/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:43:04,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:43:04,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:43:04,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:43:04,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:43:04,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:43:04,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:43:04,340 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.epf [2022-03-03 17:43:04,362 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:43:04,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:43:04,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:43:04,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:43:04,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:43:04,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:43:04,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:43:04,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:43:04,364 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:43:04,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:43:04,364 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:43:04,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:43:04,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:43:04,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:43:04,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:43:04,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:43:04,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:43:04,365 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:43:04,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:43:04,365 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:43:04,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:43:04,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:43:04,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:43:04,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:43:04,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:43:04,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:43:04,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:43:04,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:43:04,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:43:04,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:43:04,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:43:04,367 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:43:04,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:43:04,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:43:04,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:43:04,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:43:04,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:43:04,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:43:04,575 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:43:04,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-03-03 17:43:04,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e991d4c40/4d86883a29484573a84c7915c41005c3/FLAGa83233789 [2022-03-03 17:43:04,904 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:43:04,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-03-03 17:43:04,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e991d4c40/4d86883a29484573a84c7915c41005c3/FLAGa83233789 [2022-03-03 17:43:05,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e991d4c40/4d86883a29484573a84c7915c41005c3 [2022-03-03 17:43:05,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:43:05,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:43:05,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:43:05,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:43:05,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:43:05,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b931c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05, skipping insertion in model container [2022-03-03 17:43:05,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:43:05,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:43:05,513 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-send-receive-alt.wvr.c[2650,2663] [2022-03-03 17:43:05,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:43:05,522 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:43:05,552 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-send-receive-alt.wvr.c[2650,2663] [2022-03-03 17:43:05,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:43:05,563 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:43:05,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05 WrapperNode [2022-03-03 17:43:05,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:43:05,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:43:05,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:43:05,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:43:05,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,601 INFO L137 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 142 [2022-03-03 17:43:05,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:43:05,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:43:05,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:43:05,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:43:05,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:43:05,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:43:05,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:43:05,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:43:05,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (1/1) ... [2022-03-03 17:43:05,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:43:05,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:05,658 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) [2022-03-03 17:43:05,663 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 [2022-03-03 17:43:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:43:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:43:05,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:43:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:43:05,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:43:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:43:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:43:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:43:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:43:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:43:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-03 17:43:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:43:05,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:43:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:43:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:43:05,696 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:43:05,795 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:43:05,796 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:43:05,997 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:43:06,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:43:06,067 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-03 17:43:06,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:43:06 BoogieIcfgContainer [2022-03-03 17:43:06,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:43:06,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:43:06,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:43:06,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:43:06,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:43:05" (1/3) ... [2022-03-03 17:43:06,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299c3009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:43:06, skipping insertion in model container [2022-03-03 17:43:06,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:43:05" (2/3) ... [2022-03-03 17:43:06,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299c3009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:43:06, skipping insertion in model container [2022-03-03 17:43:06,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:43:06" (3/3) ... [2022-03-03 17:43:06,074 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2022-03-03 17:43:06,077 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:43:06,077 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:43:06,077 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:43:06,077 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:43:06,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,114 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,114 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,114 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,115 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,116 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,116 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,120 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,120 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,121 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,121 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,121 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,121 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,121 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,122 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,122 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,122 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,122 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,122 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,123 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,123 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,123 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,123 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,123 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,123 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,123 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,123 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,124 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,124 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,125 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,128 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,129 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:43:06,136 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:43:06,167 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:43:06,173 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, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:43:06,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:43:06,182 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 133 transitions, 282 flow [2022-03-03 17:43:06,233 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 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) [2022-03-03 17:43:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 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) [2022-03-03 17:43:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-03 17:43:06,250 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:06,250 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] [2022-03-03 17:43:06,251 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash -386855673, now seen corresponding path program 1 times [2022-03-03 17:43:06,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:06,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976074390] [2022-03-03 17:43:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:06,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:06,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:06,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976074390] [2022-03-03 17:43:06,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976074390] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:43:06,392 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:43:06,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:43:06,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348671813] [2022-03-03 17:43:06,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:43:06,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:43:06,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:43:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:43:06,417 INFO L87 Difference]: Start difference. First operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 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 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-03-03 17:43:06,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:06,459 INFO L93 Difference]: Finished difference Result 676 states and 1686 transitions. [2022-03-03 17:43:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:43:06,461 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2022-03-03 17:43:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:06,488 INFO L225 Difference]: With dead ends: 676 [2022-03-03 17:43:06,488 INFO L226 Difference]: Without dead ends: 642 [2022-03-03 17:43:06,489 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 [2022-03-03 17:43:06,491 INFO L933 BasicCegarLoop]: 108 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, 108 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 [2022-03-03 17:43:06,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:43:06,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-03-03 17:43:06,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-03-03 17:43:06,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 2.49609984399376) internal successors, (1600), 641 states have internal predecessors, (1600), 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) [2022-03-03 17:43:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1600 transitions. [2022-03-03 17:43:06,556 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1600 transitions. Word has length 86 [2022-03-03 17:43:06,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:06,557 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 1600 transitions. [2022-03-03 17:43:06,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-03-03 17:43:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1600 transitions. [2022-03-03 17:43:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-03 17:43:06,560 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:06,560 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] [2022-03-03 17:43:06,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:43:06,560 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:06,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:06,561 INFO L85 PathProgramCache]: Analyzing trace with hash -897208069, now seen corresponding path program 1 times [2022-03-03 17:43:06,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:06,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865155531] [2022-03-03 17:43:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:06,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:06,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:06,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865155531] [2022-03-03 17:43:06,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865155531] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:43:06,737 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:43:06,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:43:06,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162540371] [2022-03-03 17:43:06,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:43:06,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:43:06,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:06,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:43:06,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:43:06,739 INFO L87 Difference]: Start difference. First operand 642 states and 1600 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2022-03-03 17:43:06,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:06,820 INFO L93 Difference]: Finished difference Result 1217 states and 3132 transitions. [2022-03-03 17:43:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:43:06,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 88 [2022-03-03 17:43:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:06,825 INFO L225 Difference]: With dead ends: 1217 [2022-03-03 17:43:06,825 INFO L226 Difference]: Without dead ends: 864 [2022-03-03 17:43:06,827 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 [2022-03-03 17:43:06,828 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:06,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 344 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:43:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-03-03 17:43:06,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 716. [2022-03-03 17:43:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 2.521678321678322) internal successors, (1803), 715 states have internal predecessors, (1803), 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) [2022-03-03 17:43:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1803 transitions. [2022-03-03 17:43:06,858 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1803 transitions. Word has length 88 [2022-03-03 17:43:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:06,859 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1803 transitions. [2022-03-03 17:43:06,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2022-03-03 17:43:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1803 transitions. [2022-03-03 17:43:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-03 17:43:06,864 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:06,864 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] [2022-03-03 17:43:06,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:43:06,864 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash -672454208, now seen corresponding path program 1 times [2022-03-03 17:43:06,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:06,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305633901] [2022-03-03 17:43:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:06,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:07,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:07,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305633901] [2022-03-03 17:43:07,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305633901] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:43:07,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:43:07,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:43:07,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126895334] [2022-03-03 17:43:07,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:43:07,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:43:07,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:43:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:43:07,073 INFO L87 Difference]: Start difference. First operand 716 states and 1803 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-03-03 17:43:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:07,101 INFO L93 Difference]: Finished difference Result 843 states and 2119 transitions. [2022-03-03 17:43:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:43:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-03-03 17:43:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:07,106 INFO L225 Difference]: With dead ends: 843 [2022-03-03 17:43:07,106 INFO L226 Difference]: Without dead ends: 795 [2022-03-03 17:43:07,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:43:07,111 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:07,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 147 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:43:07,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-03-03 17:43:07,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2022-03-03 17:43:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.522670025188917) internal successors, (2003), 794 states have internal predecessors, (2003), 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) [2022-03-03 17:43:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2003 transitions. [2022-03-03 17:43:07,138 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2003 transitions. Word has length 91 [2022-03-03 17:43:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:07,140 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 2003 transitions. [2022-03-03 17:43:07,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-03-03 17:43:07,140 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2003 transitions. [2022-03-03 17:43:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-03 17:43:07,145 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:07,145 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] [2022-03-03 17:43:07,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:43:07,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:07,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash 653585244, now seen corresponding path program 1 times [2022-03-03 17:43:07,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:07,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313101694] [2022-03-03 17:43:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:07,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:07,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:07,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313101694] [2022-03-03 17:43:07,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313101694] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:43:07,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:43:07,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 17:43:07,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681822933] [2022-03-03 17:43:07,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:43:07,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:43:07,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:07,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:43:07,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:43:07,263 INFO L87 Difference]: Start difference. First operand 795 states and 2003 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2022-03-03 17:43:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:07,377 INFO L93 Difference]: Finished difference Result 1164 states and 2885 transitions. [2022-03-03 17:43:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 17:43:07,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 102 [2022-03-03 17:43:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:07,381 INFO L225 Difference]: With dead ends: 1164 [2022-03-03 17:43:07,381 INFO L226 Difference]: Without dead ends: 801 [2022-03-03 17:43:07,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:43:07,387 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 422 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:07,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 338 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:43:07,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-03-03 17:43:07,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 796. [2022-03-03 17:43:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.520754716981132) internal successors, (2004), 795 states have internal predecessors, (2004), 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) [2022-03-03 17:43:07,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2004 transitions. [2022-03-03 17:43:07,403 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2004 transitions. Word has length 102 [2022-03-03 17:43:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:07,403 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2004 transitions. [2022-03-03 17:43:07,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2022-03-03 17:43:07,404 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2004 transitions. [2022-03-03 17:43:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-03 17:43:07,406 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:07,406 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] [2022-03-03 17:43:07,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:43:07,406 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1083191651, now seen corresponding path program 1 times [2022-03-03 17:43:07,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:07,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438497329] [2022-03-03 17:43:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:07,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:43:07,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:07,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438497329] [2022-03-03 17:43:07,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438497329] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:07,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76934063] [2022-03-03 17:43:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:07,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:07,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:07,558 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) [2022-03-03 17:43:07,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:43:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:07,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-03 17:43:07,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:08,699 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 19 treesize of output 7 [2022-03-03 17:43:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:08,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:08,887 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:43:08,887 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 34 [2022-03-03 17:43:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:10,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76934063] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:10,033 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:10,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 17] total 38 [2022-03-03 17:43:10,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396628579] [2022-03-03 17:43:10,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:10,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:43:10,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:10,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:43:10,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:43:10,035 INFO L87 Difference]: Start difference. First operand 796 states and 2004 transitions. Second operand has 38 states, 38 states have (on average 6.894736842105263) internal successors, (262), 38 states have internal predecessors, (262), 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) [2022-03-03 17:43:10,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:10,690 INFO L93 Difference]: Finished difference Result 2869 states and 7591 transitions. [2022-03-03 17:43:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:43:10,691 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.894736842105263) internal successors, (262), 38 states have internal predecessors, (262), 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 109 [2022-03-03 17:43:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:10,698 INFO L225 Difference]: With dead ends: 2869 [2022-03-03 17:43:10,698 INFO L226 Difference]: Without dead ends: 1939 [2022-03-03 17:43:10,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 183 SyntacticMatches, 10 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=690, Invalid=2502, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:43:10,699 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 794 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:10,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1667 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 426 Invalid, 0 Unknown, 154 Unchecked, 0.2s Time] [2022-03-03 17:43:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2022-03-03 17:43:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1346. [2022-03-03 17:43:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 2.573977695167286) internal successors, (3462), 1345 states have internal predecessors, (3462), 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) [2022-03-03 17:43:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 3462 transitions. [2022-03-03 17:43:10,725 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 3462 transitions. Word has length 109 [2022-03-03 17:43:10,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:10,726 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 3462 transitions. [2022-03-03 17:43:10,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.894736842105263) internal successors, (262), 38 states have internal predecessors, (262), 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) [2022-03-03 17:43:10,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 3462 transitions. [2022-03-03 17:43:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-03 17:43:10,728 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:10,729 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] [2022-03-03 17:43:10,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:10,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:10,944 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:10,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash 94566077, now seen corresponding path program 1 times [2022-03-03 17:43:10,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:10,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244487440] [2022-03-03 17:43:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:10,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:43:11,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:11,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244487440] [2022-03-03 17:43:11,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244487440] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:43:11,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:43:11,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:43:11,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488344709] [2022-03-03 17:43:11,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:43:11,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:43:11,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:43:11,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:43:11,018 INFO L87 Difference]: Start difference. First operand 1346 states and 3462 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-03-03 17:43:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:11,035 INFO L93 Difference]: Finished difference Result 1393 states and 3569 transitions. [2022-03-03 17:43:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:43:11,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2022-03-03 17:43:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:11,068 INFO L225 Difference]: With dead ends: 1393 [2022-03-03 17:43:11,068 INFO L226 Difference]: Without dead ends: 1393 [2022-03-03 17:43:11,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:43:11,069 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 13 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:11,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 207 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:43:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2022-03-03 17:43:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1334. [2022-03-03 17:43:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 2.557389347336834) internal successors, (3409), 1333 states have internal predecessors, (3409), 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) [2022-03-03 17:43:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 3409 transitions. [2022-03-03 17:43:11,093 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 3409 transitions. Word has length 109 [2022-03-03 17:43:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:11,093 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 3409 transitions. [2022-03-03 17:43:11,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-03-03 17:43:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 3409 transitions. [2022-03-03 17:43:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-03-03 17:43:11,096 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:11,096 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:43:11,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 17:43:11,096 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:11,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1998461693, now seen corresponding path program 2 times [2022-03-03 17:43:11,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:11,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119451280] [2022-03-03 17:43:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:11,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:43:11,151 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:11,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119451280] [2022-03-03 17:43:11,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119451280] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:11,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322044069] [2022-03-03 17:43:11,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:43:11,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:11,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:11,152 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) [2022-03-03 17:43:11,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:43:11,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:43:11,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:11,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:43:11,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 17:43:11,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:43:11,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322044069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:43:11,396 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:43:11,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2022-03-03 17:43:11,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743106297] [2022-03-03 17:43:11,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:43:11,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:43:11,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:11,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:43:11,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:43:11,397 INFO L87 Difference]: Start difference. First operand 1334 states and 3409 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-03-03 17:43:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:11,432 INFO L93 Difference]: Finished difference Result 3048 states and 7997 transitions. [2022-03-03 17:43:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 17:43:11,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 115 [2022-03-03 17:43:11,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:11,443 INFO L225 Difference]: With dead ends: 3048 [2022-03-03 17:43:11,443 INFO L226 Difference]: Without dead ends: 2856 [2022-03-03 17:43:11,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:43:11,444 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 128 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:11,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 294 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:43:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2022-03-03 17:43:11,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2218. [2022-03-03 17:43:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2217 states have (on average 2.6738836265223274) internal successors, (5928), 2217 states have internal predecessors, (5928), 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) [2022-03-03 17:43:11,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 5928 transitions. [2022-03-03 17:43:11,488 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 5928 transitions. Word has length 115 [2022-03-03 17:43:11,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:11,491 INFO L470 AbstractCegarLoop]: Abstraction has 2218 states and 5928 transitions. [2022-03-03 17:43:11,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-03-03 17:43:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 5928 transitions. [2022-03-03 17:43:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-03 17:43:11,495 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:11,495 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-03-03 17:43:11,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-03 17:43:11,711 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,SelfDestructingSolverStorable6 [2022-03-03 17:43:11,711 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:11,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:11,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1016729003, now seen corresponding path program 3 times [2022-03-03 17:43:11,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:11,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033500716] [2022-03-03 17:43:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:11,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-03 17:43:11,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:11,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033500716] [2022-03-03 17:43:11,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033500716] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:43:11,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:43:11,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 17:43:11,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192179266] [2022-03-03 17:43:11,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:43:11,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 17:43:11,797 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:11,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 17:43:11,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:43:11,798 INFO L87 Difference]: Start difference. First operand 2218 states and 5928 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2022-03-03 17:43:11,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:11,830 INFO L93 Difference]: Finished difference Result 3561 states and 9503 transitions. [2022-03-03 17:43:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 17:43:11,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 126 [2022-03-03 17:43:11,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:11,843 INFO L225 Difference]: With dead ends: 3561 [2022-03-03 17:43:11,843 INFO L226 Difference]: Without dead ends: 3561 [2022-03-03 17:43:11,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:43:11,844 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 62 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:11,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:43:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2022-03-03 17:43:11,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3236. [2022-03-03 17:43:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 3235 states have (on average 2.6884080370942813) internal successors, (8697), 3235 states have internal predecessors, (8697), 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) [2022-03-03 17:43:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 8697 transitions. [2022-03-03 17:43:11,952 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 8697 transitions. Word has length 126 [2022-03-03 17:43:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:11,952 INFO L470 AbstractCegarLoop]: Abstraction has 3236 states and 8697 transitions. [2022-03-03 17:43:11,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2022-03-03 17:43:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 8697 transitions. [2022-03-03 17:43:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-03 17:43:11,958 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:11,958 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-03-03 17:43:11,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-03 17:43:11,959 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash -312311179, now seen corresponding path program 1 times [2022-03-03 17:43:11,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:11,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406035522] [2022-03-03 17:43:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:11,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:43:12,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:12,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406035522] [2022-03-03 17:43:12,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406035522] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:12,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136317953] [2022-03-03 17:43:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:12,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:12,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:12,067 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) [2022-03-03 17:43:12,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:43:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:12,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 17:43:12,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 17:43:12,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:43:12,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136317953] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:12,675 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:12,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2022-03-03 17:43:12,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671384615] [2022-03-03 17:43:12,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:12,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 17:43:12,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 17:43:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:43:12,676 INFO L87 Difference]: Start difference. First operand 3236 states and 8697 transitions. Second operand has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 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) [2022-03-03 17:43:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:12,752 INFO L93 Difference]: Finished difference Result 6621 states and 17792 transitions. [2022-03-03 17:43:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:43:12,752 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 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 126 [2022-03-03 17:43:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:12,783 INFO L225 Difference]: With dead ends: 6621 [2022-03-03 17:43:12,783 INFO L226 Difference]: Without dead ends: 6477 [2022-03-03 17:43:12,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:43:12,785 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 377 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:12,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 440 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:43:12,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6477 states. [2022-03-03 17:43:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6477 to 4096. [2022-03-03 17:43:12,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4096 states, 4095 states have (on average 2.7335775335775336) internal successors, (11194), 4095 states have internal predecessors, (11194), 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) [2022-03-03 17:43:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 11194 transitions. [2022-03-03 17:43:12,922 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 11194 transitions. Word has length 126 [2022-03-03 17:43:12,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:12,922 INFO L470 AbstractCegarLoop]: Abstraction has 4096 states and 11194 transitions. [2022-03-03 17:43:12,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 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) [2022-03-03 17:43:12,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 11194 transitions. [2022-03-03 17:43:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:43:12,929 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:12,929 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:43:12,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-03 17:43:13,143 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 [2022-03-03 17:43:13,144 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:13,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1286212861, now seen corresponding path program 2 times [2022-03-03 17:43:13,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:13,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803132483] [2022-03-03 17:43:13,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:13,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:43:13,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:13,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803132483] [2022-03-03 17:43:13,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803132483] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:13,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283349650] [2022-03-03 17:43:13,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:43:13,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:13,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:13,369 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) [2022-03-03 17:43:13,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:43:13,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:43:13,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:13,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 78 conjunts are in the unsatisfiable core [2022-03-03 17:43:13,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:13,506 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 [2022-03-03 17:43:13,893 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:43:13,893 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 [2022-03-03 17:43:14,221 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 15 treesize of output 11 [2022-03-03 17:43:14,496 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 [2022-03-03 17:43:14,557 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 [2022-03-03 17:43:15,332 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-03-03 17:43:15,333 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 47 treesize of output 20 [2022-03-03 17:43:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:15,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:19,187 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:43:19,187 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 184 treesize of output 124 [2022-03-03 17:43:19,219 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-03-03 17:43:19,219 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 380 treesize of output 370 [2022-03-03 17:43:19,251 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-03-03 17:43:19,251 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 330 treesize of output 294 [2022-03-03 17:43:19,282 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-03-03 17:43:19,283 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 254 treesize of output 256 [2022-03-03 17:43:22,920 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 [2022-03-03 17:43:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:22,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283349650] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:22,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:22,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 33, 31] total 65 [2022-03-03 17:43:22,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909364426] [2022-03-03 17:43:22,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:22,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-03-03 17:43:22,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:22,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-03-03 17:43:22,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=3558, Unknown=62, NotChecked=0, Total=4160 [2022-03-03 17:43:22,970 INFO L87 Difference]: Start difference. First operand 4096 states and 11194 transitions. Second operand has 65 states, 65 states have (on average 5.061538461538461) internal successors, (329), 65 states have internal predecessors, (329), 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) [2022-03-03 17:43:26,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:26,538 INFO L93 Difference]: Finished difference Result 11061 states and 30061 transitions. [2022-03-03 17:43:26,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 17:43:26,539 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.061538461538461) internal successors, (329), 65 states have internal predecessors, (329), 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 130 [2022-03-03 17:43:26,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:26,559 INFO L225 Difference]: With dead ends: 11061 [2022-03-03 17:43:26,560 INFO L226 Difference]: Without dead ends: 9945 [2022-03-03 17:43:26,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 222 SyntacticMatches, 6 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3586 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2035, Invalid=11709, Unknown=62, NotChecked=0, Total=13806 [2022-03-03 17:43:26,563 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 2445 mSDsluCounter, 4847 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 4794 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1196 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:26,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2445 Valid, 4794 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1007 Invalid, 0 Unknown, 1196 Unchecked, 0.5s Time] [2022-03-03 17:43:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9945 states. [2022-03-03 17:43:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9945 to 4346. [2022-03-03 17:43:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4346 states, 4345 states have (on average 2.7196777905638667) internal successors, (11817), 4345 states have internal predecessors, (11817), 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) [2022-03-03 17:43:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4346 states to 4346 states and 11817 transitions. [2022-03-03 17:43:26,680 INFO L78 Accepts]: Start accepts. Automaton has 4346 states and 11817 transitions. Word has length 130 [2022-03-03 17:43:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:26,680 INFO L470 AbstractCegarLoop]: Abstraction has 4346 states and 11817 transitions. [2022-03-03 17:43:26,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.061538461538461) internal successors, (329), 65 states have internal predecessors, (329), 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) [2022-03-03 17:43:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4346 states and 11817 transitions. [2022-03-03 17:43:26,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:43:26,688 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:26,688 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:43:26,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:26,895 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 [2022-03-03 17:43:26,895 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1805394603, now seen corresponding path program 3 times [2022-03-03 17:43:26,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:26,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136780494] [2022-03-03 17:43:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:26,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:28,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:28,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136780494] [2022-03-03 17:43:28,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136780494] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:28,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069710176] [2022-03-03 17:43:28,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:43:28,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:28,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:28,512 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) [2022-03-03 17:43:28,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:43:28,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:43:28,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:28,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-03 17:43:28,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:29,178 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:43:29,178 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 53 treesize of output 19 [2022-03-03 17:43:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:43:29,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:29,515 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:43:29,515 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 77 treesize of output 78 [2022-03-03 17:43:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:43:29,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069710176] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:29,999 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:29,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 12, 9] total 47 [2022-03-03 17:43:29,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345193703] [2022-03-03 17:43:29,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:30,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 17:43:30,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:30,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 17:43:30,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:43:30,002 INFO L87 Difference]: Start difference. First operand 4346 states and 11817 transitions. Second operand has 47 states, 47 states have (on average 6.9787234042553195) internal successors, (328), 47 states have internal predecessors, (328), 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) [2022-03-03 17:43:35,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:35,632 INFO L93 Difference]: Finished difference Result 19064 states and 52827 transitions. [2022-03-03 17:43:35,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 17:43:35,633 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.9787234042553195) internal successors, (328), 47 states have internal predecessors, (328), 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 130 [2022-03-03 17:43:35,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:35,751 INFO L225 Difference]: With dead ends: 19064 [2022-03-03 17:43:35,751 INFO L226 Difference]: Without dead ends: 18420 [2022-03-03 17:43:35,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 246 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2597 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1286, Invalid=9220, Unknown=0, NotChecked=0, Total=10506 [2022-03-03 17:43:35,754 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 2999 mSDsluCounter, 4324 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2999 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:35,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2999 Valid, 4248 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:43:35,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18420 states. [2022-03-03 17:43:35,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18420 to 6710. [2022-03-03 17:43:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6710 states, 6709 states have (on average 2.83797883440155) internal successors, (19040), 6709 states have internal predecessors, (19040), 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) [2022-03-03 17:43:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6710 states to 6710 states and 19040 transitions. [2022-03-03 17:43:35,931 INFO L78 Accepts]: Start accepts. Automaton has 6710 states and 19040 transitions. Word has length 130 [2022-03-03 17:43:35,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:35,931 INFO L470 AbstractCegarLoop]: Abstraction has 6710 states and 19040 transitions. [2022-03-03 17:43:35,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.9787234042553195) internal successors, (328), 47 states have internal predecessors, (328), 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) [2022-03-03 17:43:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6710 states and 19040 transitions. [2022-03-03 17:43:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-03 17:43:35,942 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:35,942 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-03 17:43:35,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-03 17:43:36,155 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 [2022-03-03 17:43:36,156 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:36,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash -185041979, now seen corresponding path program 4 times [2022-03-03 17:43:36,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:36,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783809764] [2022-03-03 17:43:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:36,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:37,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:37,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783809764] [2022-03-03 17:43:37,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783809764] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:37,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74299721] [2022-03-03 17:43:37,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:43:37,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:37,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:37,481 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) [2022-03-03 17:43:37,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:43:37,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:43:37,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:37,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 79 conjunts are in the unsatisfiable core [2022-03-03 17:43:37,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:43:37,575 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 [2022-03-03 17:43:37,612 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-03-03 17:43:37,612 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 18 [2022-03-03 17:43:38,212 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:43:38,213 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 15 treesize of output 15 [2022-03-03 17:43:38,509 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 15 treesize of output 11 [2022-03-03 17:43:38,902 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 [2022-03-03 17:43:38,989 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 [2022-03-03 17:43:39,620 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-03-03 17:43:39,620 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 50 treesize of output 19 [2022-03-03 17:43:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:39,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:43:43,471 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:43:43,472 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 184 treesize of output 124 [2022-03-03 17:43:43,508 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:43:43,508 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 800 treesize of output 752 [2022-03-03 17:43:43,543 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:43:43,544 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 700 treesize of output 676 [2022-03-03 17:43:43,591 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:43:43,592 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 624 treesize of output 524 [2022-03-03 17:43:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:49,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74299721] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:43:49,236 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:43:49,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 32] total 90 [2022-03-03 17:43:49,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988954639] [2022-03-03 17:43:49,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:43:49,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-03-03 17:43:49,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:43:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-03-03 17:43:49,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=808, Invalid=7191, Unknown=11, NotChecked=0, Total=8010 [2022-03-03 17:43:49,239 INFO L87 Difference]: Start difference. First operand 6710 states and 19040 transitions. Second operand has 90 states, 90 states have (on average 3.7888888888888888) internal successors, (341), 90 states have internal predecessors, (341), 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) [2022-03-03 17:43:59,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:43:59,098 INFO L93 Difference]: Finished difference Result 17549 states and 48931 transitions. [2022-03-03 17:43:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-03 17:43:59,098 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.7888888888888888) internal successors, (341), 90 states have internal predecessors, (341), 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 130 [2022-03-03 17:43:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:43:59,133 INFO L225 Difference]: With dead ends: 17549 [2022-03-03 17:43:59,133 INFO L226 Difference]: Without dead ends: 16617 [2022-03-03 17:43:59,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 218 SyntacticMatches, 9 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9078 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=3952, Invalid=25793, Unknown=11, NotChecked=0, Total=29756 [2022-03-03 17:43:59,138 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 3940 mSDsluCounter, 12513 mSDsCounter, 0 mSdLazyCounter, 3540 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3940 SdHoareTripleChecker+Valid, 11886 SdHoareTripleChecker+Invalid, 6297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2592 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:43:59,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3940 Valid, 11886 Invalid, 6297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3540 Invalid, 0 Unknown, 2592 Unchecked, 1.7s Time] [2022-03-03 17:43:59,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16617 states. [2022-03-03 17:43:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16617 to 8602. [2022-03-03 17:43:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8602 states, 8601 states have (on average 2.8280432507847926) internal successors, (24324), 8601 states have internal predecessors, (24324), 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) [2022-03-03 17:43:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8602 states to 8602 states and 24324 transitions. [2022-03-03 17:43:59,338 INFO L78 Accepts]: Start accepts. Automaton has 8602 states and 24324 transitions. Word has length 130 [2022-03-03 17:43:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:43:59,338 INFO L470 AbstractCegarLoop]: Abstraction has 8602 states and 24324 transitions. [2022-03-03 17:43:59,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.7888888888888888) internal successors, (341), 90 states have internal predecessors, (341), 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) [2022-03-03 17:43:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 8602 states and 24324 transitions. [2022-03-03 17:43:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-03-03 17:43:59,351 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:43:59,351 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-03 17:43:59,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:43:59,567 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 [2022-03-03 17:43:59,568 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:43:59,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:43:59,568 INFO L85 PathProgramCache]: Analyzing trace with hash -810578241, now seen corresponding path program 5 times [2022-03-03 17:43:59,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:43:59,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908544461] [2022-03-03 17:43:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:43:59,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:43:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:43:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:43:59,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:43:59,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908544461] [2022-03-03 17:43:59,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908544461] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:43:59,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851833478] [2022-03-03 17:43:59,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:43:59,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:43:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:43:59,721 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) [2022-03-03 17:43:59,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:43:59,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:43:59,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:43:59,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 17:43:59,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-03 17:44:00,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-03 17:44:00,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851833478] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:00,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:00,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2022-03-03 17:44:00,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546924338] [2022-03-03 17:44:00,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:00,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:44:00,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:00,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:44:00,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:44:00,621 INFO L87 Difference]: Start difference. First operand 8602 states and 24324 transitions. Second operand has 35 states, 35 states have (on average 7.514285714285714) internal successors, (263), 35 states have internal predecessors, (263), 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) [2022-03-03 17:44:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:01,370 INFO L93 Difference]: Finished difference Result 7402 states and 20912 transitions. [2022-03-03 17:44:01,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:44:01,375 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.514285714285714) internal successors, (263), 35 states have internal predecessors, (263), 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 [2022-03-03 17:44:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:01,388 INFO L225 Difference]: With dead ends: 7402 [2022-03-03 17:44:01,388 INFO L226 Difference]: Without dead ends: 7051 [2022-03-03 17:44:01,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=566, Invalid=2190, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:44:01,389 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 981 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:01,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 2151 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:44:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7051 states. [2022-03-03 17:44:01,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7051 to 7051. [2022-03-03 17:44:01,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7050 states have (on average 2.848368794326241) internal successors, (20081), 7050 states have internal predecessors, (20081), 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) [2022-03-03 17:44:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 20081 transitions. [2022-03-03 17:44:01,498 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 20081 transitions. Word has length 137 [2022-03-03 17:44:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:01,498 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 20081 transitions. [2022-03-03 17:44:01,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.514285714285714) internal successors, (263), 35 states have internal predecessors, (263), 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) [2022-03-03 17:44:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 20081 transitions. [2022-03-03 17:44:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:44:01,508 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:01,508 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-03 17:44:01,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:01,725 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 [2022-03-03 17:44:01,725 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:01,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:01,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1142216483, now seen corresponding path program 6 times [2022-03-03 17:44:01,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:01,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927532924] [2022-03-03 17:44:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:01,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:01,894 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:01,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927532924] [2022-03-03 17:44:01,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927532924] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:01,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148111635] [2022-03-03 17:44:01,894 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:44:01,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:01,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:01,895 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) [2022-03-03 17:44:01,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:44:02,077 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:44:02,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:02,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:44:02,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:44:02,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:44:03,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148111635] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:03,143 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:03,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 42 [2022-03-03 17:44:03,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143656542] [2022-03-03 17:44:03,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:03,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 17:44:03,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:03,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 17:44:03,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1525, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:44:03,144 INFO L87 Difference]: Start difference. First operand 7051 states and 20081 transitions. Second operand has 42 states, 42 states have (on average 6.904761904761905) internal successors, (290), 42 states have internal predecessors, (290), 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) [2022-03-03 17:44:04,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:04,574 INFO L93 Difference]: Finished difference Result 5280 states and 14247 transitions. [2022-03-03 17:44:04,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 17:44:04,575 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.904761904761905) internal successors, (290), 42 states have internal predecessors, (290), 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 141 [2022-03-03 17:44:04,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:04,581 INFO L225 Difference]: With dead ends: 5280 [2022-03-03 17:44:04,581 INFO L226 Difference]: Without dead ends: 4189 [2022-03-03 17:44:04,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1179, Invalid=4223, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 17:44:04,582 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 1268 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:04,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1268 Valid, 3028 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:44:04,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2022-03-03 17:44:04,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 4184. [2022-03-03 17:44:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4184 states, 4183 states have (on average 2.7580683719818313) internal successors, (11537), 4183 states have internal predecessors, (11537), 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) [2022-03-03 17:44:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 11537 transitions. [2022-03-03 17:44:04,633 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 11537 transitions. Word has length 141 [2022-03-03 17:44:04,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:04,633 INFO L470 AbstractCegarLoop]: Abstraction has 4184 states and 11537 transitions. [2022-03-03 17:44:04,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.904761904761905) internal successors, (290), 42 states have internal predecessors, (290), 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) [2022-03-03 17:44:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 11537 transitions. [2022-03-03 17:44:04,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-03 17:44:04,638 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:04,638 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-03 17:44:04,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:04,854 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 [2022-03-03 17:44:04,855 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:04,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:04,855 INFO L85 PathProgramCache]: Analyzing trace with hash 562740418, now seen corresponding path program 7 times [2022-03-03 17:44:04,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:04,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137659160] [2022-03-03 17:44:04,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:04,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:05,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:05,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137659160] [2022-03-03 17:44:05,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137659160] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:05,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214944927] [2022-03-03 17:44:05,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:44:05,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:05,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:05,568 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) [2022-03-03 17:44:05,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:44:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:05,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-03 17:44:05,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:07,490 INFO L353 Elim1Store]: treesize reduction 61, result has 39.0 percent of original size [2022-03-03 17:44:07,490 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 47 treesize of output 52 [2022-03-03 17:44:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:07,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:08,155 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:44:08,155 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 76 treesize of output 78 [2022-03-03 17:44:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:10,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214944927] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:10,418 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:10,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26, 25] total 71 [2022-03-03 17:44:10,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917093771] [2022-03-03 17:44:10,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:10,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-03-03 17:44:10,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:10,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-03-03 17:44:10,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=4317, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 17:44:10,421 INFO L87 Difference]: Start difference. First operand 4184 states and 11537 transitions. Second operand has 71 states, 71 states have (on average 5.464788732394366) internal successors, (388), 71 states have internal predecessors, (388), 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) [2022-03-03 17:44:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:44:15,843 INFO L93 Difference]: Finished difference Result 11702 states and 31047 transitions. [2022-03-03 17:44:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-03-03 17:44:15,844 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.464788732394366) internal successors, (388), 71 states have internal predecessors, (388), 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 148 [2022-03-03 17:44:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:44:15,860 INFO L225 Difference]: With dead ends: 11702 [2022-03-03 17:44:15,860 INFO L226 Difference]: Without dead ends: 11258 [2022-03-03 17:44:15,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 274 SyntacticMatches, 7 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7887 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2886, Invalid=21920, Unknown=0, NotChecked=0, Total=24806 [2022-03-03 17:44:15,865 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 3310 mSDsluCounter, 8415 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3310 SdHoareTripleChecker+Valid, 8269 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 353 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:44:15,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3310 Valid, 8269 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2288 Invalid, 0 Unknown, 353 Unchecked, 0.9s Time] [2022-03-03 17:44:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11258 states. [2022-03-03 17:44:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11258 to 6180. [2022-03-03 17:44:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6180 states, 6179 states have (on average 2.7504450558342772) internal successors, (16995), 6179 states have internal predecessors, (16995), 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) [2022-03-03 17:44:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6180 states to 6180 states and 16995 transitions. [2022-03-03 17:44:16,024 INFO L78 Accepts]: Start accepts. Automaton has 6180 states and 16995 transitions. Word has length 148 [2022-03-03 17:44:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:44:16,024 INFO L470 AbstractCegarLoop]: Abstraction has 6180 states and 16995 transitions. [2022-03-03 17:44:16,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 5.464788732394366) internal successors, (388), 71 states have internal predecessors, (388), 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) [2022-03-03 17:44:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 6180 states and 16995 transitions. [2022-03-03 17:44:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-03 17:44:16,033 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:44:16,033 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-03 17:44:16,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:44:16,249 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 [2022-03-03 17:44:16,249 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:44:16,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:44:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1664205362, now seen corresponding path program 8 times [2022-03-03 17:44:16,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:44:16,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469577342] [2022-03-03 17:44:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:44:16,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:44:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:44:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:17,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:44:17,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469577342] [2022-03-03 17:44:17,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469577342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:44:17,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582566976] [2022-03-03 17:44:17,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:44:17,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:44:17,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:44:17,353 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) [2022-03-03 17:44:17,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:44:17,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:44:17,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:44:17,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 86 conjunts are in the unsatisfiable core [2022-03-03 17:44:17,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:44:18,054 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 [2022-03-03 17:44:18,182 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 [2022-03-03 17:44:18,420 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 [2022-03-03 17:44:18,699 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 [2022-03-03 17:44:18,752 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 [2022-03-03 17:44:19,229 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:44:19,229 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 50 treesize of output 16 [2022-03-03 17:44:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:19,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:44:22,601 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-03-03 17:44:22,602 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 3 case distinctions, treesize of input 281 treesize of output 151 [2022-03-03 17:44:22,636 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:44:22,636 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 808 treesize of output 758 [2022-03-03 17:44:22,665 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:44:22,665 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 706 treesize of output 680 [2022-03-03 17:44:22,721 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:44:22,722 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 628 treesize of output 524 [2022-03-03 17:44:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:44:25,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582566976] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:44:25,118 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:44:25,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 35, 33] total 91 [2022-03-03 17:44:25,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069103291] [2022-03-03 17:44:25,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:44:25,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-03-03 17:44:25,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:44:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-03-03 17:44:25,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1069, Invalid=7042, Unknown=79, NotChecked=0, Total=8190 [2022-03-03 17:44:25,120 INFO L87 Difference]: Start difference. First operand 6180 states and 16995 transitions. Second operand has 91 states, 91 states have (on average 4.285714285714286) internal successors, (390), 91 states have internal predecessors, (390), 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) [2022-03-03 17:45:18,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:45:18,167 INFO L93 Difference]: Finished difference Result 45236 states and 123483 transitions. [2022-03-03 17:45:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2022-03-03 17:45:18,167 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 4.285714285714286) internal successors, (390), 91 states have internal predecessors, (390), 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 148 [2022-03-03 17:45:18,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:45:18,246 INFO L225 Difference]: With dead ends: 45236 [2022-03-03 17:45:18,246 INFO L226 Difference]: Without dead ends: 33100 [2022-03-03 17:45:18,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 253 SyntacticMatches, 52 SemanticMatches, 366 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57276 ImplicationChecksByTransitivity, 48.9s TimeCoverageRelationStatistics Valid=21049, Invalid=113761, Unknown=246, NotChecked=0, Total=135056 [2022-03-03 17:45:18,253 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 5648 mSDsluCounter, 37077 mSDsCounter, 0 mSdLazyCounter, 11982 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5648 SdHoareTripleChecker+Valid, 34218 SdHoareTripleChecker+Invalid, 16306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 11982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3899 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:45:18,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5648 Valid, 34218 Invalid, 16306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [425 Valid, 11982 Invalid, 0 Unknown, 3899 Unchecked, 5.8s Time] [2022-03-03 17:45:18,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33100 states. [2022-03-03 17:45:18,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33100 to 13747. [2022-03-03 17:45:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13747 states, 13746 states have (on average 2.815437218099811) internal successors, (38701), 13746 states have internal predecessors, (38701), 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) [2022-03-03 17:45:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13747 states to 13747 states and 38701 transitions. [2022-03-03 17:45:18,625 INFO L78 Accepts]: Start accepts. Automaton has 13747 states and 38701 transitions. Word has length 148 [2022-03-03 17:45:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:45:18,626 INFO L470 AbstractCegarLoop]: Abstraction has 13747 states and 38701 transitions. [2022-03-03 17:45:18,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 4.285714285714286) internal successors, (390), 91 states have internal predecessors, (390), 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) [2022-03-03 17:45:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 13747 states and 38701 transitions. [2022-03-03 17:45:18,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-03 17:45:18,641 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:45:18,641 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:45:18,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-03 17:45:18,855 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 [2022-03-03 17:45:18,855 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:45:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:45:18,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1120624095, now seen corresponding path program 9 times [2022-03-03 17:45:18,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:45:18,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936726553] [2022-03-03 17:45:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:45:18,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:45:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:45:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:20,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:45:20,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936726553] [2022-03-03 17:45:20,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936726553] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:45:20,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034467432] [2022-03-03 17:45:20,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:45:20,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:45:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:45:20,481 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) [2022-03-03 17:45:20,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:45:20,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:45:20,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:45:20,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 90 conjunts are in the unsatisfiable core [2022-03-03 17:45:20,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:45:21,724 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 [2022-03-03 17:45:22,072 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 [2022-03-03 17:45:22,149 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 [2022-03-03 17:45:23,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:45:23,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:45:23,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:45:23,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:45:23,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:45:23,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:45:23,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:45:23,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:45:23,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:45:23,357 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:23,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 27 [2022-03-03 17:45:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:23,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:45:25,700 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:45:25,700 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 272 treesize of output 176 [2022-03-03 17:45:25,793 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-03-03 17:45:25,793 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 1106 treesize of output 1070 [2022-03-03 17:45:25,880 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-03-03 17:45:25,880 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 950 treesize of output 950 [2022-03-03 17:45:25,975 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-03-03 17:45:25,976 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 830 treesize of output 710 [2022-03-03 17:45:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:45:37,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034467432] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:45:37,218 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:45:37,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 38, 35] total 96 [2022-03-03 17:45:37,218 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296815037] [2022-03-03 17:45:37,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:45:37,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-03-03 17:45:37,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:45:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-03-03 17:45:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1695, Invalid=7370, Unknown=55, NotChecked=0, Total=9120 [2022-03-03 17:45:37,220 INFO L87 Difference]: Start difference. First operand 13747 states and 38701 transitions. Second operand has 96 states, 96 states have (on average 4.135416666666667) internal successors, (397), 96 states have internal predecessors, (397), 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) [2022-03-03 17:46:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:01,216 INFO L93 Difference]: Finished difference Result 47990 states and 130558 transitions. [2022-03-03 17:46:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2022-03-03 17:46:01,216 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 4.135416666666667) internal successors, (397), 96 states have internal predecessors, (397), 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 151 [2022-03-03 17:46:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:01,283 INFO L225 Difference]: With dead ends: 47990 [2022-03-03 17:46:01,283 INFO L226 Difference]: Without dead ends: 36036 [2022-03-03 17:46:01,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 261 SyntacticMatches, 10 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44579 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=13500, Invalid=92380, Unknown=70, NotChecked=0, Total=105950 [2022-03-03 17:46:01,288 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 7338 mSDsluCounter, 18825 mSDsCounter, 0 mSdLazyCounter, 6329 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7338 SdHoareTripleChecker+Valid, 17129 SdHoareTripleChecker+Invalid, 10555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 6329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3900 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:01,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7338 Valid, 17129 Invalid, 10555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 6329 Invalid, 0 Unknown, 3900 Unchecked, 3.5s Time] [2022-03-03 17:46:01,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36036 states. [2022-03-03 17:46:01,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36036 to 20455. [2022-03-03 17:46:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20455 states, 20454 states have (on average 2.813435024933998) internal successors, (57546), 20454 states have internal predecessors, (57546), 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) [2022-03-03 17:46:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20455 states to 20455 states and 57546 transitions. [2022-03-03 17:46:01,749 INFO L78 Accepts]: Start accepts. Automaton has 20455 states and 57546 transitions. Word has length 151 [2022-03-03 17:46:01,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:01,749 INFO L470 AbstractCegarLoop]: Abstraction has 20455 states and 57546 transitions. [2022-03-03 17:46:01,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 4.135416666666667) internal successors, (397), 96 states have internal predecessors, (397), 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) [2022-03-03 17:46:01,749 INFO L276 IsEmpty]: Start isEmpty. Operand 20455 states and 57546 transitions. [2022-03-03 17:46:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-03 17:46:01,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:01,768 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:01,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:01,984 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,SelfDestructingSolverStorable16 [2022-03-03 17:46:01,984 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:01,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:01,985 INFO L85 PathProgramCache]: Analyzing trace with hash -165506841, now seen corresponding path program 10 times [2022-03-03 17:46:01,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:01,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615008461] [2022-03-03 17:46:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:01,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:04,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:04,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615008461] [2022-03-03 17:46:04,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615008461] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:04,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300950387] [2022-03-03 17:46:04,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:46:04,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:04,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:04,011 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) [2022-03-03 17:46:04,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:46:04,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:46:04,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:04,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-03 17:46:04,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:06,803 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-03-03 17:46:06,803 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 72 treesize of output 31 [2022-03-03 17:46:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:06,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:07,958 INFO L353 Elim1Store]: treesize reduction 168, result has 33.1 percent of original size [2022-03-03 17:46:07,959 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 108 treesize of output 114 [2022-03-03 17:46:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:10,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300950387] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:10,379 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:10,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 29, 28] total 88 [2022-03-03 17:46:10,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327869521] [2022-03-03 17:46:10,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:10,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-03-03 17:46:10,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:10,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-03-03 17:46:10,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=6975, Unknown=0, NotChecked=0, Total=7656 [2022-03-03 17:46:10,381 INFO L87 Difference]: Start difference. First operand 20455 states and 57546 transitions. Second operand has 88 states, 88 states have (on average 4.590909090909091) internal successors, (404), 88 states have internal predecessors, (404), 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) [2022-03-03 17:46:16,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:16,977 INFO L93 Difference]: Finished difference Result 32411 states and 89355 transitions. [2022-03-03 17:46:16,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-03 17:46:16,977 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 4.590909090909091) internal successors, (404), 88 states have internal predecessors, (404), 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 151 [2022-03-03 17:46:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:17,034 INFO L225 Difference]: With dead ends: 32411 [2022-03-03 17:46:17,034 INFO L226 Difference]: Without dead ends: 31665 [2022-03-03 17:46:17,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 267 SyntacticMatches, 6 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7260 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2708, Invalid=21162, Unknown=0, NotChecked=0, Total=23870 [2022-03-03 17:46:17,039 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 3752 mSDsluCounter, 10311 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 10203 SdHoareTripleChecker+Invalid, 4617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1586 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:17,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3752 Valid, 10203 Invalid, 4617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2902 Invalid, 0 Unknown, 1586 Unchecked, 1.4s Time] [2022-03-03 17:46:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31665 states. [2022-03-03 17:46:17,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31665 to 23957. [2022-03-03 17:46:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23957 states, 23956 states have (on average 2.798463850392386) internal successors, (67040), 23956 states have internal predecessors, (67040), 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) [2022-03-03 17:46:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23957 states to 23957 states and 67040 transitions. [2022-03-03 17:46:17,532 INFO L78 Accepts]: Start accepts. Automaton has 23957 states and 67040 transitions. Word has length 151 [2022-03-03 17:46:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:17,532 INFO L470 AbstractCegarLoop]: Abstraction has 23957 states and 67040 transitions. [2022-03-03 17:46:17,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 4.590909090909091) internal successors, (404), 88 states have internal predecessors, (404), 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) [2022-03-03 17:46:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand 23957 states and 67040 transitions. [2022-03-03 17:46:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-03 17:46:17,553 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:17,553 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:17,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:17,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-03 17:46:17,770 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:17,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:17,771 INFO L85 PathProgramCache]: Analyzing trace with hash 409869845, now seen corresponding path program 11 times [2022-03-03 17:46:17,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:17,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372002643] [2022-03-03 17:46:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:17,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:18,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:18,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372002643] [2022-03-03 17:46:18,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372002643] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:18,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313259289] [2022-03-03 17:46:18,876 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:46:18,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:18,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:18,878 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) [2022-03-03 17:46:18,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:46:18,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:46:18,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:18,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-03 17:46:18,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:19,638 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-03-03 17:46:19,639 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 73 treesize of output 21 [2022-03-03 17:46:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:19,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:20,201 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-03-03 17:46:20,202 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 110 treesize of output 152 [2022-03-03 17:46:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:20,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313259289] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:20,682 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:20,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 13, 12] total 48 [2022-03-03 17:46:20,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336818953] [2022-03-03 17:46:20,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:20,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-03 17:46:20,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-03 17:46:20,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1979, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:46:20,684 INFO L87 Difference]: Start difference. First operand 23957 states and 67040 transitions. Second operand has 48 states, 48 states have (on average 7.604166666666667) internal successors, (365), 48 states have internal predecessors, (365), 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) [2022-03-03 17:46:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:30,186 INFO L93 Difference]: Finished difference Result 71374 states and 196768 transitions. [2022-03-03 17:46:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2022-03-03 17:46:30,186 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.604166666666667) internal successors, (365), 48 states have internal predecessors, (365), 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 151 [2022-03-03 17:46:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:30,303 INFO L225 Difference]: With dead ends: 71374 [2022-03-03 17:46:30,303 INFO L226 Difference]: Without dead ends: 50530 [2022-03-03 17:46:30,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17511 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3960, Invalid=42050, Unknown=0, NotChecked=0, Total=46010 [2022-03-03 17:46:30,306 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 3159 mSDsluCounter, 11397 mSDsCounter, 0 mSdLazyCounter, 4474 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3159 SdHoareTripleChecker+Valid, 11041 SdHoareTripleChecker+Invalid, 4678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 4474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:30,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3159 Valid, 11041 Invalid, 4678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 4474 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-03 17:46:30,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50530 states. [2022-03-03 17:46:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50530 to 18757. [2022-03-03 17:46:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18757 states, 18756 states have (on average 2.779910428662828) internal successors, (52140), 18756 states have internal predecessors, (52140), 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) [2022-03-03 17:46:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18757 states to 18757 states and 52140 transitions. [2022-03-03 17:46:30,873 INFO L78 Accepts]: Start accepts. Automaton has 18757 states and 52140 transitions. Word has length 151 [2022-03-03 17:46:30,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:30,873 INFO L470 AbstractCegarLoop]: Abstraction has 18757 states and 52140 transitions. [2022-03-03 17:46:30,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.604166666666667) internal successors, (365), 48 states have internal predecessors, (365), 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) [2022-03-03 17:46:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 18757 states and 52140 transitions. [2022-03-03 17:46:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-03 17:46:30,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:30,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:30,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:31,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:31,099 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:31,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:31,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1571541419, now seen corresponding path program 12 times [2022-03-03 17:46:31,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:31,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069988192] [2022-03-03 17:46:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:31,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:32,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:32,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069988192] [2022-03-03 17:46:32,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069988192] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:32,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270136873] [2022-03-03 17:46:32,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:46:32,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:32,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:32,571 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) [2022-03-03 17:46:32,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:46:32,680 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 17:46:32,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:32,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-03 17:46:32,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:33,440 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-03-03 17:46:33,441 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 70 treesize of output 18 [2022-03-03 17:46:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 60 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:46:33,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:33,877 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-03-03 17:46:33,877 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 110 treesize of output 152 [2022-03-03 17:46:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:34,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270136873] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:34,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:34,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17, 12] total 54 [2022-03-03 17:46:34,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420610008] [2022-03-03 17:46:34,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:34,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-03 17:46:34,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:34,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-03 17:46:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2578, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:46:34,329 INFO L87 Difference]: Start difference. First operand 18757 states and 52140 transitions. Second operand has 54 states, 54 states have (on average 7.111111111111111) internal successors, (384), 54 states have internal predecessors, (384), 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) [2022-03-03 17:46:40,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:40,065 INFO L93 Difference]: Finished difference Result 38230 states and 104459 transitions. [2022-03-03 17:46:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-03 17:46:40,065 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.111111111111111) internal successors, (384), 54 states have internal predecessors, (384), 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 151 [2022-03-03 17:46:40,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:40,122 INFO L225 Difference]: With dead ends: 38230 [2022-03-03 17:46:40,122 INFO L226 Difference]: Without dead ends: 31807 [2022-03-03 17:46:40,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6807 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1919, Invalid=19251, Unknown=0, NotChecked=0, Total=21170 [2022-03-03 17:46:40,124 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 3497 mSDsluCounter, 9223 mSDsCounter, 0 mSdLazyCounter, 3510 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3497 SdHoareTripleChecker+Valid, 9078 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:40,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3497 Valid, 9078 Invalid, 3690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3510 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-03 17:46:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31807 states. [2022-03-03 17:46:40,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31807 to 20245. [2022-03-03 17:46:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20245 states, 20244 states have (on average 2.7852203121912664) internal successors, (56384), 20244 states have internal predecessors, (56384), 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) [2022-03-03 17:46:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20245 states to 20245 states and 56384 transitions. [2022-03-03 17:46:40,559 INFO L78 Accepts]: Start accepts. Automaton has 20245 states and 56384 transitions. Word has length 151 [2022-03-03 17:46:40,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:40,575 INFO L470 AbstractCegarLoop]: Abstraction has 20245 states and 56384 transitions. [2022-03-03 17:46:40,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.111111111111111) internal successors, (384), 54 states have internal predecessors, (384), 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) [2022-03-03 17:46:40,575 INFO L276 IsEmpty]: Start isEmpty. Operand 20245 states and 56384 transitions. [2022-03-03 17:46:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-03 17:46:40,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:40,588 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:40,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:40,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:40,803 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash -233771259, now seen corresponding path program 13 times [2022-03-03 17:46:40,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:40,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374523391] [2022-03-03 17:46:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:40,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:41,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:41,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374523391] [2022-03-03 17:46:41,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374523391] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:41,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434751430] [2022-03-03 17:46:41,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:46:41,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:41,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:41,013 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) [2022-03-03 17:46:41,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:46:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:41,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 73 conjunts are in the unsatisfiable core [2022-03-03 17:46:41,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:42,966 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-03-03 17:46:42,966 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 68 treesize of output 27 [2022-03-03 17:46:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:43,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:43,665 INFO L353 Elim1Store]: treesize reduction 142, result has 43.4 percent of original size [2022-03-03 17:46:43,666 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 108 treesize of output 140 [2022-03-03 17:46:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:45,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434751430] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:46:45,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:46:45,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 29, 28] total 59 [2022-03-03 17:46:45,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632857281] [2022-03-03 17:46:45,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:46:45,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-03 17:46:45,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:46:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-03 17:46:45,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=2992, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 17:46:45,863 INFO L87 Difference]: Start difference. First operand 20245 states and 56384 transitions. Second operand has 59 states, 59 states have (on average 6.4576271186440675) internal successors, (381), 59 states have internal predecessors, (381), 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) [2022-03-03 17:46:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:46:48,167 INFO L93 Difference]: Finished difference Result 25310 states and 69862 transitions. [2022-03-03 17:46:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-03 17:46:48,167 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.4576271186440675) internal successors, (381), 59 states have internal predecessors, (381), 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 151 [2022-03-03 17:46:48,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:46:48,213 INFO L225 Difference]: With dead ends: 25310 [2022-03-03 17:46:48,213 INFO L226 Difference]: Without dead ends: 24696 [2022-03-03 17:46:48,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 267 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2660 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1387, Invalid=8713, Unknown=0, NotChecked=0, Total=10100 [2022-03-03 17:46:48,224 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1837 mSDsluCounter, 5207 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 5289 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:46:48,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1837 Valid, 5289 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1093 Invalid, 0 Unknown, 316 Unchecked, 0.4s Time] [2022-03-03 17:46:48,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24696 states. [2022-03-03 17:46:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24696 to 20965. [2022-03-03 17:46:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20965 states, 20964 states have (on average 2.781577943140622) internal successors, (58313), 20964 states have internal predecessors, (58313), 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) [2022-03-03 17:46:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20965 states to 20965 states and 58313 transitions. [2022-03-03 17:46:48,534 INFO L78 Accepts]: Start accepts. Automaton has 20965 states and 58313 transitions. Word has length 151 [2022-03-03 17:46:48,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:46:48,535 INFO L470 AbstractCegarLoop]: Abstraction has 20965 states and 58313 transitions. [2022-03-03 17:46:48,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.4576271186440675) internal successors, (381), 59 states have internal predecessors, (381), 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) [2022-03-03 17:46:48,535 INFO L276 IsEmpty]: Start isEmpty. Operand 20965 states and 58313 transitions. [2022-03-03 17:46:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-03 17:46:48,562 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:46:48,562 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:46:48,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:46:48,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:48,778 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:46:48,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:46:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash 532271767, now seen corresponding path program 14 times [2022-03-03 17:46:48,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:46:48,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125530133] [2022-03-03 17:46:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:46:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:46:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:46:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:46:49,000 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:46:49,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125530133] [2022-03-03 17:46:49,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125530133] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:46:49,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240353071] [2022-03-03 17:46:49,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:46:49,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:46:49,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:46:49,009 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:46:49,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:46:49,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:46:49,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:46:49,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 95 conjunts are in the unsatisfiable core [2022-03-03 17:46:49,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:46:49,651 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 [2022-03-03 17:46:49,821 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 [2022-03-03 17:46:49,973 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 [2022-03-03 17:46:50,210 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 [2022-03-03 17:46:50,266 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 [2022-03-03 17:46:50,859 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-03-03 17:46:50,859 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 73 treesize of output 21 [2022-03-03 17:46:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:46:50,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:46:54,282 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-03-03 17:46:54,282 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 3 case distinctions, treesize of input 416 treesize of output 202 [2022-03-03 17:46:54,361 INFO L353 Elim1Store]: treesize reduction 154, result has 41.0 percent of original size [2022-03-03 17:46:54,362 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 528 treesize of output 556 [2022-03-03 17:46:54,439 INFO L353 Elim1Store]: treesize reduction 154, result has 41.0 percent of original size [2022-03-03 17:46:54,439 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 450 treesize of output 436 [2022-03-03 17:46:54,517 INFO L353 Elim1Store]: treesize reduction 154, result has 41.0 percent of original size [2022-03-03 17:46:54,517 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 330 treesize of output 376 [2022-03-03 17:47:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:04,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240353071] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:04,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:04,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 38, 36] total 76 [2022-03-03 17:47:04,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865870198] [2022-03-03 17:47:04,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:04,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-03-03 17:47:04,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:04,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-03-03 17:47:04,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1038, Invalid=4578, Unknown=84, NotChecked=0, Total=5700 [2022-03-03 17:47:04,633 INFO L87 Difference]: Start difference. First operand 20965 states and 58313 transitions. Second operand has 76 states, 76 states have (on average 5.131578947368421) internal successors, (390), 76 states have internal predecessors, (390), 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) [2022-03-03 17:47:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:13,667 INFO L93 Difference]: Finished difference Result 44135 states and 121614 transitions. [2022-03-03 17:47:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-03-03 17:47:13,667 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 5.131578947368421) internal successors, (390), 76 states have internal predecessors, (390), 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 151 [2022-03-03 17:47:13,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:13,738 INFO L225 Difference]: With dead ends: 44135 [2022-03-03 17:47:13,738 INFO L226 Difference]: Without dead ends: 39110 [2022-03-03 17:47:13,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 237 SyntacticMatches, 7 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12846 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4133, Invalid=30565, Unknown=84, NotChecked=0, Total=34782 [2022-03-03 17:47:13,741 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 3670 mSDsluCounter, 8563 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3670 SdHoareTripleChecker+Valid, 8419 SdHoareTripleChecker+Invalid, 5203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2359 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:13,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3670 Valid, 8419 Invalid, 5203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2620 Invalid, 0 Unknown, 2359 Unchecked, 1.4s Time] [2022-03-03 17:47:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39110 states. [2022-03-03 17:47:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39110 to 20665. [2022-03-03 17:47:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20665 states, 20664 states have (on average 2.778697251258227) internal successors, (57419), 20664 states have internal predecessors, (57419), 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) [2022-03-03 17:47:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20665 states to 20665 states and 57419 transitions. [2022-03-03 17:47:14,131 INFO L78 Accepts]: Start accepts. Automaton has 20665 states and 57419 transitions. Word has length 151 [2022-03-03 17:47:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:14,131 INFO L470 AbstractCegarLoop]: Abstraction has 20665 states and 57419 transitions. [2022-03-03 17:47:14,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 5.131578947368421) internal successors, (390), 76 states have internal predecessors, (390), 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) [2022-03-03 17:47:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 20665 states and 57419 transitions. [2022-03-03 17:47:14,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-03 17:47:14,144 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:14,144 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:14,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:14,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-03 17:47:14,361 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:14,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:14,361 INFO L85 PathProgramCache]: Analyzing trace with hash 42761981, now seen corresponding path program 15 times [2022-03-03 17:47:14,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:14,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773646815] [2022-03-03 17:47:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:14,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:47:14,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:14,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773646815] [2022-03-03 17:47:14,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773646815] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:14,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927195377] [2022-03-03 17:47:14,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:47:14,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:14,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:14,568 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:14,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:47:14,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:47:14,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:14,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-03 17:47:14,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:16,185 INFO L353 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2022-03-03 17:47:16,185 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 24 [2022-03-03 17:47:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:16,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:19,249 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-03-03 17:47:19,250 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 106 treesize of output 152 [2022-03-03 17:47:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:21,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927195377] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:21,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:21,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22, 22] total 45 [2022-03-03 17:47:21,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380820876] [2022-03-03 17:47:21,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:21,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 17:47:21,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:21,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 17:47:21,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1661, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:47:21,072 INFO L87 Difference]: Start difference. First operand 20665 states and 57419 transitions. Second operand has 45 states, 45 states have (on average 8.422222222222222) internal successors, (379), 45 states have internal predecessors, (379), 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) [2022-03-03 17:47:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:22,632 INFO L93 Difference]: Finished difference Result 37129 states and 101905 transitions. [2022-03-03 17:47:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 17:47:22,632 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.422222222222222) internal successors, (379), 45 states have internal predecessors, (379), 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 151 [2022-03-03 17:47:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:22,699 INFO L225 Difference]: With dead ends: 37129 [2022-03-03 17:47:22,700 INFO L226 Difference]: Without dead ends: 35445 [2022-03-03 17:47:22,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 276 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1074, Invalid=5732, Unknown=0, NotChecked=0, Total=6806 [2022-03-03 17:47:22,701 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 2030 mSDsluCounter, 4291 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 741 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:22,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2030 Valid, 4322 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1011 Invalid, 0 Unknown, 741 Unchecked, 0.4s Time] [2022-03-03 17:47:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35445 states. [2022-03-03 17:47:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35445 to 23137. [2022-03-03 17:47:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23137 states, 23136 states have (on average 2.77597683264177) internal successors, (64225), 23136 states have internal predecessors, (64225), 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) [2022-03-03 17:47:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23137 states to 23137 states and 64225 transitions. [2022-03-03 17:47:23,190 INFO L78 Accepts]: Start accepts. Automaton has 23137 states and 64225 transitions. Word has length 151 [2022-03-03 17:47:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:23,190 INFO L470 AbstractCegarLoop]: Abstraction has 23137 states and 64225 transitions. [2022-03-03 17:47:23,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.422222222222222) internal successors, (379), 45 states have internal predecessors, (379), 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) [2022-03-03 17:47:23,190 INFO L276 IsEmpty]: Start isEmpty. Operand 23137 states and 64225 transitions. [2022-03-03 17:47:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-03-03 17:47:23,211 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:23,211 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:47:23,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:23,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:23,430 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1976097762, now seen corresponding path program 16 times [2022-03-03 17:47:23,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:23,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60616326] [2022-03-03 17:47:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:23,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-03-03 17:47:23,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:23,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60616326] [2022-03-03 17:47:23,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60616326] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:23,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639210773] [2022-03-03 17:47:23,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:47:23,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:23,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:23,532 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:23,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:47:23,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:47:23,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:23,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 17:47:23,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-03 17:47:23,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:47:24,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639210773] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:24,122 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:24,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 11] total 18 [2022-03-03 17:47:24,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786418860] [2022-03-03 17:47:24,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:24,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 17:47:24,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 17:47:24,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=185, Unknown=0, NotChecked=0, Total=306 [2022-03-03 17:47:24,124 INFO L87 Difference]: Start difference. First operand 23137 states and 64225 transitions. Second operand has 18 states, 18 states have (on average 14.11111111111111) internal successors, (254), 18 states have internal predecessors, (254), 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) [2022-03-03 17:47:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:24,369 INFO L93 Difference]: Finished difference Result 49564 states and 137681 transitions. [2022-03-03 17:47:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 17:47:24,370 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.11111111111111) internal successors, (254), 18 states have internal predecessors, (254), 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 [2022-03-03 17:47:24,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:24,465 INFO L225 Difference]: With dead ends: 49564 [2022-03-03 17:47:24,465 INFO L226 Difference]: Without dead ends: 49180 [2022-03-03 17:47:24,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=209, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:47:24,466 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 817 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:24,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 606 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:47:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49180 states. [2022-03-03 17:47:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49180 to 38375. [2022-03-03 17:47:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38375 states, 38374 states have (on average 2.812868087767759) internal successors, (107941), 38374 states have internal predecessors, (107941), 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) [2022-03-03 17:47:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38375 states to 38375 states and 107941 transitions. [2022-03-03 17:47:25,261 INFO L78 Accepts]: Start accepts. Automaton has 38375 states and 107941 transitions. Word has length 160 [2022-03-03 17:47:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:25,261 INFO L470 AbstractCegarLoop]: Abstraction has 38375 states and 107941 transitions. [2022-03-03 17:47:25,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.11111111111111) internal successors, (254), 18 states have internal predecessors, (254), 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) [2022-03-03 17:47:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 38375 states and 107941 transitions. [2022-03-03 17:47:25,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-03-03 17:47:25,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:25,283 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-03 17:47:25,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-03-03 17:47:25,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:25,490 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:25,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:25,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1374002067, now seen corresponding path program 17 times [2022-03-03 17:47:25,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:25,671 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960432946] [2022-03-03 17:47:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:25,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 43 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:47:25,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:25,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960432946] [2022-03-03 17:47:25,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960432946] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:25,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810595605] [2022-03-03 17:47:25,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:47:25,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:25,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:25,893 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:25,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:47:26,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:47:26,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:26,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 17:47:26,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 46 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 17:47:26,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 43 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 17:47:27,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810595605] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:27,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:27,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2022-03-03 17:47:27,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824006634] [2022-03-03 17:47:27,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:27,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-03 17:47:27,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:27,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-03 17:47:27,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2271, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:47:27,416 INFO L87 Difference]: Start difference. First operand 38375 states and 107941 transitions. Second operand has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 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) [2022-03-03 17:47:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:29,807 INFO L93 Difference]: Finished difference Result 16804 states and 46252 transitions. [2022-03-03 17:47:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:47:29,808 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 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 162 [2022-03-03 17:47:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:29,830 INFO L225 Difference]: With dead ends: 16804 [2022-03-03 17:47:29,830 INFO L226 Difference]: Without dead ends: 14042 [2022-03-03 17:47:29,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2129 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2234, Invalid=8068, Unknown=0, NotChecked=0, Total=10302 [2022-03-03 17:47:29,831 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 1275 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 3962 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:29,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 3962 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:47:29,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14042 states. [2022-03-03 17:47:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14042 to 14037. [2022-03-03 17:47:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14037 states, 14036 states have (on average 2.80143915645483) internal successors, (39321), 14036 states have internal predecessors, (39321), 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) [2022-03-03 17:47:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14037 states to 14037 states and 39321 transitions. [2022-03-03 17:47:30,050 INFO L78 Accepts]: Start accepts. Automaton has 14037 states and 39321 transitions. Word has length 162 [2022-03-03 17:47:30,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:30,051 INFO L470 AbstractCegarLoop]: Abstraction has 14037 states and 39321 transitions. [2022-03-03 17:47:30,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 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) [2022-03-03 17:47:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand 14037 states and 39321 transitions. [2022-03-03 17:47:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-03-03 17:47:30,060 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:30,061 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-03-03 17:47:30,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:30,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:30,277 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:30,278 INFO L85 PathProgramCache]: Analyzing trace with hash 667790564, now seen corresponding path program 18 times [2022-03-03 17:47:30,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:30,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2341740] [2022-03-03 17:47:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:30,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:47:30,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:30,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2341740] [2022-03-03 17:47:30,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2341740] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:30,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513643942] [2022-03-03 17:47:30,454 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:47:30,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:30,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:30,455 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:30,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:47:30,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:47:30,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:30,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-03 17:47:30,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:32,380 INFO L353 Elim1Store]: treesize reduction 100, result has 2.9 percent of original size [2022-03-03 17:47:32,380 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 70 treesize of output 21 [2022-03-03 17:47:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:32,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:33,027 INFO L353 Elim1Store]: treesize reduction 135, result has 47.3 percent of original size [2022-03-03 17:47:33,029 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 107 treesize of output 150 [2022-03-03 17:47:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:35,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513643942] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:35,438 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:35,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 31, 31] total 63 [2022-03-03 17:47:35,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885701228] [2022-03-03 17:47:35,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:35,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-03 17:47:35,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-03 17:47:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=3362, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 17:47:35,440 INFO L87 Difference]: Start difference. First operand 14037 states and 39321 transitions. Second operand has 63 states, 63 states have (on average 6.682539682539683) internal successors, (421), 63 states have internal predecessors, (421), 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) [2022-03-03 17:47:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:41,501 INFO L93 Difference]: Finished difference Result 78334 states and 218213 transitions. [2022-03-03 17:47:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-03 17:47:41,501 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 6.682539682539683) internal successors, (421), 63 states have internal predecessors, (421), 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 169 [2022-03-03 17:47:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:41,665 INFO L225 Difference]: With dead ends: 78334 [2022-03-03 17:47:41,665 INFO L226 Difference]: Without dead ends: 75267 [2022-03-03 17:47:41,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 303 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9049 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3029, Invalid=23053, Unknown=0, NotChecked=0, Total=26082 [2022-03-03 17:47:41,667 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 3251 mSDsluCounter, 11154 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 10961 SdHoareTripleChecker+Invalid, 4387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1470 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:41,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3251 Valid, 10961 Invalid, 4387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2705 Invalid, 0 Unknown, 1470 Unchecked, 1.3s Time] [2022-03-03 17:47:41,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75267 states. [2022-03-03 17:47:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75267 to 34840. [2022-03-03 17:47:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34840 states, 34839 states have (on average 2.837796722064353) internal successors, (98866), 34839 states have internal predecessors, (98866), 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) [2022-03-03 17:47:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34840 states to 34840 states and 98866 transitions. [2022-03-03 17:47:42,715 INFO L78 Accepts]: Start accepts. Automaton has 34840 states and 98866 transitions. Word has length 169 [2022-03-03 17:47:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:42,716 INFO L470 AbstractCegarLoop]: Abstraction has 34840 states and 98866 transitions. [2022-03-03 17:47:42,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 6.682539682539683) internal successors, (421), 63 states have internal predecessors, (421), 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) [2022-03-03 17:47:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 34840 states and 98866 transitions. [2022-03-03 17:47:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-03-03 17:47:42,739 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:42,739 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-03-03 17:47:42,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-03-03 17:47:42,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-03 17:47:42,949 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:42,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1433833590, now seen corresponding path program 19 times [2022-03-03 17:47:42,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:42,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873691293] [2022-03-03 17:47:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:42,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:44,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:44,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873691293] [2022-03-03 17:47:44,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873691293] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:44,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251577830] [2022-03-03 17:47:44,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:47:44,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:44,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:44,380 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:44,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:47:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:44,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 78 conjunts are in the unsatisfiable core [2022-03-03 17:47:44,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:47,258 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-03-03 17:47:47,259 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 68 treesize of output 27 [2022-03-03 17:47:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 43 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:47,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:47:48,287 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-03-03 17:47:48,288 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 108 treesize of output 152 [2022-03-03 17:47:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:51,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251577830] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:47:51,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:47:51,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 30] total 81 [2022-03-03 17:47:51,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461563939] [2022-03-03 17:47:51,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:47:51,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-03 17:47:51,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:47:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-03 17:47:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=801, Invalid=5679, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 17:47:51,087 INFO L87 Difference]: Start difference. First operand 34840 states and 98866 transitions. Second operand has 81 states, 81 states have (on average 5.395061728395062) internal successors, (437), 81 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) [2022-03-03 17:47:54,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:47:54,497 INFO L93 Difference]: Finished difference Result 44689 states and 125614 transitions. [2022-03-03 17:47:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 17:47:54,497 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 5.395061728395062) internal successors, (437), 81 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 169 [2022-03-03 17:47:54,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:47:54,581 INFO L225 Difference]: With dead ends: 44689 [2022-03-03 17:47:54,581 INFO L226 Difference]: Without dead ends: 44573 [2022-03-03 17:47:54,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 290 SyntacticMatches, 7 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4995 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1957, Invalid=14555, Unknown=0, NotChecked=0, Total=16512 [2022-03-03 17:47:54,583 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1573 mSDsluCounter, 6241 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 6286 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:47:54,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 6286 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1644 Invalid, 0 Unknown, 307 Unchecked, 0.6s Time] [2022-03-03 17:47:54,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44573 states. [2022-03-03 17:47:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44573 to 37211. [2022-03-03 17:47:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37211 states, 37210 states have (on average 2.835366836871809) internal successors, (105504), 37210 states have internal predecessors, (105504), 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) [2022-03-03 17:47:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37211 states to 37211 states and 105504 transitions. [2022-03-03 17:47:55,332 INFO L78 Accepts]: Start accepts. Automaton has 37211 states and 105504 transitions. Word has length 169 [2022-03-03 17:47:55,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:47:55,333 INFO L470 AbstractCegarLoop]: Abstraction has 37211 states and 105504 transitions. [2022-03-03 17:47:55,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 5.395061728395062) internal successors, (437), 81 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) [2022-03-03 17:47:55,333 INFO L276 IsEmpty]: Start isEmpty. Operand 37211 states and 105504 transitions. [2022-03-03 17:47:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-03-03 17:47:55,360 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:47:55,360 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-03-03 17:47:55,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:47:55,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-03 17:47:55,568 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:47:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:47:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1355567116, now seen corresponding path program 20 times [2022-03-03 17:47:55,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:47:55,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565907711] [2022-03-03 17:47:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:47:55,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:47:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:47:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:56,374 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:47:56,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565907711] [2022-03-03 17:47:56,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565907711] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:47:56,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010146781] [2022-03-03 17:47:56,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:47:56,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:47:56,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:47:56,375 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:47:56,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:47:56,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:47:56,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:47:56,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 99 conjunts are in the unsatisfiable core [2022-03-03 17:47:56,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:47:57,286 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 [2022-03-03 17:47:57,513 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 [2022-03-03 17:47:57,878 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 [2022-03-03 17:47:58,245 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 [2022-03-03 17:47:58,381 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 [2022-03-03 17:47:59,838 INFO L353 Elim1Store]: treesize reduction 100, result has 2.9 percent of original size [2022-03-03 17:47:59,839 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 73 treesize of output 24 [2022-03-03 17:47:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:47:59,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:07,636 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-03-03 17:48:07,636 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 3 case distinctions, treesize of input 413 treesize of output 199 [2022-03-03 17:48:07,716 INFO L353 Elim1Store]: treesize reduction 135, result has 47.3 percent of original size [2022-03-03 17:48:07,716 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 1084 treesize of output 1050 [2022-03-03 17:48:07,794 INFO L353 Elim1Store]: treesize reduction 135, result has 47.3 percent of original size [2022-03-03 17:48:07,795 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 930 treesize of output 932 [2022-03-03 17:48:07,897 INFO L353 Elim1Store]: treesize reduction 135, result has 47.3 percent of original size [2022-03-03 17:48:07,897 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 812 treesize of output 696 [2022-03-03 17:48:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 14 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:24,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010146781] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:24,163 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:24,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 43, 41] total 107 [2022-03-03 17:48:24,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019388318] [2022-03-03 17:48:24,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:24,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-03-03 17:48:24,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:24,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-03-03 17:48:24,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1190, Invalid=10072, Unknown=80, NotChecked=0, Total=11342 [2022-03-03 17:48:24,165 INFO L87 Difference]: Start difference. First operand 37211 states and 105504 transitions. Second operand has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 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) [2022-03-03 17:48:30,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:30,592 INFO L93 Difference]: Finished difference Result 63897 states and 180104 transitions. [2022-03-03 17:48:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-03 17:48:30,592 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 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 169 [2022-03-03 17:48:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:30,719 INFO L225 Difference]: With dead ends: 63897 [2022-03-03 17:48:30,719 INFO L226 Difference]: Without dead ends: 62897 [2022-03-03 17:48:30,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 266 SyntacticMatches, 7 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8818 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3067, Invalid=23259, Unknown=80, NotChecked=0, Total=26406 [2022-03-03 17:48:30,721 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 2797 mSDsluCounter, 9852 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2797 SdHoareTripleChecker+Valid, 9641 SdHoareTripleChecker+Invalid, 5671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3152 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:30,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2797 Valid, 9641 Invalid, 5671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2386 Invalid, 0 Unknown, 3152 Unchecked, 1.1s Time] [2022-03-03 17:48:30,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62897 states. [2022-03-03 17:48:31,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62897 to 37409. [2022-03-03 17:48:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37409 states, 37408 states have (on average 2.8338323353293413) internal successors, (106008), 37408 states have internal predecessors, (106008), 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) [2022-03-03 17:48:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37409 states to 37409 states and 106008 transitions. [2022-03-03 17:48:31,624 INFO L78 Accepts]: Start accepts. Automaton has 37409 states and 106008 transitions. Word has length 169 [2022-03-03 17:48:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:31,627 INFO L470 AbstractCegarLoop]: Abstraction has 37409 states and 106008 transitions. [2022-03-03 17:48:31,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 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) [2022-03-03 17:48:31,627 INFO L276 IsEmpty]: Start isEmpty. Operand 37409 states and 106008 transitions. [2022-03-03 17:48:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-03-03 17:48:31,652 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:31,652 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-03-03 17:48:31,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 17:48:31,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-03 17:48:31,869 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1740400616, now seen corresponding path program 21 times [2022-03-03 17:48:31,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:31,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92320014] [2022-03-03 17:48:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:31,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:33,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:33,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92320014] [2022-03-03 17:48:33,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92320014] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:33,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467637575] [2022-03-03 17:48:33,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:48:33,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:33,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:33,857 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:48:33,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:48:34,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:48:34,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:34,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-03 17:48:34,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:35,087 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-03-03 17:48:35,088 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 77 treesize of output 25 [2022-03-03 17:48:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-03 17:48:35,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:48:35,790 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-03-03 17:48:35,791 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 110 treesize of output 152 [2022-03-03 17:48:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:48:36,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467637575] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:48:36,508 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:48:36,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 17, 12] total 57 [2022-03-03 17:48:36,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663237851] [2022-03-03 17:48:36,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:48:36,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-03 17:48:36,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:48:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-03 17:48:36,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2961, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:48:36,509 INFO L87 Difference]: Start difference. First operand 37409 states and 106008 transitions. Second operand has 57 states, 57 states have (on average 7.4035087719298245) internal successors, (422), 57 states have internal predecessors, (422), 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) [2022-03-03 17:48:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:48:49,436 INFO L93 Difference]: Finished difference Result 84708 states and 239991 transitions. [2022-03-03 17:48:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-03 17:48:49,436 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 7.4035087719298245) internal successors, (422), 57 states have internal predecessors, (422), 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 169 [2022-03-03 17:48:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:48:49,625 INFO L225 Difference]: With dead ends: 84708 [2022-03-03 17:48:49,626 INFO L226 Difference]: Without dead ends: 69076 [2022-03-03 17:48:49,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11622 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=3316, Invalid=31094, Unknown=0, NotChecked=0, Total=34410 [2022-03-03 17:48:49,634 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 2704 mSDsluCounter, 16570 mSDsCounter, 0 mSdLazyCounter, 6649 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 15956 SdHoareTripleChecker+Invalid, 6879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 6649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:48:49,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2704 Valid, 15956 Invalid, 6879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 6649 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-03 17:48:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69076 states. [2022-03-03 17:48:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69076 to 35666. [2022-03-03 17:48:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35666 states, 35665 states have (on average 2.8460114958642926) internal successors, (101503), 35665 states have internal predecessors, (101503), 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) [2022-03-03 17:48:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35666 states to 35666 states and 101503 transitions. [2022-03-03 17:48:50,646 INFO L78 Accepts]: Start accepts. Automaton has 35666 states and 101503 transitions. Word has length 169 [2022-03-03 17:48:50,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:48:50,646 INFO L470 AbstractCegarLoop]: Abstraction has 35666 states and 101503 transitions. [2022-03-03 17:48:50,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.4035087719298245) internal successors, (422), 57 states have internal predecessors, (422), 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) [2022-03-03 17:48:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 35666 states and 101503 transitions. [2022-03-03 17:48:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-03 17:48:50,669 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:48:50,669 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-03 17:48:50,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 17:48:50,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:50,884 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:48:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:48:50,884 INFO L85 PathProgramCache]: Analyzing trace with hash 82764299, now seen corresponding path program 22 times [2022-03-03 17:48:50,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:48:50,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647930074] [2022-03-03 17:48:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:48:50,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:48:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:48:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-03-03 17:48:51,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:48:51,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647930074] [2022-03-03 17:48:51,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647930074] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:48:51,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857603667] [2022-03-03 17:48:51,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:48:51,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:48:51,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:48:51,216 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:48:51,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:48:51,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:48:51,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:48:51,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 106 conjunts are in the unsatisfiable core [2022-03-03 17:48:51,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:48:52,496 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 [2022-03-03 17:48:52,677 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 [2022-03-03 17:48:52,980 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 [2022-03-03 17:48:53,304 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 [2022-03-03 17:48:53,380 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 [2022-03-03 17:48:55,053 INFO L353 Elim1Store]: treesize reduction 345, result has 2.8 percent of original size [2022-03-03 17:48:55,054 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 95 treesize of output 36 [2022-03-03 17:48:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:48:55,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:12,520 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-03-03 17:49:12,521 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 3 case distinctions, treesize of input 550 treesize of output 252 [2022-03-03 17:49:12,647 INFO L353 Elim1Store]: treesize reduction 331, result has 29.6 percent of original size [2022-03-03 17:49:12,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 668 treesize of output 704 [2022-03-03 17:49:12,777 INFO L353 Elim1Store]: treesize reduction 331, result has 29.6 percent of original size [2022-03-03 17:49:12,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 566 treesize of output 548 [2022-03-03 17:49:12,915 INFO L353 Elim1Store]: treesize reduction 331, result has 29.6 percent of original size [2022-03-03 17:49:12,915 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 410 treesize of output 470 [2022-03-03 17:49:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:38,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857603667] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:38,650 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:38,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 41, 39] total 84 [2022-03-03 17:49:38,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465350174] [2022-03-03 17:49:38,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:38,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-03 17:49:38,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:38,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-03 17:49:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=816, Invalid=6076, Unknown=80, NotChecked=0, Total=6972 [2022-03-03 17:49:38,653 INFO L87 Difference]: Start difference. First operand 35666 states and 101503 transitions. Second operand has 84 states, 84 states have (on average 5.25) internal successors, (441), 84 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:44,820 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse50 (* c_~front~0 4)) (.cse49 (select |c_#memory_int| c_~queue~0.base)) (.cse53 (* c_~back~0 4))) (let ((.cse17 (< (+ |c_ULTIMATE.start_create_fresh_int_array_~i~0#1| 1) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse54 (select .cse49 (+ c_~queue~0.offset .cse53))) (.cse56 (select .cse49 (+ c_~queue~0.offset .cse50 8))) (.cse57 (select .cse49 (+ c_~queue~0.offset .cse50))) (.cse58 (select .cse49 (+ c_~queue~0.offset .cse50 4)))) (let ((.cse14 (let ((.cse59 (+ c_~sum~0 .cse56 .cse57 .cse58))) (and (not (< 1 .cse59)) (not (< .cse59 0))))) (.cse7 (not (= .cse54 1))) (.cse21 (< (+ 2 |c_ULTIMATE.start_create_fresh_int_array_#t~post19#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse6 (let ((.cse55 (+ c_~sum~0 .cse56 .cse57 .cse58 (select .cse49 (+ c_~queue~0.offset .cse50 12))))) (and (not (< 1 .cse55)) (not (< .cse55 0))))) (.cse15 (not (= (+ .cse54 1) 0))) (.cse32 (< (+ 3 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse16 (let ((.cse52 (<= c_~n~0 (+ 3 c_~front~0))) (.cse51 (<= c_~n~0 (+ c_~back~0 3)))) (and (or (<= c_~n~0 (+ c_~front~0 4)) .cse51) (or .cse52 (<= 0 c_~sum~0) .cse51) (or .cse52 (= .cse50 .cse53) .cse51) (or (not (< 1 c_~sum~0)) .cse52 .cse51)))) (.cse37 (not .cse17)) (.cse4 (< c_~front~0 0)) (.cse33 (< (+ 2 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse0 (select .cse49 (+ c_~queue~0.offset .cse50 (- 8))))) (and (= .cse0 1) (or (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int) (v_ArrVal_850 (Array Int Int)) (v_ArrVal_851 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_851) c_~queue~0.base))) (or (let ((.cse1 (let ((.cse3 (* c_~front~0 4))) (+ c_~sum~0 (select .cse2 (+ c_~queue~0.offset .cse3 12)) (select .cse2 (+ c_~queue~0.offset .cse3 4)) (select .cse2 (+ c_~queue~0.offset .cse3 8)) (select .cse2 (+ c_~queue~0.offset .cse3)))))) (and (not (< 1 .cse1)) (not (< .cse1 0)))) (not (<= (+ c_~back~0 1) v_~back~0_214)) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (= (select .cse2 (+ c_~queue~0.offset (* c_~back~0 4))) 1)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (<= v_~back~0_214 c_~front~0) (not (= (select .cse2 (+ (* v_~back~0_213 4) c_~queue~0.offset)) 1)) (not (= (+ (select .cse2 (+ c_~queue~0.offset (* v_~back~0_214 4))) 1) 0)) (not (= (+ (select .cse2 (+ c_~queue~0.offset (* v_~back~0_212 4))) 1) 0)) (<= c_~n~0 v_~back~0_212)))) .cse4) (or (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int)) (let ((.cse5 (select |c_#memory_int| c_~queue~0.base))) (or (not (<= (+ c_~back~0 1) v_~back~0_214)) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (= (+ (select .cse5 (+ c_~queue~0.offset (* v_~back~0_214 4))) 1) 0)) (not (= (select .cse5 (+ (* v_~back~0_213 4) c_~queue~0.offset)) 1)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (<= v_~back~0_214 c_~front~0) (not (= (+ (select .cse5 (+ c_~queue~0.offset (* v_~back~0_212 4))) 1) 0)) (<= c_~n~0 v_~back~0_212)))) .cse6 .cse4 .cse7) (or (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int) (v_ArrVal_850 (Array Int Int)) (v_ArrVal_851 (Array Int Int))) (let ((.cse8 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_851) |c_ULTIMATE.start_main_#t~ret11#1.base|))) (or (not (<= (+ c_~back~0 1) v_~back~0_214)) (not (= (+ (select .cse8 (+ (* v_~back~0_214 4) |c_ULTIMATE.start_main_#t~ret11#1.offset|)) 1) 0)) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (not (= (+ (select .cse8 (+ |c_ULTIMATE.start_main_#t~ret11#1.offset| (* v_~back~0_212 4))) 1) 0)) (not (= (select .cse8 (+ (* c_~back~0 4) |c_ULTIMATE.start_main_#t~ret11#1.offset|)) 1)) (<= v_~back~0_214 c_~front~0) (let ((.cse9 (let ((.cse10 (* c_~front~0 4))) (+ (select .cse8 (+ .cse10 |c_ULTIMATE.start_main_#t~ret11#1.offset| 12)) c_~sum~0 (select .cse8 (+ .cse10 |c_ULTIMATE.start_main_#t~ret11#1.offset|)) (select .cse8 (+ .cse10 |c_ULTIMATE.start_main_#t~ret11#1.offset| 4)) (select .cse8 (+ .cse10 8 |c_ULTIMATE.start_main_#t~ret11#1.offset|)))))) (and (not (< 1 .cse9)) (not (< .cse9 0)))) (<= c_~n~0 v_~back~0_212) (not (= (select .cse8 (+ (* v_~back~0_213 4) |c_ULTIMATE.start_main_#t~ret11#1.offset|)) 1))))) .cse4) (exists ((v_~back~0_208 Int) (v_~back~0_209 Int)) (let ((.cse12 (select |c_#memory_int| c_~queue~0.base)) (.cse11 (+ v_~back~0_208 1))) (and (<= c_~front~0 .cse11) (= (select .cse12 (+ (* v_~back~0_209 4) c_~queue~0.offset)) 1) (= (+ (select .cse12 (+ c_~queue~0.offset (* v_~back~0_208 4))) 1) 0) (<= .cse11 v_~back~0_209) (<= (+ v_~back~0_209 1) c_~back~0)))) (or (forall ((v_~back~0_212 Int) (v_~back~0_213 Int)) (let ((.cse13 (select |c_#memory_int| c_~queue~0.base))) (or (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (<= (+ c_~back~0 1) v_~back~0_213)) (not (= (select .cse13 (+ (* v_~back~0_213 4) c_~queue~0.offset)) 1)) (not (= (+ (select .cse13 (+ c_~queue~0.offset (* v_~back~0_212 4))) 1) 0)) (< v_~back~0_212 0) (<= c_~n~0 v_~back~0_212)))) .cse14 .cse15) (or (not (< 3 |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (< 4 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse4 .cse16) (or .cse14 (forall ((v_~back~0_212 Int)) (or (not (= (+ (select (select |c_#memory_int| c_~queue~0.base) (+ c_~queue~0.offset (* v_~back~0_212 4))) 1) 0)) (not (<= (+ c_~back~0 1) v_~back~0_212)) (< v_~back~0_212 0) (<= c_~n~0 v_~back~0_212))) .cse7) (or (< 4 |c_ULTIMATE.start_create_fresh_int_array_#in~size#1|) .cse4 .cse16) (<= 2 c_~front~0) (or .cse17 (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int) (v_ArrVal_848 Int) (v_ArrVal_850 (Array Int Int)) (v_ArrVal_851 (Array Int Int))) (let ((.cse18 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_848)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_851) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (<= (+ c_~back~0 1) v_~back~0_214)) (not (= (+ (select .cse18 (+ (* v_~back~0_214 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (not (= (+ (select .cse18 (+ (* v_~back~0_212 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (<= v_~back~0_214 c_~front~0) (not (= (select .cse18 (+ (* c_~back~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (not (= (select .cse18 (+ (* v_~back~0_213 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (<= c_~n~0 v_~back~0_212) (let ((.cse19 (let ((.cse20 (* c_~front~0 4))) (+ c_~sum~0 (select .cse18 (+ .cse20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse18 (+ .cse20 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse18 (+ .cse20 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse18 (+ .cse20 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< 1 .cse19)) (not (< .cse19 0))))))) .cse4) (or (not .cse21) (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int) (v_ArrVal_848 Int) (v_ArrVal_847 Int) (v_ArrVal_850 (Array Int Int)) (v_ArrVal_851 (Array Int Int))) (let ((.cse22 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (let ((.cse25 (* |c_ULTIMATE.start_create_fresh_int_array_#t~post19#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 .cse25 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_847) (+ 8 .cse25 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_848))) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_851) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (<= (+ c_~back~0 1) v_~back~0_214)) (not (= (select .cse22 (+ (* v_~back~0_213 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (not (= (+ (select .cse22 (+ (* v_~back~0_212 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (<= v_~back~0_214 c_~front~0) (not (= (select .cse22 (+ (* c_~back~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (not (= (+ (select .cse22 (+ (* v_~back~0_214 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (<= c_~n~0 v_~back~0_212) (let ((.cse23 (let ((.cse24 (* c_~front~0 4))) (+ c_~sum~0 (select .cse22 (+ .cse24 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse22 (+ .cse24 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse22 (+ .cse24 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse22 (+ .cse24 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< .cse23 0)) (not (< 1 .cse23))))))) (< (+ 3 |c_ULTIMATE.start_create_fresh_int_array_#t~post19#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse4) (or (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int) (v_ArrVal_850 (Array Int Int)) (v_ArrVal_851 (Array Int Int))) (let ((.cse27 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_851) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (<= (+ c_~back~0 1) v_~back~0_214)) (let ((.cse26 (let ((.cse28 (* c_~front~0 4))) (+ c_~sum~0 (select .cse27 (+ .cse28 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse27 (+ .cse28 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse27 (+ .cse28 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse27 (+ .cse28 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< .cse26 0)) (not (< 1 .cse26)))) (not (= (select .cse27 (+ (* v_~back~0_213 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (not (= (select .cse27 (+ (* c_~back~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (= (+ (select .cse27 (+ (* v_~back~0_214 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (<= v_~back~0_214 c_~front~0) (not (= (+ (select .cse27 (+ (* v_~back~0_212 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (<= c_~n~0 v_~back~0_212)))) .cse4) (or (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int) (v_ArrVal_850 (Array Int Int)) (v_ArrVal_851 (Array Int Int))) (let ((.cse29 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_851) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (or (not (<= (+ c_~back~0 1) v_~back~0_214)) (not (= (+ (select .cse29 (+ (* v_~back~0_214 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 1) 0)) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (<= v_~back~0_214 c_~front~0) (let ((.cse30 (let ((.cse31 (* c_~front~0 4))) (+ c_~sum~0 (select .cse29 (+ .cse31 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 4)) (select .cse29 (+ .cse31 8 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (select .cse29 (+ .cse31 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (select .cse29 (+ .cse31 12 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))))) (and (not (< .cse30 0)) (not (< 1 .cse30)))) (not (= (+ (select .cse29 (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| (* v_~back~0_212 4))) 1) 0)) (not (= (select .cse29 (+ (* c_~back~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 1)) (not (= (select .cse29 (+ (* v_~back~0_213 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 1)) (<= c_~n~0 v_~back~0_212)))) .cse4) (or .cse32 (not .cse33) .cse4 .cse16) (or (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int) (v_ArrVal_851 (Array Int Int))) (let ((.cse34 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_851) c_~queue~0.base))) (or (not (<= (+ c_~back~0 1) v_~back~0_214)) (not (= (+ (select .cse34 (+ c_~queue~0.offset (* v_~back~0_214 4))) 1) 0)) (let ((.cse35 (let ((.cse36 (* c_~front~0 4))) (+ c_~sum~0 (select .cse34 (+ c_~queue~0.offset .cse36 12)) (select .cse34 (+ c_~queue~0.offset .cse36)) (select .cse34 (+ c_~queue~0.offset .cse36 8)) (select .cse34 (+ c_~queue~0.offset .cse36 4)))))) (and (not (< .cse35 0)) (not (< 1 .cse35)))) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (not (= (select .cse34 (+ c_~queue~0.offset (* c_~back~0 4))) 1)) (<= v_~back~0_214 c_~front~0) (not (= (select .cse34 (+ (* v_~back~0_213 4) c_~queue~0.offset)) 1)) (not (= (+ (select .cse34 (+ c_~queue~0.offset (* v_~back~0_212 4))) 1) 0)) (<= c_~n~0 v_~back~0_212)))) .cse4) (or .cse37 .cse4 .cse33 (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int) (v_ArrVal_848 Int) (v_ArrVal_847 Int) (v_ArrVal_850 (Array Int Int)) (v_ArrVal_851 (Array Int Int))) (let ((.cse38 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (let ((.cse41 (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse41 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_847) (+ .cse41 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_848))) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_851) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (<= (+ c_~back~0 1) v_~back~0_214)) (not (= (select .cse38 (+ (* c_~back~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (let ((.cse39 (let ((.cse40 (* c_~front~0 4))) (+ c_~sum~0 (select .cse38 (+ .cse40 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse38 (+ .cse40 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse38 (+ .cse40 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse38 (+ .cse40 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< 1 .cse39)) (not (< .cse39 0)))) (not (= (+ (select .cse38 (+ (* v_~back~0_212 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (<= v_~back~0_214 c_~front~0) (not (= (select .cse38 (+ (* v_~back~0_213 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (not (= (+ 1 (select .cse38 (+ (* v_~back~0_214 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) 0)) (<= c_~n~0 v_~back~0_212))))) (or (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int) (v_ArrVal_848 Int) (v_ArrVal_850 (Array Int Int)) (v_ArrVal_851 (Array Int Int))) (let ((.cse42 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 (* |c_ULTIMATE.start_create_fresh_int_array_#t~post19#1| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_848)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_851) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (<= (+ c_~back~0 1) v_~back~0_214)) (not (= (+ (select .cse42 (+ (* v_~back~0_212 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (<= v_~back~0_214 c_~front~0) (not (= (select .cse42 (+ (* v_~back~0_213 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (not (= (select .cse42 (+ (* c_~back~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (not (= (+ (select .cse42 (+ (* v_~back~0_214 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (<= c_~n~0 v_~back~0_212) (let ((.cse43 (let ((.cse44 (* c_~front~0 4))) (+ (select .cse42 (+ .cse44 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~sum~0 (select .cse42 (+ .cse44 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse42 (+ .cse44 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse42 (+ .cse44 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< 1 .cse43)) (not (< .cse43 0))))))) .cse21 (not (< (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post19#1| 1) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) .cse4) (or .cse6 (forall ((v_~back~0_212 Int) (v_~back~0_213 Int)) (let ((.cse45 (select |c_#memory_int| c_~queue~0.base))) (or (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (<= (+ c_~back~0 1) v_~back~0_213)) (not (= (select .cse45 (+ (* v_~back~0_213 4) c_~queue~0.offset)) 1)) (not (= (+ (select .cse45 (+ c_~queue~0.offset (* v_~back~0_212 4))) 1) 0)) (<= c_~n~0 v_~back~0_212)))) (<= c_~back~0 c_~front~0) .cse15 .cse4) (or (< (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (not .cse32) .cse4 .cse16) (or (forall ((v_~back~0_212 Int) (v_~back~0_213 Int) (v_~back~0_214 Int) (v_ArrVal_848 Int) (v_ArrVal_850 (Array Int Int)) (v_ArrVal_851 (Array Int Int))) (let ((.cse46 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~0#1|) 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_848)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_851) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (<= (+ c_~back~0 1) v_~back~0_214)) (not (= (+ (select .cse46 (+ (* v_~back~0_214 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (not (<= (+ v_~back~0_213 1) v_~back~0_212)) (not (= (+ (select .cse46 (+ (* v_~back~0_212 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1) 0)) (not (<= (+ v_~back~0_214 1) v_~back~0_213)) (let ((.cse47 (let ((.cse48 (* c_~front~0 4))) (+ (select .cse46 (+ .cse48 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~sum~0 (select .cse46 (+ .cse48 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse46 (+ .cse48 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse46 (+ .cse48 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (and (not (< .cse47 0)) (not (< 1 .cse47)))) (<= v_~back~0_214 c_~front~0) (not (= (select .cse46 (+ (* c_~back~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (not (= (select .cse46 (+ (* v_~back~0_213 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 1)) (<= c_~n~0 v_~back~0_212)))) .cse37 .cse4 .cse33) (= c_~sum~0 (+ .cse0 (select .cse49 (+ c_~queue~0.offset .cse50 (- 4))))) (or (and (< c_~back~0 4) (= |c_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1)) (and (< c_~front~0 6) (= |c_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0))))))) is different from false [2022-03-03 17:50:03,236 WARN L228 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 500 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:50:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:07,234 INFO L93 Difference]: Finished difference Result 129460 states and 358637 transitions. [2022-03-03 17:50:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-03-03 17:50:07,235 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 5.25) internal successors, (441), 84 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-03-03 17:50:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:07,561 INFO L225 Difference]: With dead ends: 129460 [2022-03-03 17:50:07,561 INFO L226 Difference]: Without dead ends: 120967 [2022-03-03 17:50:07,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 313 SyntacticMatches, 16 SemanticMatches, 217 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16626 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=4974, Invalid=42250, Unknown=86, NotChecked=432, Total=47742 [2022-03-03 17:50:07,566 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 6298 mSDsluCounter, 19071 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6298 SdHoareTripleChecker+Valid, 19271 SdHoareTripleChecker+Invalid, 9757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7808 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:07,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6298 Valid, 19271 Invalid, 9757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 1574 Invalid, 0 Unknown, 7808 Unchecked, 0.9s Time] [2022-03-03 17:50:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120967 states. [2022-03-03 17:50:09,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120967 to 54756. [2022-03-03 17:50:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54756 states, 54755 states have (on average 2.839905031503972) internal successors, (155499), 54755 states have internal predecessors, (155499), 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) [2022-03-03 17:50:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54756 states to 54756 states and 155499 transitions. [2022-03-03 17:50:09,364 INFO L78 Accepts]: Start accepts. Automaton has 54756 states and 155499 transitions. Word has length 172 [2022-03-03 17:50:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:09,365 INFO L470 AbstractCegarLoop]: Abstraction has 54756 states and 155499 transitions. [2022-03-03 17:50:09,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 5.25) internal successors, (441), 84 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 54756 states and 155499 transitions. [2022-03-03 17:50:09,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-03 17:50:09,394 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:09,394 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-03 17:50:09,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-03 17:50:09,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:09,607 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1907672283, now seen corresponding path program 23 times [2022-03-03 17:50:09,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:09,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846196242] [2022-03-03 17:50:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:09,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 20 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:10,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:10,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846196242] [2022-03-03 17:50:10,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846196242] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:10,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164414801] [2022-03-03 17:50:10,721 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:50:10,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:10,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:10,722 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:50:10,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:50:10,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:50:10,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:10,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-03 17:50:10,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:14,233 INFO L353 Elim1Store]: treesize reduction 471, result has 2.7 percent of original size [2022-03-03 17:50:14,233 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 93 treesize of output 36 [2022-03-03 17:50:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:14,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:18,764 INFO L353 Elim1Store]: treesize reduction 351, result has 27.5 percent of original size [2022-03-03 17:50:18,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 143 treesize of output 172 [2022-03-03 17:50:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 132 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:21,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164414801] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:21,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:21,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 28, 28] total 80 [2022-03-03 17:50:21,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724228210] [2022-03-03 17:50:21,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:21,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-03-03 17:50:21,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-03-03 17:50:21,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=5641, Unknown=4, NotChecked=0, Total=6320 [2022-03-03 17:50:21,424 INFO L87 Difference]: Start difference. First operand 54756 states and 155499 transitions. Second operand has 80 states, 80 states have (on average 5.725) internal successors, (458), 80 states have internal predecessors, (458), 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) [2022-03-03 17:51:45,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:51:45,589 INFO L93 Difference]: Finished difference Result 267033 states and 765350 transitions. [2022-03-03 17:51:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 334 states. [2022-03-03 17:51:45,590 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 5.725) internal successors, (458), 80 states have internal predecessors, (458), 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 172 [2022-03-03 17:51:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:51:46,575 INFO L225 Difference]: With dead ends: 267033 [2022-03-03 17:51:46,576 INFO L226 Difference]: Without dead ends: 253828 [2022-03-03 17:51:46,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 360 SyntacticMatches, 59 SemanticMatches, 406 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76811 ImplicationChecksByTransitivity, 84.0s TimeCoverageRelationStatistics Valid=21101, Invalid=144938, Unknown=17, NotChecked=0, Total=166056 [2022-03-03 17:51:46,584 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 5840 mSDsluCounter, 15314 mSDsCounter, 0 mSdLazyCounter, 2950 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5840 SdHoareTripleChecker+Valid, 15617 SdHoareTripleChecker+Invalid, 8100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4719 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:51:46,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5840 Valid, 15617 Invalid, 8100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 2950 Invalid, 0 Unknown, 4719 Unchecked, 1.7s Time] [2022-03-03 17:51:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253828 states. [2022-03-03 17:51:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253828 to 154364. [2022-03-03 17:51:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154364 states, 154363 states have (on average 2.9091621696909233) internal successors, (449067), 154363 states have internal predecessors, (449067), 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) [2022-03-03 17:51:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154364 states to 154364 states and 449067 transitions. [2022-03-03 17:51:51,846 INFO L78 Accepts]: Start accepts. Automaton has 154364 states and 449067 transitions. Word has length 172 [2022-03-03 17:51:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:51:51,846 INFO L470 AbstractCegarLoop]: Abstraction has 154364 states and 449067 transitions. [2022-03-03 17:51:51,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 5.725) internal successors, (458), 80 states have internal predecessors, (458), 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) [2022-03-03 17:51:51,846 INFO L276 IsEmpty]: Start isEmpty. Operand 154364 states and 449067 transitions. [2022-03-03 17:51:51,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-03 17:51:51,888 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:51:51,889 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-03 17:51:51,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 17:51:52,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-03-03 17:51:52,097 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:51:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:51:52,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1919355043, now seen corresponding path program 24 times [2022-03-03 17:51:52,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:51:52,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927921906] [2022-03-03 17:51:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:51:52,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:51:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:51:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:51:53,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:51:53,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927921906] [2022-03-03 17:51:53,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927921906] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:51:53,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715111510] [2022-03-03 17:51:53,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:51:53,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:51:53,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:51:53,581 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:51:53,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:51:53,739 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:51:53,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:51:53,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-03 17:51:53,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:51:55,151 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-03-03 17:51:55,152 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 97 treesize of output 27 [2022-03-03 17:51:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:51:55,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:51:55,866 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-03-03 17:51:55,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 256 [2022-03-03 17:51:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 11 proven. 77 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:51:56,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715111510] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:51:56,856 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:51:56,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 20, 13] total 57 [2022-03-03 17:51:56,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997771187] [2022-03-03 17:51:56,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:51:56,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-03 17:51:56,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:51:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-03 17:51:56,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=2911, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:51:56,857 INFO L87 Difference]: Start difference. First operand 154364 states and 449067 transitions. Second operand has 57 states, 57 states have (on average 7.649122807017544) internal successors, (436), 57 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) [2022-03-03 17:52:04,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:04,532 INFO L93 Difference]: Finished difference Result 223721 states and 634913 transitions. [2022-03-03 17:52:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-03 17:52:04,532 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 7.649122807017544) internal successors, (436), 57 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 172 [2022-03-03 17:52:04,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:05,032 INFO L225 Difference]: With dead ends: 223721 [2022-03-03 17:52:05,032 INFO L226 Difference]: Without dead ends: 170762 [2022-03-03 17:52:05,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6960 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1911, Invalid=20439, Unknown=0, NotChecked=0, Total=22350 [2022-03-03 17:52:05,033 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 2586 mSDsluCounter, 15084 mSDsCounter, 0 mSdLazyCounter, 5055 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2586 SdHoareTripleChecker+Valid, 14991 SdHoareTripleChecker+Invalid, 5223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 5055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:05,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2586 Valid, 14991 Invalid, 5223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 5055 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-03 17:52:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170762 states. [2022-03-03 17:52:08,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170762 to 142853. [2022-03-03 17:52:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142853 states, 142852 states have (on average 2.930823509646347) internal successors, (418674), 142852 states have internal predecessors, (418674), 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) [2022-03-03 17:52:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142853 states to 142853 states and 418674 transitions. [2022-03-03 17:52:09,379 INFO L78 Accepts]: Start accepts. Automaton has 142853 states and 418674 transitions. Word has length 172 [2022-03-03 17:52:09,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:09,379 INFO L470 AbstractCegarLoop]: Abstraction has 142853 states and 418674 transitions. [2022-03-03 17:52:09,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.649122807017544) internal successors, (436), 57 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) [2022-03-03 17:52:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 142853 states and 418674 transitions. [2022-03-03 17:52:09,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-03 17:52:09,406 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:09,406 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-03 17:52:09,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:09,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-03-03 17:52:09,623 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash 390461643, now seen corresponding path program 25 times [2022-03-03 17:52:09,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:09,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474904002] [2022-03-03 17:52:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:09,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:52:09,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:09,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474904002] [2022-03-03 17:52:09,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474904002] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:09,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539198180] [2022-03-03 17:52:09,869 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:52:09,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:09,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:09,871 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:09,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:52:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:09,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 87 conjunts are in the unsatisfiable core [2022-03-03 17:52:09,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:13,099 INFO L353 Elim1Store]: treesize reduction 457, result has 2.8 percent of original size [2022-03-03 17:52:13,099 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 39 [2022-03-03 17:52:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 9 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:13,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:14,528 INFO L353 Elim1Store]: treesize reduction 291, result has 38.1 percent of original size [2022-03-03 17:52:14,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 142 treesize of output 218 [2022-03-03 17:52:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:18,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539198180] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:52:18,909 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:52:18,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 31] total 66 [2022-03-03 17:52:18,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834467173] [2022-03-03 17:52:18,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:52:18,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-03-03 17:52:18,909 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:52:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-03-03 17:52:18,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=3754, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 17:52:18,910 INFO L87 Difference]: Start difference. First operand 142853 states and 418674 transitions. Second operand has 66 states, 66 states have (on average 6.545454545454546) internal successors, (432), 66 states have internal predecessors, (432), 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) [2022-03-03 17:52:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:52:27,187 INFO L93 Difference]: Finished difference Result 205072 states and 590939 transitions. [2022-03-03 17:52:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-03 17:52:27,187 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 6.545454545454546) internal successors, (432), 66 states have internal predecessors, (432), 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 172 [2022-03-03 17:52:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:52:27,839 INFO L225 Difference]: With dead ends: 205072 [2022-03-03 17:52:27,839 INFO L226 Difference]: Without dead ends: 204688 [2022-03-03 17:52:27,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 337 SyntacticMatches, 9 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8217 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=3247, Invalid=22513, Unknown=0, NotChecked=0, Total=25760 [2022-03-03 17:52:27,841 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 4238 mSDsluCounter, 9035 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4238 SdHoareTripleChecker+Valid, 9243 SdHoareTripleChecker+Invalid, 3856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2491 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:52:27,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4238 Valid, 9243 Invalid, 3856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1205 Invalid, 0 Unknown, 2491 Unchecked, 0.6s Time] [2022-03-03 17:52:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204688 states. [2022-03-03 17:52:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204688 to 150089. [2022-03-03 17:52:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150089 states, 150088 states have (on average 2.9274292415116463) internal successors, (439372), 150088 states have internal predecessors, (439372), 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) [2022-03-03 17:52:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150089 states to 150089 states and 439372 transitions. [2022-03-03 17:52:32,665 INFO L78 Accepts]: Start accepts. Automaton has 150089 states and 439372 transitions. Word has length 172 [2022-03-03 17:52:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:52:32,665 INFO L470 AbstractCegarLoop]: Abstraction has 150089 states and 439372 transitions. [2022-03-03 17:52:32,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 6.545454545454546) internal successors, (432), 66 states have internal predecessors, (432), 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) [2022-03-03 17:52:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 150089 states and 439372 transitions. [2022-03-03 17:52:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-03 17:52:32,693 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:52:32,693 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-03 17:52:32,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 17:52:32,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:32,910 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:52:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:52:32,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1592314967, now seen corresponding path program 26 times [2022-03-03 17:52:32,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:52:32,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742499148] [2022-03-03 17:52:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:52:32,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:52:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:52:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:34,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:52:34,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742499148] [2022-03-03 17:52:34,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742499148] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:52:34,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570692425] [2022-03-03 17:52:34,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:52:34,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:52:34,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:52:34,094 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:52:34,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 17:52:34,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:52:34,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:52:34,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 112 conjunts are in the unsatisfiable core [2022-03-03 17:52:34,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:52:35,066 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 [2022-03-03 17:52:35,237 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 [2022-03-03 17:52:35,416 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 [2022-03-03 17:52:35,719 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 [2022-03-03 17:52:36,056 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 [2022-03-03 17:52:36,121 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 [2022-03-03 17:52:36,970 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-03-03 17:52:36,971 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 94 treesize of output 24 [2022-03-03 17:52:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 5 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:52:36,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:52:42,290 INFO L353 Elim1Store]: treesize reduction 293, result has 15.1 percent of original size [2022-03-03 17:52:42,291 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 4 case distinctions, treesize of input 649 treesize of output 268 [2022-03-03 17:52:42,473 INFO L353 Elim1Store]: treesize reduction 316, result has 35.6 percent of original size [2022-03-03 17:52:42,474 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1420 treesize of output 1384 [2022-03-03 17:52:42,626 INFO L353 Elim1Store]: treesize reduction 316, result has 35.6 percent of original size [2022-03-03 17:52:42,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1210 treesize of output 1060 [2022-03-03 17:52:42,772 INFO L353 Elim1Store]: treesize reduction 316, result has 35.6 percent of original size [2022-03-03 17:52:42,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 886 treesize of output 898 [2022-03-03 17:53:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:01,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570692425] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:01,944 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:01,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 38, 37] total 100 [2022-03-03 17:53:01,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860332159] [2022-03-03 17:53:01,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:01,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-03-03 17:53:01,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:01,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-03-03 17:53:01,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1778, Invalid=8035, Unknown=87, NotChecked=0, Total=9900 [2022-03-03 17:53:01,946 INFO L87 Difference]: Start difference. First operand 150089 states and 439372 transitions. Second operand has 100 states, 100 states have (on average 4.62) internal successors, (462), 100 states have internal predecessors, (462), 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) [2022-03-03 17:53:43,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:53:43,121 INFO L93 Difference]: Finished difference Result 330725 states and 953407 transitions. [2022-03-03 17:53:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2022-03-03 17:53:43,122 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 4.62) internal successors, (462), 100 states have internal predecessors, (462), 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 172 [2022-03-03 17:53:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:53:44,422 INFO L225 Difference]: With dead ends: 330725 [2022-03-03 17:53:44,422 INFO L226 Difference]: Without dead ends: 312777 [2022-03-03 17:53:44,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 301 SyntacticMatches, 10 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28297 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=10718, Invalid=60685, Unknown=689, NotChecked=0, Total=72092 [2022-03-03 17:53:44,425 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 5564 mSDsluCounter, 20306 mSDsCounter, 0 mSdLazyCounter, 5962 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5564 SdHoareTripleChecker+Valid, 19136 SdHoareTripleChecker+Invalid, 11835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 5962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5567 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:53:44,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5564 Valid, 19136 Invalid, 11835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 5962 Invalid, 0 Unknown, 5567 Unchecked, 3.8s Time] [2022-03-03 17:53:44,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312777 states. [2022-03-03 17:53:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312777 to 194038. [2022-03-03 17:53:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194038 states, 194037 states have (on average 2.9112282708967876) internal successors, (564886), 194037 states have internal predecessors, (564886), 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) [2022-03-03 17:53:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194038 states to 194038 states and 564886 transitions. [2022-03-03 17:53:51,315 INFO L78 Accepts]: Start accepts. Automaton has 194038 states and 564886 transitions. Word has length 172 [2022-03-03 17:53:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:53:51,315 INFO L470 AbstractCegarLoop]: Abstraction has 194038 states and 564886 transitions. [2022-03-03 17:53:51,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 4.62) internal successors, (462), 100 states have internal predecessors, (462), 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) [2022-03-03 17:53:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 194038 states and 564886 transitions. [2022-03-03 17:53:51,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-03 17:53:51,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:53:51,352 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-03 17:53:51,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-03 17:53:51,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:51,572 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:53:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:53:51,573 INFO L85 PathProgramCache]: Analyzing trace with hash 700532987, now seen corresponding path program 27 times [2022-03-03 17:53:51,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:53:51,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844666386] [2022-03-03 17:53:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:53:51,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:53:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:53:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:53,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:53:53,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844666386] [2022-03-03 17:53:53,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844666386] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:53:53,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728352756] [2022-03-03 17:53:53,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:53:53,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:53:53,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:53:53,308 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:53:53,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 17:53:53,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:53:53,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:53:53,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 86 conjunts are in the unsatisfiable core [2022-03-03 17:53:53,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:53:56,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:53:56,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:53:56,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:53:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:53:56,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-03 17:53:56,302 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:53:56,302 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 42 [2022-03-03 17:53:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:56,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:53:57,421 INFO L353 Elim1Store]: treesize reduction 316, result has 35.6 percent of original size [2022-03-03 17:53:57,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 214 [2022-03-03 17:53:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:53:59,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728352756] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:53:59,096 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:53:59,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 28] total 74 [2022-03-03 17:53:59,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24098347] [2022-03-03 17:53:59,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:53:59,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-03-03 17:53:59,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:53:59,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-03-03 17:53:59,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=936, Invalid=4466, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 17:53:59,097 INFO L87 Difference]: Start difference. First operand 194038 states and 564886 transitions. Second operand has 74 states, 74 states have (on average 5.418918918918919) internal successors, (401), 74 states have internal predecessors, (401), 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) [2022-03-03 17:54:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:21,067 INFO L93 Difference]: Finished difference Result 427777 states and 1230053 transitions. [2022-03-03 17:54:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2022-03-03 17:54:21,068 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 5.418918918918919) internal successors, (401), 74 states have internal predecessors, (401), 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 172 [2022-03-03 17:54:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:22,724 INFO L225 Difference]: With dead ends: 427777 [2022-03-03 17:54:22,724 INFO L226 Difference]: Without dead ends: 398486 [2022-03-03 17:54:22,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 300 SyntacticMatches, 5 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38251 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=10172, Invalid=85000, Unknown=0, NotChecked=0, Total=95172 [2022-03-03 17:54:22,728 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 3935 mSDsluCounter, 16476 mSDsCounter, 0 mSdLazyCounter, 5718 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3935 SdHoareTripleChecker+Valid, 15809 SdHoareTripleChecker+Invalid, 6837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 5718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 924 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:22,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3935 Valid, 15809 Invalid, 6837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 5718 Invalid, 0 Unknown, 924 Unchecked, 3.9s Time] [2022-03-03 17:54:23,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398486 states. [2022-03-03 17:54:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398486 to 233159. [2022-03-03 17:54:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233159 states, 233158 states have (on average 2.9182314138910095) internal successors, (680409), 233158 states have internal predecessors, (680409), 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) [2022-03-03 17:54:31,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233159 states to 233159 states and 680409 transitions. [2022-03-03 17:54:31,023 INFO L78 Accepts]: Start accepts. Automaton has 233159 states and 680409 transitions. Word has length 172 [2022-03-03 17:54:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:54:31,023 INFO L470 AbstractCegarLoop]: Abstraction has 233159 states and 680409 transitions. [2022-03-03 17:54:31,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 5.418918918918919) internal successors, (401), 74 states have internal predecessors, (401), 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) [2022-03-03 17:54:31,023 INFO L276 IsEmpty]: Start isEmpty. Operand 233159 states and 680409 transitions. [2022-03-03 17:54:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-03 17:54:31,062 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:54:31,062 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-03 17:54:31,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 17:54:31,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:31,279 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:54:31,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:54:31,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1972707299, now seen corresponding path program 28 times [2022-03-03 17:54:31,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:54:31,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019373051] [2022-03-03 17:54:31,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:54:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:54:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:54:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 5 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:32,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:54:32,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019373051] [2022-03-03 17:54:32,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019373051] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:54:32,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385664821] [2022-03-03 17:54:32,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:54:32,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:54:32,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:54:32,849 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:54:32,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 17:54:32,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:54:32,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:54:32,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 87 conjunts are in the unsatisfiable core [2022-03-03 17:54:32,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:54:35,941 INFO L353 Elim1Store]: treesize reduction 345, result has 2.8 percent of original size [2022-03-03 17:54:35,941 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 95 treesize of output 36 [2022-03-03 17:54:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:35,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:54:37,728 INFO L353 Elim1Store]: treesize reduction 265, result has 43.6 percent of original size [2022-03-03 17:54:37,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 142 treesize of output 244 [2022-03-03 17:54:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:54:44,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385664821] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:54:44,239 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:54:44,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 31] total 87 [2022-03-03 17:54:44,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038413574] [2022-03-03 17:54:44,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:54:44,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-03 17:54:44,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:54:44,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-03 17:54:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=6618, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 17:54:44,241 INFO L87 Difference]: Start difference. First operand 233159 states and 680409 transitions. Second operand has 87 states, 87 states have (on average 5.206896551724138) internal successors, (453), 87 states have internal predecessors, (453), 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) [2022-03-03 17:54:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:53,175 INFO L93 Difference]: Finished difference Result 238767 states and 695441 transitions. [2022-03-03 17:54:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 17:54:53,175 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.206896551724138) internal successors, (453), 87 states have internal predecessors, (453), 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 172 [2022-03-03 17:54:53,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:54,411 INFO L225 Difference]: With dead ends: 238767 [2022-03-03 17:54:54,411 INFO L226 Difference]: Without dead ends: 238233 [2022-03-03 17:54:54,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 301 SyntacticMatches, 10 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7013 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=2630, Invalid=19422, Unknown=0, NotChecked=0, Total=22052 [2022-03-03 17:54:54,412 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 2729 mSDsluCounter, 5920 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 5983 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1055 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:54,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2729 Valid, 5983 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1387 Invalid, 0 Unknown, 1055 Unchecked, 0.8s Time] [2022-03-03 17:54:54,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238233 states. [2022-03-03 17:54:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238233 to 233391. [2022-03-03 17:55:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233391 states, 233390 states have (on average 2.9179013668109173) internal successors, (681009), 233390 states have internal predecessors, (681009), 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) [2022-03-03 17:55:01,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233391 states to 233391 states and 681009 transitions. [2022-03-03 17:55:01,898 INFO L78 Accepts]: Start accepts. Automaton has 233391 states and 681009 transitions. Word has length 172 [2022-03-03 17:55:01,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:01,899 INFO L470 AbstractCegarLoop]: Abstraction has 233391 states and 681009 transitions. [2022-03-03 17:55:01,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.206896551724138) internal successors, (453), 87 states have internal predecessors, (453), 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) [2022-03-03 17:55:01,899 INFO L276 IsEmpty]: Start isEmpty. Operand 233391 states and 681009 transitions. [2022-03-03 17:55:01,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-03 17:55:01,946 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:01,946 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-03 17:55:01,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-03 17:55:02,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-03 17:55:02,160 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:02,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash -467140709, now seen corresponding path program 29 times [2022-03-03 17:55:02,162 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:02,162 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465080188] [2022-03-03 17:55:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:02,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:03,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:03,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465080188] [2022-03-03 17:55:03,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465080188] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:03,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687725136] [2022-03-03 17:55:03,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:55:03,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:03,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:03,242 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:03,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 17:55:03,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:55:03,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:03,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-03 17:55:03,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:05,868 INFO L353 Elim1Store]: treesize reduction 478, result has 2.6 percent of original size [2022-03-03 17:55:05,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 36 [2022-03-03 17:55:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:05,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:07,015 INFO L353 Elim1Store]: treesize reduction 358, result has 27.1 percent of original size [2022-03-03 17:55:07,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 172 [2022-03-03 17:55:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:08,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687725136] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:08,890 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:08,890 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 28, 28] total 80 [2022-03-03 17:55:08,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050048699] [2022-03-03 17:55:08,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:08,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-03-03 17:55:08,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:08,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-03-03 17:55:08,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1307, Invalid=5013, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 17:55:08,893 INFO L87 Difference]: Start difference. First operand 233391 states and 681009 transitions. Second operand has 80 states, 80 states have (on average 5.725) internal successors, (458), 80 states have internal predecessors, (458), 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) [2022-03-03 17:55:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:27,433 INFO L93 Difference]: Finished difference Result 334224 states and 963705 transitions. [2022-03-03 17:55:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-03-03 17:55:27,434 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 5.725) internal successors, (458), 80 states have internal predecessors, (458), 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 172 [2022-03-03 17:55:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:28,484 INFO L225 Difference]: With dead ends: 334224 [2022-03-03 17:55:28,484 INFO L226 Difference]: Without dead ends: 320825 [2022-03-03 17:55:28,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 296 SyntacticMatches, 5 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25489 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=8952, Invalid=51810, Unknown=0, NotChecked=0, Total=60762 [2022-03-03 17:55:28,486 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 5360 mSDsluCounter, 10751 mSDsCounter, 0 mSdLazyCounter, 4063 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5360 SdHoareTripleChecker+Valid, 10406 SdHoareTripleChecker+Invalid, 4768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 4063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 390 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:28,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5360 Valid, 10406 Invalid, 4768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 4063 Invalid, 0 Unknown, 390 Unchecked, 2.7s Time] [2022-03-03 17:55:29,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320825 states. [2022-03-03 17:55:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320825 to 256533. [2022-03-03 17:55:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256533 states, 256532 states have (on average 2.912096736469524) internal successors, (747046), 256532 states have internal predecessors, (747046), 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) [2022-03-03 17:55:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256533 states to 256533 states and 747046 transitions. [2022-03-03 17:55:36,698 INFO L78 Accepts]: Start accepts. Automaton has 256533 states and 747046 transitions. Word has length 172 [2022-03-03 17:55:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:36,698 INFO L470 AbstractCegarLoop]: Abstraction has 256533 states and 747046 transitions. [2022-03-03 17:55:36,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 5.725) internal successors, (458), 80 states have internal predecessors, (458), 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) [2022-03-03 17:55:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 256533 states and 747046 transitions. [2022-03-03 17:55:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-03 17:55:36,743 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:36,744 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-03 17:55:36,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:36,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-03 17:55:36,960 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:36,961 INFO L85 PathProgramCache]: Analyzing trace with hash -445902371, now seen corresponding path program 30 times [2022-03-03 17:55:36,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:36,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237684702] [2022-03-03 17:55:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:36,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:38,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:38,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237684702] [2022-03-03 17:55:38,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237684702] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:38,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548351476] [2022-03-03 17:55:38,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:55:38,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:38,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:38,521 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:55:38,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 17:55:38,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:55:38,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:38,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-03 17:55:38,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:40,009 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-03-03 17:55:40,010 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 99 treesize of output 29 [2022-03-03 17:55:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-03 17:55:40,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:40,941 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-03-03 17:55:40,941 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 256 [2022-03-03 17:55:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:55:41,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548351476] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:41,693 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:41,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 17, 13] total 54 [2022-03-03 17:55:41,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874478627] [2022-03-03 17:55:41,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:41,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-03 17:55:41,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:41,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-03 17:55:41,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2605, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 17:55:41,694 INFO L87 Difference]: Start difference. First operand 256533 states and 747046 transitions. Second operand has 54 states, 54 states have (on average 7.851851851851852) internal successors, (424), 54 states have internal predecessors, (424), 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) Received shutdown request... [2022-03-03 17:56:31,058 WARN L244 SmtUtils]: Removed 5 from assertion stack [2022-03-03 17:56:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 439 states. [2022-03-03 17:56:31,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 323 SyntacticMatches, 3 SemanticMatches, 476 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99485 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=18259, Invalid=209747, Unknown=0, NotChecked=0, Total=228006 [2022-03-03 17:56:31,070 INFO L933 BasicCegarLoop]: 1284 mSDtfsCounter, 5336 mSDsluCounter, 35646 mSDsCounter, 0 mSdLazyCounter, 13831 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5336 SdHoareTripleChecker+Valid, 34452 SdHoareTripleChecker+Invalid, 14192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 13831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:56:31,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5336 Valid, 34452 Invalid, 14192 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [361 Valid, 13831 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-03-03 17:56:31,071 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 17:56:31,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 17:56:31,103 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:56:31,103 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 [2022-03-03 17:56:31,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-03 17:56:31,291 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (256533states) and FLOYD_HOARE automaton (currently 439 states, 54 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 96 for 66ms.. [2022-03-03 17:56:31,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 17:56:31,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 17:56:31,294 INFO L732 BasicCegarLoop]: Path program histogram: [30, 3, 1, 1, 1, 1, 1] [2022-03-03 17:56:31,296 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 17:56:31,296 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 17:56:31,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 05:56:31 BasicIcfg [2022-03-03 17:56:31,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 17:56:31,297 INFO L158 Benchmark]: Toolchain (without parser) took 805961.12ms. Allocated memory was 191.9MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 141.1MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2022-03-03 17:56:31,297 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 191.9MB. Free memory is still 157.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:56:31,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.22ms. Allocated memory is still 191.9MB. Free memory was 141.0MB in the beginning and 166.5MB in the end (delta: -25.5MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. [2022-03-03 17:56:31,297 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.09ms. Allocated memory is still 191.9MB. Free memory was 166.5MB in the beginning and 164.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:56:31,297 INFO L158 Benchmark]: Boogie Preprocessor took 20.81ms. Allocated memory is still 191.9MB. Free memory was 164.4MB in the beginning and 162.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 17:56:31,297 INFO L158 Benchmark]: RCFGBuilder took 445.70ms. Allocated memory is still 191.9MB. Free memory was 162.8MB in the beginning and 143.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-03-03 17:56:31,298 INFO L158 Benchmark]: TraceAbstraction took 805226.85ms. Allocated memory was 191.9MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 143.4MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2022-03-03 17:56:31,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 191.9MB. Free memory is still 157.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.22ms. Allocated memory is still 191.9MB. Free memory was 141.0MB in the beginning and 166.5MB in the end (delta: -25.5MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.09ms. Allocated memory is still 191.9MB. Free memory was 166.5MB in the beginning and 164.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.81ms. Allocated memory is still 191.9MB. Free memory was 164.4MB in the beginning and 162.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 445.70ms. Allocated memory is still 191.9MB. Free memory was 162.8MB in the beginning and 143.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 805226.85ms. Allocated memory was 191.9MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 143.4MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. * 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: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (256533states) and FLOYD_HOARE automaton (currently 439 states, 54 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 96 for 66ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (256533states) and FLOYD_HOARE automaton (currently 439 states, 54 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 96 for 66ms.. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (256533states) and FLOYD_HOARE automaton (currently 439 states, 54 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 96 for 66ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 805.1s, OverallIterations: 38, TraceHistogramMax: 6, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.7s, AutomataDifference: 449.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102025 SdHoareTripleChecker+Valid, 53.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102025 mSDsluCounter, 330287 SdHoareTripleChecker+Invalid, 46.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 44979 IncrementalHoareTripleChecker+Unchecked, 338895 mSDsCounter, 5807 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100692 IncrementalHoareTripleChecker+Invalid, 151478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5807 mSolverCounterUnsat, 11167 mSDtfsCounter, 100692 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14493 GetRequests, 8792 SyntacticMatches, 259 SemanticMatches, 5441 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 520904 ImplicationChecksByTransitivity, 425.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256533occurred in iteration=37, InterpolantAutomatonStates: 3467, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 56.6s AutomataMinimizationTime, 37 MinimizatonAttempts, 873897 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 284.6s InterpolantComputationTime, 10436 NumberOfCodeBlocks, 10308 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 15137 ConstructedInterpolants, 921 QuantifiedInterpolants, 412030 SizeOfPredicates, 963 NumberOfNonLiveVariables, 10753 ConjunctsInSsa, 2046 ConjunctsInUnsatCore, 101 InterpolantComputations, 7 PerfectInterpolantSequences, 1310/8250 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