/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:13:46,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:13:46,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:13:46,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:13:46,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:13:46,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:13:46,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:13:46,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:13:46,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:13:46,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:13:46,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:13:46,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:13:46,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:13:46,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:13:46,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:13:46,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:13:46,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:13:46,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:13:46,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:13:46,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:13:46,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:13:46,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:13:46,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:13:46,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:13:46,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:13:46,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:13:46,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:13:46,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:13:46,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:13:46,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:13:46,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:13:46,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:13:46,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:13:46,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:13:46,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:13:46,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:13:46,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:13:46,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:13:46,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:13:46,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:13:46,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:13:46,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:13:46,612 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:13:46,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:13:46,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:13:46,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:13:46,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:13:46,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:13:46,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:13:46,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:13:46,615 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:13:46,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:13:46,616 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:13:46,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:13:46,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:13:46,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:13:46,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:13:46,617 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:13:46,618 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:13:46,618 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:13:46,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:13:46,618 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:13:46,619 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:13:46,619 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:13:46,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:13:46,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:13:46,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:13:46,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:13:46,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:13:46,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:13:46,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:13:46,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:13:46,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:13:46,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:13:47,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:13:47,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:13:47,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:13:47,010 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:13:47,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-10-15 17:13:47,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/841837e4f/79824651707a40cf9d3b3041003833ac/FLAG062de9b9f [2022-10-15 17:13:47,828 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:13:47,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-10-15 17:13:47,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/841837e4f/79824651707a40cf9d3b3041003833ac/FLAG062de9b9f [2022-10-15 17:13:48,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/841837e4f/79824651707a40cf9d3b3041003833ac [2022-10-15 17:13:48,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:13:48,103 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:13:48,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:13:48,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:13:48,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:13:48,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:48,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a23f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48, skipping insertion in model container [2022-10-15 17:13:48,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:48,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:13:48,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:13:48,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-10-15 17:13:48,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:13:48,850 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:13:48,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-10-15 17:13:48,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:13:48,989 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:13:48,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48 WrapperNode [2022-10-15 17:13:48,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:13:48,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:13:48,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:13:48,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:13:49,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,075 INFO L138 Inliner]: procedures = 184, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2022-10-15 17:13:49,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:13:49,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:13:49,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:13:49,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:13:49,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,172 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:13:49,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:13:49,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:13:49,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:13:49,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (1/1) ... [2022-10-15 17:13:49,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:13:49,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:13:49,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:13:49,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:13:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:13:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-15 17:13:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-15 17:13:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2022-10-15 17:13:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2022-10-15 17:13:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:13:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 17:13:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2022-10-15 17:13:49,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2022-10-15 17:13:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:13:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 17:13:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:13:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2022-10-15 17:13:49,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2022-10-15 17:13:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2022-10-15 17:13:49,319 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2022-10-15 17:13:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2022-10-15 17:13:49,320 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2022-10-15 17:13:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 17:13:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2022-10-15 17:13:49,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2022-10-15 17:13:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:13:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2022-10-15 17:13:49,321 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2022-10-15 17:13:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:13:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2022-10-15 17:13:49,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2022-10-15 17:13:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-10-15 17:13:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:13:49,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:13:49,596 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:13:49,599 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:13:50,502 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:13:50,514 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:13:50,515 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 17:13:50,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:13:50 BoogieIcfgContainer [2022-10-15 17:13:50,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:13:50,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:13:50,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:13:50,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:13:50,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:13:48" (1/3) ... [2022-10-15 17:13:50,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cdfbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:13:50, skipping insertion in model container [2022-10-15 17:13:50,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:13:48" (2/3) ... [2022-10-15 17:13:50,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cdfbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:13:50, skipping insertion in model container [2022-10-15 17:13:50,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:13:50" (3/3) ... [2022-10-15 17:13:50,528 INFO L112 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2022-10-15 17:13:50,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:13:50,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 162 error locations. [2022-10-15 17:13:50,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:13:50,623 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5f9d2df2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:13:50,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2022-10-15 17:13:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 401 states, 200 states have (on average 1.95) internal successors, (390), 362 states have internal predecessors, (390), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-10-15 17:13:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 17:13:50,640 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:50,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:50,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:13:50,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1250997951, now seen corresponding path program 1 times [2022-10-15 17:13:50,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:50,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105857312] [2022-10-15 17:13:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:13:51,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:51,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105857312] [2022-10-15 17:13:51,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105857312] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:13:51,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:13:51,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:13:51,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104078779] [2022-10-15 17:13:51,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:13:51,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:13:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:51,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:13:51,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:13:51,160 INFO L87 Difference]: Start difference. First operand has 401 states, 200 states have (on average 1.95) internal successors, (390), 362 states have internal predecessors, (390), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:52,052 INFO L93 Difference]: Finished difference Result 466 states and 557 transitions. [2022-10-15 17:13:52,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:13:52,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2022-10-15 17:13:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:52,073 INFO L225 Difference]: With dead ends: 466 [2022-10-15 17:13:52,074 INFO L226 Difference]: Without dead ends: 464 [2022-10-15 17:13:52,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:13:52,081 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 564 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:52,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 426 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:13:52,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-10-15 17:13:52,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 395. [2022-10-15 17:13:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 213 states have (on average 1.8169014084507042) internal successors, (387), 351 states have internal predecessors, (387), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2022-10-15 17:13:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 456 transitions. [2022-10-15 17:13:52,206 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 456 transitions. Word has length 7 [2022-10-15 17:13:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:52,206 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 456 transitions. [2022-10-15 17:13:52,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 456 transitions. [2022-10-15 17:13:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 17:13:52,209 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:52,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:52,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:13:52,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:13:52,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:52,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1250997952, now seen corresponding path program 1 times [2022-10-15 17:13:52,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:52,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718710793] [2022-10-15 17:13:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:52,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:52,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:13:52,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:52,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718710793] [2022-10-15 17:13:52,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718710793] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:13:52,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:13:52,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:13:52,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174041515] [2022-10-15 17:13:52,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:13:52,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:13:52,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:52,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:13:52,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:13:52,480 INFO L87 Difference]: Start difference. First operand 395 states and 456 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:53,077 INFO L93 Difference]: Finished difference Result 432 states and 516 transitions. [2022-10-15 17:13:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:13:53,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2022-10-15 17:13:53,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:53,082 INFO L225 Difference]: With dead ends: 432 [2022-10-15 17:13:53,082 INFO L226 Difference]: Without dead ends: 432 [2022-10-15 17:13:53,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:13:53,085 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 159 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:53,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1017 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:13:53,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-10-15 17:13:53,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 392. [2022-10-15 17:13:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 215 states have (on average 1.7813953488372094) internal successors, (383), 347 states have internal predecessors, (383), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2022-10-15 17:13:53,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 452 transitions. [2022-10-15 17:13:53,112 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 452 transitions. Word has length 7 [2022-10-15 17:13:53,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:53,112 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 452 transitions. [2022-10-15 17:13:53,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:53,113 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 452 transitions. [2022-10-15 17:13:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:13:53,113 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:53,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:53,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:13:53,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:13:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:53,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1049181770, now seen corresponding path program 1 times [2022-10-15 17:13:53,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:53,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614280376] [2022-10-15 17:13:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:53,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:53,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:13:53,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:53,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614280376] [2022-10-15 17:13:53,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614280376] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:13:53,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:13:53,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:13:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823024864] [2022-10-15 17:13:53,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:13:53,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:13:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:13:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:13:53,355 INFO L87 Difference]: Start difference. First operand 392 states and 452 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:53,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:53,928 INFO L93 Difference]: Finished difference Result 431 states and 515 transitions. [2022-10-15 17:13:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:13:53,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-10-15 17:13:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:53,932 INFO L225 Difference]: With dead ends: 431 [2022-10-15 17:13:53,933 INFO L226 Difference]: Without dead ends: 431 [2022-10-15 17:13:53,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:13:53,935 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 161 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:53,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1269 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:13:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-10-15 17:13:53,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 391. [2022-10-15 17:13:53,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 215 states have (on average 1.7767441860465116) internal successors, (382), 346 states have internal predecessors, (382), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2022-10-15 17:13:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 451 transitions. [2022-10-15 17:13:53,956 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 451 transitions. Word has length 10 [2022-10-15 17:13:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:53,956 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 451 transitions. [2022-10-15 17:13:53,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 451 transitions. [2022-10-15 17:13:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:13:53,957 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:53,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:53,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:13:53,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:13:53,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:53,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1049181771, now seen corresponding path program 1 times [2022-10-15 17:13:53,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:53,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128372527] [2022-10-15 17:13:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:53,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:54,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:13:54,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:54,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128372527] [2022-10-15 17:13:54,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128372527] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:13:54,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:13:54,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 17:13:54,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158260152] [2022-10-15 17:13:54,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:13:54,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:13:54,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:54,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:13:54,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:13:54,341 INFO L87 Difference]: Start difference. First operand 391 states and 451 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:55,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:55,047 INFO L93 Difference]: Finished difference Result 430 states and 514 transitions. [2022-10-15 17:13:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:13:55,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-10-15 17:13:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:55,051 INFO L225 Difference]: With dead ends: 430 [2022-10-15 17:13:55,052 INFO L226 Difference]: Without dead ends: 430 [2022-10-15 17:13:55,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:13:55,054 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 155 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:55,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1258 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 17:13:55,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-10-15 17:13:55,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 390. [2022-10-15 17:13:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 215 states have (on average 1.7720930232558139) internal successors, (381), 345 states have internal predecessors, (381), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2022-10-15 17:13:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 450 transitions. [2022-10-15 17:13:55,073 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 450 transitions. Word has length 10 [2022-10-15 17:13:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:55,074 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 450 transitions. [2022-10-15 17:13:55,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 450 transitions. [2022-10-15 17:13:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 17:13:55,075 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:55,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:55,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:13:55,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:13:55,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1322669809, now seen corresponding path program 1 times [2022-10-15 17:13:55,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:55,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183420015] [2022-10-15 17:13:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:55,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:13:55,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:55,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183420015] [2022-10-15 17:13:55,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183420015] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:13:55,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:13:55,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:13:55,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085914919] [2022-10-15 17:13:55,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:13:55,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:13:55,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:55,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:13:55,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:13:55,266 INFO L87 Difference]: Start difference. First operand 390 states and 450 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:55,612 INFO L93 Difference]: Finished difference Result 429 states and 513 transitions. [2022-10-15 17:13:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:13:55,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-10-15 17:13:55,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:55,620 INFO L225 Difference]: With dead ends: 429 [2022-10-15 17:13:55,620 INFO L226 Difference]: Without dead ends: 429 [2022-10-15 17:13:55,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:13:55,626 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 150 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:55,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 805 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:13:55,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-10-15 17:13:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 389. [2022-10-15 17:13:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 215 states have (on average 1.7674418604651163) internal successors, (380), 344 states have internal predecessors, (380), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2022-10-15 17:13:55,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 449 transitions. [2022-10-15 17:13:55,663 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 449 transitions. Word has length 16 [2022-10-15 17:13:55,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:55,663 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 449 transitions. [2022-10-15 17:13:55,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:55,664 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 449 transitions. [2022-10-15 17:13:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 17:13:55,665 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:55,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:55,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:13:55,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:13:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1322669808, now seen corresponding path program 1 times [2022-10-15 17:13:55,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:55,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915784650] [2022-10-15 17:13:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:55,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:55,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:13:55,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:55,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915784650] [2022-10-15 17:13:55,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915784650] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:13:55,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:13:55,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:13:55,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376995328] [2022-10-15 17:13:55,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:13:55,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:13:55,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:55,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:13:55,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:13:55,781 INFO L87 Difference]: Start difference. First operand 389 states and 449 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:56,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:56,164 INFO L93 Difference]: Finished difference Result 428 states and 512 transitions. [2022-10-15 17:13:56,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:13:56,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-10-15 17:13:56,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:56,168 INFO L225 Difference]: With dead ends: 428 [2022-10-15 17:13:56,168 INFO L226 Difference]: Without dead ends: 428 [2022-10-15 17:13:56,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:13:56,170 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 149 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:56,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 792 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:13:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-10-15 17:13:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 388. [2022-10-15 17:13:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 215 states have (on average 1.7627906976744185) internal successors, (379), 343 states have internal predecessors, (379), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2022-10-15 17:13:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 448 transitions. [2022-10-15 17:13:56,186 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 448 transitions. Word has length 16 [2022-10-15 17:13:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:56,187 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 448 transitions. [2022-10-15 17:13:56,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 448 transitions. [2022-10-15 17:13:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-15 17:13:56,188 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:56,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:13:56,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 17:13:56,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:13:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:56,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1625786511, now seen corresponding path program 1 times [2022-10-15 17:13:56,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:56,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214991970] [2022-10-15 17:13:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:56,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:13:56,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:56,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214991970] [2022-10-15 17:13:56,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214991970] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:13:56,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:13:56,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:13:56,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982144866] [2022-10-15 17:13:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:13:56,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:13:56,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:56,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:13:56,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:13:56,438 INFO L87 Difference]: Start difference. First operand 388 states and 448 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:57,273 INFO L93 Difference]: Finished difference Result 436 states and 525 transitions. [2022-10-15 17:13:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 17:13:57,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-10-15 17:13:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:57,277 INFO L225 Difference]: With dead ends: 436 [2022-10-15 17:13:57,278 INFO L226 Difference]: Without dead ends: 436 [2022-10-15 17:13:57,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:13:57,279 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 605 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:57,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 458 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 17:13:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-10-15 17:13:57,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 369. [2022-10-15 17:13:57,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 215 states have (on average 1.6651162790697673) internal successors, (358), 324 states have internal predecessors, (358), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2022-10-15 17:13:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 427 transitions. [2022-10-15 17:13:57,298 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 427 transitions. Word has length 19 [2022-10-15 17:13:57,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:57,298 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 427 transitions. [2022-10-15 17:13:57,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:57,299 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 427 transitions. [2022-10-15 17:13:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-15 17:13:57,300 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:57,300 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] [2022-10-15 17:13:57,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 17:13:57,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:13:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:57,301 INFO L85 PathProgramCache]: Analyzing trace with hash -373735986, now seen corresponding path program 1 times [2022-10-15 17:13:57,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:57,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057491695] [2022-10-15 17:13:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:57,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:57,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:13:57,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:57,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057491695] [2022-10-15 17:13:57,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057491695] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:13:57,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:13:57,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:13:57,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102156652] [2022-10-15 17:13:57,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:13:57,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:13:57,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:57,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:13:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:13:57,505 INFO L87 Difference]: Start difference. First operand 369 states and 427 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:58,234 INFO L93 Difference]: Finished difference Result 442 states and 542 transitions. [2022-10-15 17:13:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:13:58,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-10-15 17:13:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:58,239 INFO L225 Difference]: With dead ends: 442 [2022-10-15 17:13:58,239 INFO L226 Difference]: Without dead ends: 442 [2022-10-15 17:13:58,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:13:58,240 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 227 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:58,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1617 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 17:13:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-10-15 17:13:58,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 392. [2022-10-15 17:13:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 234 states have (on average 1.6452991452991452) internal successors, (385), 344 states have internal predecessors, (385), 33 states have call successors, (33), 14 states have call predecessors, (33), 15 states have return successors, (41), 33 states have call predecessors, (41), 33 states have call successors, (41) [2022-10-15 17:13:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 459 transitions. [2022-10-15 17:13:58,259 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 459 transitions. Word has length 25 [2022-10-15 17:13:58,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:58,259 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 459 transitions. [2022-10-15 17:13:58,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 459 transitions. [2022-10-15 17:13:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-15 17:13:58,261 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:58,261 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] [2022-10-15 17:13:58,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 17:13:58,261 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:13:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash -373735985, now seen corresponding path program 1 times [2022-10-15 17:13:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:58,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830058453] [2022-10-15 17:13:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:58,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:13:58,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:58,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830058453] [2022-10-15 17:13:58,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830058453] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:13:58,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:13:58,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:13:58,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641504197] [2022-10-15 17:13:58,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:13:58,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:13:58,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:58,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:13:58,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:13:58,698 INFO L87 Difference]: Start difference. First operand 392 states and 459 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:13:59,499 INFO L93 Difference]: Finished difference Result 441 states and 541 transitions. [2022-10-15 17:13:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:13:59,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-10-15 17:13:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:13:59,503 INFO L225 Difference]: With dead ends: 441 [2022-10-15 17:13:59,503 INFO L226 Difference]: Without dead ends: 441 [2022-10-15 17:13:59,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:13:59,504 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 218 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:13:59,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1657 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:13:59,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-10-15 17:13:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 392. [2022-10-15 17:13:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 234 states have (on average 1.641025641025641) internal successors, (384), 344 states have internal predecessors, (384), 33 states have call successors, (33), 14 states have call predecessors, (33), 15 states have return successors, (41), 33 states have call predecessors, (41), 33 states have call successors, (41) [2022-10-15 17:13:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 458 transitions. [2022-10-15 17:13:59,521 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 458 transitions. Word has length 25 [2022-10-15 17:13:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:13:59,522 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 458 transitions. [2022-10-15 17:13:59,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:13:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 458 transitions. [2022-10-15 17:13:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-15 17:13:59,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:13:59,523 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] [2022-10-15 17:13:59,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 17:13:59,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:13:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:13:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1288018163, now seen corresponding path program 1 times [2022-10-15 17:13:59,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:13:59,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541413676] [2022-10-15 17:13:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:13:59,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:13:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:13:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:13:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:13:59,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:13:59,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541413676] [2022-10-15 17:13:59,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541413676] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:13:59,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:13:59,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:13:59,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830364628] [2022-10-15 17:13:59,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:13:59,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:13:59,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:13:59,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:13:59,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:13:59,725 INFO L87 Difference]: Start difference. First operand 392 states and 458 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:00,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:00,499 INFO L93 Difference]: Finished difference Result 525 states and 653 transitions. [2022-10-15 17:14:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:14:00,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-10-15 17:14:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:00,504 INFO L225 Difference]: With dead ends: 525 [2022-10-15 17:14:00,504 INFO L226 Difference]: Without dead ends: 525 [2022-10-15 17:14:00,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:14:00,505 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 364 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:00,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1542 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:14:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-10-15 17:14:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 429. [2022-10-15 17:14:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 262 states have (on average 1.6145038167938932) internal successors, (423), 377 states have internal predecessors, (423), 38 states have call successors, (38), 17 states have call predecessors, (38), 19 states have return successors, (57), 34 states have call predecessors, (57), 38 states have call successors, (57) [2022-10-15 17:14:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 518 transitions. [2022-10-15 17:14:00,526 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 518 transitions. Word has length 26 [2022-10-15 17:14:00,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:00,527 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 518 transitions. [2022-10-15 17:14:00,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 518 transitions. [2022-10-15 17:14:00,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-15 17:14:00,528 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:00,529 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] [2022-10-15 17:14:00,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 17:14:00,529 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:00,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1288018164, now seen corresponding path program 1 times [2022-10-15 17:14:00,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:00,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39831034] [2022-10-15 17:14:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:00,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:00,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:00,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39831034] [2022-10-15 17:14:00,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39831034] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:00,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:00,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:14:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600509759] [2022-10-15 17:14:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:00,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:14:00,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:14:00,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:00,851 INFO L87 Difference]: Start difference. First operand 429 states and 518 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:01,643 INFO L93 Difference]: Finished difference Result 484 states and 608 transitions. [2022-10-15 17:14:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 17:14:01,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-10-15 17:14:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:01,648 INFO L225 Difference]: With dead ends: 484 [2022-10-15 17:14:01,648 INFO L226 Difference]: Without dead ends: 484 [2022-10-15 17:14:01,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:14:01,649 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 218 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:01,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1655 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:14:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-10-15 17:14:01,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 436. [2022-10-15 17:14:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 268 states have (on average 1.6119402985074627) internal successors, (432), 382 states have internal predecessors, (432), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (54), 35 states have call predecessors, (54), 39 states have call successors, (54) [2022-10-15 17:14:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 525 transitions. [2022-10-15 17:14:01,668 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 525 transitions. Word has length 26 [2022-10-15 17:14:01,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:01,669 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 525 transitions. [2022-10-15 17:14:01,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:01,669 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 525 transitions. [2022-10-15 17:14:01,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-15 17:14:01,670 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:01,670 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] [2022-10-15 17:14:01,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 17:14:01,671 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ASIdleErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:01,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:01,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1263299980, now seen corresponding path program 1 times [2022-10-15 17:14:01,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:01,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782820283] [2022-10-15 17:14:01,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:01,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:01,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:01,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:01,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782820283] [2022-10-15 17:14:01,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782820283] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:01,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:01,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:14:01,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831123753] [2022-10-15 17:14:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:01,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:14:01,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:01,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:14:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:01,982 INFO L87 Difference]: Start difference. First operand 436 states and 525 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:02,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:02,961 INFO L93 Difference]: Finished difference Result 522 states and 665 transitions. [2022-10-15 17:14:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:14:02,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-10-15 17:14:02,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:02,965 INFO L225 Difference]: With dead ends: 522 [2022-10-15 17:14:02,966 INFO L226 Difference]: Without dead ends: 522 [2022-10-15 17:14:02,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:14:02,967 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 244 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:02,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1651 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 17:14:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-10-15 17:14:02,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 472. [2022-10-15 17:14:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 297 states have (on average 1.5892255892255893) internal successors, (472), 413 states have internal predecessors, (472), 42 states have call successors, (42), 20 states have call predecessors, (42), 23 states have return successors, (62), 38 states have call predecessors, (62), 42 states have call successors, (62) [2022-10-15 17:14:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 576 transitions. [2022-10-15 17:14:02,987 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 576 transitions. Word has length 27 [2022-10-15 17:14:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:02,987 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 576 transitions. [2022-10-15 17:14:02,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 576 transitions. [2022-10-15 17:14:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-15 17:14:02,989 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:02,989 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] [2022-10-15 17:14:02,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 17:14:02,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ASIdleErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:02,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1263299979, now seen corresponding path program 1 times [2022-10-15 17:14:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:02,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864590941] [2022-10-15 17:14:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:02,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:03,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:03,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:03,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864590941] [2022-10-15 17:14:03,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864590941] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:03,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:03,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:14:03,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701625467] [2022-10-15 17:14:03,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:03,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:14:03,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:03,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:14:03,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:03,215 INFO L87 Difference]: Start difference. First operand 472 states and 576 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:04,061 INFO L93 Difference]: Finished difference Result 585 states and 757 transitions. [2022-10-15 17:14:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:14:04,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-10-15 17:14:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:04,068 INFO L225 Difference]: With dead ends: 585 [2022-10-15 17:14:04,068 INFO L226 Difference]: Without dead ends: 585 [2022-10-15 17:14:04,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:14:04,070 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 290 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:04,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1625 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:14:04,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-10-15 17:14:04,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 505. [2022-10-15 17:14:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 325 states have (on average 1.5692307692307692) internal successors, (510), 442 states have internal predecessors, (510), 43 states have call successors, (43), 22 states have call predecessors, (43), 27 states have return successors, (68), 40 states have call predecessors, (68), 43 states have call successors, (68) [2022-10-15 17:14:04,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 621 transitions. [2022-10-15 17:14:04,097 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 621 transitions. Word has length 27 [2022-10-15 17:14:04,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:04,097 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 621 transitions. [2022-10-15 17:14:04,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 621 transitions. [2022-10-15 17:14:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-15 17:14:04,103 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:04,103 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] [2022-10-15 17:14:04,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 17:14:04,103 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:04,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1917156537, now seen corresponding path program 1 times [2022-10-15 17:14:04,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:04,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66703719] [2022-10-15 17:14:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:04,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 17:14:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:04,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:04,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66703719] [2022-10-15 17:14:04,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66703719] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:04,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:04,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-15 17:14:04,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642685382] [2022-10-15 17:14:04,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:04,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 17:14:04,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:04,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 17:14:04,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:14:04,591 INFO L87 Difference]: Start difference. First operand 505 states and 621 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:06,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:06,215 INFO L93 Difference]: Finished difference Result 787 states and 1061 transitions. [2022-10-15 17:14:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 17:14:06,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-10-15 17:14:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:06,224 INFO L225 Difference]: With dead ends: 787 [2022-10-15 17:14:06,225 INFO L226 Difference]: Without dead ends: 787 [2022-10-15 17:14:06,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:14:06,226 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 1058 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:06,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1187 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-15 17:14:06,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-10-15 17:14:06,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 686. [2022-10-15 17:14:06,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 469 states have (on average 1.4989339019189765) internal successors, (703), 589 states have internal predecessors, (703), 60 states have call successors, (60), 32 states have call predecessors, (60), 47 states have return successors, (150), 64 states have call predecessors, (150), 60 states have call successors, (150) [2022-10-15 17:14:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 913 transitions. [2022-10-15 17:14:06,261 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 913 transitions. Word has length 26 [2022-10-15 17:14:06,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:06,261 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 913 transitions. [2022-10-15 17:14:06,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 913 transitions. [2022-10-15 17:14:06,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 17:14:06,265 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:06,265 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] [2022-10-15 17:14:06,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-15 17:14:06,267 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ASStopErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:06,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:06,268 INFO L85 PathProgramCache]: Analyzing trace with hash 496817328, now seen corresponding path program 1 times [2022-10-15 17:14:06,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:06,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575059089] [2022-10-15 17:14:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:06,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:06,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:06,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575059089] [2022-10-15 17:14:06,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575059089] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:06,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:06,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:14:06,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339042687] [2022-10-15 17:14:06,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:06,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:14:06,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:06,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:14:06,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:06,458 INFO L87 Difference]: Start difference. First operand 686 states and 913 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:07,213 INFO L93 Difference]: Finished difference Result 801 states and 1108 transitions. [2022-10-15 17:14:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:14:07,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-10-15 17:14:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:07,220 INFO L225 Difference]: With dead ends: 801 [2022-10-15 17:14:07,220 INFO L226 Difference]: Without dead ends: 801 [2022-10-15 17:14:07,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:14:07,221 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 309 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:07,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1595 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:14:07,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-10-15 17:14:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 752. [2022-10-15 17:14:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 526 states have (on average 1.4885931558935361) internal successors, (783), 649 states have internal predecessors, (783), 62 states have call successors, (62), 35 states have call predecessors, (62), 54 states have return successors, (167), 67 states have call predecessors, (167), 62 states have call successors, (167) [2022-10-15 17:14:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1012 transitions. [2022-10-15 17:14:07,250 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1012 transitions. Word has length 28 [2022-10-15 17:14:07,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:07,250 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1012 transitions. [2022-10-15 17:14:07,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:07,251 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1012 transitions. [2022-10-15 17:14:07,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 17:14:07,251 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:07,251 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] [2022-10-15 17:14:07,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-15 17:14:07,252 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ASStopErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:07,252 INFO L85 PathProgramCache]: Analyzing trace with hash 496817329, now seen corresponding path program 1 times [2022-10-15 17:14:07,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:07,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680268022] [2022-10-15 17:14:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:07,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:07,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:07,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:07,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680268022] [2022-10-15 17:14:07,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680268022] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:07,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:07,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 17:14:07,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904733303] [2022-10-15 17:14:07,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:07,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:14:07,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:07,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:14:07,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:07,580 INFO L87 Difference]: Start difference. First operand 752 states and 1012 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:08,537 INFO L93 Difference]: Finished difference Result 876 states and 1209 transitions. [2022-10-15 17:14:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:14:08,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-10-15 17:14:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:08,545 INFO L225 Difference]: With dead ends: 876 [2022-10-15 17:14:08,546 INFO L226 Difference]: Without dead ends: 876 [2022-10-15 17:14:08,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:14:08,547 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 279 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:08,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1656 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 17:14:08,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-10-15 17:14:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 844. [2022-10-15 17:14:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 601 states have (on average 1.4708818635607321) internal successors, (884), 728 states have internal predecessors, (884), 69 states have call successors, (69), 39 states have call predecessors, (69), 64 states have return successors, (197), 76 states have call predecessors, (197), 69 states have call successors, (197) [2022-10-15 17:14:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1150 transitions. [2022-10-15 17:14:08,580 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1150 transitions. Word has length 28 [2022-10-15 17:14:08,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:08,580 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1150 transitions. [2022-10-15 17:14:08,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:08,581 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1150 transitions. [2022-10-15 17:14:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-15 17:14:08,582 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:08,582 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] [2022-10-15 17:14:08,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-15 17:14:08,582 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ASIdleErr12ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:08,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:08,583 INFO L85 PathProgramCache]: Analyzing trace with hash -844436086, now seen corresponding path program 1 times [2022-10-15 17:14:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:08,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531158094] [2022-10-15 17:14:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:08,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:09,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531158094] [2022-10-15 17:14:09,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531158094] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:09,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:09,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-15 17:14:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812119751] [2022-10-15 17:14:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:09,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 17:14:09,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 17:14:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:14:09,032 INFO L87 Difference]: Start difference. First operand 844 states and 1150 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:09,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:09,780 INFO L93 Difference]: Finished difference Result 807 states and 1083 transitions. [2022-10-15 17:14:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:14:09,780 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-10-15 17:14:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:09,788 INFO L225 Difference]: With dead ends: 807 [2022-10-15 17:14:09,788 INFO L226 Difference]: Without dead ends: 807 [2022-10-15 17:14:09,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-10-15 17:14:09,790 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 216 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:09,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 2947 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 17:14:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-10-15 17:14:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 760. [2022-10-15 17:14:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 535 states have (on average 1.4953271028037383) internal successors, (800), 656 states have internal predecessors, (800), 64 states have call successors, (64), 36 states have call predecessors, (64), 51 states have return successors, (164), 67 states have call predecessors, (164), 64 states have call successors, (164) [2022-10-15 17:14:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1028 transitions. [2022-10-15 17:14:09,836 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1028 transitions. Word has length 31 [2022-10-15 17:14:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:09,837 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 1028 transitions. [2022-10-15 17:14:09,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1028 transitions. [2022-10-15 17:14:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 17:14:09,839 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:09,839 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] [2022-10-15 17:14:09,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-15 17:14:09,839 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ASStopErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:09,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1526253480, now seen corresponding path program 1 times [2022-10-15 17:14:09,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:09,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804307331] [2022-10-15 17:14:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:09,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:09,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:09,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:09,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804307331] [2022-10-15 17:14:09,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804307331] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:09,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:09,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283196907] [2022-10-15 17:14:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:09,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:09,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:09,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:09,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:09,986 INFO L87 Difference]: Start difference. First operand 760 states and 1028 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:10,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:10,557 INFO L93 Difference]: Finished difference Result 814 states and 1110 transitions. [2022-10-15 17:14:10,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:14:10,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-10-15 17:14:10,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:10,564 INFO L225 Difference]: With dead ends: 814 [2022-10-15 17:14:10,564 INFO L226 Difference]: Without dead ends: 814 [2022-10-15 17:14:10,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:10,565 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 525 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:10,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 585 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:14:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-10-15 17:14:10,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 767. [2022-10-15 17:14:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 540 states have (on average 1.4796296296296296) internal successors, (799), 663 states have internal predecessors, (799), 64 states have call successors, (64), 36 states have call predecessors, (64), 54 states have return successors, (168), 67 states have call predecessors, (168), 64 states have call successors, (168) [2022-10-15 17:14:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1031 transitions. [2022-10-15 17:14:10,593 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1031 transitions. Word has length 32 [2022-10-15 17:14:10,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:10,593 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 1031 transitions. [2022-10-15 17:14:10,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 17:14:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1031 transitions. [2022-10-15 17:14:10,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-15 17:14:10,594 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:10,594 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 17:14:10,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-15 17:14:10,595 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:10,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1795503433, now seen corresponding path program 1 times [2022-10-15 17:14:10,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:10,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734441373] [2022-10-15 17:14:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:10,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-15 17:14:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 17:14:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:10,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734441373] [2022-10-15 17:14:10,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734441373] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:10,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:10,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:10,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570165619] [2022-10-15 17:14:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:10,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:10,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:10,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:10,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:10,734 INFO L87 Difference]: Start difference. First operand 767 states and 1031 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:11,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:11,198 INFO L93 Difference]: Finished difference Result 773 states and 1039 transitions. [2022-10-15 17:14:11,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:14:11,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-10-15 17:14:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:11,205 INFO L225 Difference]: With dead ends: 773 [2022-10-15 17:14:11,205 INFO L226 Difference]: Without dead ends: 773 [2022-10-15 17:14:11,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:14:11,208 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 177 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:11,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 934 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:14:11,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-10-15 17:14:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 765. [2022-10-15 17:14:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 540 states have (on average 1.4759259259259259) internal successors, (797), 661 states have internal predecessors, (797), 64 states have call successors, (64), 36 states have call predecessors, (64), 54 states have return successors, (168), 67 states have call predecessors, (168), 64 states have call successors, (168) [2022-10-15 17:14:11,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1029 transitions. [2022-10-15 17:14:11,245 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1029 transitions. Word has length 34 [2022-10-15 17:14:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:11,245 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1029 transitions. [2022-10-15 17:14:11,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1029 transitions. [2022-10-15 17:14:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-15 17:14:11,246 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:11,247 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 17:14:11,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-15 17:14:11,247 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ASStartErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:11,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1795503432, now seen corresponding path program 1 times [2022-10-15 17:14:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:11,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768739832] [2022-10-15 17:14:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:11,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-15 17:14:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 17:14:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768739832] [2022-10-15 17:14:11,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768739832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:11,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:11,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-15 17:14:11,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575978249] [2022-10-15 17:14:11,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:11,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 17:14:11,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:11,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 17:14:11,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:14:11,688 INFO L87 Difference]: Start difference. First operand 765 states and 1029 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:12,372 INFO L93 Difference]: Finished difference Result 779 states and 1045 transitions. [2022-10-15 17:14:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 17:14:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-10-15 17:14:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:12,382 INFO L225 Difference]: With dead ends: 779 [2022-10-15 17:14:12,382 INFO L226 Difference]: Without dead ends: 779 [2022-10-15 17:14:12,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:12,384 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 222 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:12,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 2580 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 17:14:12,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-10-15 17:14:12,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 765. [2022-10-15 17:14:12,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 540 states have (on average 1.474074074074074) internal successors, (796), 661 states have internal predecessors, (796), 64 states have call successors, (64), 36 states have call predecessors, (64), 54 states have return successors, (168), 67 states have call predecessors, (168), 64 states have call successors, (168) [2022-10-15 17:14:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1028 transitions. [2022-10-15 17:14:12,451 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1028 transitions. Word has length 34 [2022-10-15 17:14:12,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:12,452 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1028 transitions. [2022-10-15 17:14:12,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1028 transitions. [2022-10-15 17:14:12,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 17:14:12,453 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:12,453 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] [2022-10-15 17:14:12,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-15 17:14:12,454 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:12,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1576983610, now seen corresponding path program 1 times [2022-10-15 17:14:12,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:12,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437125216] [2022-10-15 17:14:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:12,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 17:14:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:12,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:12,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437125216] [2022-10-15 17:14:12,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437125216] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:12,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:12,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-15 17:14:12,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923471682] [2022-10-15 17:14:12,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:12,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 17:14:12,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 17:14:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:14:12,882 INFO L87 Difference]: Start difference. First operand 765 states and 1028 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:14,685 INFO L93 Difference]: Finished difference Result 637 states and 833 transitions. [2022-10-15 17:14:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-15 17:14:14,685 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-10-15 17:14:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:14,690 INFO L225 Difference]: With dead ends: 637 [2022-10-15 17:14:14,691 INFO L226 Difference]: Without dead ends: 637 [2022-10-15 17:14:14,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2022-10-15 17:14:14,692 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1195 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:14,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 1153 Invalid, 2136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-15 17:14:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-10-15 17:14:14,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 544. [2022-10-15 17:14:14,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 357 states have (on average 1.5434173669467788) internal successors, (551), 471 states have internal predecessors, (551), 49 states have call successors, (49), 27 states have call predecessors, (49), 31 states have return successors, (110), 45 states have call predecessors, (110), 49 states have call successors, (110) [2022-10-15 17:14:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 710 transitions. [2022-10-15 17:14:14,725 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 710 transitions. Word has length 32 [2022-10-15 17:14:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:14,726 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 710 transitions. [2022-10-15 17:14:14,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 710 transitions. [2022-10-15 17:14:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-15 17:14:14,726 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:14,727 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] [2022-10-15 17:14:14,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-15 17:14:14,727 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1916439266, now seen corresponding path program 1 times [2022-10-15 17:14:14,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:14,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441339227] [2022-10-15 17:14:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:14,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:14,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:14,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:14,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:14,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441339227] [2022-10-15 17:14:14,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441339227] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:14,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:14,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:14:14,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685614360] [2022-10-15 17:14:14,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:14,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:14:14,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:14:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:14,911 INFO L87 Difference]: Start difference. First operand 544 states and 710 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:15,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:15,293 INFO L93 Difference]: Finished difference Result 606 states and 793 transitions. [2022-10-15 17:14:15,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:15,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-10-15 17:14:15,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:15,301 INFO L225 Difference]: With dead ends: 606 [2022-10-15 17:14:15,301 INFO L226 Difference]: Without dead ends: 604 [2022-10-15 17:14:15,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-10-15 17:14:15,303 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 156 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:15,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1346 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:14:15,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-10-15 17:14:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 562. [2022-10-15 17:14:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 372 states have (on average 1.5295698924731183) internal successors, (569), 487 states have internal predecessors, (569), 49 states have call successors, (49), 29 states have call predecessors, (49), 34 states have return successors, (106), 45 states have call predecessors, (106), 49 states have call successors, (106) [2022-10-15 17:14:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 724 transitions. [2022-10-15 17:14:15,324 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 724 transitions. Word has length 37 [2022-10-15 17:14:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:15,324 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 724 transitions. [2022-10-15 17:14:15,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 724 transitions. [2022-10-15 17:14:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-15 17:14:15,325 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:15,325 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] [2022-10-15 17:14:15,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-15 17:14:15,327 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:15,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash 960292098, now seen corresponding path program 1 times [2022-10-15 17:14:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:15,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858487709] [2022-10-15 17:14:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:15,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 17:14:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:15,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-15 17:14:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:15,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:15,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858487709] [2022-10-15 17:14:15,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858487709] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:15,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:15,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-15 17:14:15,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384089547] [2022-10-15 17:14:15,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:15,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 17:14:15,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:15,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 17:14:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:14:15,848 INFO L87 Difference]: Start difference. First operand 562 states and 724 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:16,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:16,854 INFO L93 Difference]: Finished difference Result 608 states and 795 transitions. [2022-10-15 17:14:16,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:14:16,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2022-10-15 17:14:16,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:16,860 INFO L225 Difference]: With dead ends: 608 [2022-10-15 17:14:16,860 INFO L226 Difference]: Without dead ends: 601 [2022-10-15 17:14:16,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:16,861 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 269 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:16,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 2243 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 17:14:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-10-15 17:14:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 562. [2022-10-15 17:14:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 372 states have (on average 1.5268817204301075) internal successors, (568), 487 states have internal predecessors, (568), 49 states have call successors, (49), 29 states have call predecessors, (49), 34 states have return successors, (107), 45 states have call predecessors, (107), 49 states have call successors, (107) [2022-10-15 17:14:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 724 transitions. [2022-10-15 17:14:16,884 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 724 transitions. Word has length 36 [2022-10-15 17:14:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:16,884 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 724 transitions. [2022-10-15 17:14:16,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:16,885 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 724 transitions. [2022-10-15 17:14:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-15 17:14:16,885 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:16,885 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] [2022-10-15 17:14:16,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-10-15 17:14:16,886 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:16,886 INFO L85 PathProgramCache]: Analyzing trace with hash -615298044, now seen corresponding path program 1 times [2022-10-15 17:14:16,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:16,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683975506] [2022-10-15 17:14:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:16,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:17,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:17,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683975506] [2022-10-15 17:14:17,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683975506] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:17,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:17,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-15 17:14:17,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184410073] [2022-10-15 17:14:17,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:17,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 17:14:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 17:14:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:14:17,307 INFO L87 Difference]: Start difference. First operand 562 states and 724 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:18,964 INFO L93 Difference]: Finished difference Result 847 states and 1194 transitions. [2022-10-15 17:14:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-15 17:14:18,965 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-10-15 17:14:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:18,973 INFO L225 Difference]: With dead ends: 847 [2022-10-15 17:14:18,973 INFO L226 Difference]: Without dead ends: 841 [2022-10-15 17:14:18,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-10-15 17:14:18,975 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 489 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:18,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 2889 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-15 17:14:18,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-10-15 17:14:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 769. [2022-10-15 17:14:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 538 states have (on average 1.4758364312267658) internal successors, (794), 649 states have internal predecessors, (794), 64 states have call successors, (64), 41 states have call predecessors, (64), 60 states have return successors, (241), 78 states have call predecessors, (241), 64 states have call successors, (241) [2022-10-15 17:14:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1099 transitions. [2022-10-15 17:14:19,021 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1099 transitions. Word has length 39 [2022-10-15 17:14:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:19,021 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 1099 transitions. [2022-10-15 17:14:19,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1099 transitions. [2022-10-15 17:14:19,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-15 17:14:19,022 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:19,022 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] [2022-10-15 17:14:19,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-10-15 17:14:19,023 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash 553374118, now seen corresponding path program 1 times [2022-10-15 17:14:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:19,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142238919] [2022-10-15 17:14:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:19,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:20,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:20,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:20,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:20,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142238919] [2022-10-15 17:14:20,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142238919] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:20,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:20,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-15 17:14:20,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16049999] [2022-10-15 17:14:20,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:20,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 17:14:20,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:20,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 17:14:20,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:14:20,078 INFO L87 Difference]: Start difference. First operand 769 states and 1099 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:21,289 INFO L93 Difference]: Finished difference Result 846 states and 1263 transitions. [2022-10-15 17:14:21,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:14:21,290 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-10-15 17:14:21,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:21,296 INFO L225 Difference]: With dead ends: 846 [2022-10-15 17:14:21,297 INFO L226 Difference]: Without dead ends: 846 [2022-10-15 17:14:21,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-10-15 17:14:21,298 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 389 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:21,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1914 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-15 17:14:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-10-15 17:14:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 780. [2022-10-15 17:14:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 547 states have (on average 1.469835466179159) internal successors, (804), 658 states have internal predecessors, (804), 65 states have call successors, (65), 42 states have call predecessors, (65), 61 states have return successors, (243), 79 states have call predecessors, (243), 65 states have call successors, (243) [2022-10-15 17:14:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1112 transitions. [2022-10-15 17:14:21,334 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1112 transitions. Word has length 41 [2022-10-15 17:14:21,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:21,335 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1112 transitions. [2022-10-15 17:14:21,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:21,336 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1112 transitions. [2022-10-15 17:14:21,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-15 17:14:21,336 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:21,336 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] [2022-10-15 17:14:21,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-10-15 17:14:21,337 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting system_initializeErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash 553374119, now seen corresponding path program 1 times [2022-10-15 17:14:21,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:21,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484100491] [2022-10-15 17:14:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:21,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:22,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:22,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:22,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484100491] [2022-10-15 17:14:22,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484100491] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:22,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:22,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-15 17:14:22,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285596606] [2022-10-15 17:14:22,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:22,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:14:22,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:22,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:14:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:14:22,940 INFO L87 Difference]: Start difference. First operand 780 states and 1112 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:24,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:24,229 INFO L93 Difference]: Finished difference Result 845 states and 1262 transitions. [2022-10-15 17:14:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:14:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-10-15 17:14:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:24,239 INFO L225 Difference]: With dead ends: 845 [2022-10-15 17:14:24,239 INFO L226 Difference]: Without dead ends: 845 [2022-10-15 17:14:24,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-10-15 17:14:24,241 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 535 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:24,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 1608 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-15 17:14:24,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-10-15 17:14:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 780. [2022-10-15 17:14:24,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 547 states have (on average 1.4680073126142597) internal successors, (803), 658 states have internal predecessors, (803), 65 states have call successors, (65), 42 states have call predecessors, (65), 61 states have return successors, (243), 79 states have call predecessors, (243), 65 states have call successors, (243) [2022-10-15 17:14:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1111 transitions. [2022-10-15 17:14:24,291 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1111 transitions. Word has length 41 [2022-10-15 17:14:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:24,292 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1111 transitions. [2022-10-15 17:14:24,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1111 transitions. [2022-10-15 17:14:24,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-15 17:14:24,293 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:24,293 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] [2022-10-15 17:14:24,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-10-15 17:14:24,293 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting system_initializeErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:24,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:24,294 INFO L85 PathProgramCache]: Analyzing trace with hash -783413049, now seen corresponding path program 1 times [2022-10-15 17:14:24,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:24,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351247253] [2022-10-15 17:14:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:24,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:24,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:24,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:24,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351247253] [2022-10-15 17:14:24,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351247253] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:24,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:24,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:24,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290598353] [2022-10-15 17:14:24,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:24,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:24,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:24,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:24,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:24,412 INFO L87 Difference]: Start difference. First operand 780 states and 1111 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:24,768 INFO L93 Difference]: Finished difference Result 796 states and 1151 transitions. [2022-10-15 17:14:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:14:24,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-10-15 17:14:24,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:24,774 INFO L225 Difference]: With dead ends: 796 [2022-10-15 17:14:24,774 INFO L226 Difference]: Without dead ends: 796 [2022-10-15 17:14:24,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:24,777 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 275 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:24,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 743 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:14:24,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-10-15 17:14:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 778. [2022-10-15 17:14:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 547 states have (on average 1.4606946983546618) internal successors, (799), 656 states have internal predecessors, (799), 65 states have call successors, (65), 42 states have call predecessors, (65), 61 states have return successors, (243), 79 states have call predecessors, (243), 65 states have call successors, (243) [2022-10-15 17:14:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1107 transitions. [2022-10-15 17:14:24,816 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1107 transitions. Word has length 43 [2022-10-15 17:14:24,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:24,816 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1107 transitions. [2022-10-15 17:14:24,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1107 transitions. [2022-10-15 17:14:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-15 17:14:24,817 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:24,817 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] [2022-10-15 17:14:24,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-10-15 17:14:24,818 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting system_initializeErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:24,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash -783413048, now seen corresponding path program 1 times [2022-10-15 17:14:24,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:24,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014294650] [2022-10-15 17:14:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:24,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:24,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:24,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014294650] [2022-10-15 17:14:24,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014294650] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:24,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:24,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:24,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770512854] [2022-10-15 17:14:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:24,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:24,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:24,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:24,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:24,961 INFO L87 Difference]: Start difference. First operand 778 states and 1107 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:25,341 INFO L93 Difference]: Finished difference Result 794 states and 1147 transitions. [2022-10-15 17:14:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:14:25,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-10-15 17:14:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:25,348 INFO L225 Difference]: With dead ends: 794 [2022-10-15 17:14:25,348 INFO L226 Difference]: Without dead ends: 794 [2022-10-15 17:14:25,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:25,349 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 269 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:25,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 746 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:14:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-10-15 17:14:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 776. [2022-10-15 17:14:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 547 states have (on average 1.453382084095064) internal successors, (795), 654 states have internal predecessors, (795), 65 states have call successors, (65), 42 states have call predecessors, (65), 61 states have return successors, (243), 79 states have call predecessors, (243), 65 states have call successors, (243) [2022-10-15 17:14:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1103 transitions. [2022-10-15 17:14:25,381 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1103 transitions. Word has length 43 [2022-10-15 17:14:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:25,381 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1103 transitions. [2022-10-15 17:14:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1103 transitions. [2022-10-15 17:14:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-15 17:14:25,382 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:25,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:25,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-10-15 17:14:25,383 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:25,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1255417078, now seen corresponding path program 1 times [2022-10-15 17:14:25,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:25,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796601965] [2022-10-15 17:14:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:25,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:25,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:25,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:25,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796601965] [2022-10-15 17:14:25,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796601965] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:25,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:25,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 17:14:25,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414813018] [2022-10-15 17:14:25,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:25,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:14:25,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:25,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:14:25,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:25,617 INFO L87 Difference]: Start difference. First operand 776 states and 1103 transitions. Second operand has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:26,397 INFO L93 Difference]: Finished difference Result 828 states and 1208 transitions. [2022-10-15 17:14:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:14:26,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2022-10-15 17:14:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:26,407 INFO L225 Difference]: With dead ends: 828 [2022-10-15 17:14:26,407 INFO L226 Difference]: Without dead ends: 828 [2022-10-15 17:14:26,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:26,409 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 363 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:26,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1641 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:14:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-10-15 17:14:26,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 801. [2022-10-15 17:14:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 568 states have (on average 1.4507042253521127) internal successors, (824), 676 states have internal predecessors, (824), 66 states have call successors, (66), 44 states have call predecessors, (66), 64 states have return successors, (248), 80 states have call predecessors, (248), 66 states have call successors, (248) [2022-10-15 17:14:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1138 transitions. [2022-10-15 17:14:26,453 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1138 transitions. Word has length 52 [2022-10-15 17:14:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:26,453 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 1138 transitions. [2022-10-15 17:14:26,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1138 transitions. [2022-10-15 17:14:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-15 17:14:26,455 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:26,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:26,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-10-15 17:14:26,456 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:26,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1255417079, now seen corresponding path program 1 times [2022-10-15 17:14:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:26,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916903274] [2022-10-15 17:14:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:26,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:27,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:27,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916903274] [2022-10-15 17:14:27,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916903274] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:27,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304561391] [2022-10-15 17:14:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:27,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:27,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:27,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:27,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:14:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:27,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-15 17:14:27,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:27,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:14:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:27,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:14:27,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304561391] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:27,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:14:27,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 22 [2022-10-15 17:14:27,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880237035] [2022-10-15 17:14:27,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:27,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:14:27,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:27,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:14:27,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:14:27,787 INFO L87 Difference]: Start difference. First operand 801 states and 1138 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:28,453 INFO L93 Difference]: Finished difference Result 809 states and 1161 transitions. [2022-10-15 17:14:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:28,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2022-10-15 17:14:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:28,459 INFO L225 Difference]: With dead ends: 809 [2022-10-15 17:14:28,460 INFO L226 Difference]: Without dead ends: 809 [2022-10-15 17:14:28,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-10-15 17:14:28,461 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 52 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:28,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1575 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 17:14:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-10-15 17:14:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 801. [2022-10-15 17:14:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 568 states have (on average 1.448943661971831) internal successors, (823), 676 states have internal predecessors, (823), 66 states have call successors, (66), 44 states have call predecessors, (66), 64 states have return successors, (248), 80 states have call predecessors, (248), 66 states have call successors, (248) [2022-10-15 17:14:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1137 transitions. [2022-10-15 17:14:28,498 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1137 transitions. Word has length 52 [2022-10-15 17:14:28,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:28,499 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 1137 transitions. [2022-10-15 17:14:28,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:28,499 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1137 transitions. [2022-10-15 17:14:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-15 17:14:28,500 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:28,500 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 17:14:28,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:28,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:28,713 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash 252155595, now seen corresponding path program 1 times [2022-10-15 17:14:28,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:28,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418952178] [2022-10-15 17:14:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:28,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:28,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:28,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:28,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418952178] [2022-10-15 17:14:28,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418952178] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:28,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:28,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 17:14:28,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772272955] [2022-10-15 17:14:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:28,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:14:28,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:28,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:14:28,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:28,977 INFO L87 Difference]: Start difference. First operand 801 states and 1137 transitions. Second operand has 9 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:29,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:29,918 INFO L93 Difference]: Finished difference Result 906 states and 1315 transitions. [2022-10-15 17:14:29,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:14:29,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2022-10-15 17:14:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:29,925 INFO L225 Difference]: With dead ends: 906 [2022-10-15 17:14:29,925 INFO L226 Difference]: Without dead ends: 906 [2022-10-15 17:14:29,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:29,926 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 353 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:29,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1701 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 17:14:29,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-10-15 17:14:29,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 812. [2022-10-15 17:14:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 577 states have (on average 1.4488734835355286) internal successors, (836), 685 states have internal predecessors, (836), 67 states have call successors, (67), 45 states have call predecessors, (67), 65 states have return successors, (251), 81 states have call predecessors, (251), 67 states have call successors, (251) [2022-10-15 17:14:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1154 transitions. [2022-10-15 17:14:29,961 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1154 transitions. Word has length 53 [2022-10-15 17:14:29,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:29,961 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1154 transitions. [2022-10-15 17:14:29,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:29,962 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1154 transitions. [2022-10-15 17:14:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-15 17:14:29,962 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:29,963 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 17:14:29,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-10-15 17:14:29,963 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:29,964 INFO L85 PathProgramCache]: Analyzing trace with hash 252155596, now seen corresponding path program 1 times [2022-10-15 17:14:29,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:29,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581719268] [2022-10-15 17:14:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:29,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:30,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:30,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:30,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:30,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581719268] [2022-10-15 17:14:30,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581719268] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:30,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:30,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 17:14:30,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863561262] [2022-10-15 17:14:30,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:30,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:14:30,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:30,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:14:30,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:30,372 INFO L87 Difference]: Start difference. First operand 812 states and 1154 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:31,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:31,279 INFO L93 Difference]: Finished difference Result 838 states and 1218 transitions. [2022-10-15 17:14:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:14:31,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2022-10-15 17:14:31,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:31,286 INFO L225 Difference]: With dead ends: 838 [2022-10-15 17:14:31,286 INFO L226 Difference]: Without dead ends: 838 [2022-10-15 17:14:31,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:14:31,289 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 366 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:31,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1648 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 17:14:31,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-10-15 17:14:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 812. [2022-10-15 17:14:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 577 states have (on average 1.4471403812824957) internal successors, (835), 685 states have internal predecessors, (835), 67 states have call successors, (67), 45 states have call predecessors, (67), 65 states have return successors, (251), 81 states have call predecessors, (251), 67 states have call successors, (251) [2022-10-15 17:14:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1153 transitions. [2022-10-15 17:14:31,324 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1153 transitions. Word has length 53 [2022-10-15 17:14:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:31,325 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1153 transitions. [2022-10-15 17:14:31,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:31,325 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1153 transitions. [2022-10-15 17:14:31,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-15 17:14:31,329 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:31,329 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 17:14:31,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-10-15 17:14:31,329 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ASIdleErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:31,330 INFO L85 PathProgramCache]: Analyzing trace with hash -783668556, now seen corresponding path program 1 times [2022-10-15 17:14:31,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:31,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577360085] [2022-10-15 17:14:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:31,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:31,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:31,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:31,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577360085] [2022-10-15 17:14:31,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577360085] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:31,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:31,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 17:14:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60789107] [2022-10-15 17:14:31,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:31,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:14:31,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:31,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:14:31,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:31,762 INFO L87 Difference]: Start difference. First operand 812 states and 1153 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:32,816 INFO L93 Difference]: Finished difference Result 906 states and 1333 transitions. [2022-10-15 17:14:32,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:14:32,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-10-15 17:14:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:32,829 INFO L225 Difference]: With dead ends: 906 [2022-10-15 17:14:32,829 INFO L226 Difference]: Without dead ends: 906 [2022-10-15 17:14:32,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:32,831 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 238 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:32,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1804 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-15 17:14:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-10-15 17:14:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 871. [2022-10-15 17:14:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 625 states have (on average 1.44) internal successors, (900), 734 states have internal predecessors, (900), 72 states have call successors, (72), 49 states have call predecessors, (72), 71 states have return successors, (279), 87 states have call predecessors, (279), 72 states have call successors, (279) [2022-10-15 17:14:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1251 transitions. [2022-10-15 17:14:32,867 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1251 transitions. Word has length 54 [2022-10-15 17:14:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:32,867 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1251 transitions. [2022-10-15 17:14:32,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:32,867 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1251 transitions. [2022-10-15 17:14:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-15 17:14:32,868 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:32,868 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 17:14:32,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-10-15 17:14:32,869 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ASIdleErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:32,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:32,869 INFO L85 PathProgramCache]: Analyzing trace with hash -783668557, now seen corresponding path program 1 times [2022-10-15 17:14:32,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:32,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250830345] [2022-10-15 17:14:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:32,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:33,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 17:14:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:33,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:33,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250830345] [2022-10-15 17:14:33,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250830345] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:33,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:33,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 17:14:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425213921] [2022-10-15 17:14:33,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:14:33,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:33,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:14:33,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:33,111 INFO L87 Difference]: Start difference. First operand 871 states and 1251 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:34,011 INFO L93 Difference]: Finished difference Result 957 states and 1426 transitions. [2022-10-15 17:14:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:14:34,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-10-15 17:14:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:34,018 INFO L225 Difference]: With dead ends: 957 [2022-10-15 17:14:34,018 INFO L226 Difference]: Without dead ends: 957 [2022-10-15 17:14:34,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:34,020 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 448 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:34,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1631 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 17:14:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-10-15 17:14:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 891. [2022-10-15 17:14:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 640 states have (on average 1.428125) internal successors, (914), 751 states have internal predecessors, (914), 72 states have call successors, (72), 49 states have call predecessors, (72), 76 states have return successors, (290), 90 states have call predecessors, (290), 72 states have call successors, (290) [2022-10-15 17:14:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1276 transitions. [2022-10-15 17:14:34,057 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1276 transitions. Word has length 54 [2022-10-15 17:14:34,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:34,057 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1276 transitions. [2022-10-15 17:14:34,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1276 transitions. [2022-10-15 17:14:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-15 17:14:34,058 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:34,058 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 17:14:34,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-10-15 17:14:34,059 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ASStopErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2022-10-15 17:14:34,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:34,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1465302152, now seen corresponding path program 1 times [2022-10-15 17:14:34,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:34,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114297959] [2022-10-15 17:14:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:34,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat