/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 12:28:21,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 12:28:21,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 12:28:21,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 12:28:21,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 12:28:21,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 12:28:21,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 12:28:21,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 12:28:21,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 12:28:21,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 12:28:21,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 12:28:21,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 12:28:21,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 12:28:21,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 12:28:21,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 12:28:21,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 12:28:21,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 12:28:21,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 12:28:21,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 12:28:21,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 12:28:21,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 12:28:21,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 12:28:21,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 12:28:21,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 12:28:21,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 12:28:21,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 12:28:21,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 12:28:21,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 12:28:21,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 12:28:21,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 12:28:21,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 12:28:21,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 12:28:21,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 12:28:21,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 12:28:21,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 12:28:21,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 12:28:21,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 12:28:21,599 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 12:28:21,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 12:28:21,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 12:28:21,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 12:28:21,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 12:28:21,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 12:28:21,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 12:28:21,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 12:28:21,600 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 12:28:21,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 12:28:21,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 12:28:21,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 12:28:21,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 12:28:21,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 12:28:21,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:28:21,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 12:28:21,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 12:28:21,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 12:28:21,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 12:28:21,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 12:28:21,602 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 12:28:21,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 12:28:21,602 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 12:28:21,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 12:28:21,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 12:28:21,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 12:28:21,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 12:28:21,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 12:28:21,810 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 12:28:21,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c [2022-01-18 12:28:21,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4766f7d16/8d1f70763a0a43bbbfa53a6ef6ec7a8e/FLAG2d41054c7 [2022-01-18 12:28:22,144 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 12:28:22,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c [2022-01-18 12:28:22,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4766f7d16/8d1f70763a0a43bbbfa53a6ef6ec7a8e/FLAG2d41054c7 [2022-01-18 12:28:22,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4766f7d16/8d1f70763a0a43bbbfa53a6ef6ec7a8e [2022-01-18 12:28:22,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 12:28:22,580 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 12:28:22,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 12:28:22,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 12:28:22,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 12:28:22,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b43019d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22, skipping insertion in model container [2022-01-18 12:28:22,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 12:28:22,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 12:28:22,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-01-18 12:28:22,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:28:22,738 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 12:28:22,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-01-18 12:28:22,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:28:22,763 INFO L208 MainTranslator]: Completed translation [2022-01-18 12:28:22,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22 WrapperNode [2022-01-18 12:28:22,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 12:28:22,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 12:28:22,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 12:28:22,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 12:28:22,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,790 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 191 [2022-01-18 12:28:22,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 12:28:22,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 12:28:22,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 12:28:22,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 12:28:22,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 12:28:22,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 12:28:22,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 12:28:22,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 12:28:22,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (1/1) ... [2022-01-18 12:28:22,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:28:22,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:28:22,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 12:28:22,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 12:28:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 12:28:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 12:28:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 12:28:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 12:28:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 12:28:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 12:28:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 12:28:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 12:28:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 12:28:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 12:28:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 12:28:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 12:28:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 12:28:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 12:28:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 12:28:22,881 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 12:28:22,933 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 12:28:22,934 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 12:28:23,193 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 12:28:23,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 12:28:23,282 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-18 12:28:23,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:28:23 BoogieIcfgContainer [2022-01-18 12:28:23,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 12:28:23,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 12:28:23,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 12:28:23,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 12:28:23,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 12:28:22" (1/3) ... [2022-01-18 12:28:23,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a535285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:28:23, skipping insertion in model container [2022-01-18 12:28:23,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:28:22" (2/3) ... [2022-01-18 12:28:23,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a535285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:28:23, skipping insertion in model container [2022-01-18 12:28:23,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:28:23" (3/3) ... [2022-01-18 12:28:23,295 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2022-01-18 12:28:23,299 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 12:28:23,299 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 12:28:23,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 12:28:23,299 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 12:28:23,353 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,362 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,365 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,365 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,365 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,370 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:28:23,380 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 12:28:23,406 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 12:28:23,411 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 12:28:23,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 12:28:23,419 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 181 places, 189 transitions, 394 flow [2022-01-18 12:28:23,471 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 704 states, 703 states have (on average 2.52773826458037) internal successors, (1777), 703 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 704 states, 703 states have (on average 2.52773826458037) internal successors, (1777), 703 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-18 12:28:23,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:28:23,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:28:23,491 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:28:23,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:28:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash -7555604, now seen corresponding path program 1 times [2022-01-18 12:28:23,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:28:23,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532536311] [2022-01-18 12:28:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:28:23,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:28:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:28:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:28:23,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:28:23,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532536311] [2022-01-18 12:28:23,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532536311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:28:23,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:28:23,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 12:28:23,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339727141] [2022-01-18 12:28:23,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:28:23,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 12:28:23,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:28:23,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 12:28:23,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:28:23,748 INFO L87 Difference]: Start difference. First operand has 704 states, 703 states have (on average 2.52773826458037) internal successors, (1777), 703 states have internal predecessors, (1777), 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) Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:28:23,809 INFO L93 Difference]: Finished difference Result 704 states and 1672 transitions. [2022-01-18 12:28:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 12:28:23,811 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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) Word has length 132 [2022-01-18 12:28:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:28:23,832 INFO L225 Difference]: With dead ends: 704 [2022-01-18 12:28:23,832 INFO L226 Difference]: Without dead ends: 698 [2022-01-18 12:28:23,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:28:23,835 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:28:23,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:28:23,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-01-18 12:28:23,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2022-01-18 12:28:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 2.3902439024390243) internal successors, (1666), 697 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1666 transitions. [2022-01-18 12:28:23,900 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1666 transitions. Word has length 132 [2022-01-18 12:28:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:28:23,901 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 1666 transitions. [2022-01-18 12:28:23,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1666 transitions. [2022-01-18 12:28:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-18 12:28:23,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:28:23,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:28:23,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 12:28:23,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:28:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:28:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash 962025419, now seen corresponding path program 1 times [2022-01-18 12:28:23,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:28:23,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754425102] [2022-01-18 12:28:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:28:23,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:28:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:28:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:28:24,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:28:24,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754425102] [2022-01-18 12:28:24,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754425102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:28:24,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:28:24,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:28:24,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188010564] [2022-01-18 12:28:24,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:28:24,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:28:24,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:28:24,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:28:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:28:24,132 INFO L87 Difference]: Start difference. First operand 698 states and 1666 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:28:24,259 INFO L93 Difference]: Finished difference Result 1118 states and 2818 transitions. [2022-01-18 12:28:24,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:28:24,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) Word has length 132 [2022-01-18 12:28:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:28:24,266 INFO L225 Difference]: With dead ends: 1118 [2022-01-18 12:28:24,266 INFO L226 Difference]: Without dead ends: 1118 [2022-01-18 12:28:24,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 12:28:24,270 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 132 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:28:24,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 431 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:28:24,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-01-18 12:28:24,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 740. [2022-01-18 12:28:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 2.404600811907984) internal successors, (1777), 739 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1777 transitions. [2022-01-18 12:28:24,308 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1777 transitions. Word has length 132 [2022-01-18 12:28:24,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:28:24,309 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 1777 transitions. [2022-01-18 12:28:24,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1777 transitions. [2022-01-18 12:28:24,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 12:28:24,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:28:24,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:28:24,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 12:28:24,313 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:28:24,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:28:24,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1932159763, now seen corresponding path program 1 times [2022-01-18 12:28:24,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:28:24,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104195410] [2022-01-18 12:28:24,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:28:24,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:28:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:28:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:28:24,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:28:24,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104195410] [2022-01-18 12:28:24,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104195410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:28:24,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:28:24,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 12:28:24,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110794063] [2022-01-18 12:28:24,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:28:24,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 12:28:24,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:28:24,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 12:28:24,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:28:24,424 INFO L87 Difference]: Start difference. First operand 740 states and 1777 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:28:24,518 INFO L93 Difference]: Finished difference Result 1185 states and 2913 transitions. [2022-01-18 12:28:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 12:28:24,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) Word has length 137 [2022-01-18 12:28:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:28:24,523 INFO L225 Difference]: With dead ends: 1185 [2022-01-18 12:28:24,523 INFO L226 Difference]: Without dead ends: 1124 [2022-01-18 12:28:24,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-18 12:28:24,528 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 318 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:28:24,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 484 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:28:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-01-18 12:28:24,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 741. [2022-01-18 12:28:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 2.402702702702703) internal successors, (1778), 740 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1778 transitions. [2022-01-18 12:28:24,549 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1778 transitions. Word has length 137 [2022-01-18 12:28:24,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:28:24,550 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 1778 transitions. [2022-01-18 12:28:24,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1778 transitions. [2022-01-18 12:28:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-18 12:28:24,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:28:24,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:28:24,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 12:28:24,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:28:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:28:24,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1113696768, now seen corresponding path program 1 times [2022-01-18 12:28:24,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:28:24,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915114222] [2022-01-18 12:28:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:28:24,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:28:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:28:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:28:24,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:28:24,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915114222] [2022-01-18 12:28:24,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915114222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:28:24,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:28:24,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:28:24,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919933712] [2022-01-18 12:28:24,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:28:24,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:28:24,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:28:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:28:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:28:24,665 INFO L87 Difference]: Start difference. First operand 741 states and 1778 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:28:24,723 INFO L93 Difference]: Finished difference Result 1101 states and 2768 transitions. [2022-01-18 12:28:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:28:24,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) Word has length 144 [2022-01-18 12:28:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:28:24,727 INFO L225 Difference]: With dead ends: 1101 [2022-01-18 12:28:24,727 INFO L226 Difference]: Without dead ends: 918 [2022-01-18 12:28:24,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:28:24,728 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 19 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:28:24,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 483 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:28:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-01-18 12:28:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 800. [2022-01-18 12:28:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.430538172715895) internal successors, (1942), 799 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1942 transitions. [2022-01-18 12:28:24,746 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1942 transitions. Word has length 144 [2022-01-18 12:28:24,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:28:24,746 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 1942 transitions. [2022-01-18 12:28:24,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1942 transitions. [2022-01-18 12:28:24,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-18 12:28:24,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:28:24,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:28:24,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 12:28:24,749 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:28:24,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:28:24,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1975010592, now seen corresponding path program 1 times [2022-01-18 12:28:24,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:28:24,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626862344] [2022-01-18 12:28:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:28:24,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:28:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:28:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:28:24,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:28:24,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626862344] [2022-01-18 12:28:24,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626862344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:28:24,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:28:24,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:28:24,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459838684] [2022-01-18 12:28:24,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:28:24,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:28:24,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:28:24,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:28:24,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:28:24,839 INFO L87 Difference]: Start difference. First operand 800 states and 1942 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:28:24,881 INFO L93 Difference]: Finished difference Result 976 states and 2324 transitions. [2022-01-18 12:28:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:28:24,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 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) Word has length 149 [2022-01-18 12:28:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:28:24,884 INFO L225 Difference]: With dead ends: 976 [2022-01-18 12:28:24,884 INFO L226 Difference]: Without dead ends: 898 [2022-01-18 12:28:24,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:28:24,885 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 36 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:28:24,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 524 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:28:24,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2022-01-18 12:28:24,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 880. [2022-01-18 12:28:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 2.4175199089874857) internal successors, (2125), 879 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2125 transitions. [2022-01-18 12:28:24,904 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2125 transitions. Word has length 149 [2022-01-18 12:28:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:28:24,904 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 2125 transitions. [2022-01-18 12:28:24,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:24,904 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2125 transitions. [2022-01-18 12:28:24,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-18 12:28:24,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:28:24,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:28:24,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 12:28:24,906 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:28:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:28:24,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1498906467, now seen corresponding path program 1 times [2022-01-18 12:28:24,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:28:24,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659513596] [2022-01-18 12:28:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:28:24,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:28:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:28:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:28:24,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:28:24,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659513596] [2022-01-18 12:28:24,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659513596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:28:24,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:28:24,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:28:24,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481804864] [2022-01-18 12:28:24,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:28:24,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:28:24,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:28:24,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:28:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:28:24,995 INFO L87 Difference]: Start difference. First operand 880 states and 2125 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:25,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:28:25,079 INFO L93 Difference]: Finished difference Result 1065 states and 2473 transitions. [2022-01-18 12:28:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 12:28:25,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) Word has length 153 [2022-01-18 12:28:25,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:28:25,084 INFO L225 Difference]: With dead ends: 1065 [2022-01-18 12:28:25,084 INFO L226 Difference]: Without dead ends: 886 [2022-01-18 12:28:25,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 12:28:25,085 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 107 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:28:25,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 632 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:28:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-01-18 12:28:25,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 881. [2022-01-18 12:28:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 2.415909090909091) internal successors, (2126), 880 states have internal predecessors, (2126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2126 transitions. [2022-01-18 12:28:25,104 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2126 transitions. Word has length 153 [2022-01-18 12:28:25,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:28:25,105 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 2126 transitions. [2022-01-18 12:28:25,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:28:25,105 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2126 transitions. [2022-01-18 12:28:25,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 12:28:25,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:28:25,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:28:25,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 12:28:25,107 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:28:25,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:28:25,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1833342822, now seen corresponding path program 1 times [2022-01-18 12:28:25,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:28:25,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194574192] [2022-01-18 12:28:25,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:28:25,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:28:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:28:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:28:26,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:28:26,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194574192] [2022-01-18 12:28:26,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194574192] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:28:26,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616674866] [2022-01-18 12:28:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:28:26,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:28:26,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:28:26,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:28:26,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 12:28:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:28:27,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 12:28:27,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:28:27,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:28:27,392 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 12:28:27,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-01-18 12:28:28,650 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-01-18 12:28:28,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2022-01-18 12:28:28,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 15 [2022-01-18 12:28:28,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 7 [2022-01-18 12:28:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:28:28,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:28:29,662 INFO L353 Elim1Store]: treesize reduction 23, result has 58.2 percent of original size [2022-01-18 12:28:29,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 68 [2022-01-18 12:28:29,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 29 treesize of output 23 [2022-01-18 12:28:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:28:32,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616674866] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:28:32,255 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:28:32,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 26, 27] total 79 [2022-01-18 12:28:32,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086549878] [2022-01-18 12:28:32,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:28:32,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-18 12:28:32,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:28:32,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-18 12:28:32,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=5589, Unknown=3, NotChecked=0, Total=6162 [2022-01-18 12:28:32,258 INFO L87 Difference]: Start difference. First operand 881 states and 2126 transitions. Second operand has 79 states, 79 states have (on average 5.518987341772152) internal successors, (436), 79 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:29:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:29:01,136 INFO L93 Difference]: Finished difference Result 10937 states and 28877 transitions. [2022-01-18 12:29:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-01-18 12:29:01,136 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 5.518987341772152) internal successors, (436), 79 states have internal predecessors, (436), 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) Word has length 160 [2022-01-18 12:29:01,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:29:01,191 INFO L225 Difference]: With dead ends: 10937 [2022-01-18 12:29:01,191 INFO L226 Difference]: Without dead ends: 9815 [2022-01-18 12:29:01,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 316 SyntacticMatches, 56 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 37198 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=9078, Invalid=70080, Unknown=84, NotChecked=0, Total=79242 [2022-01-18 12:29:01,202 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 9147 mSDsluCounter, 12491 mSDsCounter, 0 mSdLazyCounter, 6096 mSolverCounterSat, 894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9147 SdHoareTripleChecker+Valid, 11390 SdHoareTripleChecker+Invalid, 11201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 6096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4211 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:29:01,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9147 Valid, 11390 Invalid, 11201 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [894 Valid, 6096 Invalid, 0 Unknown, 4211 Unchecked, 3.3s Time] [2022-01-18 12:29:01,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9815 states. [2022-01-18 12:29:01,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9815 to 1914. [2022-01-18 12:29:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 2.4662833246210143) internal successors, (4718), 1913 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:29:01,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 4718 transitions. [2022-01-18 12:29:01,276 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 4718 transitions. Word has length 160 [2022-01-18 12:29:01,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:29:01,276 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 4718 transitions. [2022-01-18 12:29:01,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 5.518987341772152) internal successors, (436), 79 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:29:01,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 4718 transitions. [2022-01-18 12:29:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 12:29:01,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:29:01,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:29:01,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 12:29:01,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:29:01,495 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:29:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:29:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2000453552, now seen corresponding path program 2 times [2022-01-18 12:29:01,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:29:01,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553274756] [2022-01-18 12:29:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:29:01,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:29:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:29:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:29:02,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:29:02,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553274756] [2022-01-18 12:29:02,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553274756] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:29:02,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659669976] [2022-01-18 12:29:02,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:29:02,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:29:02,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:29:02,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:29:02,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 12:29:02,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:29:02,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:29:02,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-18 12:29:02,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:29:02,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:29:03,318 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 12:29:03,318 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 12:29:03,903 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 12:29:03,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-01-18 12:29:04,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:29:04,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-18 12:29:04,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-18 12:29:05,184 INFO L353 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2022-01-18 12:29:05,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 13 [2022-01-18 12:29:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:29:05,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:29:06,359 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:29:06,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 938 treesize of output 894 [2022-01-18 12:29:06,389 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:29:06,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 794 treesize of output 740 [2022-01-18 12:29:06,416 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:29:06,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 692 treesize of output 536 [2022-01-18 12:29:17,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-01-18 12:29:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:29:17,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659669976] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:29:17,891 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:29:17,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 28, 28] total 77 [2022-01-18 12:29:17,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227865518] [2022-01-18 12:29:17,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:29:17,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-18 12:29:17,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:29:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-18 12:29:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=5278, Unknown=13, NotChecked=0, Total=5852 [2022-01-18 12:29:17,893 INFO L87 Difference]: Start difference. First operand 1914 states and 4718 transitions. Second operand has 77 states, 77 states have (on average 5.675324675324675) internal successors, (437), 77 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:29:33,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:29:33,265 INFO L93 Difference]: Finished difference Result 8574 states and 22484 transitions. [2022-01-18 12:29:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-18 12:29:33,265 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 5.675324675324675) internal successors, (437), 77 states have internal predecessors, (437), 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) Word has length 160 [2022-01-18 12:29:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:29:33,291 INFO L225 Difference]: With dead ends: 8574 [2022-01-18 12:29:33,291 INFO L226 Difference]: Without dead ends: 8421 [2022-01-18 12:29:33,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 299 SyntacticMatches, 27 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14044 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=4689, Invalid=33842, Unknown=81, NotChecked=0, Total=38612 [2022-01-18 12:29:33,294 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 4778 mSDsluCounter, 9688 mSDsCounter, 0 mSdLazyCounter, 3752 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4778 SdHoareTripleChecker+Valid, 9019 SdHoareTripleChecker+Invalid, 8268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 3752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4197 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:29:33,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4778 Valid, 9019 Invalid, 8268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 3752 Invalid, 0 Unknown, 4197 Unchecked, 1.8s Time] [2022-01-18 12:29:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8421 states. [2022-01-18 12:29:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8421 to 2939. [2022-01-18 12:29:33,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2938 states have (on average 2.5500340367597003) internal successors, (7492), 2938 states have internal predecessors, (7492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:29:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 7492 transitions. [2022-01-18 12:29:33,373 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 7492 transitions. Word has length 160 [2022-01-18 12:29:33,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:29:33,374 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 7492 transitions. [2022-01-18 12:29:33,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.675324675324675) internal successors, (437), 77 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:29:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 7492 transitions. [2022-01-18 12:29:33,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 12:29:33,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:29:33,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:29:33,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 12:29:33,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-01-18 12:29:33,596 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:29:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:29:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash 790906228, now seen corresponding path program 3 times [2022-01-18 12:29:33,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:29:33,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593381419] [2022-01-18 12:29:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:29:33,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:29:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:29:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:29:33,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:29:33,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593381419] [2022-01-18 12:29:33,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593381419] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:29:33,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449912112] [2022-01-18 12:29:33,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:29:33,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:29:33,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:29:33,645 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) [2022-01-18 12:29:33,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 12:29:33,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:29:33,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:29:33,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:29:33,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:29:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:29:33,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:29:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:29:34,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449912112] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:29:34,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:29:34,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-01-18 12:29:34,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567152652] [2022-01-18 12:29:34,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:29:34,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 12:29:34,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:29:34,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 12:29:34,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-18 12:29:34,119 INFO L87 Difference]: Start difference. First operand 2939 states and 7492 transitions. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:29:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:29:34,203 INFO L93 Difference]: Finished difference Result 4035 states and 10526 transitions. [2022-01-18 12:29:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 12:29:34,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 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) Word has length 160 [2022-01-18 12:29:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:29:34,219 INFO L225 Difference]: With dead ends: 4035 [2022-01-18 12:29:34,219 INFO L226 Difference]: Without dead ends: 4035 [2022-01-18 12:29:34,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 312 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 12:29:34,219 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 136 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:29:34,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1003 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:29:34,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2022-01-18 12:29:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 2907. [2022-01-18 12:29:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2906 states have (on average 2.5478320715760496) internal successors, (7404), 2906 states have internal predecessors, (7404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:29:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 7404 transitions. [2022-01-18 12:29:34,268 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 7404 transitions. Word has length 160 [2022-01-18 12:29:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:29:34,268 INFO L470 AbstractCegarLoop]: Abstraction has 2907 states and 7404 transitions. [2022-01-18 12:29:34,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:29:34,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 7404 transitions. [2022-01-18 12:29:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 12:29:34,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:29:34,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:29:34,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 12:29:34,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:29:34,484 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:29:34,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:29:34,484 INFO L85 PathProgramCache]: Analyzing trace with hash 228136074, now seen corresponding path program 4 times [2022-01-18 12:29:34,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:29:34,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183549310] [2022-01-18 12:29:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:29:34,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:29:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:29:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:29:35,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:29:35,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183549310] [2022-01-18 12:29:35,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183549310] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:29:35,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127926845] [2022-01-18 12:29:35,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:29:35,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:29:35,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:29:35,451 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) [2022-01-18 12:29:35,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 12:29:35,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:29:35,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:29:35,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 12:29:35,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:29:35,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:29:36,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 12:29:36,730 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 12:29:36,731 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-01-18 12:29:36,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:29:37,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:29:38,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:29:38,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:29:38,330 INFO L353 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-01-18 12:29:38,330 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 10 [2022-01-18 12:29:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:29:38,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:29:46,334 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:29:46,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 92 [2022-01-18 12:29:46,365 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:29:46,366 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4204 treesize of output 3906 [2022-01-18 12:29:46,400 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:29:46,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3852 treesize of output 3372 [2022-01-18 12:29:46,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:29:46,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3324 treesize of output 3108 [2022-01-18 12:29:46,471 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:29:46,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3060 treesize of output 2244 [2022-01-18 12:30:07,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-01-18 12:30:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:30:08,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127926845] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:30:08,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:30:08,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 35, 34] total 90 [2022-01-18 12:30:08,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654916748] [2022-01-18 12:30:08,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:30:08,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-18 12:30:08,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:30:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-18 12:30:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=830, Invalid=7102, Unknown=78, NotChecked=0, Total=8010 [2022-01-18 12:30:08,282 INFO L87 Difference]: Start difference. First operand 2907 states and 7404 transitions. Second operand has 90 states, 90 states have (on average 4.7) internal successors, (423), 90 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:30:16,217 INFO L93 Difference]: Finished difference Result 6127 states and 16012 transitions. [2022-01-18 12:30:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 12:30:16,218 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 4.7) internal successors, (423), 90 states have internal predecessors, (423), 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) Word has length 160 [2022-01-18 12:30:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:30:16,229 INFO L225 Difference]: With dead ends: 6127 [2022-01-18 12:30:16,229 INFO L226 Difference]: Without dead ends: 5632 [2022-01-18 12:30:16,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 274 SyntacticMatches, 7 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7587 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2974, Invalid=21268, Unknown=250, NotChecked=0, Total=24492 [2022-01-18 12:30:16,231 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 2515 mSDsluCounter, 10130 mSDsCounter, 0 mSdLazyCounter, 3158 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2515 SdHoareTripleChecker+Valid, 9478 SdHoareTripleChecker+Invalid, 5770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 3158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2460 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:30:16,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2515 Valid, 9478 Invalid, 5770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 3158 Invalid, 0 Unknown, 2460 Unchecked, 1.4s Time] [2022-01-18 12:30:16,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2022-01-18 12:30:16,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 3022. [2022-01-18 12:30:16,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 3021 states have (on average 2.5435286329030125) internal successors, (7684), 3021 states have internal predecessors, (7684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 7684 transitions. [2022-01-18 12:30:16,304 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 7684 transitions. Word has length 160 [2022-01-18 12:30:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:30:16,304 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 7684 transitions. [2022-01-18 12:30:16,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 4.7) internal successors, (423), 90 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:16,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 7684 transitions. [2022-01-18 12:30:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 12:30:16,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:30:16,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:30:16,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 12:30:16,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:30:16,523 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:30:16,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:30:16,524 INFO L85 PathProgramCache]: Analyzing trace with hash 399907180, now seen corresponding path program 5 times [2022-01-18 12:30:16,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:30:16,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485598233] [2022-01-18 12:30:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:30:16,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:30:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:30:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:30:18,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:30:18,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485598233] [2022-01-18 12:30:18,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485598233] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:30:18,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781332969] [2022-01-18 12:30:18,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:30:18,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:30:18,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:30:18,047 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) [2022-01-18 12:30:18,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 12:30:18,131 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:30:18,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:30:18,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 74 conjunts are in the unsatisfiable core [2022-01-18 12:30:18,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:30:19,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-18 12:30:19,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:30:19,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-18 12:30:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:30:20,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-18 12:30:20,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:30:20,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:30:20,658 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-01-18 12:30:20,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 13 [2022-01-18 12:30:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:30:20,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:30:25,632 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:30:25,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 79 [2022-01-18 12:30:25,647 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:30:25,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 979 treesize of output 951 [2022-01-18 12:30:25,682 INFO L353 Elim1Store]: treesize reduction 44, result has 54.6 percent of original size [2022-01-18 12:30:25,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1315 treesize of output 1304 [2022-01-18 12:30:25,715 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:30:25,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1316 treesize of output 1124 [2022-01-18 12:30:25,740 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:30:25,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1076 treesize of output 1004 [2022-01-18 12:30:34,227 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:30:34,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 233 treesize of output 226 [2022-01-18 12:30:34,413 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:30:34,413 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 97 [2022-01-18 12:30:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:30:36,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781332969] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:30:36,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:30:36,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 29] total 90 [2022-01-18 12:30:36,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202816238] [2022-01-18 12:30:36,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:30:36,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-18 12:30:36,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:30:36,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-18 12:30:36,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=7307, Unknown=62, NotChecked=0, Total=8010 [2022-01-18 12:30:36,418 INFO L87 Difference]: Start difference. First operand 3022 states and 7684 transitions. Second operand has 90 states, 90 states have (on average 4.844444444444444) internal successors, (436), 90 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:30:50,175 INFO L93 Difference]: Finished difference Result 5074 states and 12946 transitions. [2022-01-18 12:30:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 12:30:50,175 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 4.844444444444444) internal successors, (436), 90 states have internal predecessors, (436), 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) Word has length 160 [2022-01-18 12:30:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:30:50,183 INFO L225 Difference]: With dead ends: 5074 [2022-01-18 12:30:50,183 INFO L226 Difference]: Without dead ends: 4732 [2022-01-18 12:30:50,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 275 SyntacticMatches, 10 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10921 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=4683, Invalid=31165, Unknown=62, NotChecked=0, Total=35910 [2022-01-18 12:30:50,185 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 4406 mSDsluCounter, 8217 mSDsCounter, 0 mSdLazyCounter, 4008 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 7788 SdHoareTripleChecker+Invalid, 6386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 4008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1994 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:30:50,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4406 Valid, 7788 Invalid, 6386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 4008 Invalid, 0 Unknown, 1994 Unchecked, 1.9s Time] [2022-01-18 12:30:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2022-01-18 12:30:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 3022. [2022-01-18 12:30:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 3021 states have (on average 2.5435286329030125) internal successors, (7684), 3021 states have internal predecessors, (7684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 7684 transitions. [2022-01-18 12:30:50,237 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 7684 transitions. Word has length 160 [2022-01-18 12:30:50,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:30:50,238 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 7684 transitions. [2022-01-18 12:30:50,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 4.844444444444444) internal successors, (436), 90 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 7684 transitions. [2022-01-18 12:30:50,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-18 12:30:50,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:30:50,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:30:50,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 12:30:50,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-18 12:30:50,459 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:30:50,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:30:50,460 INFO L85 PathProgramCache]: Analyzing trace with hash -400624774, now seen corresponding path program 6 times [2022-01-18 12:30:50,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:30:50,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983534772] [2022-01-18 12:30:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:30:50,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:30:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:30:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:30:50,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:30:50,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983534772] [2022-01-18 12:30:50,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983534772] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:30:50,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319350948] [2022-01-18 12:30:50,543 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:30:50,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:30:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:30:50,544 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) [2022-01-18 12:30:50,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 12:30:50,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:30:50,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:30:50,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 12:30:50,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:30:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:30:50,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:30:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:30:51,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319350948] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:30:51,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:30:51,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2022-01-18 12:30:51,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586935129] [2022-01-18 12:30:51,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:30:51,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:30:51,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:30:51,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:30:51,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:30:51,206 INFO L87 Difference]: Start difference. First operand 3022 states and 7684 transitions. Second operand has 20 states, 20 states have (on average 15.7) internal successors, (314), 20 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:51,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:30:51,548 INFO L93 Difference]: Finished difference Result 7409 states and 19270 transitions. [2022-01-18 12:30:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 12:30:51,549 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 15.7) internal successors, (314), 20 states have internal predecessors, (314), 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) Word has length 165 [2022-01-18 12:30:51,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:30:51,559 INFO L225 Difference]: With dead ends: 7409 [2022-01-18 12:30:51,560 INFO L226 Difference]: Without dead ends: 5709 [2022-01-18 12:30:51,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:30:51,560 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 1825 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:30:51,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 1745 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:30:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5709 states. [2022-01-18 12:30:51,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5709 to 4282. [2022-01-18 12:30:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 4281 states have (on average 2.4982480728801684) internal successors, (10695), 4281 states have internal predecessors, (10695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 10695 transitions. [2022-01-18 12:30:51,648 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 10695 transitions. Word has length 165 [2022-01-18 12:30:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:30:51,649 INFO L470 AbstractCegarLoop]: Abstraction has 4282 states and 10695 transitions. [2022-01-18 12:30:51,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 15.7) internal successors, (314), 20 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:51,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 10695 transitions. [2022-01-18 12:30:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-18 12:30:51,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:30:51,655 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:30:51,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 12:30:51,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:30:51,871 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:30:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:30:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1907307964, now seen corresponding path program 1 times [2022-01-18 12:30:51,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:30:51,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989582894] [2022-01-18 12:30:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:30:51,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:30:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:30:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:30:51,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:30:51,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989582894] [2022-01-18 12:30:51,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989582894] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:30:51,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177618811] [2022-01-18 12:30:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:30:51,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:30:51,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:30:51,956 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) [2022-01-18 12:30:51,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 12:30:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:30:52,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:30:52,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:30:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:30:52,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:30:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:30:52,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177618811] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:30:52,676 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:30:52,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 12:30:52,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344017500] [2022-01-18 12:30:52,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:30:52,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:30:52,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:30:52,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:30:52,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:30:52,677 INFO L87 Difference]: Start difference. First operand 4282 states and 10695 transitions. Second operand has 24 states, 24 states have (on average 14.708333333333334) internal successors, (353), 24 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:30:52,932 INFO L93 Difference]: Finished difference Result 5708 states and 13963 transitions. [2022-01-18 12:30:52,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 12:30:52,932 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.708333333333334) internal successors, (353), 24 states have internal predecessors, (353), 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) Word has length 165 [2022-01-18 12:30:52,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:30:52,939 INFO L225 Difference]: With dead ends: 5708 [2022-01-18 12:30:52,939 INFO L226 Difference]: Without dead ends: 5066 [2022-01-18 12:30:52,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=321, Invalid=939, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:30:52,939 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1292 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:30:52,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 1045 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:30:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5066 states. [2022-01-18 12:30:52,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5066 to 4537. [2022-01-18 12:30:52,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 4536 states have (on average 2.486552028218695) internal successors, (11279), 4536 states have internal predecessors, (11279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 11279 transitions. [2022-01-18 12:30:53,004 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 11279 transitions. Word has length 165 [2022-01-18 12:30:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:30:53,004 INFO L470 AbstractCegarLoop]: Abstraction has 4537 states and 11279 transitions. [2022-01-18 12:30:53,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.708333333333334) internal successors, (353), 24 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:30:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 11279 transitions. [2022-01-18 12:30:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-18 12:30:53,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:30:53,012 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:30:53,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 12:30:53,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:30:53,227 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:30:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:30:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash -589330423, now seen corresponding path program 7 times [2022-01-18 12:30:53,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:30:53,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378998240] [2022-01-18 12:30:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:30:53,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:30:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:30:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:30:55,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:30:55,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378998240] [2022-01-18 12:30:55,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378998240] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:30:55,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754940225] [2022-01-18 12:30:55,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:30:55,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:30:55,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:30:55,234 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) [2022-01-18 12:30:55,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 12:30:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:30:55,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 12:30:55,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:30:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:30:56,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:30:56,829 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-01-18 12:30:56,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 10 [2022-01-18 12:30:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:30:56,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:30:57,476 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:30:57,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 157 [2022-01-18 12:30:57,492 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:30:57,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 118 [2022-01-18 12:30:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:30:59,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754940225] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:30:59,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:30:59,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 30, 30] total 90 [2022-01-18 12:30:59,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768224305] [2022-01-18 12:30:59,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:30:59,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-18 12:30:59,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:30:59,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-18 12:30:59,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=919, Invalid=7090, Unknown=1, NotChecked=0, Total=8010 [2022-01-18 12:30:59,498 INFO L87 Difference]: Start difference. First operand 4537 states and 11279 transitions. Second operand has 90 states, 90 states have (on average 5.0777777777777775) internal successors, (457), 90 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:31:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:31:07,663 INFO L93 Difference]: Finished difference Result 13260 states and 34754 transitions. [2022-01-18 12:31:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 12:31:07,663 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 5.0777777777777775) internal successors, (457), 90 states have internal predecessors, (457), 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) Word has length 167 [2022-01-18 12:31:07,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:31:07,679 INFO L225 Difference]: With dead ends: 13260 [2022-01-18 12:31:07,679 INFO L226 Difference]: Without dead ends: 10389 [2022-01-18 12:31:07,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11654 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=4436, Invalid=30340, Unknown=6, NotChecked=0, Total=34782 [2022-01-18 12:31:07,681 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 4147 mSDsluCounter, 6028 mSDsCounter, 0 mSdLazyCounter, 3228 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4147 SdHoareTripleChecker+Valid, 5766 SdHoareTripleChecker+Invalid, 4430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 3228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 908 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:31:07,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4147 Valid, 5766 Invalid, 4430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 3228 Invalid, 0 Unknown, 908 Unchecked, 1.4s Time] [2022-01-18 12:31:07,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10389 states. [2022-01-18 12:31:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10389 to 3699. [2022-01-18 12:31:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3699 states, 3698 states have (on average 2.493510005408329) internal successors, (9221), 3698 states have internal predecessors, (9221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:31:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 9221 transitions. [2022-01-18 12:31:07,793 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 9221 transitions. Word has length 167 [2022-01-18 12:31:07,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:31:07,793 INFO L470 AbstractCegarLoop]: Abstraction has 3699 states and 9221 transitions. [2022-01-18 12:31:07,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 5.0777777777777775) internal successors, (457), 90 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:31:07,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 9221 transitions. [2022-01-18 12:31:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-18 12:31:07,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:31:07,799 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:31:07,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 12:31:08,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 12:31:08,015 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:31:08,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:31:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1950097392, now seen corresponding path program 8 times [2022-01-18 12:31:08,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:31:08,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66020523] [2022-01-18 12:31:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:31:08,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:31:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:31:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:31:09,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:31:09,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66020523] [2022-01-18 12:31:09,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66020523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:31:09,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804221249] [2022-01-18 12:31:09,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:31:09,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:31:09,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:31:09,258 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) [2022-01-18 12:31:09,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 12:31:09,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:31:09,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:31:09,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 91 conjunts are in the unsatisfiable core [2022-01-18 12:31:09,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:31:09,411 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:31:09,441 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 12:31:09,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-01-18 12:31:09,911 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-01-18 12:31:09,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-01-18 12:31:10,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 12:31:11,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:31:11,661 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-18 12:31:11,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 21 [2022-01-18 12:31:11,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:31:12,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:31:12,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-18 12:31:12,801 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-18 12:31:13,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2022-01-18 12:31:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:31:13,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:31:17,975 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:31:17,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 80 [2022-01-18 12:31:17,985 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:31:17,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 2008 treesize of output 1944 [2022-01-18 12:31:18,006 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:31:18,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1928 treesize of output 1544 [2022-01-18 12:31:18,054 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:31:18,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1496 treesize of output 1392 [2022-01-18 12:31:18,084 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:31:18,084 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1308 treesize of output 1140 [2022-01-18 12:31:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:31:30,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804221249] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:31:30,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:31:30,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 40] total 100 [2022-01-18 12:31:30,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682419411] [2022-01-18 12:31:30,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:31:30,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-18 12:31:30,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:31:30,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-18 12:31:30,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=977, Invalid=8847, Unknown=76, NotChecked=0, Total=9900 [2022-01-18 12:31:30,805 INFO L87 Difference]: Start difference. First operand 3699 states and 9221 transitions. Second operand has 100 states, 100 states have (on average 4.7) internal successors, (470), 100 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:31:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:31:47,068 INFO L93 Difference]: Finished difference Result 7287 states and 18459 transitions. [2022-01-18 12:31:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-18 12:31:47,068 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 4.7) internal successors, (470), 100 states have internal predecessors, (470), 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) Word has length 174 [2022-01-18 12:31:47,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:31:47,079 INFO L225 Difference]: With dead ends: 7287 [2022-01-18 12:31:47,079 INFO L226 Difference]: Without dead ends: 7261 [2022-01-18 12:31:47,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 291 SyntacticMatches, 6 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10884 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=4886, Invalid=27925, Unknown=131, NotChecked=0, Total=32942 [2022-01-18 12:31:47,081 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 2973 mSDsluCounter, 8338 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 8037 SdHoareTripleChecker+Invalid, 5285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2963 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:31:47,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2973 Valid, 8037 Invalid, 5285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2217 Invalid, 0 Unknown, 2963 Unchecked, 2.2s Time] [2022-01-18 12:31:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2022-01-18 12:31:47,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 4268. [2022-01-18 12:31:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4268 states, 4267 states have (on average 2.4642606046402626) internal successors, (10515), 4267 states have internal predecessors, (10515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:31:47,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 10515 transitions. [2022-01-18 12:31:47,151 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 10515 transitions. Word has length 174 [2022-01-18 12:31:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:31:47,152 INFO L470 AbstractCegarLoop]: Abstraction has 4268 states and 10515 transitions. [2022-01-18 12:31:47,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 4.7) internal successors, (470), 100 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:31:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 10515 transitions. [2022-01-18 12:31:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-18 12:31:47,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:31:47,158 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:31:47,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 12:31:47,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 12:31:47,375 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:31:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:31:47,375 INFO L85 PathProgramCache]: Analyzing trace with hash 9903012, now seen corresponding path program 9 times [2022-01-18 12:31:47,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:31:47,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183457566] [2022-01-18 12:31:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:31:47,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:31:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:31:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:31:50,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:31:50,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183457566] [2022-01-18 12:31:50,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183457566] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:31:50,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971836896] [2022-01-18 12:31:50,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:31:50,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:31:50,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:31:50,873 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) [2022-01-18 12:31:50,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 12:31:50,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:31:50,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:31:50,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-18 12:31:50,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:31:53,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:31:53,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 12:31:53,927 INFO L353 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-01-18 12:31:53,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 10 [2022-01-18 12:31:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-18 12:31:54,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:31:55,384 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:31:55,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 157 [2022-01-18 12:31:55,425 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:31:55,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 118 [2022-01-18 12:31:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-18 12:31:58,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971836896] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:31:58,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:31:58,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 20, 21] total 64 [2022-01-18 12:31:58,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464163037] [2022-01-18 12:31:58,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:31:58,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 12:31:58,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:31:58,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 12:31:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=3575, Unknown=5, NotChecked=0, Total=4032 [2022-01-18 12:31:58,887 INFO L87 Difference]: Start difference. First operand 4268 states and 10515 transitions. Second operand has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:32:11,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:32:11,885 INFO L93 Difference]: Finished difference Result 11049 states and 28935 transitions. [2022-01-18 12:32:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 12:32:11,886 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 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) Word has length 174 [2022-01-18 12:32:11,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:32:11,902 INFO L225 Difference]: With dead ends: 11049 [2022-01-18 12:32:11,902 INFO L226 Difference]: Without dead ends: 9712 [2022-01-18 12:32:11,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 326 SyntacticMatches, 3 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5261 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=2649, Invalid=15978, Unknown=5, NotChecked=0, Total=18632 [2022-01-18 12:32:11,904 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 2414 mSDsluCounter, 5328 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 5049 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 828 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:32:11,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2414 Valid, 5049 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2130 Invalid, 0 Unknown, 828 Unchecked, 2.9s Time] [2022-01-18 12:32:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2022-01-18 12:32:11,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 3243. [2022-01-18 12:32:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3242 states have (on average 2.540715607649599) internal successors, (8237), 3242 states have internal predecessors, (8237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:32:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 8237 transitions. [2022-01-18 12:32:11,992 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 8237 transitions. Word has length 174 [2022-01-18 12:32:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:32:11,992 INFO L470 AbstractCegarLoop]: Abstraction has 3243 states and 8237 transitions. [2022-01-18 12:32:11,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:32:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 8237 transitions. [2022-01-18 12:32:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-18 12:32:11,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:32:11,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:32:12,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 12:32:12,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 12:32:12,214 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:32:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:32:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1088583688, now seen corresponding path program 2 times [2022-01-18 12:32:12,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:32:12,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078542824] [2022-01-18 12:32:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:32:12,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:32:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:32:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-18 12:32:12,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:32:12,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078542824] [2022-01-18 12:32:12,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078542824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:32:12,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:32:12,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 12:32:12,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777157852] [2022-01-18 12:32:12,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:32:12,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 12:32:12,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:32:12,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 12:32:12,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-18 12:32:12,826 INFO L87 Difference]: Start difference. First operand 3243 states and 8237 transitions. Second operand has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:32:13,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:32:13,737 INFO L93 Difference]: Finished difference Result 3239 states and 8259 transitions. [2022-01-18 12:32:13,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 12:32:13,738 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 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) Word has length 179 [2022-01-18 12:32:13,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:32:13,742 INFO L225 Difference]: With dead ends: 3239 [2022-01-18 12:32:13,743 INFO L226 Difference]: Without dead ends: 3239 [2022-01-18 12:32:13,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-01-18 12:32:13,743 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 343 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:32:13,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1005 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:32:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2022-01-18 12:32:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 2973. [2022-01-18 12:32:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2973 states, 2972 states have (on average 2.5565275908479137) internal successors, (7598), 2972 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:32:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 7598 transitions. [2022-01-18 12:32:13,779 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 7598 transitions. Word has length 179 [2022-01-18 12:32:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:32:13,780 INFO L470 AbstractCegarLoop]: Abstraction has 2973 states and 7598 transitions. [2022-01-18 12:32:13,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:32:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 7598 transitions. [2022-01-18 12:32:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-18 12:32:13,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:32:13,784 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:32:13,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 12:32:13,784 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:32:13,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:32:13,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1272571933, now seen corresponding path program 10 times [2022-01-18 12:32:13,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:32:13,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799212196] [2022-01-18 12:32:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:32:13,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:32:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:32:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:32:14,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:32:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799212196] [2022-01-18 12:32:14,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799212196] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:32:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819256233] [2022-01-18 12:32:14,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:32:14,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:32:14,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:32:14,082 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:32:14,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 12:32:14,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:32:14,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:32:14,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:32:14,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:32:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 12:32:14,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:32:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 12:32:15,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819256233] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:32:15,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:32:15,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2022-01-18 12:32:15,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556758520] [2022-01-18 12:32:15,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:32:15,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 12:32:15,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:32:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 12:32:15,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2022-01-18 12:32:15,754 INFO L87 Difference]: Start difference. First operand 2973 states and 7598 transitions. Second operand has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:32:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:32:18,404 INFO L93 Difference]: Finished difference Result 4109 states and 10313 transitions. [2022-01-18 12:32:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 12:32:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 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) Word has length 185 [2022-01-18 12:32:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:32:18,409 INFO L225 Difference]: With dead ends: 4109 [2022-01-18 12:32:18,409 INFO L226 Difference]: Without dead ends: 3395 [2022-01-18 12:32:18,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=881, Invalid=4231, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 12:32:18,410 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1841 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:32:18,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1841 Valid, 2451 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 12:32:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2022-01-18 12:32:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3144. [2022-01-18 12:32:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 3143 states have (on average 2.605154311167674) internal successors, (8188), 3143 states have internal predecessors, (8188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:32:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 8188 transitions. [2022-01-18 12:32:18,446 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 8188 transitions. Word has length 185 [2022-01-18 12:32:18,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:32:18,446 INFO L470 AbstractCegarLoop]: Abstraction has 3144 states and 8188 transitions. [2022-01-18 12:32:18,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:32:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 8188 transitions. [2022-01-18 12:32:18,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-18 12:32:18,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:32:18,451 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:32:18,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 12:32:18,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 12:32:18,655 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:32:18,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:32:18,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1641267285, now seen corresponding path program 11 times [2022-01-18 12:32:18,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:32:18,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144322399] [2022-01-18 12:32:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:32:18,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:32:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:32:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:32:24,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:32:24,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144322399] [2022-01-18 12:32:24,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144322399] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:32:24,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226419891] [2022-01-18 12:32:24,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:32:24,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:32:24,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:32:24,153 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:32:24,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 12:32:24,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:32:24,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:32:24,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-18 12:32:24,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:32:24,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:32:25,126 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 12:32:25,126 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-01-18 12:32:31,141 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-01-18 12:32:31,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 74 [2022-01-18 12:32:31,173 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:32:31,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 59 treesize of output 45 [2022-01-18 12:32:32,756 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 12:32:32,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 13 [2022-01-18 12:32:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:32:33,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:32:34,536 WARN L838 $PredicateComparison]: unable to prove that (or (< c_~start~0 0) (and (forall ((v_ArrVal_542 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_542 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base)) (.cse1 (* c_~start~0 4))) (<= (select .cse0 (+ .cse1 c_~queue~0.offset)) (select .cse0 (+ .cse1 c_~queue~0.offset 4)))))) (<= c_~n~0 c_~start~0)) is different from false [2022-01-18 12:32:37,530 INFO L353 Elim1Store]: treesize reduction 89, result has 67.0 percent of original size [2022-01-18 12:32:37,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 154 treesize of output 253 [2022-01-18 12:32:37,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 58 treesize of output 52 [2022-01-18 12:32:37,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:32:37,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 39 [2022-01-18 12:32:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 6 not checked. [2022-01-18 12:32:51,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226419891] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:32:51,889 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:32:51,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 36, 37] total 107 [2022-01-18 12:32:51,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794551294] [2022-01-18 12:32:51,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:32:51,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-18 12:32:51,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:32:51,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-18 12:32:51,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=10303, Unknown=4, NotChecked=208, Total=11342 [2022-01-18 12:32:51,892 INFO L87 Difference]: Start difference. First operand 3144 states and 8188 transitions. Second operand has 107 states, 107 states have (on average 4.607476635514018) internal successors, (493), 107 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:33:31,908 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< c_~start~0 0)) (.cse1 (and (forall ((v_ArrVal_542 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_542 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base)) (.cse6 (* c_~start~0 4))) (<= (select .cse5 (+ .cse6 c_~queue~0.offset)) (select .cse5 (+ .cse6 c_~queue~0.offset 4))))))) (.cse4 (<= c_~n~0 c_~start~0))) (and (or (not (< c_~end~0 c_~n~0)) .cse0 .cse1 (not (<= 0 c_~end~0)) (forall ((v_~i~0_50 Int)) (let ((.cse3 (select |c_#memory_int| c_~A~0.base))) (let ((.cse2 (select .cse3 (+ (* v_~i~0_50 4) c_~A~0.offset)))) (or (< .cse2 (select .cse3 (+ c_~A~0.offset (* c_~i~0 4)))) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse2)))))) .cse4) (or .cse0 .cse1 .cse4))) is different from false [2022-01-18 12:33:31,989 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< c_~start~0 0)) (.cse1 (and (forall ((v_ArrVal_542 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_542 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base)) (.cse5 (* c_~start~0 4))) (<= (select .cse4 (+ .cse5 c_~queue~0.offset)) (select .cse4 (+ .cse5 c_~queue~0.offset 4))))))) (.cse2 (<= c_~n~0 c_~start~0))) (and (or .cse0 .cse1 .cse2) (or (not (< c_~end~0 c_~n~0)) (forall ((~i~0 Int)) (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* ~i~0 4))))) (or (< .cse3 |c_thread1Thread1of1ForFork0_#t~mem5#1|) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse3))))) .cse0 .cse1 (not (<= 0 c_~end~0)) .cse2))) is different from false [2022-01-18 12:33:32,005 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< c_~start~0 0)) (.cse1 (and (forall ((v_ArrVal_542 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_542 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base)) (.cse5 (* c_~start~0 4))) (<= (select .cse4 (+ .cse5 c_~queue~0.offset)) (select .cse4 (+ .cse5 c_~queue~0.offset 4))))))) (.cse2 (<= c_~n~0 c_~start~0))) (and (or .cse0 .cse1 .cse2) (or (not (< c_~end~0 c_~n~0)) .cse0 .cse1 (not (<= 0 c_~end~0)) (forall ((~i~0 Int)) (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* ~i~0 4))))) (or (< .cse3 c_~last~0) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse3))))) .cse2))) is different from false [2022-01-18 12:33:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:33:33,004 INFO L93 Difference]: Finished difference Result 8303 states and 21603 transitions. [2022-01-18 12:33:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-18 12:33:33,005 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 4.607476635514018) internal successors, (493), 107 states have internal predecessors, (493), 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) Word has length 188 [2022-01-18 12:33:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:33:33,016 INFO L225 Difference]: With dead ends: 8303 [2022-01-18 12:33:33,016 INFO L226 Difference]: Without dead ends: 8294 [2022-01-18 12:33:33,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 335 SyntacticMatches, 32 SemanticMatches, 199 ConstructedPredicates, 4 IntricatePredicates, 4 DeprecatedPredicates, 12869 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=4134, Invalid=34472, Unknown=22, NotChecked=1572, Total=40200 [2022-01-18 12:33:33,019 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 5308 mSDsluCounter, 10757 mSDsCounter, 0 mSdLazyCounter, 3232 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 10518 SdHoareTripleChecker+Invalid, 6553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 3232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2992 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:33:33,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 10518 Invalid, 6553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 3232 Invalid, 0 Unknown, 2992 Unchecked, 4.9s Time] [2022-01-18 12:33:33,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8294 states. [2022-01-18 12:33:33,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8294 to 4526. [2022-01-18 12:33:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4526 states, 4525 states have (on average 2.5608839779005526) internal successors, (11588), 4525 states have internal predecessors, (11588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:33:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 11588 transitions. [2022-01-18 12:33:33,091 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 11588 transitions. Word has length 188 [2022-01-18 12:33:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:33:33,092 INFO L470 AbstractCegarLoop]: Abstraction has 4526 states and 11588 transitions. [2022-01-18 12:33:33,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 4.607476635514018) internal successors, (493), 107 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:33:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 11588 transitions. [2022-01-18 12:33:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-18 12:33:33,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:33:33,098 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:33:33,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-18 12:33:33,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:33:33,298 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:33:33,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:33:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash 21361953, now seen corresponding path program 12 times [2022-01-18 12:33:33,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:33:33,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275517533] [2022-01-18 12:33:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:33:33,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:33:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:33:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:33:36,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:33:36,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275517533] [2022-01-18 12:33:36,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275517533] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:33:36,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178810083] [2022-01-18 12:33:36,318 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:33:36,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:33:36,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:33:36,319 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:33:36,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 12:33:36,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:33:36,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:33:36,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 79 conjunts are in the unsatisfiable core [2022-01-18 12:33:36,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:33:36,462 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:33:36,922 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 12:33:36,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-01-18 12:33:42,655 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-01-18 12:33:42,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 75 [2022-01-18 12:33:42,687 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:33:42,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 60 treesize of output 46 [2022-01-18 12:33:44,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:33:44,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:33:44,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:33:44,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:33:44,132 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:33:44,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 16 [2022-01-18 12:33:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:33:44,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:33:45,417 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_584 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_584 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base)) (.cse1 (* c_~start~0 4))) (<= (select .cse0 (+ .cse1 c_~queue~0.offset)) (select .cse0 (+ .cse1 c_~queue~0.offset 4)))))) is different from false [2022-01-18 12:33:47,537 INFO L353 Elim1Store]: treesize reduction 93, result has 66.2 percent of original size [2022-01-18 12:33:47,537 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 155 treesize of output 254 [2022-01-18 12:33:47,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 58 treesize of output 52 [2022-01-18 12:33:47,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:33:47,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 39 [2022-01-18 12:33:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 6 not checked. [2022-01-18 12:33:58,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178810083] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:33:58,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:33:58,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 36] total 86 [2022-01-18 12:33:58,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271375894] [2022-01-18 12:33:58,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:33:58,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 12:33:58,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:33:58,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 12:33:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=736, Invalid=6407, Unknown=1, NotChecked=166, Total=7310 [2022-01-18 12:33:58,083 INFO L87 Difference]: Start difference. First operand 4526 states and 11588 transitions. Second operand has 86 states, 86 states have (on average 4.6395348837209305) internal successors, (399), 86 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:15,625 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_584 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset))))) (.cse1 (not (= (mod c_~ok~0 256) 0))) (.cse2 (forall ((v_ArrVal_584 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base)) (.cse6 (* c_~start~0 4))) (<= (select .cse5 (+ .cse6 c_~queue~0.offset)) (select .cse5 (+ .cse6 c_~queue~0.offset 4))))))) (and .cse0 .cse1 .cse2 (or (<= c_~n~0 c_~end~0) (< c_~end~0 0) (and .cse0 .cse1 .cse2) (forall ((v_~i~0_54 Int)) (let ((.cse4 (select |c_#memory_int| c_~A~0.base))) (let ((.cse3 (select .cse4 (+ c_~A~0.offset (* v_~i~0_54 4))))) (or (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse3)) (< .cse3 (select .cse4 (+ c_~A~0.offset (* c_~i~0 4))))))))))) is different from false [2022-01-18 12:34:15,902 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_584 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset))))) (.cse1 (not (= (mod c_~ok~0 256) 0))) (.cse2 (forall ((v_ArrVal_584 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base)) (.cse5 (* c_~start~0 4))) (<= (select .cse4 (+ .cse5 c_~queue~0.offset)) (select .cse4 (+ .cse5 c_~queue~0.offset 4))))))) (and .cse0 .cse1 .cse2 (or (<= c_~n~0 c_~end~0) (< c_~end~0 0) (forall ((~i~0 Int)) (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* ~i~0 4))))) (or (< .cse3 |c_thread1Thread1of1ForFork0_#t~mem5#1|) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse3))))) (and .cse0 .cse1 .cse2)))) is different from false [2022-01-18 12:34:15,923 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_584 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset))))) (.cse1 (not (= (mod c_~ok~0 256) 0))) (.cse2 (forall ((v_ArrVal_584 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base)) (.cse5 (* c_~start~0 4))) (<= (select .cse4 (+ .cse5 c_~queue~0.offset)) (select .cse4 (+ .cse5 c_~queue~0.offset 4))))))) (and (or (<= c_~n~0 c_~end~0) (< c_~end~0 0) (and .cse0 .cse1 .cse2) (forall ((~i~0 Int)) (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* ~i~0 4))))) (or (< .cse3 c_~last~0) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse3)))))) .cse0 .cse1 .cse2)) is different from false [2022-01-18 12:34:19,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:34:19,905 INFO L93 Difference]: Finished difference Result 9927 states and 25976 transitions. [2022-01-18 12:34:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-18 12:34:19,906 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.6395348837209305) internal successors, (399), 86 states have internal predecessors, (399), 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) Word has length 188 [2022-01-18 12:34:19,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:34:19,920 INFO L225 Difference]: With dead ends: 9927 [2022-01-18 12:34:19,920 INFO L226 Difference]: Without dead ends: 9918 [2022-01-18 12:34:19,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 342 SyntacticMatches, 20 SemanticMatches, 176 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 10505 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=3458, Invalid=26648, Unknown=12, NotChecked=1388, Total=31506 [2022-01-18 12:34:19,923 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 2796 mSDsluCounter, 9153 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 8918 SdHoareTripleChecker+Invalid, 6231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3405 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:34:19,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2796 Valid, 8918 Invalid, 6231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2635 Invalid, 0 Unknown, 3405 Unchecked, 3.8s Time] [2022-01-18 12:34:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9918 states. [2022-01-18 12:34:20,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9918 to 5424. [2022-01-18 12:34:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5423 states have (on average 2.5718237138115434) internal successors, (13947), 5423 states have internal predecessors, (13947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 13947 transitions. [2022-01-18 12:34:20,027 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 13947 transitions. Word has length 188 [2022-01-18 12:34:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:34:20,027 INFO L470 AbstractCegarLoop]: Abstraction has 5424 states and 13947 transitions. [2022-01-18 12:34:20,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.6395348837209305) internal successors, (399), 86 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:34:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 13947 transitions. [2022-01-18 12:34:20,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-18 12:34:20,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:34:20,035 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:34:20,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 12:34:20,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-01-18 12:34:20,239 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:34:20,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:34:20,240 INFO L85 PathProgramCache]: Analyzing trace with hash -545428089, now seen corresponding path program 13 times [2022-01-18 12:34:20,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:34:20,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219752244] [2022-01-18 12:34:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:34:20,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:34:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:34:23,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:34:23,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219752244] [2022-01-18 12:34:23,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219752244] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:34:23,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660851404] [2022-01-18 12:34:23,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:34:23,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:34:23,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:34:23,953 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:34:23,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 12:34:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:34:24,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-18 12:34:24,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:34:24,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:34:24,960 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 12:34:24,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-01-18 12:34:30,978 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-01-18 12:34:30,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 74 [2022-01-18 12:34:31,014 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:34:31,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 59 treesize of output 45 [2022-01-18 12:34:32,447 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 12:34:32,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 13 [2022-01-18 12:34:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:34:32,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:34:33,962 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~start~0 1))) (or (< .cse0 0) (<= c_~n~0 .cse0) (and (forall ((v_ArrVal_626 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_626) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_626 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_626) c_~queue~0.base)) (.cse2 (* c_~start~0 4))) (<= (select .cse1 (+ .cse2 c_~queue~0.offset)) (select .cse1 (+ .cse2 c_~queue~0.offset 4)))))))) is different from false [2022-01-18 12:34:36,519 INFO L353 Elim1Store]: treesize reduction 89, result has 67.0 percent of original size [2022-01-18 12:34:36,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 154 treesize of output 253 [2022-01-18 12:34:36,542 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 58 treesize of output 52 [2022-01-18 12:34:36,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:34:36,552 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 39 [2022-01-18 12:34:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 6 not checked. [2022-01-18 12:34:55,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660851404] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:34:55,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:34:55,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 36, 37] total 99 [2022-01-18 12:34:55,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193237057] [2022-01-18 12:34:55,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:34:55,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-18 12:34:55,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:34:55,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-18 12:34:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=8550, Unknown=10, NotChecked=192, Total=9702 [2022-01-18 12:34:55,999 INFO L87 Difference]: Start difference. First operand 5424 states and 13947 transitions. Second operand has 99 states, 99 states have (on average 4.898989898989899) internal successors, (485), 99 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:17,474 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse14 (+ c_~start~0 1)) (.cse8 (select |c_#memory_int| c_~queue~0.base)) (.cse11 (+ (* c_~start~0 4) c_~queue~0.offset))) (let ((.cse7 (select .cse8 .cse11)) (.cse0 (not (< c_~end~0 c_~n~0))) (.cse1 (< .cse14 0)) (.cse2 (<= c_~n~0 .cse14)) (.cse3 (not (<= 0 c_~end~0))) (.cse4 (and (forall ((v_ArrVal_626 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_626) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_626 (Array Int Int))) (let ((.cse12 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_626) c_~queue~0.base)) (.cse13 (* c_~start~0 4))) (<= (select .cse12 (+ .cse13 c_~queue~0.offset)) (select .cse12 (+ .cse13 c_~queue~0.offset 4))))))) (.cse10 (+ 2 c_~start~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 (forall ((v_~i~0_58 Int)) (let ((.cse6 (select |c_#memory_int| c_~A~0.base))) (let ((.cse5 (select .cse6 (+ c_~A~0.offset (* v_~i~0_58 4))))) (or (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse5)) (< .cse5 (select .cse6 (+ c_~A~0.offset (* c_~i~0 4))))))))) (<= .cse7 (select .cse8 4)) (= (+ (- 1) c_~ok~0) 0) (<= c_~v_old~0 .cse7) (or .cse0 .cse1 .cse2 .cse3 .cse4 (forall ((~i~0 Int)) (let ((.cse9 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* ~i~0 4))))) (or (< .cse9 c_~last~0) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse9)))))) (<= .cse10 c_~n~0) (<= .cse10 c_~end~0) (= c_~queue~0.offset 0) (= .cse11 0)))) is different from false [2022-01-18 12:35:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:35:33,533 INFO L93 Difference]: Finished difference Result 15961 states and 42079 transitions. [2022-01-18 12:35:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-18 12:35:33,534 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 4.898989898989899) internal successors, (485), 99 states have internal predecessors, (485), 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) Word has length 188 [2022-01-18 12:35:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:35:33,557 INFO L225 Difference]: With dead ends: 15961 [2022-01-18 12:35:33,557 INFO L226 Difference]: Without dead ends: 15751 [2022-01-18 12:35:33,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 342 SyntacticMatches, 42 SemanticMatches, 202 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 15311 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=4300, Invalid=36166, Unknown=144, NotChecked=802, Total=41412 [2022-01-18 12:35:33,559 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 3070 mSDsluCounter, 11331 mSDsCounter, 0 mSdLazyCounter, 3275 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3070 SdHoareTripleChecker+Valid, 10769 SdHoareTripleChecker+Invalid, 9600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6154 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:35:33,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3070 Valid, 10769 Invalid, 9600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3275 Invalid, 0 Unknown, 6154 Unchecked, 3.7s Time] [2022-01-18 12:35:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15751 states. [2022-01-18 12:35:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15751 to 6247. [2022-01-18 12:35:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6247 states, 6246 states have (on average 2.61831572206212) internal successors, (16354), 6246 states have internal predecessors, (16354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6247 states to 6247 states and 16354 transitions. [2022-01-18 12:35:33,695 INFO L78 Accepts]: Start accepts. Automaton has 6247 states and 16354 transitions. Word has length 188 [2022-01-18 12:35:33,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:35:33,695 INFO L470 AbstractCegarLoop]: Abstraction has 6247 states and 16354 transitions. [2022-01-18 12:35:33,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 4.898989898989899) internal successors, (485), 99 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:35:33,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6247 states and 16354 transitions. [2022-01-18 12:35:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-18 12:35:33,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:35:33,705 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:35:33,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 12:35:33,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:33,922 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:35:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:35:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash -752671369, now seen corresponding path program 14 times [2022-01-18 12:35:33,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:35:33,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386850088] [2022-01-18 12:35:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:35:33,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:35:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:35:36,633 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 12:35:36,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:35:36,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386850088] [2022-01-18 12:35:36,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386850088] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:35:36,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041054130] [2022-01-18 12:35:36,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:35:36,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:35:36,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:35:36,635 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:35:36,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 12:35:36,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:35:36,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:35:36,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-18 12:35:36,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:35:37,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:35:38,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 12:35:40,111 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 12:35:40,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-01-18 12:35:40,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:35:40,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:35:41,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 12:35:44,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 12:35:44,250 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-01-18 12:35:44,250 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 74 [2022-01-18 12:35:44,278 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:35:44,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 59 treesize of output 45 [2022-01-18 12:35:45,768 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 12:35:45,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 13 [2022-01-18 12:35:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 12:35:46,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:37:59,685 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 12:37:59,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 295 treesize of output 187 [2022-01-18 12:38:00,135 INFO L353 Elim1Store]: treesize reduction 66, result has 82.3 percent of original size [2022-01-18 12:38:00,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 4401 treesize of output 4151 [2022-01-18 12:38:00,421 INFO L353 Elim1Store]: treesize reduction 51, result has 79.3 percent of original size [2022-01-18 12:38:00,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 4151 treesize of output 3933 [2022-01-18 12:38:00,741 INFO L353 Elim1Store]: treesize reduction 51, result has 79.3 percent of original size [2022-01-18 12:38:00,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 3933 treesize of output 3303 [2022-01-18 12:38:00,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1635 treesize of output 1443 [2022-01-18 12:38:00,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 12:38:00,915 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1443 treesize of output 1235 Received shutdown request... [2022-01-18 12:41:44,554 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 12:41:44,560 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 [2022-01-18 12:41:44,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 12:41:44,584 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 12:41:44,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:41:44,763 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 189 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-49-3-2-2-2-2-2-2-2-2-2-2-2-2-1 context. [2022-01-18 12:41:44,765 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 12:41:44,765 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 12:41:44,767 INFO L732 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1, 1, 1, 1, 1] [2022-01-18 12:41:44,768 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 12:41:44,768 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 12:41:44,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 12:41:44 BasicIcfg [2022-01-18 12:41:44,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 12:41:44,771 INFO L158 Benchmark]: Toolchain (without parser) took 802191.09ms. Allocated memory was 364.9MB in the beginning and 704.6MB in the end (delta: 339.7MB). Free memory was 308.0MB in the beginning and 467.9MB in the end (delta: -159.9MB). Peak memory consumption was 481.1MB. Max. memory is 16.0GB. [2022-01-18 12:41:44,772 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 324.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:41:44,772 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.80ms. Allocated memory was 364.9MB in the beginning and 467.7MB in the end (delta: 102.8MB). Free memory was 307.8MB in the beginning and 437.1MB in the end (delta: -129.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. [2022-01-18 12:41:44,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.45ms. Allocated memory is still 467.7MB. Free memory was 437.1MB in the beginning and 435.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:41:44,773 INFO L158 Benchmark]: Boogie Preprocessor took 21.79ms. Allocated memory is still 467.7MB. Free memory was 435.0MB in the beginning and 432.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:41:44,773 INFO L158 Benchmark]: RCFGBuilder took 470.57ms. Allocated memory is still 467.7MB. Free memory was 432.9MB in the beginning and 408.8MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2022-01-18 12:41:44,775 INFO L158 Benchmark]: TraceAbstraction took 801486.14ms. Allocated memory was 467.7MB in the beginning and 704.6MB in the end (delta: 237.0MB). Free memory was 407.7MB in the beginning and 467.9MB in the end (delta: -60.2MB). Peak memory consumption was 479.7MB. Max. memory is 16.0GB. [2022-01-18 12:41:44,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 324.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 181.80ms. Allocated memory was 364.9MB in the beginning and 467.7MB in the end (delta: 102.8MB). Free memory was 307.8MB in the beginning and 437.1MB in the end (delta: -129.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.45ms. Allocated memory is still 467.7MB. Free memory was 437.1MB in the beginning and 435.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.79ms. Allocated memory is still 467.7MB. Free memory was 435.0MB in the beginning and 432.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 470.57ms. Allocated memory is still 467.7MB. Free memory was 432.9MB in the beginning and 408.8MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 801486.14ms. Allocated memory was 467.7MB in the beginning and 704.6MB in the end (delta: 237.0MB). Free memory was 407.7MB in the beginning and 467.9MB in the end (delta: -60.2MB). Peak memory consumption was 479.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 189 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-49-3-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 189 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-49-3-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 189 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-49-3-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 199 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 801.4s, OverallIterations: 22, TraceHistogramMax: 3, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.1s, AutomataDifference: 208.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47603 SdHoareTripleChecker+Valid, 29.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47603 mSDsluCounter, 96696 SdHoareTripleChecker+Invalid, 26.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 30112 IncrementalHoareTripleChecker+Unchecked, 100056 mSDsCounter, 3102 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36062 IncrementalHoareTripleChecker+Invalid, 69276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3102 mSolverCounterUnsat, 3948 mSDtfsCounter, 36062 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6718 GetRequests, 4412 SyntacticMatches, 208 SemanticMatches, 2098 ConstructedPredicates, 10 IntricatePredicates, 7 DeprecatedPredicates, 138408 ImplicationChecksByTransitivity, 232.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6247occurred in iteration=21, InterpolantAutomatonStates: 1370, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 56124 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 214.8s InterpolantComputationTime, 5814 NumberOfCodeBlocks, 5784 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 8159 ConstructedInterpolants, 709 QuantifiedInterpolants, 163774 SizeOfPredicates, 498 NumberOfNonLiveVariables, 5246 ConjunctsInSsa, 710 ConjunctsInUnsatCore, 49 InterpolantComputations, 7 PerfectInterpolantSequences, 333/796 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