/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:30:48,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:30:48,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:30:48,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:30:48,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:30:48,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:30:48,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:30:48,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:30:48,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:30:48,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:30:48,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:30:48,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:30:48,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:30:48,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:30:48,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:30:48,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:30:48,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:30:48,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:30:48,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:30:48,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:30:48,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:30:48,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:30:48,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:30:48,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:30:48,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:30:48,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:30:48,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:30:48,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:30:48,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:30:48,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:30:48,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:30:48,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:30:48,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:30:48,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:30:48,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:30:48,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:30:48,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:30:48,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:30:48,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:30:48,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:30:48,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:30:48,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:30:48,513 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:30:48,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:30:48,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:30:48,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:30:48,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:30:48,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:30:48,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:30:48,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:30:48,516 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:30:48,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:30:48,517 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:30:48,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:30:48,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:30:48,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:30:48,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:30:48,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:30:48,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:30:48,517 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:30:48,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:30:48,518 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:30:48,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:30:48,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:30:48,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:30:48,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:30:48,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:30:48,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:30:48,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:30:48,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:30:48,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:30:48,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:30:48,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:30:48,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:30:48,519 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:30:48,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:30:48,520 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:30:48,520 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:30:48,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:30:48,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:30:48,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:30:48,770 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:30:48,770 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:30:48,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2023-03-31 01:30:50,050 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:30:50,240 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:30:50,241 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2023-03-31 01:30:50,247 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d8d19a38/cdfde705fbf44ba68e9ad5f7855e12d3/FLAG662d65e70 [2023-03-31 01:30:50,260 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d8d19a38/cdfde705fbf44ba68e9ad5f7855e12d3 [2023-03-31 01:30:50,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:30:50,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:30:50,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:30:50,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:30:50,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:30:50,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643cda26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50, skipping insertion in model container [2023-03-31 01:30:50,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:30:50,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:30:50,470 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2023-03-31 01:30:50,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:30:50,485 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:30:50,519 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2023-03-31 01:30:50,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:30:50,533 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:30:50,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50 WrapperNode [2023-03-31 01:30:50,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:30:50,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:30:50,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:30:50,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:30:50,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,590 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:30:50,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:30:50,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:30:50,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:30:50,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50" (1/1) ... [2023-03-31 01:30:50,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:30:50,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:30:50,627 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) [2023-03-31 01:30:50,629 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 [2023-03-31 01:30:50,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:30:50,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:30:50,672 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:30:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-03-31 01:30:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-03-31 01:30:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-03-31 01:30:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-03-31 01:30:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-03-31 01:30:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:30:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-03-31 01:30:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:30:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:30:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:30:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:30:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:30:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:30:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:30:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:30:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:30:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:30:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:30:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:30:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:30:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:30:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:30:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:30:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:30:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:30:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:30:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:30:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:30:50,766 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:30:50,769 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:30:51,198 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:30:51,205 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:30:51,205 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 01:30:51,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:30:51 BoogieIcfgContainer [2023-03-31 01:30:51,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:30:51,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:30:51,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:30:51,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:30:51,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:30:50" (1/3) ... [2023-03-31 01:30:51,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44df16a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:30:51, skipping insertion in model container [2023-03-31 01:30:51,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:30:50" (2/3) ... [2023-03-31 01:30:51,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44df16a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:30:51, skipping insertion in model container [2023-03-31 01:30:51,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:30:51" (3/3) ... [2023-03-31 01:30:51,216 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2023-03-31 01:30:51,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:30:51,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:30:51,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:30:51,340 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5932339f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:30:51,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:30:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 75 states have (on average 1.6) internal successors, (120), 76 states have internal predecessors, (120), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-31 01:30:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-03-31 01:30:51,357 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:51,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:51,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:51,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:51,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1459885052, now seen corresponding path program 1 times [2023-03-31 01:30:51,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:51,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930429057] [2023-03-31 01:30:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:51,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:51,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:51,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:30:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:51,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-31 01:30:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:51,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:30:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:30:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:51,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:51,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930429057] [2023-03-31 01:30:51,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930429057] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:51,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:51,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:30:51,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28202443] [2023-03-31 01:30:51,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:51,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:30:51,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:30:51,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:30:51,964 INFO L87 Difference]: Start difference. First operand has 93 states, 75 states have (on average 1.6) internal successors, (120), 76 states have internal predecessors, (120), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 01:30:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:52,424 INFO L93 Difference]: Finished difference Result 159 states and 228 transitions. [2023-03-31 01:30:52,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:30:52,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-03-31 01:30:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:52,434 INFO L225 Difference]: With dead ends: 159 [2023-03-31 01:30:52,435 INFO L226 Difference]: Without dead ends: 91 [2023-03-31 01:30:52,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:30:52,448 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 332 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:52,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 65 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:30:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-03-31 01:30:52,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2023-03-31 01:30:52,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 72 states have (on average 1.5694444444444444) internal successors, (113), 72 states have internal predecessors, (113), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 01:30:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 128 transitions. [2023-03-31 01:30:52,504 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 128 transitions. Word has length 49 [2023-03-31 01:30:52,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:30:52,505 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 128 transitions. [2023-03-31 01:30:52,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 01:30:52,505 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 128 transitions. [2023-03-31 01:30:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-03-31 01:30:52,510 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:52,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:52,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:30:52,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:52,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1065518266, now seen corresponding path program 1 times [2023-03-31 01:30:52,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:52,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728700401] [2023-03-31 01:30:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:52,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:52,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 01:30:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:52,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-31 01:30:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:52,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 01:30:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:52,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-03-31 01:30:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:52,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:52,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728700401] [2023-03-31 01:30:52,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728700401] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:52,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:52,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:30:52,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351277381] [2023-03-31 01:30:52,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:30:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:30:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:30:52,929 INFO L87 Difference]: Start difference. First operand 88 states and 128 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 01:30:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:53,695 INFO L93 Difference]: Finished difference Result 163 states and 231 transitions. [2023-03-31 01:30:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:30:53,702 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-03-31 01:30:53,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:53,706 INFO L225 Difference]: With dead ends: 163 [2023-03-31 01:30:53,707 INFO L226 Difference]: Without dead ends: 100 [2023-03-31 01:30:53,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:30:53,715 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 281 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:53,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 91 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:30:53,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-03-31 01:30:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2023-03-31 01:30:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 01:30:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2023-03-31 01:30:53,745 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 49 [2023-03-31 01:30:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:30:53,746 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2023-03-31 01:30:53,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 01:30:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2023-03-31 01:30:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-03-31 01:30:53,752 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:53,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:53,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:30:53,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:53,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1499231120, now seen corresponding path program 1 times [2023-03-31 01:30:53,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182112474] [2023-03-31 01:30:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:54,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:54,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:30:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:30:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:54,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:30:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:54,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:30:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:54,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:54,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182112474] [2023-03-31 01:30:54,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182112474] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:54,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:54,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:30:54,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373841263] [2023-03-31 01:30:54,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:54,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:30:54,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:54,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:30:54,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:30:54,260 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 01:30:56,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:56,638 INFO L93 Difference]: Finished difference Result 523 states and 722 transitions. [2023-03-31 01:30:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-03-31 01:30:56,639 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2023-03-31 01:30:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:56,644 INFO L225 Difference]: With dead ends: 523 [2023-03-31 01:30:56,644 INFO L226 Difference]: Without dead ends: 466 [2023-03-31 01:30:56,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=577, Invalid=1973, Unknown=0, NotChecked=0, Total=2550 [2023-03-31 01:30:56,647 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1197 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:56,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 137 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:30:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-03-31 01:30:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 433. [2023-03-31 01:30:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 350 states have (on average 1.4485714285714286) internal successors, (507), 357 states have internal predecessors, (507), 38 states have call successors, (38), 38 states have call predecessors, (38), 44 states have return successors, (61), 37 states have call predecessors, (61), 37 states have call successors, (61) [2023-03-31 01:30:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 606 transitions. [2023-03-31 01:30:56,719 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 606 transitions. Word has length 65 [2023-03-31 01:30:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:30:56,720 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 606 transitions. [2023-03-31 01:30:56,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 01:30:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 606 transitions. [2023-03-31 01:30:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-03-31 01:30:56,722 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:56,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:56,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:30:56,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:56,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:56,723 INFO L85 PathProgramCache]: Analyzing trace with hash -157284260, now seen corresponding path program 1 times [2023-03-31 01:30:56,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:56,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983883028] [2023-03-31 01:30:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:57,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:30:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:57,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:30:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:30:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:30:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:57,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983883028] [2023-03-31 01:30:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983883028] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:57,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:57,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:30:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697964112] [2023-03-31 01:30:57,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:57,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:30:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:30:57,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:30:57,241 INFO L87 Difference]: Start difference. First operand 433 states and 606 transitions. Second operand has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-03-31 01:30:58,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:30:58,452 INFO L93 Difference]: Finished difference Result 531 states and 742 transitions. [2023-03-31 01:30:58,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:30:58,461 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2023-03-31 01:30:58,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:30:58,468 INFO L225 Difference]: With dead ends: 531 [2023-03-31 01:30:58,468 INFO L226 Difference]: Without dead ends: 529 [2023-03-31 01:30:58,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-03-31 01:30:58,478 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 197 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:30:58,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 252 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:30:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-03-31 01:30:58,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 469. [2023-03-31 01:30:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 374 states have (on average 1.4197860962566844) internal successors, (531), 385 states have internal predecessors, (531), 42 states have call successors, (42), 42 states have call predecessors, (42), 52 states have return successors, (69), 41 states have call predecessors, (69), 41 states have call successors, (69) [2023-03-31 01:30:58,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 642 transitions. [2023-03-31 01:30:58,540 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 642 transitions. Word has length 66 [2023-03-31 01:30:58,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:30:58,540 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 642 transitions. [2023-03-31 01:30:58,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-03-31 01:30:58,540 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 642 transitions. [2023-03-31 01:30:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:30:58,542 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:30:58,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:30:58,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:30:58,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:30:58,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:30:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash 73380808, now seen corresponding path program 1 times [2023-03-31 01:30:58,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:30:58,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386529775] [2023-03-31 01:30:58,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:30:58,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:30:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:58,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:30:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:58,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:30:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:58,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:30:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:30:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:30:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:30:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:30:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:30:58,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:30:58,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386529775] [2023-03-31 01:30:58,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386529775] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:30:58,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:30:58,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:30:58,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295885331] [2023-03-31 01:30:58,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:30:58,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:30:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:30:58,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:30:58,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:30:58,863 INFO L87 Difference]: Start difference. First operand 469 states and 642 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-31 01:31:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:00,273 INFO L93 Difference]: Finished difference Result 1999 states and 2780 transitions. [2023-03-31 01:31:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-03-31 01:31:00,273 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 67 [2023-03-31 01:31:00,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:00,281 INFO L225 Difference]: With dead ends: 1999 [2023-03-31 01:31:00,281 INFO L226 Difference]: Without dead ends: 1561 [2023-03-31 01:31:00,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-03-31 01:31:00,284 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 541 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:00,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 108 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:31:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2023-03-31 01:31:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1477. [2023-03-31 01:31:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1168 states have (on average 1.4255136986301369) internal successors, (1665), 1205 states have internal predecessors, (1665), 136 states have call successors, (136), 136 states have call predecessors, (136), 172 states have return successors, (260), 135 states have call predecessors, (260), 135 states have call successors, (260) [2023-03-31 01:31:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2061 transitions. [2023-03-31 01:31:00,410 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2061 transitions. Word has length 67 [2023-03-31 01:31:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:00,410 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 2061 transitions. [2023-03-31 01:31:00,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-31 01:31:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2061 transitions. [2023-03-31 01:31:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-03-31 01:31:00,412 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:00,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:00,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:31:00,412 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:00,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1343175934, now seen corresponding path program 1 times [2023-03-31 01:31:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:00,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022086323] [2023-03-31 01:31:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:00,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:00,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:00,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:00,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-03-31 01:31:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-03-31 01:31:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:00,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:31:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:00,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:00,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022086323] [2023-03-31 01:31:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022086323] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:00,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:31:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725341879] [2023-03-31 01:31:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:00,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:31:00,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:00,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:31:00,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:31:00,698 INFO L87 Difference]: Start difference. First operand 1477 states and 2061 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-03-31 01:31:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:01,987 INFO L93 Difference]: Finished difference Result 3243 states and 4549 transitions. [2023-03-31 01:31:01,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-03-31 01:31:01,987 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-03-31 01:31:01,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:01,997 INFO L225 Difference]: With dead ends: 3243 [2023-03-31 01:31:01,997 INFO L226 Difference]: Without dead ends: 2090 [2023-03-31 01:31:02,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-03-31 01:31:02,001 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 790 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:02,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 68 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:31:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2023-03-31 01:31:02,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1533. [2023-03-31 01:31:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1213 states have (on average 1.4286892003297609) internal successors, (1733), 1254 states have internal predecessors, (1733), 140 states have call successors, (140), 140 states have call predecessors, (140), 179 states have return successors, (268), 138 states have call predecessors, (268), 139 states have call successors, (268) [2023-03-31 01:31:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2141 transitions. [2023-03-31 01:31:02,143 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2141 transitions. Word has length 68 [2023-03-31 01:31:02,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:02,144 INFO L495 AbstractCegarLoop]: Abstraction has 1533 states and 2141 transitions. [2023-03-31 01:31:02,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-03-31 01:31:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2141 transitions. [2023-03-31 01:31:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-03-31 01:31:02,145 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:02,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:02,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:31:02,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:02,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:02,146 INFO L85 PathProgramCache]: Analyzing trace with hash 166066816, now seen corresponding path program 1 times [2023-03-31 01:31:02,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:02,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962868717] [2023-03-31 01:31:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:02,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:02,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:02,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:31:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:31:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:31:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:02,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962868717] [2023-03-31 01:31:02,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962868717] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:02,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:02,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:31:02,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402909995] [2023-03-31 01:31:02,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:02,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:31:02,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:02,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:31:02,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:31:02,457 INFO L87 Difference]: Start difference. First operand 1533 states and 2141 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-03-31 01:31:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:03,770 INFO L93 Difference]: Finished difference Result 3278 states and 4490 transitions. [2023-03-31 01:31:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-03-31 01:31:03,770 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-03-31 01:31:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:03,778 INFO L225 Difference]: With dead ends: 3278 [2023-03-31 01:31:03,779 INFO L226 Difference]: Without dead ends: 1814 [2023-03-31 01:31:03,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-03-31 01:31:03,784 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 838 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:03,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 68 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:31:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-03-31 01:31:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1572. [2023-03-31 01:31:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1244 states have (on average 1.4268488745980707) internal successors, (1775), 1287 states have internal predecessors, (1775), 143 states have call successors, (143), 143 states have call predecessors, (143), 184 states have return successors, (274), 141 states have call predecessors, (274), 142 states have call successors, (274) [2023-03-31 01:31:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2192 transitions. [2023-03-31 01:31:03,941 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2192 transitions. Word has length 68 [2023-03-31 01:31:03,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:03,942 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 2192 transitions. [2023-03-31 01:31:03,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-03-31 01:31:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2192 transitions. [2023-03-31 01:31:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-03-31 01:31:03,943 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:03,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:03,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:31:03,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:03,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1565447046, now seen corresponding path program 1 times [2023-03-31 01:31:03,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:03,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269642039] [2023-03-31 01:31:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:03,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:04,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:04,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:31:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-03-31 01:31:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-03-31 01:31:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:04,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:04,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269642039] [2023-03-31 01:31:04,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269642039] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:04,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:04,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:31:04,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548987903] [2023-03-31 01:31:04,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:04,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:31:04,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:04,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:31:04,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:31:04,257 INFO L87 Difference]: Start difference. First operand 1572 states and 2192 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-03-31 01:31:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:05,473 INFO L93 Difference]: Finished difference Result 3697 states and 5107 transitions. [2023-03-31 01:31:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-03-31 01:31:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2023-03-31 01:31:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:05,483 INFO L225 Difference]: With dead ends: 3697 [2023-03-31 01:31:05,483 INFO L226 Difference]: Without dead ends: 2191 [2023-03-31 01:31:05,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-03-31 01:31:05,488 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 830 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:05,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 68 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:31:05,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2023-03-31 01:31:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1590. [2023-03-31 01:31:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1259 states have (on average 1.4289118347895156) internal successors, (1799), 1303 states have internal predecessors, (1799), 144 states have call successors, (144), 144 states have call predecessors, (144), 186 states have return successors, (277), 142 states have call predecessors, (277), 143 states have call successors, (277) [2023-03-31 01:31:05,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2220 transitions. [2023-03-31 01:31:05,665 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2220 transitions. Word has length 68 [2023-03-31 01:31:05,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:05,666 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 2220 transitions. [2023-03-31 01:31:05,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-03-31 01:31:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2220 transitions. [2023-03-31 01:31:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:31:05,670 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:05,670 INFO L195 NwaCegarLoop]: 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, 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] [2023-03-31 01:31:05,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:31:05,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:05,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:05,671 INFO L85 PathProgramCache]: Analyzing trace with hash -335527178, now seen corresponding path program 1 times [2023-03-31 01:31:05,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:05,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886369973] [2023-03-31 01:31:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:31:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:31:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:31:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:31:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:31:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-03-31 01:31:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-03-31 01:31:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-03-31 01:31:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-03-31 01:31:05,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:05,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886369973] [2023-03-31 01:31:05,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886369973] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:31:05,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528963365] [2023-03-31 01:31:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:05,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:31:05,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:31:05,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:31:05,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 01:31:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:06,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 01:31:06,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:31:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-03-31 01:31:06,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:31:06,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528963365] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:06,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:31:06,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-03-31 01:31:06,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486706230] [2023-03-31 01:31:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:06,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:31:06,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:06,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:31:06,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:31:06,291 INFO L87 Difference]: Start difference. First operand 1590 states and 2220 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:31:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:06,805 INFO L93 Difference]: Finished difference Result 3485 states and 4902 transitions. [2023-03-31 01:31:06,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:31:06,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 104 [2023-03-31 01:31:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:06,816 INFO L225 Difference]: With dead ends: 3485 [2023-03-31 01:31:06,816 INFO L226 Difference]: Without dead ends: 2356 [2023-03-31 01:31:06,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:31:06,820 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 166 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:06,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 105 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:31:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2023-03-31 01:31:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2252. [2023-03-31 01:31:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 1776 states have (on average 1.4093468468468469) internal successors, (2503), 1813 states have internal predecessors, (2503), 220 states have call successors, (220), 220 states have call predecessors, (220), 255 states have return successors, (385), 218 states have call predecessors, (385), 219 states have call successors, (385) [2023-03-31 01:31:07,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3108 transitions. [2023-03-31 01:31:07,049 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3108 transitions. Word has length 104 [2023-03-31 01:31:07,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:07,049 INFO L495 AbstractCegarLoop]: Abstraction has 2252 states and 3108 transitions. [2023-03-31 01:31:07,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:31:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3108 transitions. [2023-03-31 01:31:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:31:07,051 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:07,051 INFO L195 NwaCegarLoop]: 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, 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] [2023-03-31 01:31:07,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 01:31:07,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:31:07,258 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:07,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:07,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1251196750, now seen corresponding path program 1 times [2023-03-31 01:31:07,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:07,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452987020] [2023-03-31 01:31:07,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:07,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:31:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:31:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:31:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:31:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:31:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:31:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:31:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-03-31 01:31:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-03-31 01:31:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452987020] [2023-03-31 01:31:07,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452987020] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:31:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291970090] [2023-03-31 01:31:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:07,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:31:07,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:31:07,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:31:07,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 01:31:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:07,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-31 01:31:07,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:31:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 01:31:08,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:31:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291970090] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:08,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:31:08,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2023-03-31 01:31:08,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353097797] [2023-03-31 01:31:08,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:08,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:31:08,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:08,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:31:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:31:08,081 INFO L87 Difference]: Start difference. First operand 2252 states and 3108 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:31:08,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:08,888 INFO L93 Difference]: Finished difference Result 3557 states and 4905 transitions. [2023-03-31 01:31:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 01:31:08,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2023-03-31 01:31:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:08,902 INFO L225 Difference]: With dead ends: 3557 [2023-03-31 01:31:08,902 INFO L226 Difference]: Without dead ends: 3086 [2023-03-31 01:31:08,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:31:08,905 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 493 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:08,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 222 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:31:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2023-03-31 01:31:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 3080. [2023-03-31 01:31:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 2426 states have (on average 1.407666941467436) internal successors, (3415), 2475 states have internal predecessors, (3415), 303 states have call successors, (303), 303 states have call predecessors, (303), 350 states have return successors, (531), 301 states have call predecessors, (531), 302 states have call successors, (531) [2023-03-31 01:31:09,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 4249 transitions. [2023-03-31 01:31:09,230 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 4249 transitions. Word has length 105 [2023-03-31 01:31:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:09,230 INFO L495 AbstractCegarLoop]: Abstraction has 3080 states and 4249 transitions. [2023-03-31 01:31:09,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:31:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 4249 transitions. [2023-03-31 01:31:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:31:09,232 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:09,232 INFO L195 NwaCegarLoop]: 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:09,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 01:31:09,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-03-31 01:31:09,439 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:09,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1534527796, now seen corresponding path program 1 times [2023-03-31 01:31:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:09,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002833783] [2023-03-31 01:31:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:09,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:31:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:31:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:31:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:31:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:31:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-03-31 01:31:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-03-31 01:31:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-03-31 01:31:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-03-31 01:31:09,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:09,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002833783] [2023-03-31 01:31:09,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002833783] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:09,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:09,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:31:09,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338434741] [2023-03-31 01:31:09,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:09,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:31:09,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:09,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:31:09,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:31:09,872 INFO L87 Difference]: Start difference. First operand 3080 states and 4249 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 01:31:13,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:13,376 INFO L93 Difference]: Finished difference Result 6944 states and 9554 transitions. [2023-03-31 01:31:13,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-03-31 01:31:13,377 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 105 [2023-03-31 01:31:13,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:13,399 INFO L225 Difference]: With dead ends: 6944 [2023-03-31 01:31:13,399 INFO L226 Difference]: Without dead ends: 4529 [2023-03-31 01:31:13,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=794, Invalid=3628, Unknown=0, NotChecked=0, Total=4422 [2023-03-31 01:31:13,408 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1654 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:13,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 210 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:31:13,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2023-03-31 01:31:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 4165. [2023-03-31 01:31:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 3285 states have (on average 1.4103500761035008) internal successors, (4633), 3336 states have internal predecessors, (4633), 415 states have call successors, (415), 415 states have call predecessors, (415), 464 states have return successors, (707), 413 states have call predecessors, (707), 414 states have call successors, (707) [2023-03-31 01:31:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 5755 transitions. [2023-03-31 01:31:13,852 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 5755 transitions. Word has length 105 [2023-03-31 01:31:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:13,852 INFO L495 AbstractCegarLoop]: Abstraction has 4165 states and 5755 transitions. [2023-03-31 01:31:13,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 01:31:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 5755 transitions. [2023-03-31 01:31:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:31:13,856 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:13,857 INFO L195 NwaCegarLoop]: 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:13,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:31:13,857 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:13,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash -135147566, now seen corresponding path program 1 times [2023-03-31 01:31:13,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:13,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152050745] [2023-03-31 01:31:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:31:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:31:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:31:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:31:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:31:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-03-31 01:31:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:31:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-03-31 01:31:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-03-31 01:31:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152050745] [2023-03-31 01:31:14,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152050745] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:31:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107848510] [2023-03-31 01:31:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:14,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:31:14,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:31:14,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:31:14,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 01:31:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:14,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-31 01:31:14,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:31:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:14,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:31:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-03-31 01:31:14,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107848510] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:31:14,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:31:14,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 11] total 26 [2023-03-31 01:31:14,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695923303] [2023-03-31 01:31:14,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:31:14,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-03-31 01:31:14,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:14,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-03-31 01:31:14,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-03-31 01:31:14,933 INFO L87 Difference]: Start difference. First operand 4165 states and 5755 transitions. Second operand has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 22 states have internal predecessors, (174), 7 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2023-03-31 01:31:18,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:18,454 INFO L93 Difference]: Finished difference Result 14990 states and 20816 transitions. [2023-03-31 01:31:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-03-31 01:31:18,455 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 22 states have internal predecessors, (174), 7 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) Word has length 105 [2023-03-31 01:31:18,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:18,513 INFO L225 Difference]: With dead ends: 14990 [2023-03-31 01:31:18,513 INFO L226 Difference]: Without dead ends: 10890 [2023-03-31 01:31:18,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 234 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=764, Invalid=2316, Unknown=0, NotChecked=0, Total=3080 [2023-03-31 01:31:18,528 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1881 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:18,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 92 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:31:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10890 states. [2023-03-31 01:31:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10890 to 8922. [2023-03-31 01:31:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8922 states, 6930 states have (on average 1.4090909090909092) internal successors, (9765), 7293 states have internal predecessors, (9765), 815 states have call successors, (815), 815 states have call predecessors, (815), 1176 states have return successors, (1745), 813 states have call predecessors, (1745), 814 states have call successors, (1745) [2023-03-31 01:31:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8922 states to 8922 states and 12325 transitions. [2023-03-31 01:31:19,522 INFO L78 Accepts]: Start accepts. Automaton has 8922 states and 12325 transitions. Word has length 105 [2023-03-31 01:31:19,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:19,522 INFO L495 AbstractCegarLoop]: Abstraction has 8922 states and 12325 transitions. [2023-03-31 01:31:19,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 22 states have internal predecessors, (174), 7 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2023-03-31 01:31:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand 8922 states and 12325 transitions. [2023-03-31 01:31:19,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:31:19,525 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:19,525 INFO L195 NwaCegarLoop]: 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:19,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 01:31:19,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:31:19,732 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:19,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:19,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2043605356, now seen corresponding path program 1 times [2023-03-31 01:31:19,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:19,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4444996] [2023-03-31 01:31:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:19,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:19,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:19,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:20,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:31:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:31:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:31:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:31:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:20,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:31:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-03-31 01:31:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:20,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:31:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:20,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-03-31 01:31:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-03-31 01:31:20,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:20,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4444996] [2023-03-31 01:31:20,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4444996] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:20,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:31:20,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:31:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892297931] [2023-03-31 01:31:20,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:20,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:31:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:20,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:31:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:31:20,141 INFO L87 Difference]: Start difference. First operand 8922 states and 12325 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:31:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:23,565 INFO L93 Difference]: Finished difference Result 15614 states and 21514 transitions. [2023-03-31 01:31:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-03-31 01:31:23,565 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2023-03-31 01:31:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:23,615 INFO L225 Difference]: With dead ends: 15614 [2023-03-31 01:31:23,615 INFO L226 Difference]: Without dead ends: 9829 [2023-03-31 01:31:23,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=716, Invalid=3066, Unknown=0, NotChecked=0, Total=3782 [2023-03-31 01:31:23,634 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 973 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:23,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 275 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:31:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9829 states. [2023-03-31 01:31:24,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9829 to 8788. [2023-03-31 01:31:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8788 states, 6847 states have (on average 1.413319702059296) internal successors, (9677), 7205 states have internal predecessors, (9677), 792 states have call successors, (792), 792 states have call predecessors, (792), 1148 states have return successors, (1661), 790 states have call predecessors, (1661), 791 states have call successors, (1661) [2023-03-31 01:31:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8788 states to 8788 states and 12130 transitions. [2023-03-31 01:31:24,525 INFO L78 Accepts]: Start accepts. Automaton has 8788 states and 12130 transitions. Word has length 105 [2023-03-31 01:31:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:24,526 INFO L495 AbstractCegarLoop]: Abstraction has 8788 states and 12130 transitions. [2023-03-31 01:31:24,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 01:31:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8788 states and 12130 transitions. [2023-03-31 01:31:24,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-03-31 01:31:24,533 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:24,533 INFO L195 NwaCegarLoop]: 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:24,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:31:24,533 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:24,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1223331102, now seen corresponding path program 1 times [2023-03-31 01:31:24,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:24,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711982453] [2023-03-31 01:31:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:24,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:31:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:31:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:31:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:31:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:31:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:31:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:31:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-03-31 01:31:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-03-31 01:31:24,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:24,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711982453] [2023-03-31 01:31:24,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711982453] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:31:24,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254438950] [2023-03-31 01:31:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:24,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:31:24,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:31:24,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:31:24,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 01:31:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:24,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2023-03-31 01:31:24,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:31:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:24,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 01:31:24,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254438950] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:31:24,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 01:31:24,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-03-31 01:31:24,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555652858] [2023-03-31 01:31:24,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:31:24,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 01:31:24,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:24,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 01:31:24,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:31:24,972 INFO L87 Difference]: Start difference. First operand 8788 states and 12130 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:31:25,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:25,911 INFO L93 Difference]: Finished difference Result 18574 states and 25689 transitions. [2023-03-31 01:31:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 01:31:25,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 108 [2023-03-31 01:31:25,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:25,945 INFO L225 Difference]: With dead ends: 18574 [2023-03-31 01:31:25,945 INFO L226 Difference]: Without dead ends: 9880 [2023-03-31 01:31:25,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:31:25,969 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 39 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:25,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 216 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 01:31:25,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9880 states. [2023-03-31 01:31:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9880 to 9776. [2023-03-31 01:31:27,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9776 states, 7631 states have (on average 1.4028305595596908) internal successors, (10705), 7977 states have internal predecessors, (10705), 900 states have call successors, (900), 900 states have call predecessors, (900), 1244 states have return successors, (1760), 898 states have call predecessors, (1760), 899 states have call successors, (1760) [2023-03-31 01:31:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9776 states to 9776 states and 13365 transitions. [2023-03-31 01:31:27,127 INFO L78 Accepts]: Start accepts. Automaton has 9776 states and 13365 transitions. Word has length 108 [2023-03-31 01:31:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:27,128 INFO L495 AbstractCegarLoop]: Abstraction has 9776 states and 13365 transitions. [2023-03-31 01:31:27,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 01:31:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 9776 states and 13365 transitions. [2023-03-31 01:31:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-03-31 01:31:27,130 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:27,130 INFO L195 NwaCegarLoop]: 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:27,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 01:31:27,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:31:27,337 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:27,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash 687711456, now seen corresponding path program 1 times [2023-03-31 01:31:27,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:27,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947836683] [2023-03-31 01:31:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:27,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:31:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:31:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:31:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:31:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:31:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:31:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-03-31 01:31:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-03-31 01:31:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-03-31 01:31:27,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:27,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947836683] [2023-03-31 01:31:27,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947836683] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:31:27,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583742667] [2023-03-31 01:31:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:27,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:31:27,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:31:27,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:31:27,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 01:31:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:27,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 14 conjunts are in the unsatisfiable core [2023-03-31 01:31:27,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:31:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:27,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:31:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 01:31:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583742667] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:31:28,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:31:28,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-03-31 01:31:28,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109647073] [2023-03-31 01:31:28,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:31:28,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-03-31 01:31:28,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:28,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-03-31 01:31:28,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:31:28,070 INFO L87 Difference]: Start difference. First operand 9776 states and 13365 transitions. Second operand has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-03-31 01:31:30,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:30,990 INFO L93 Difference]: Finished difference Result 21794 states and 29425 transitions. [2023-03-31 01:31:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-03-31 01:31:30,990 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 108 [2023-03-31 01:31:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:31,020 INFO L225 Difference]: With dead ends: 21794 [2023-03-31 01:31:31,020 INFO L226 Difference]: Without dead ends: 11702 [2023-03-31 01:31:31,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2023-03-31 01:31:31,043 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 973 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:31,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 130 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:31:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11702 states. [2023-03-31 01:31:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11702 to 9889. [2023-03-31 01:31:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9889 states, 7617 states have (on average 1.3265064986215045) internal successors, (10104), 7843 states have internal predecessors, (10104), 1030 states have call successors, (1030), 1017 states have call predecessors, (1030), 1241 states have return successors, (1716), 1028 states have call predecessors, (1716), 1029 states have call successors, (1716) [2023-03-31 01:31:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 12850 transitions. [2023-03-31 01:31:32,335 INFO L78 Accepts]: Start accepts. Automaton has 9889 states and 12850 transitions. Word has length 108 [2023-03-31 01:31:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:31:32,335 INFO L495 AbstractCegarLoop]: Abstraction has 9889 states and 12850 transitions. [2023-03-31 01:31:32,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-03-31 01:31:32,336 INFO L276 IsEmpty]: Start isEmpty. Operand 9889 states and 12850 transitions. [2023-03-31 01:31:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-03-31 01:31:32,338 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:31:32,338 INFO L195 NwaCegarLoop]: 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:31:32,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-31 01:31:32,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-03-31 01:31:32,545 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:31:32,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:31:32,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2087091686, now seen corresponding path program 1 times [2023-03-31 01:31:32,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:31:32,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093653440] [2023-03-31 01:31:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:31:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:31:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:31:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-03-31 01:31:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-03-31 01:31:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-03-31 01:31:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-03-31 01:31:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-03-31 01:31:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-03-31 01:31:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-03-31 01:31:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:31:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-03-31 01:31:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-03-31 01:31:32,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:31:32,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093653440] [2023-03-31 01:31:32,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093653440] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 01:31:32,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933331922] [2023-03-31 01:31:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:31:32,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 01:31:32,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:31:32,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 01:31:32,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-31 01:31:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:31:32,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 14 conjunts are in the unsatisfiable core [2023-03-31 01:31:32,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 01:31:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:31:33,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 01:31:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 01:31:33,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933331922] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 01:31:33,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 01:31:33,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-03-31 01:31:33,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058148027] [2023-03-31 01:31:33,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 01:31:33,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-03-31 01:31:33,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:31:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-03-31 01:31:33,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:31:33,253 INFO L87 Difference]: Start difference. First operand 9889 states and 12850 transitions. Second operand has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-03-31 01:31:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:31:36,516 INFO L93 Difference]: Finished difference Result 26829 states and 34843 transitions. [2023-03-31 01:31:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-03-31 01:31:36,517 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 108 [2023-03-31 01:31:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:31:36,579 INFO L225 Difference]: With dead ends: 26829 [2023-03-31 01:31:36,579 INFO L226 Difference]: Without dead ends: 18353 [2023-03-31 01:31:36,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=484, Invalid=1678, Unknown=0, NotChecked=0, Total=2162 [2023-03-31 01:31:36,600 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1044 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:31:36,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 125 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:31:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18353 states.