31,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 13:36:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 13:36:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 13:36:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:36:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 13:36:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-06 13:36:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-06 13:36:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-06 13:36:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:36:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-04-06 13:36:31,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:31,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738227052] [2022-04-06 13:36:31,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738227052] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:31,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:31,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:31,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112548197] [2022-04-06 13:36:31,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:31,558 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:31,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:31,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:31,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:31,559 INFO L87 Difference]: Start difference. First operand 309 states and 385 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-04-06 13:36:31,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:31,959 INFO L93 Difference]: Finished difference Result 315 states and 397 transitions. [2022-04-06 13:36:31,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:31,959 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 207 [2022-04-06 13:36:31,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:31,960 INFO L225 Difference]: With dead ends: 315 [2022-04-06 13:36:31,960 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 13:36:31,961 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:31,962 INFO L913 BasicCegarLoop]: 153 mSDtfsCounter, 117 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:31,962 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 673 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 13:36:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 13:36:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 13:36:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 13:36:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 13:36:31,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2022-04-06 13:36:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:31,963 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 13:36:31,963 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-04-06 13:36:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 13:36:31,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 13:36:31,964 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 13:36:31,965 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-04-06 13:36:31,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.