/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.dpor-d6e1636 [2023-01-10 13:23:19,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-10 13:23:19,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-10 13:23:19,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-10 13:23:19,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-10 13:23:19,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-10 13:23:19,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-10 13:23:19,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-10 13:23:19,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-10 13:23:19,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-10 13:23:19,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-10 13:23:19,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-10 13:23:19,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-10 13:23:19,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-10 13:23:19,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-10 13:23:19,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-10 13:23:19,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-10 13:23:19,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-10 13:23:19,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-10 13:23:19,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-10 13:23:19,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-10 13:23:19,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-10 13:23:19,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-10 13:23:19,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-10 13:23:19,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-10 13:23:19,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-10 13:23:19,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-10 13:23:19,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-10 13:23:19,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-10 13:23:19,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-10 13:23:19,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-10 13:23:19,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-10 13:23:19,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-10 13:23:19,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-10 13:23:19,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-10 13:23:19,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-10 13:23:19,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-10 13:23:19,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-10 13:23:19,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-10 13:23:19,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-10 13:23:19,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-10 13:23:19,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf [2023-01-10 13:23:19,110 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-10 13:23:19,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-10 13:23:19,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-01-10 13:23:19,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-01-10 13:23:19,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-10 13:23:19,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-10 13:23:19,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-10 13:23:19,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-10 13:23:19,112 INFO L138 SettingsManager]: * Use SBE=true [2023-01-10 13:23:19,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-10 13:23:19,113 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-10 13:23:19,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-10 13:23:19,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-10 13:23:19,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-10 13:23:19,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-10 13:23:19,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-10 13:23:19,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-10 13:23:19,114 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-10 13:23:19,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-10 13:23:19,114 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-10 13:23:19,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-10 13:23:19,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-10 13:23:19,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-10 13:23:19,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-10 13:23:19,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-10 13:23:19,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-10 13:23:19,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-10 13:23:19,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-10 13:23:19,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-10 13:23:19,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-10 13:23:19,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-10 13:23:19,115 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-01-10 13:23:19,115 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-01-10 13:23:19,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-01-10 13:23:19,115 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2023-01-10 13:23:19,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION [2023-01-10 13:23:19,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-10 13:23:19,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-10 13:23:19,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-10 13:23:19,314 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-10 13:23:19,314 INFO L275 PluginConnector]: CDTParser initialized [2023-01-10 13:23:19,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-01-10 13:23:20,287 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-10 13:23:20,448 INFO L351 CDTParser]: Found 1 translation units. [2023-01-10 13:23:20,449 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-01-10 13:23:20,453 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb570d207/55d82a27ba4f4a4ab92fb7b735019b18/FLAGeff9e9682 [2023-01-10 13:23:20,463 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb570d207/55d82a27ba4f4a4ab92fb7b735019b18 [2023-01-10 13:23:20,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-10 13:23:20,465 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-10 13:23:20,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-10 13:23:20,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-10 13:23:20,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-10 13:23:20,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f534239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20, skipping insertion in model container [2023-01-10 13:23:20,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-10 13:23:20,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-10 13:23:20,635 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2023-01-10 13:23:20,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-10 13:23:20,646 INFO L203 MainTranslator]: Completed pre-run [2023-01-10 13:23:20,666 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2023-01-10 13:23:20,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-10 13:23:20,673 WARN L663 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-10 13:23:20,673 WARN L663 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-10 13:23:20,677 INFO L208 MainTranslator]: Completed translation [2023-01-10 13:23:20,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20 WrapperNode [2023-01-10 13:23:20,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-10 13:23:20,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-10 13:23:20,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-10 13:23:20,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-10 13:23:20,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,706 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 330 [2023-01-10 13:23:20,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-10 13:23:20,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-10 13:23:20,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-10 13:23:20,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-10 13:23:20,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-10 13:23:20,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-10 13:23:20,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-10 13:23:20,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-10 13:23:20,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (1/1) ... [2023-01-10 13:23:20,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-10 13:23:20,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:23:20,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-10 13:23:20,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-10 13:23:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-10 13:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-10 13:23:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-10 13:23:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-10 13:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-10 13:23:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-10 13:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-10 13:23:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-10 13:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-10 13:23:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-10 13:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-10 13:23:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-10 13:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-10 13:23:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-10 13:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-10 13:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-10 13:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-10 13:23:20,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-10 13:23:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-10 13:23:20,808 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-10 13:23:20,947 INFO L236 CfgBuilder]: Building ICFG [2023-01-10 13:23:20,948 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-10 13:23:21,295 INFO L277 CfgBuilder]: Performing block encoding [2023-01-10 13:23:21,415 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-10 13:23:21,415 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-10 13:23:21,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:23:21 BoogieIcfgContainer [2023-01-10 13:23:21,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-10 13:23:21,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-10 13:23:21,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-10 13:23:21,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-10 13:23:21,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:23:20" (1/3) ... [2023-01-10 13:23:21,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340ad2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:23:21, skipping insertion in model container [2023-01-10 13:23:21,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:23:20" (2/3) ... [2023-01-10 13:23:21,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340ad2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:23:21, skipping insertion in model container [2023-01-10 13:23:21,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:23:21" (3/3) ... [2023-01-10 13:23:21,436 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2023-01-10 13:23:21,442 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-01-10 13:23:21,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-10 13:23:21,448 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-10 13:23:21,448 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-10 13:23:21,510 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-10 13:23:21,550 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-01-10 13:23:21,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-01-10 13:23:21,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:23:21,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-01-10 13:23:21,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-01-10 13:23:21,585 INFO L164 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-01-10 13:23:21,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2023-01-10 13:23:21,595 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a49c458, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-01-10 13:23:21,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-10 13:23:21,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash -389340255, now seen corresponding path program 1 times [2023-01-10 13:23:21,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:21,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733832081] [2023-01-10 13:23:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:21,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-01-10 13:23:22,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:23:22,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733832081] [2023-01-10 13:23:22,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733832081] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-10 13:23:22,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-10 13:23:22,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-10 13:23:22,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704096166] [2023-01-10 13:23:22,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-10 13:23:22,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-10 13:23:22,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:23:22,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-10 13:23:22,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-10 13:23:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:22,159 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:23:22,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:23:22,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:22,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-10 13:23:22,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:22,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:22,241 INFO L85 PathProgramCache]: Analyzing trace with hash 662132512, now seen corresponding path program 1 times [2023-01-10 13:23:22,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:22,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438040098] [2023-01-10 13:23:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:22,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-10 13:23:22,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:23:22,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438040098] [2023-01-10 13:23:22,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438040098] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-10 13:23:22,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-10 13:23:22,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-10 13:23:22,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962351316] [2023-01-10 13:23:22,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-10 13:23:22,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-10 13:23:22,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:23:22,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-10 13:23:22,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-10 13:23:22,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:22,748 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:23:22,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:23:22,749 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:22,749 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:22,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:22,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-10 13:23:22,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:22,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1669335379, now seen corresponding path program 1 times [2023-01-10 13:23:22,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:22,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720833928] [2023-01-10 13:23:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:22,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-10 13:23:23,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:23:23,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720833928] [2023-01-10 13:23:23,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720833928] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-10 13:23:23,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-10 13:23:23,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-10 13:23:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272633615] [2023-01-10 13:23:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-10 13:23:23,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-10 13:23:23,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:23:23,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-10 13:23:23,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-10 13:23:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:23,203 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:23:23,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:23:23,203 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:23,203 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:23,203 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:23,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-10 13:23:23,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1396713190, now seen corresponding path program 1 times [2023-01-10 13:23:23,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:23,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97097408] [2023-01-10 13:23:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:23,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-10 13:23:23,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:23:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97097408] [2023-01-10 13:23:23,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97097408] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-10 13:23:23,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811976048] [2023-01-10 13:23:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:23,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:23,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:23:23,762 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-10 13:23:23,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-10 13:23:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:23,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-10 13:23:23,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-10 13:23:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-10 13:23:24,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-10 13:23:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-10 13:23:24,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811976048] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-10 13:23:24,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-10 13:23:24,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-01-10 13:23:24,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897962820] [2023-01-10 13:23:24,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-10 13:23:24,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-10 13:23:24,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:23:24,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-10 13:23:24,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-01-10 13:23:24,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:24,466 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:23:24,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.842105263157896) internal successors, (301), 19 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:23:24,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:24,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:24,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:24,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:24,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-10 13:23:24,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-10 13:23:24,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:24,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:24,981 INFO L85 PathProgramCache]: Analyzing trace with hash 571280927, now seen corresponding path program 2 times [2023-01-10 13:23:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:24,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894859620] [2023-01-10 13:23:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:24,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-01-10 13:23:25,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:23:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894859620] [2023-01-10 13:23:25,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894859620] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-10 13:23:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032239110] [2023-01-10 13:23:25,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-10 13:23:25,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:25,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:23:25,318 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-10 13:23:25,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-10 13:23:25,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-10 13:23:25,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-10 13:23:25,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-10 13:23:25,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-10 13:23:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-01-10 13:23:25,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-10 13:23:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-01-10 13:23:25,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032239110] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-10 13:23:25,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-10 13:23:25,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-01-10 13:23:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506097089] [2023-01-10 13:23:25,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-10 13:23:25,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-10 13:23:25,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:23:25,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-10 13:23:25,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-01-10 13:23:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:25,960 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:23:25,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.842105263157896) internal successors, (301), 19 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:23:25,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:25,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:25,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:25,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:25,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:26,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-10 13:23:26,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:26,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:26,446 INFO L85 PathProgramCache]: Analyzing trace with hash -847046996, now seen corresponding path program 3 times [2023-01-10 13:23:26,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:26,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059004970] [2023-01-10 13:23:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:26,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-01-10 13:23:27,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:23:27,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059004970] [2023-01-10 13:23:27,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059004970] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-10 13:23:27,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821283746] [2023-01-10 13:23:27,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-10 13:23:27,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:27,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:23:27,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-10 13:23:27,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-10 13:23:27,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-10 13:23:27,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-10 13:23:27,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-10 13:23:27,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-10 13:23:28,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2023-01-10 13:23:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-10 13:23:29,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-10 13:23:30,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2023-01-10 13:23:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-10 13:23:31,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821283746] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-10 13:23:31,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-10 13:23:31,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 31, 31] total 70 [2023-01-10 13:23:31,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423261879] [2023-01-10 13:23:31,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-10 13:23:31,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-01-10 13:23:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:23:31,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-01-10 13:23:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=587, Invalid=4243, Unknown=0, NotChecked=0, Total=4830 [2023-01-10 13:23:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:31,739 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:23:31,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 8.957142857142857) internal successors, (627), 70 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:23:31,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:31,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:31,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:31,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:31,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:31,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:23:35,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-10 13:23:35,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:35,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:35,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:35,503 INFO L85 PathProgramCache]: Analyzing trace with hash 943098115, now seen corresponding path program 4 times [2023-01-10 13:23:35,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:35,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101037121] [2023-01-10 13:23:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-01-10 13:23:36,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:23:36,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101037121] [2023-01-10 13:23:36,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101037121] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-10 13:23:36,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168043040] [2023-01-10 13:23:36,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-10 13:23:36,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:36,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:23:36,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-10 13:23:36,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-10 13:23:36,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-10 13:23:36,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-10 13:23:36,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-10 13:23:36,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-10 13:23:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 40 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-01-10 13:23:36,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-10 13:23:36,880 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-10 13:23:36,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 4 [2023-01-10 13:23:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 26 proven. 41 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-01-10 13:23:37,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168043040] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-10 13:23:37,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-10 13:23:37,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 15] total 35 [2023-01-10 13:23:37,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242414683] [2023-01-10 13:23:37,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-10 13:23:37,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-10 13:23:37,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:23:37,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-10 13:23:37,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2023-01-10 13:23:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:37,175 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:23:37,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 12.6) internal successors, (441), 35 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:23:37,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:37,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:37,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:37,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:37,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:37,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:23:37,175 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:23:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-10 13:23:38,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-10 13:23:38,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:38,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:38,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1524381213, now seen corresponding path program 5 times [2023-01-10 13:23:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:38,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274771923] [2023-01-10 13:23:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:38,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 40 proven. 202 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-01-10 13:23:39,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:23:39,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274771923] [2023-01-10 13:23:39,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274771923] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-10 13:23:39,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731042859] [2023-01-10 13:23:39,114 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-10 13:23:39,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:39,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:23:39,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-10 13:23:39,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-10 13:23:39,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-01-10 13:23:39,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-10 13:23:39,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-10 13:23:39,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-10 13:23:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 270 proven. 52 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-01-10 13:23:39,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-10 13:23:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 142 proven. 180 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-01-10 13:23:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731042859] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-10 13:23:40,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-10 13:23:40,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 23] total 57 [2023-01-10 13:23:40,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155707957] [2023-01-10 13:23:40,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-10 13:23:40,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-01-10 13:23:40,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:23:40,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-01-10 13:23:40,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2550, Unknown=0, NotChecked=0, Total=3192 [2023-01-10 13:23:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:40,539 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:23:40,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 9.333333333333334) internal successors, (532), 57 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:23:40,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:40,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:40,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:40,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:40,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:40,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:23:40,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2023-01-10 13:23:40,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:23:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-10 13:23:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-10 13:23:41,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-10 13:23:41,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:41,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:41,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1897325218, now seen corresponding path program 6 times [2023-01-10 13:23:41,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:41,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710789666] [2023-01-10 13:23:41,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:41,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 171 proven. 396 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-01-10 13:23:42,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:23:42,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710789666] [2023-01-10 13:23:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710789666] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-10 13:23:42,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482681145] [2023-01-10 13:23:42,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-10 13:23:42,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:42,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:23:42,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-10 13:23:42,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-10 13:23:43,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-01-10 13:23:43,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-10 13:23:43,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-10 13:23:43,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-10 13:23:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 270 proven. 297 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-01-10 13:23:44,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-10 13:23:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 142 proven. 425 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-01-10 13:23:45,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482681145] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-10 13:23:45,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-10 13:23:45,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 91 [2023-01-10 13:23:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696372495] [2023-01-10 13:23:45,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-10 13:23:45,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-01-10 13:23:45,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:23:45,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-01-10 13:23:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1237, Invalid=6953, Unknown=0, NotChecked=0, Total=8190 [2023-01-10 13:23:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:45,598 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:23:45,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 6.516483516483516) internal successors, (593), 91 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:23:45,598 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:45,598 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:45,598 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:45,598 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:45,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:45,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:23:45,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2023-01-10 13:23:45,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2023-01-10 13:23:45,599 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:23:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-10 13:23:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-10 13:23:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-10 13:23:46,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-10 13:23:46,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:46,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2003304085, now seen corresponding path program 7 times [2023-01-10 13:23:46,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664245214] [2023-01-10 13:23:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:46,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 137 proven. 110 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-01-10 13:23:47,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:23:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664245214] [2023-01-10 13:23:47,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664245214] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-10 13:23:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302445379] [2023-01-10 13:23:47,838 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-10 13:23:47,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:23:47,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:23:47,839 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-10 13:23:47,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-10 13:23:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:23:48,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-10 13:23:48,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-10 13:23:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 137 proven. 110 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-01-10 13:23:48,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-10 13:23:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 47 proven. 262 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-01-10 13:23:48,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302445379] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-10 13:23:48,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-10 13:23:48,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 23] total 33 [2023-01-10 13:23:48,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754482545] [2023-01-10 13:23:48,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-10 13:23:48,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-01-10 13:23:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:23:48,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-01-10 13:23:48,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2023-01-10 13:23:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:48,791 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:23:48,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.606060606060606) internal successors, (383), 33 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:23:48,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:48,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:48,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:48,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:48,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:48,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:23:48,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2023-01-10 13:23:48,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2023-01-10 13:23:48,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2023-01-10 13:23:48,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:23:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:23:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:23:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:23:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:23:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:23:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-10 13:23:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-10 13:23:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-10 13:23:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-10 13:23:49,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-10 13:23:49,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-10 13:23:49,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:23:49,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:23:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2144087024, now seen corresponding path program 8 times [2023-01-10 13:23:49,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:23:49,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326031295] [2023-01-10 13:23:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:23:49,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:23:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:24:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 17 proven. 709 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-10 13:24:18,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:24:18,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326031295] [2023-01-10 13:24:18,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326031295] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-10 13:24:18,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044874284] [2023-01-10 13:24:18,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-10 13:24:18,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:24:18,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:24:18,659 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-10 13:24:18,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-10 13:24:18,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-10 13:24:18,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-10 13:24:19,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 290 conjunts are in the unsatisfiable core [2023-01-10 13:24:19,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-10 13:24:33,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-10 13:24:33,730 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-10 13:24:33,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-10 13:24:33,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-10 13:24:33,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-10 13:24:33,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-10 13:24:33,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-10 13:24:33,843 INFO L321 Elim1Store]: treesize reduction 242, result has 42.8 percent of original size [2023-01-10 13:24:33,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 45 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 332 treesize of output 236 [2023-01-10 13:24:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 10 proven. 716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-10 13:24:34,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-10 13:24:46,998 INFO L321 Elim1Store]: treesize reduction 1772, result has 43.7 percent of original size [2023-01-10 13:24:46,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 280 treesize of output 1443 [2023-01-10 13:24:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-10 13:24:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044874284] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-10 13:24:59,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-10 13:24:59,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 74, 69] total 220 [2023-01-10 13:24:59,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247978103] [2023-01-10 13:24:59,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-10 13:24:59,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 220 states [2023-01-10 13:24:59,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-10 13:24:59,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2023-01-10 13:24:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4777, Invalid=43403, Unknown=0, NotChecked=0, Total=48180 [2023-01-10 13:24:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:24:59,952 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-01-10 13:24:59,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 220 states, 220 states have (on average 4.6454545454545455) internal successors, (1022), 220 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-01-10 13:24:59,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:25:37,893 WARN L222 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 320 DAG size of output: 307 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-10 13:25:50,946 WARN L222 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 282 DAG size of output: 268 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-10 13:26:35,014 WARN L222 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 337 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-10 13:26:41,207 WARN L222 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 299 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-10 13:26:51,418 WARN L222 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 309 DAG size of output: 292 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-10 13:26:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-01-10 13:26:56,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-10 13:26:56,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:26:56,473 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-10 13:26:56,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-01-10 13:26:56,474 INFO L85 PathProgramCache]: Analyzing trace with hash 179500610, now seen corresponding path program 9 times [2023-01-10 13:26:56,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-10 13:26:56,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839284103] [2023-01-10 13:26:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-10 13:26:56,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-10 13:26:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-10 13:26:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 189 proven. 134 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-01-10 13:26:57,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-10 13:26:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839284103] [2023-01-10 13:26:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839284103] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-10 13:26:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797946755] [2023-01-10 13:26:57,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-10 13:26:57,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-10 13:26:57,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 13:26:57,478 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-10 13:26:57,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-10 13:26:58,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-01-10 13:26:58,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-10 13:26:58,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 238 conjunts are in the unsatisfiable core [2023-01-10 13:26:58,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-10 13:27:25,907 WARN L222 SmtUtils]: Spent 16.81s on a formula simplification. DAG size of input: 991 DAG size of output: 929 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-01-10 13:27:25,947 INFO L321 Elim1Store]: treesize reduction 303, result has 93.5 percent of original size [2023-01-10 13:27:25,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 26 select indices, 26 select index equivalence classes, 0 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 325 case distinctions, treesize of input 636 treesize of output 4496 [2023-01-10 13:36:52,639 WARN L222 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 793 DAG size of output: 937 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-10 13:37:16,880 WARN L222 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 781 DAG size of output: 925 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-10 13:37:19,879 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-10 13:37:19,883 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-10 13:37:19,885 WARN L238 SmtUtils]: Removed 1 from assertion stack [2023-01-10 13:37:19,888 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-01-10 13:37:19,898 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-10 13:37:19,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-10 13:37:20,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-10 13:37:20,096 WARN L619 AbstractCegarLoop]: Verification canceled: while PartialOrderCegarLoop was analyzing trace of length 366 with TraceHistMax 11,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-13-3-21-5-15-3-14-5-18-4-16-5-16-3-16-3-23-4-18-4-15-2-14-2-14-2-14-2-6-3-17-3-13-3-14-2-14-2-13-2-14-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-232-21-14-16-3-14-5-18-4-18-5-16-3-15-3-23-3-15-4-15-2-11-2-11-2-11-2-6-3-17-3-13-3-13-2-14-2-13-2-12-1 context. [2023-01-10 13:37:20,105 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1] [2023-01-10 13:37:20,107 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was TIMEOUT (1/5) [2023-01-10 13:37:20,108 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-10 13:37:20,108 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-10 13:37:20,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:37:20 BasicIcfg [2023-01-10 13:37:20,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-10 13:37:20,110 INFO L158 Benchmark]: Toolchain (without parser) took 839644.99ms. Allocated memory was 283.1MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 243.8MB in the beginning and 1.1GB in the end (delta: -877.2MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-01-10 13:37:20,110 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 218.1MB. Free memory is still 168.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-01-10 13:37:20,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.70ms. Allocated memory is still 283.1MB. Free memory was 243.8MB in the beginning and 230.9MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-01-10 13:37:20,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.62ms. Allocated memory is still 283.1MB. Free memory was 230.9MB in the beginning and 228.2MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-01-10 13:37:20,111 INFO L158 Benchmark]: Boogie Preprocessor took 28.11ms. Allocated memory is still 283.1MB. Free memory was 228.2MB in the beginning and 226.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-01-10 13:37:20,111 INFO L158 Benchmark]: RCFGBuilder took 682.34ms. Allocated memory is still 283.1MB. Free memory was 226.1MB in the beginning and 179.5MB in the end (delta: 46.5MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2023-01-10 13:37:20,111 INFO L158 Benchmark]: TraceAbstraction took 838678.04ms. Allocated memory was 283.1MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 249.0MB in the beginning and 1.1GB in the end (delta: -872.0MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-01-10 13:37:20,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 218.1MB. Free memory is still 168.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 211.70ms. Allocated memory is still 283.1MB. Free memory was 243.8MB in the beginning and 230.9MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.62ms. Allocated memory is still 283.1MB. Free memory was 230.9MB in the beginning and 228.2MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.11ms. Allocated memory is still 283.1MB. Free memory was 228.2MB in the beginning and 226.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 682.34ms. Allocated memory is still 283.1MB. Free memory was 226.1MB in the beginning and 179.5MB in the end (delta: 46.5MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. * TraceAbstraction took 838678.04ms. Allocated memory was 283.1MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 249.0MB in the beginning and 1.1GB in the end (delta: -872.0MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 129548, independent: 111512, independent conditional: 111512, independent unconditional: 0, dependent: 18036, dependent conditional: 18036, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 113231, independent: 111512, independent conditional: 111512, independent unconditional: 0, dependent: 1719, dependent conditional: 1719, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 113231, independent: 111512, independent conditional: 111512, independent unconditional: 0, dependent: 1719, dependent conditional: 1719, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 118701, independent: 111512, independent conditional: 186, independent unconditional: 111326, dependent: 7189, dependent conditional: 5284, dependent unconditional: 1905, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 118701, independent: 111512, independent conditional: 186, independent unconditional: 111326, dependent: 7189, dependent conditional: 3659, dependent unconditional: 3530, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 118701, independent: 111512, independent conditional: 186, independent unconditional: 111326, dependent: 7189, dependent conditional: 3659, dependent unconditional: 3530, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 643, independent: 584, independent conditional: 13, independent unconditional: 571, dependent: 59, dependent conditional: 50, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 643, independent: 569, independent conditional: 0, independent unconditional: 569, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 74, independent: 15, independent conditional: 13, independent unconditional: 2, dependent: 59, dependent conditional: 50, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 74, independent: 15, independent conditional: 13, independent unconditional: 2, dependent: 59, dependent conditional: 50, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 361, independent: 62, independent conditional: 47, independent unconditional: 15, dependent: 299, dependent conditional: 232, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 118701, independent: 110928, independent conditional: 173, independent unconditional: 110755, dependent: 7130, dependent conditional: 3609, dependent unconditional: 3521, unknown: 643, unknown conditional: 63, unknown unconditional: 580] , Statistics on independence cache: Total cache size (in pairs): 643, Positive cache size: 584, Positive conditional cache size: 13, Positive unconditional cache size: 571, Negative cache size: 59, Negative conditional cache size: 50, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 1625, Maximal queried relation: 6, Independence queries for same thread: 16317 - StatisticsResult: Traversal Statistics Data States: 1214, Transitions: 1828, Traversal time: 212628381.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 126 - StatisticsResult: Traversal Statistics Data States: 1214, Transitions: 1835, Traversal time: 58976418.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 126 - StatisticsResult: Traversal Statistics Data States: 1221, Transitions: 1842, Traversal time: 144266621.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 126 - StatisticsResult: Traversal Statistics Data States: 1228, Transitions: 1849, Traversal time: 157601308.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 126 - StatisticsResult: Traversal Statistics Data States: 1236, Transitions: 1857, Traversal time: 289162400.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 126 - StatisticsResult: Traversal Statistics Data States: 1244, Transitions: 1865, Traversal time: 261635445.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 126 - StatisticsResult: Traversal Statistics Data States: 1053, Transitions: 1476, Traversal time: 2455208247.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 111 - StatisticsResult: Traversal Statistics Data States: 3602, Transitions: 5209, Traversal time: 881330413.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 460 - StatisticsResult: Traversal Statistics Data States: 3636, Transitions: 5243, Traversal time: 906922544.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 460 - StatisticsResult: Traversal Statistics Data States: 3650, Transitions: 5257, Traversal time: 1024741695.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 460 - StatisticsResult: Traversal Statistics Data States: 3654, Transitions: 5261, Traversal time: 320072948.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 460 - StatisticsResult: Traversal Statistics Data States: 3679, Transitions: 5289, Traversal time: 79737489667.0ns - StatisticsResult: Traversal Statistics Data Sleep-blocked states: 462 - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PartialOrderCegarLoop was analyzing trace of length 366 with TraceHistMax 11,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-13-3-21-5-15-3-14-5-18-4-16-5-16-3-16-3-23-4-18-4-15-2-14-2-14-2-14-2-6-3-17-3-13-3-14-2-14-2-13-2-14-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-232-21-14-16-3-14-5-18-4-18-5-16-3-15-3-23-3-15-4-15-2-11-2-11-2-11-2-6-3-17-3-13-3-13-2-14-2-13-2-12-1 context. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION with 1 thread instances CFG has 9 procedures, 255 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 838537914253.0ns, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 9, EmptinessCheckTime: 124633534550.0ns, FeasibilityCheckTime: 711942556230.0ns, RefinementTime: 46505435.0ns, AutomataDifference: 0.0ns, DeadEndRemovalTime: 0.0ns, HoareAnnotationTime: 0.0ns, InitialAbstractionConstructionTime: 15079669.0ns, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6538 SdHoareTripleChecker+Valid, 12986135602.0ns IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6538 mSDsluCounter, 43851 SdHoareTripleChecker+Invalid, 11555620963.0ns Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41497 mSDsCounter, 429 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19878 IncrementalHoareTripleChecker+Invalid, 20307 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 429 mSolverCounterUnsat, 2354 mSDtfsCounter, 19878 mSolverCounterSat, 153427377.0ns SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: No data available, 0.0ns BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 334, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ns DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 362586788.0ns SsaConstructionTime, 2787689836.0ns SatisfiabilityAnalysisTime, 84482110629.0ns InterpolantComputationTime, 5154 NumberOfCodeBlocks, 5111 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 7395 ConstructedInterpolants, 128 QuantifiedInterpolants, 98788 SizeOfPredicates, 291 NumberOfNonLiveVariables, 6514 ConjunctsInSsa, 464 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 3426/7813 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown