/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/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 16:17:53,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 16:17:53,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 16:17:53,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 16:17:53,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 16:17:53,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 16:17:53,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 16:17:53,096 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 [2022-03-01 16:17:53,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 16:17:53,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 16:17:53,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 16:17:53,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 16:17:53,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 16:17:53,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 16:17:53,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 16:17:53,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 16:17:53,116 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 16:17:53,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 16:17:53,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 16:17:53,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 16:17:53,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 16:17:53,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 16:17:53,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 16:17:53,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 16:17:53,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 16:17:53,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 16:17:53,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 16:17:53,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 16:17:53,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 16:17:53,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 16:17:53,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 16:17:53,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 16:17:53,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 16:17:53,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:17:53,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 16:17:53,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 16:17:53,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 16:17:53,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 16:17:53,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 16:17:53,118 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 16:17:53,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 16:17:53,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 16:17:53,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 16:17:53,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 16:17:53,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 16:17:53,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 16:17:53,333 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 16:17:53,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-03-01 16:17:53,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d44c4e63/d1a9cd0cc6b44cd9b4f9cf92f15306eb/FLAGdbd817475 [2022-03-01 16:17:53,730 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 16:17:53,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-03-01 16:17:53,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d44c4e63/d1a9cd0cc6b44cd9b4f9cf92f15306eb/FLAGdbd817475 [2022-03-01 16:17:54,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d44c4e63/d1a9cd0cc6b44cd9b4f9cf92f15306eb [2022-03-01 16:17:54,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 16:17:54,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 16:17:54,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 16:17:54,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 16:17:54,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 16:17:54,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2140ffd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54, skipping insertion in model container [2022-03-01 16:17:54,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 16:17:54,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 16:17:54,329 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/test-context1.wvr.c[2433,2446] [2022-03-01 16:17:54,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:17:54,340 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 16:17:54,365 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/test-context1.wvr.c[2433,2446] [2022-03-01 16:17:54,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:17:54,377 INFO L208 MainTranslator]: Completed translation [2022-03-01 16:17:54,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54 WrapperNode [2022-03-01 16:17:54,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 16:17:54,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 16:17:54,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 16:17:54,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 16:17:54,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,414 INFO L137 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 131 [2022-03-01 16:17:54,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 16:17:54,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 16:17:54,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 16:17:54,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 16:17:54,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 16:17:54,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 16:17:54,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 16:17:54,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 16:17:54,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (1/1) ... [2022-03-01 16:17:54,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:17:54,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:17:54,490 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) [2022-03-01 16:17:54,505 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 [2022-03-01 16:17:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 16:17:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 16:17:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 16:17:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 16:17:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-01 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 16:17:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 16:17:54,522 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 16:17:54,580 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 16:17:54,581 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 16:17:54,726 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 16:17:54,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 16:17:54,816 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-01 16:17:54,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:17:54 BoogieIcfgContainer [2022-03-01 16:17:54,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 16:17:54,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 16:17:54,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 16:17:54,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 16:17:54,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 04:17:54" (1/3) ... [2022-03-01 16:17:54,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1502db32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:17:54, skipping insertion in model container [2022-03-01 16:17:54,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:17:54" (2/3) ... [2022-03-01 16:17:54,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1502db32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:17:54, skipping insertion in model container [2022-03-01 16:17:54,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:17:54" (3/3) ... [2022-03-01 16:17:54,828 INFO L111 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-03-01 16:17:54,832 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 16:17:54,832 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 16:17:54,832 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 16:17:54,832 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 16:17:54,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,891 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,893 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,894 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,900 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,901 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:17:54,911 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 16:17:54,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 16:17:54,959 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 [2022-03-01 16:17:54,959 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 16:17:54,978 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 114 places, 116 transitions, 248 flow [2022-03-01 16:17:55,021 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 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) [2022-03-01 16:17:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 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) [2022-03-01 16:17:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-01 16:17:55,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:17:55,035 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] [2022-03-01 16:17:55,040 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:17:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:17:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1680176795, now seen corresponding path program 1 times [2022-03-01 16:17:55,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:17:55,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762501177] [2022-03-01 16:17:55,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:17:55,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:17:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:17:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:17:55,234 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:17:55,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762501177] [2022-03-01 16:17:55,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762501177] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:17:55,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:17:55,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 16:17:55,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248636324] [2022-03-01 16:17:55,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:17:55,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 16:17:55,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:17:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 16:17:55,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 16:17:55,259 INFO L87 Difference]: Start difference. First operand has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 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 40.5) internal successors, (81), 2 states have internal predecessors, (81), 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) [2022-03-01 16:17:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:17:55,285 INFO L93 Difference]: Finished difference Result 331 states and 738 transitions. [2022-03-01 16:17:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 16:17:55,287 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2022-03-01 16:17:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:17:55,295 INFO L225 Difference]: With dead ends: 331 [2022-03-01 16:17:55,296 INFO L226 Difference]: Without dead ends: 328 [2022-03-01 16:17:55,297 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 [2022-03-01 16:17:55,299 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:17:55,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:17:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-01 16:17:55,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-03-01 16:17:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.2477064220183487) internal successors, (735), 327 states have internal predecessors, (735), 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) [2022-03-01 16:17:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 735 transitions. [2022-03-01 16:17:55,346 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 735 transitions. Word has length 81 [2022-03-01 16:17:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:17:55,347 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 735 transitions. [2022-03-01 16:17:55,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 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) [2022-03-01 16:17:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 735 transitions. [2022-03-01 16:17:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-01 16:17:55,350 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:17:55,350 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] [2022-03-01 16:17:55,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 16:17:55,351 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:17:55,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:17:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash -415887122, now seen corresponding path program 1 times [2022-03-01 16:17:55,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:17:55,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407990878] [2022-03-01 16:17:55,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:17:55,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:17:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:17:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:17:55,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:17:55,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407990878] [2022-03-01 16:17:55,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407990878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:17:55,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:17:55,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:17:55,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012868145] [2022-03-01 16:17:55,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:17:55,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:17:55,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:17:55,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:17:55,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:17:55,535 INFO L87 Difference]: Start difference. First operand 328 states and 735 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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) [2022-03-01 16:17:55,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:17:55,590 INFO L93 Difference]: Finished difference Result 551 states and 1322 transitions. [2022-03-01 16:17:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 16:17:55,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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 83 [2022-03-01 16:17:55,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:17:55,607 INFO L225 Difference]: With dead ends: 551 [2022-03-01 16:17:55,608 INFO L226 Difference]: Without dead ends: 421 [2022-03-01 16:17:55,608 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 [2022-03-01 16:17:55,609 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 16 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:17:55,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 294 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:17:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-03-01 16:17:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 359. [2022-03-01 16:17:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 2.2849162011173183) internal successors, (818), 358 states have internal predecessors, (818), 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) [2022-03-01 16:17:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 818 transitions. [2022-03-01 16:17:55,624 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 818 transitions. Word has length 83 [2022-03-01 16:17:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:17:55,624 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 818 transitions. [2022-03-01 16:17:55,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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) [2022-03-01 16:17:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 818 transitions. [2022-03-01 16:17:55,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-01 16:17:55,626 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:17:55,627 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] [2022-03-01 16:17:55,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 16:17:55,627 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:17:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:17:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1146128612, now seen corresponding path program 1 times [2022-03-01 16:17:55,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:17:55,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486994804] [2022-03-01 16:17:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:17:55,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:17:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:17:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:17:55,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:17:55,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486994804] [2022-03-01 16:17:55,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486994804] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:17:55,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:17:55,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 16:17:55,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499895077] [2022-03-01 16:17:55,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:17:55,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 16:17:55,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:17:55,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 16:17:55,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 16:17:55,684 INFO L87 Difference]: Start difference. First operand 359 states and 818 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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) [2022-03-01 16:17:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:17:55,696 INFO L93 Difference]: Finished difference Result 494 states and 1120 transitions. [2022-03-01 16:17:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 16:17:55,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 [2022-03-01 16:17:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:17:55,699 INFO L225 Difference]: With dead ends: 494 [2022-03-01 16:17:55,699 INFO L226 Difference]: Without dead ends: 413 [2022-03-01 16:17:55,699 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 [2022-03-01 16:17:55,700 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 15 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:17:55,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 131 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:17:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-03-01 16:17:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-03-01 16:17:55,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.283980582524272) internal successors, (941), 412 states have internal predecessors, (941), 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) [2022-03-01 16:17:55,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 941 transitions. [2022-03-01 16:17:55,710 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 941 transitions. Word has length 86 [2022-03-01 16:17:55,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:17:55,711 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 941 transitions. [2022-03-01 16:17:55,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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) [2022-03-01 16:17:55,711 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 941 transitions. [2022-03-01 16:17:55,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-01 16:17:55,712 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:17:55,712 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] [2022-03-01 16:17:55,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 16:17:55,712 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:17:55,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:17:55,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1766674574, now seen corresponding path program 1 times [2022-03-01 16:17:55,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:17:55,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128536865] [2022-03-01 16:17:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:17:55,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:17:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:17:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:17:55,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:17:55,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128536865] [2022-03-01 16:17:55,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128536865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:17:55,851 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:17:55,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 16:17:55,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99435690] [2022-03-01 16:17:55,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:17:55,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 16:17:55,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:17:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 16:17:55,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-01 16:17:55,853 INFO L87 Difference]: Start difference. First operand 413 states and 941 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 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) [2022-03-01 16:17:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:17:55,944 INFO L93 Difference]: Finished difference Result 544 states and 1228 transitions. [2022-03-01 16:17:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 16:17:55,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 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 89 [2022-03-01 16:17:55,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:17:55,947 INFO L225 Difference]: With dead ends: 544 [2022-03-01 16:17:55,947 INFO L226 Difference]: Without dead ends: 481 [2022-03-01 16:17:55,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-03-01 16:17:55,950 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 234 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:17:55,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 293 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:17:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-03-01 16:17:55,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 414. [2022-03-01 16:17:55,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.280871670702179) internal successors, (942), 413 states have internal predecessors, (942), 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) [2022-03-01 16:17:55,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 942 transitions. [2022-03-01 16:17:55,960 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 942 transitions. Word has length 89 [2022-03-01 16:17:55,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:17:55,961 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 942 transitions. [2022-03-01 16:17:55,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 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) [2022-03-01 16:17:55,965 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 942 transitions. [2022-03-01 16:17:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 16:17:55,970 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:17:55,971 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] [2022-03-01 16:17:55,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 16:17:55,971 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:17:55,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:17:55,975 INFO L85 PathProgramCache]: Analyzing trace with hash 249833095, now seen corresponding path program 1 times [2022-03-01 16:17:55,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:17:55,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095278916] [2022-03-01 16:17:55,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:17:55,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:17:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:17:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:17:56,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:17:56,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095278916] [2022-03-01 16:17:56,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095278916] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:17:56,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925790484] [2022-03-01 16:17:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:17:56,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:17:56,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:17:56,240 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) [2022-03-01 16:17:56,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 16:17:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:17:56,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-01 16:17:56,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:17:56,790 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 15 treesize of output 7 [2022-03-01 16:17:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:17:56,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:17:56,893 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-03-01 16:17:56,894 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 27 treesize of output 13 [2022-03-01 16:17:56,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:17:56,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925790484] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:17:56,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:17:56,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 7] total 15 [2022-03-01 16:17:56,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351883653] [2022-03-01 16:17:56,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:17:56,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-01 16:17:56,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:17:56,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-01 16:17:56,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-03-01 16:17:56,999 INFO L87 Difference]: Start difference. First operand 414 states and 942 transitions. Second operand has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 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) [2022-03-01 16:17:57,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:17:57,179 INFO L93 Difference]: Finished difference Result 799 states and 1958 transitions. [2022-03-01 16:17:57,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 16:17:57,179 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 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 96 [2022-03-01 16:17:57,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:17:57,182 INFO L225 Difference]: With dead ends: 799 [2022-03-01 16:17:57,182 INFO L226 Difference]: Without dead ends: 669 [2022-03-01 16:17:57,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2022-03-01 16:17:57,183 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 229 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:17:57,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 728 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:17:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-03-01 16:17:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 514. [2022-03-01 16:17:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 2.348927875243665) internal successors, (1205), 513 states have internal predecessors, (1205), 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) [2022-03-01 16:17:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1205 transitions. [2022-03-01 16:17:57,194 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1205 transitions. Word has length 96 [2022-03-01 16:17:57,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:17:57,195 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1205 transitions. [2022-03-01 16:17:57,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 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) [2022-03-01 16:17:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1205 transitions. [2022-03-01 16:17:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-01 16:17:57,197 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:17:57,197 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] [2022-03-01 16:17:57,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-01 16:17:57,411 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 [2022-03-01 16:17:57,412 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:17:57,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:17:57,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2113726581, now seen corresponding path program 2 times [2022-03-01 16:17:57,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:17:57,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871295598] [2022-03-01 16:17:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:17:57,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:17:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:17:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:17:57,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:17:57,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871295598] [2022-03-01 16:17:57,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871295598] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:17:57,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902189447] [2022-03-01 16:17:57,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:17:57,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:17:57,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:17:57,628 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) [2022-03-01 16:17:57,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 16:17:57,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:17:57,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:17:57,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-01 16:17:57,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:17:58,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:17:58,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-01 16:17:58,249 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 15 treesize of output 7 [2022-03-01 16:17:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:17:58,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:17:58,333 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_89 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_89) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) 5)) is different from false [2022-03-01 16:17:58,365 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:17:58,365 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 45 treesize of output 45 [2022-03-01 16:17:58,368 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 13 treesize of output 7 [2022-03-01 16:17:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:17:58,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902189447] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:17:58,711 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:17:58,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 30 [2022-03-01 16:17:58,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241822471] [2022-03-01 16:17:58,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:17:58,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-01 16:17:58,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:17:58,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-01 16:17:58,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=696, Unknown=1, NotChecked=54, Total=870 [2022-03-01 16:17:58,713 INFO L87 Difference]: Start difference. First operand 514 states and 1205 transitions. Second operand has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 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) [2022-03-01 16:17:59,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:17:59,030 INFO L93 Difference]: Finished difference Result 941 states and 2353 transitions. [2022-03-01 16:17:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 16:17:59,031 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 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 96 [2022-03-01 16:17:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:17:59,034 INFO L225 Difference]: With dead ends: 941 [2022-03-01 16:17:59,034 INFO L226 Difference]: Without dead ends: 811 [2022-03-01 16:17:59,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=277, Invalid=1366, Unknown=1, NotChecked=78, Total=1722 [2022-03-01 16:17:59,036 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 411 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:17:59,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 990 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 232 Invalid, 0 Unknown, 143 Unchecked, 0.1s Time] [2022-03-01 16:17:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-03-01 16:17:59,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 507. [2022-03-01 16:17:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 2.3537549407114624) internal successors, (1191), 506 states have internal predecessors, (1191), 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) [2022-03-01 16:17:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1191 transitions. [2022-03-01 16:17:59,057 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1191 transitions. Word has length 96 [2022-03-01 16:17:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:17:59,057 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 1191 transitions. [2022-03-01 16:17:59,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 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) [2022-03-01 16:17:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1191 transitions. [2022-03-01 16:17:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 16:17:59,059 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:17:59,059 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:17:59,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 16:17:59,276 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,SelfDestructingSolverStorable5 [2022-03-01 16:17:59,276 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:17:59,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:17:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash -541859669, now seen corresponding path program 3 times [2022-03-01 16:17:59,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:17:59,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627673015] [2022-03-01 16:17:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:17:59,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:17:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:17:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:17:59,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:17:59,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627673015] [2022-03-01 16:17:59,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627673015] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:17:59,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210129175] [2022-03-01 16:17:59,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:17:59,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:17:59,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:17:59,356 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) [2022-03-01 16:17:59,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 16:17:59,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:17:59,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:17:59,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-01 16:17:59,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:17:59,910 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-01 16:17:59,911 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 19 treesize of output 10 [2022-03-01 16:17:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 16:17:59,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:00,106 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-01 16:18:00,107 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 27 treesize of output 19 [2022-03-01 16:18:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 16:18:00,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210129175] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:00,730 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:00,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 14] total 25 [2022-03-01 16:18:00,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624334629] [2022-03-01 16:18:00,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:00,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 16:18:00,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 16:18:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-03-01 16:18:00,731 INFO L87 Difference]: Start difference. First operand 507 states and 1191 transitions. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2022-03-01 16:18:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:01,040 INFO L93 Difference]: Finished difference Result 1645 states and 4033 transitions. [2022-03-01 16:18:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 16:18:01,040 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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 99 [2022-03-01 16:18:01,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:01,045 INFO L225 Difference]: With dead ends: 1645 [2022-03-01 16:18:01,045 INFO L226 Difference]: Without dead ends: 1369 [2022-03-01 16:18:01,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 16:18:01,046 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 709 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:01,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1000 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 277 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-03-01 16:18:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-03-01 16:18:01,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 876. [2022-03-01 16:18:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.4525714285714284) internal successors, (2146), 875 states have internal predecessors, (2146), 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) [2022-03-01 16:18:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2146 transitions. [2022-03-01 16:18:01,064 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2146 transitions. Word has length 99 [2022-03-01 16:18:01,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:01,064 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2146 transitions. [2022-03-01 16:18:01,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2022-03-01 16:18:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2146 transitions. [2022-03-01 16:18:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-01 16:18:01,066 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:01,066 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-01 16:18:01,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:01,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:01,300 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash -176182363, now seen corresponding path program 4 times [2022-03-01 16:18:01,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:01,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927039894] [2022-03-01 16:18:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:01,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 16:18:01,410 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:01,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927039894] [2022-03-01 16:18:01,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927039894] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:01,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248289950] [2022-03-01 16:18:01,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:18:01,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:01,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:01,424 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) [2022-03-01 16:18:01,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 16:18:01,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:18:01,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:01,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:18:01,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 16:18:01,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 16:18:02,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248289950] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:02,202 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:02,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-03-01 16:18:02,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716439984] [2022-03-01 16:18:02,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:02,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 16:18:02,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:02,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 16:18:02,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-03-01 16:18:02,203 INFO L87 Difference]: Start difference. First operand 876 states and 2146 transitions. Second operand has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 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) [2022-03-01 16:18:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:02,442 INFO L93 Difference]: Finished difference Result 956 states and 2300 transitions. [2022-03-01 16:18:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-01 16:18:02,443 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 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 [2022-03-01 16:18:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:02,445 INFO L225 Difference]: With dead ends: 956 [2022-03-01 16:18:02,446 INFO L226 Difference]: Without dead ends: 764 [2022-03-01 16:18:02,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=943, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 16:18:02,446 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 681 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:02,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 769 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:18:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-01 16:18:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 759. [2022-03-01 16:18:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 2.4775725593667546) internal successors, (1878), 758 states have internal predecessors, (1878), 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) [2022-03-01 16:18:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1878 transitions. [2022-03-01 16:18:02,459 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1878 transitions. Word has length 102 [2022-03-01 16:18:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:02,460 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1878 transitions. [2022-03-01 16:18:02,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 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) [2022-03-01 16:18:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1878 transitions. [2022-03-01 16:18:02,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-01 16:18:02,461 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:02,461 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-01 16:18:02,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:02,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:02,676 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:02,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash 453195598, now seen corresponding path program 5 times [2022-03-01 16:18:02,677 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:02,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219771338] [2022-03-01 16:18:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:18:02,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:02,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219771338] [2022-03-01 16:18:02,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219771338] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:02,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523637984] [2022-03-01 16:18:02,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:18:02,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:02,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:02,907 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) [2022-03-01 16:18:02,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 16:18:02,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:18:02,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:02,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 16:18:02,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:03,434 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-01 16:18:03,434 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 27 treesize of output 10 [2022-03-01 16:18:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:18:03,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:03,533 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 16:18:03,533 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 28 treesize of output 13 [2022-03-01 16:18:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:18:03,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523637984] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:03,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:03,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 26 [2022-03-01 16:18:03,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802920562] [2022-03-01 16:18:03,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:03,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 16:18:03,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 16:18:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-03-01 16:18:03,776 INFO L87 Difference]: Start difference. First operand 759 states and 1878 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 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) [2022-03-01 16:18:04,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:04,419 INFO L93 Difference]: Finished difference Result 2366 states and 6050 transitions. [2022-03-01 16:18:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:18:04,419 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 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 [2022-03-01 16:18:04,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:04,425 INFO L225 Difference]: With dead ends: 2366 [2022-03-01 16:18:04,425 INFO L226 Difference]: Without dead ends: 1564 [2022-03-01 16:18:04,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=447, Invalid=2975, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 16:18:04,426 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 716 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:04,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1788 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 553 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-03-01 16:18:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-03-01 16:18:04,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 668. [2022-03-01 16:18:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 2.3928035982008997) internal successors, (1596), 667 states have internal predecessors, (1596), 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) [2022-03-01 16:18:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1596 transitions. [2022-03-01 16:18:04,443 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1596 transitions. Word has length 109 [2022-03-01 16:18:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:04,444 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1596 transitions. [2022-03-01 16:18:04,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 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) [2022-03-01 16:18:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1596 transitions. [2022-03-01 16:18:04,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-01 16:18:04,445 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:04,445 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-01 16:18:04,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:04,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:04,661 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:04,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash 269033586, now seen corresponding path program 6 times [2022-03-01 16:18:04,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:04,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301593320] [2022-03-01 16:18:04,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:04,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:18:04,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:04,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301593320] [2022-03-01 16:18:04,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301593320] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:04,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775407109] [2022-03-01 16:18:04,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:18:04,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:04,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:04,939 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) [2022-03-01 16:18:04,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 16:18:05,020 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:18:05,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:05,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-01 16:18:05,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:05,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:18:05,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-01 16:18:05,590 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 [2022-03-01 16:18:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:18:05,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:05,694 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_194 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_194) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-03-01 16:18:05,703 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:18:05,703 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 47 treesize of output 47 [2022-03-01 16:18:05,706 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 14 treesize of output 7 [2022-03-01 16:18:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:18:06,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775407109] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:06,045 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:06,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 38 [2022-03-01 16:18:06,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001620138] [2022-03-01 16:18:06,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:06,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-01 16:18:06,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-01 16:18:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1187, Unknown=1, NotChecked=70, Total=1406 [2022-03-01 16:18:06,047 INFO L87 Difference]: Start difference. First operand 668 states and 1596 transitions. Second operand has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 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) [2022-03-01 16:18:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:06,745 INFO L93 Difference]: Finished difference Result 1347 states and 3410 transitions. [2022-03-01 16:18:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-01 16:18:06,745 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 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 [2022-03-01 16:18:06,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:06,749 INFO L225 Difference]: With dead ends: 1347 [2022-03-01 16:18:06,749 INFO L226 Difference]: Without dead ends: 1217 [2022-03-01 16:18:06,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=372, Invalid=2711, Unknown=1, NotChecked=108, Total=3192 [2022-03-01 16:18:06,750 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 557 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:06,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 1945 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 599 Invalid, 0 Unknown, 185 Unchecked, 0.2s Time] [2022-03-01 16:18:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-03-01 16:18:06,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 661. [2022-03-01 16:18:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 2.396969696969697) internal successors, (1582), 660 states have internal predecessors, (1582), 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) [2022-03-01 16:18:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1582 transitions. [2022-03-01 16:18:06,766 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1582 transitions. Word has length 109 [2022-03-01 16:18:06,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:06,767 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1582 transitions. [2022-03-01 16:18:06,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 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) [2022-03-01 16:18:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1582 transitions. [2022-03-01 16:18:06,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-01 16:18:06,768 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:06,768 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-03-01 16:18:06,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:06,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:06,984 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1926579844, now seen corresponding path program 7 times [2022-03-01 16:18:06,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:06,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690000169] [2022-03-01 16:18:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:06,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:18:07,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:07,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690000169] [2022-03-01 16:18:07,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690000169] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:07,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958339045] [2022-03-01 16:18:07,037 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:18:07,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:07,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:07,038 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) [2022-03-01 16:18:07,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 16:18:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:07,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-01 16:18:07,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:18:07,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:18:07,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958339045] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:07,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:07,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-03-01 16:18:07,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241704906] [2022-03-01 16:18:07,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:07,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 16:18:07,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:07,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 16:18:07,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-01 16:18:07,411 INFO L87 Difference]: Start difference. First operand 661 states and 1582 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:18:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:07,436 INFO L93 Difference]: Finished difference Result 1753 states and 4401 transitions. [2022-03-01 16:18:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 16:18:07,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-03-01 16:18:07,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:07,441 INFO L225 Difference]: With dead ends: 1753 [2022-03-01 16:18:07,441 INFO L226 Difference]: Without dead ends: 1558 [2022-03-01 16:18:07,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-01 16:18:07,442 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 140 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:07,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 326 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:18:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2022-03-01 16:18:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1159. [2022-03-01 16:18:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.5673575129533677) internal successors, (2973), 1158 states have internal predecessors, (2973), 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) [2022-03-01 16:18:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2973 transitions. [2022-03-01 16:18:07,462 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2973 transitions. Word has length 112 [2022-03-01 16:18:07,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:07,462 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2973 transitions. [2022-03-01 16:18:07,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:18:07,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2973 transitions. [2022-03-01 16:18:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-03-01 16:18:07,464 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:07,464 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:07,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:07,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:07,681 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:07,682 INFO L85 PathProgramCache]: Analyzing trace with hash 856762834, now seen corresponding path program 8 times [2022-03-01 16:18:07,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:07,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936175193] [2022-03-01 16:18:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:07,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-01 16:18:07,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:07,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936175193] [2022-03-01 16:18:07,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936175193] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:07,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836900697] [2022-03-01 16:18:07,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:18:07,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:07,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:07,866 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) [2022-03-01 16:18:07,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 16:18:07,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:18:07,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:07,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 16:18:07,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-01 16:18:08,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-01 16:18:08,885 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836900697] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:08,885 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:08,885 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2022-03-01 16:18:08,885 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067806067] [2022-03-01 16:18:08,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:08,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-01 16:18:08,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:08,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-01 16:18:08,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1049, Unknown=0, NotChecked=0, Total=1332 [2022-03-01 16:18:08,886 INFO L87 Difference]: Start difference. First operand 1159 states and 2973 transitions. Second operand has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 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) [2022-03-01 16:18:09,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:09,385 INFO L93 Difference]: Finished difference Result 1723 states and 4315 transitions. [2022-03-01 16:18:09,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 16:18:09,385 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 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 115 [2022-03-01 16:18:09,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:09,390 INFO L225 Difference]: With dead ends: 1723 [2022-03-01 16:18:09,390 INFO L226 Difference]: Without dead ends: 1372 [2022-03-01 16:18:09,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=697, Invalid=2273, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 16:18:09,391 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 900 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:09,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 1014 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:18:09,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-03-01 16:18:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1166. [2022-03-01 16:18:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 2.5579399141630903) internal successors, (2980), 1165 states have internal predecessors, (2980), 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) [2022-03-01 16:18:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2980 transitions. [2022-03-01 16:18:09,411 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2980 transitions. Word has length 115 [2022-03-01 16:18:09,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:09,411 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 2980 transitions. [2022-03-01 16:18:09,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 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) [2022-03-01 16:18:09,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2980 transitions. [2022-03-01 16:18:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-01 16:18:09,413 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:09,413 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:09,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:09,627 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,SelfDestructingSolverStorable11 [2022-03-01 16:18:09,627 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:09,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1114783911, now seen corresponding path program 9 times [2022-03-01 16:18:09,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:09,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100541990] [2022-03-01 16:18:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:09,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:18:10,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:10,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100541990] [2022-03-01 16:18:10,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100541990] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:10,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904349304] [2022-03-01 16:18:10,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:18:10,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:10,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:10,031 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) [2022-03-01 16:18:10,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 16:18:10,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 16:18:10,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:10,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-01 16:18:10,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:10,851 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 [2022-03-01 16:18:11,105 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 [2022-03-01 16:18:11,166 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 [2022-03-01 16:18:11,669 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-01 16:18:11,669 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 26 treesize of output 10 [2022-03-01 16:18:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-01 16:18:11,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:13,237 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:18:13,238 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 63 treesize of output 51 [2022-03-01 16:18:13,248 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-01 16:18:13,248 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 324 treesize of output 297 [2022-03-01 16:18:13,261 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-01 16:18:13,261 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 286 treesize of output 226 [2022-03-01 16:18:13,271 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-01 16:18:13,272 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 226 treesize of output 196 [2022-03-01 16:18:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-01 16:18:13,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904349304] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:13,822 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:13,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28, 25] total 64 [2022-03-01 16:18:13,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698856267] [2022-03-01 16:18:13,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:13,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-01 16:18:13,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:13,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-01 16:18:13,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=3523, Unknown=53, NotChecked=0, Total=4032 [2022-03-01 16:18:13,824 INFO L87 Difference]: Start difference. First operand 1166 states and 2980 transitions. Second operand has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 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) [2022-03-01 16:18:16,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:16,474 INFO L93 Difference]: Finished difference Result 5035 states and 13427 transitions. [2022-03-01 16:18:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-01 16:18:16,474 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 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 122 [2022-03-01 16:18:16,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:16,489 INFO L225 Difference]: With dead ends: 5035 [2022-03-01 16:18:16,489 INFO L226 Difference]: Without dead ends: 4642 [2022-03-01 16:18:16,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3642 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1796, Invalid=11033, Unknown=53, NotChecked=0, Total=12882 [2022-03-01 16:18:16,492 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 2185 mSDsluCounter, 5006 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 4754 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1083 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:16,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 4754 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 865 Invalid, 0 Unknown, 1083 Unchecked, 0.3s Time] [2022-03-01 16:18:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2022-03-01 16:18:16,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 2797. [2022-03-01 16:18:16,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2796 states have (on average 2.724606580829757) internal successors, (7618), 2796 states have internal predecessors, (7618), 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) [2022-03-01 16:18:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 7618 transitions. [2022-03-01 16:18:16,553 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 7618 transitions. Word has length 122 [2022-03-01 16:18:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:16,553 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 7618 transitions. [2022-03-01 16:18:16,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 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) [2022-03-01 16:18:16,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 7618 transitions. [2022-03-01 16:18:16,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-01 16:18:16,559 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:16,559 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:16,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:16,772 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,SelfDestructingSolverStorable12 [2022-03-01 16:18:16,772 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:16,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:16,772 INFO L85 PathProgramCache]: Analyzing trace with hash -776672213, now seen corresponding path program 10 times [2022-03-01 16:18:16,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:16,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391619699] [2022-03-01 16:18:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:16,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:18:17,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:17,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391619699] [2022-03-01 16:18:17,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391619699] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:17,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521966756] [2022-03-01 16:18:17,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:18:17,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:17,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:17,104 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) [2022-03-01 16:18:17,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 16:18:17,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:18:17,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:17,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-01 16:18:17,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:17,743 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 15 treesize of output 7 [2022-03-01 16:18:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:18:17,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:17,913 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 16:18:17,916 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 28 treesize of output 13 [2022-03-01 16:18:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:18:18,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521966756] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:18,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:18,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 11] total 30 [2022-03-01 16:18:18,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182608629] [2022-03-01 16:18:18,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:18,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-01 16:18:18,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:18,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-01 16:18:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-03-01 16:18:18,178 INFO L87 Difference]: Start difference. First operand 2797 states and 7618 transitions. Second operand has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 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) [2022-03-01 16:18:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:19,529 INFO L93 Difference]: Finished difference Result 10691 states and 29352 transitions. [2022-03-01 16:18:19,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-01 16:18:19,529 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 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 122 [2022-03-01 16:18:19,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:19,567 INFO L225 Difference]: With dead ends: 10691 [2022-03-01 16:18:19,567 INFO L226 Difference]: Without dead ends: 8450 [2022-03-01 16:18:19,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 223 SyntacticMatches, 14 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3854 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=987, Invalid=9113, Unknown=0, NotChecked=0, Total=10100 [2022-03-01 16:18:19,570 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1446 mSDsluCounter, 2876 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:19,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 2838 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:18:19,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8450 states. [2022-03-01 16:18:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8450 to 2092. [2022-03-01 16:18:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2091 states have (on average 2.6652319464371113) internal successors, (5573), 2091 states have internal predecessors, (5573), 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) [2022-03-01 16:18:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 5573 transitions. [2022-03-01 16:18:19,664 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 5573 transitions. Word has length 122 [2022-03-01 16:18:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:19,665 INFO L470 AbstractCegarLoop]: Abstraction has 2092 states and 5573 transitions. [2022-03-01 16:18:19,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 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) [2022-03-01 16:18:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 5573 transitions. [2022-03-01 16:18:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-01 16:18:19,669 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:19,669 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:19,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:19,885 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,SelfDestructingSolverStorable13 [2022-03-01 16:18:19,885 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:19,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:19,887 INFO L85 PathProgramCache]: Analyzing trace with hash 328572843, now seen corresponding path program 11 times [2022-03-01 16:18:19,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:19,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206136714] [2022-03-01 16:18:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:19,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:18:20,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:20,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206136714] [2022-03-01 16:18:20,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206136714] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:20,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645317344] [2022-03-01 16:18:20,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:18:20,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:20,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:20,291 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) [2022-03-01 16:18:20,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 16:18:20,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 16:18:20,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:20,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-01 16:18:20,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:20,426 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 [2022-03-01 16:18:20,510 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 16:18:20,511 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 [2022-03-01 16:18:20,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-01 16:18:20,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-01 16:18:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:18:20,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:20,925 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_352 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_352) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-03-01 16:18:20,935 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:18:20,935 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 47 treesize of output 47 [2022-03-01 16:18:20,938 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 14 treesize of output 7 [2022-03-01 16:18:21,367 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 [2022-03-01 16:18:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:18:21,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645317344] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:21,385 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:21,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 39 [2022-03-01 16:18:21,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413803145] [2022-03-01 16:18:21,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:21,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-01 16:18:21,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:21,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-01 16:18:21,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1264, Unknown=1, NotChecked=72, Total=1482 [2022-03-01 16:18:21,386 INFO L87 Difference]: Start difference. First operand 2092 states and 5573 transitions. Second operand has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 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) [2022-03-01 16:18:22,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:22,376 INFO L93 Difference]: Finished difference Result 4030 states and 10893 transitions. [2022-03-01 16:18:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:18:22,377 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 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 122 [2022-03-01 16:18:22,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:22,385 INFO L225 Difference]: With dead ends: 4030 [2022-03-01 16:18:22,385 INFO L226 Difference]: Without dead ends: 3884 [2022-03-01 16:18:22,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=575, Invalid=4540, Unknown=1, NotChecked=140, Total=5256 [2022-03-01 16:18:22,387 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 811 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:22,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 2386 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 934 Invalid, 0 Unknown, 231 Unchecked, 0.3s Time] [2022-03-01 16:18:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-03-01 16:18:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 2046. [2022-03-01 16:18:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 2045 states have (on average 2.6533007334963323) internal successors, (5426), 2045 states have internal predecessors, (5426), 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) [2022-03-01 16:18:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 5426 transitions. [2022-03-01 16:18:22,439 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 5426 transitions. Word has length 122 [2022-03-01 16:18:22,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:22,439 INFO L470 AbstractCegarLoop]: Abstraction has 2046 states and 5426 transitions. [2022-03-01 16:18:22,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 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) [2022-03-01 16:18:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 5426 transitions. [2022-03-01 16:18:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-03-01 16:18:22,442 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:22,443 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:22,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:22,653 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,SelfDestructingSolverStorable14 [2022-03-01 16:18:22,653 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:22,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash -192365041, now seen corresponding path program 12 times [2022-03-01 16:18:22,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:22,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044507333] [2022-03-01 16:18:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:22,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:18:22,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:22,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044507333] [2022-03-01 16:18:22,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044507333] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:22,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287275445] [2022-03-01 16:18:22,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:18:22,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:22,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:22,715 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) [2022-03-01 16:18:22,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 16:18:22,967 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-01 16:18:22,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:22,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 16:18:22,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:18:23,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:18:23,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287275445] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:23,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:23,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-03-01 16:18:23,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146950024] [2022-03-01 16:18:23,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:23,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 16:18:23,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:23,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 16:18:23,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-01 16:18:23,196 INFO L87 Difference]: Start difference. First operand 2046 states and 5426 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 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) [2022-03-01 16:18:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:23,224 INFO L93 Difference]: Finished difference Result 5115 states and 13883 transitions. [2022-03-01 16:18:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 16:18:23,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 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 125 [2022-03-01 16:18:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:23,247 INFO L225 Difference]: With dead ends: 5115 [2022-03-01 16:18:23,247 INFO L226 Difference]: Without dead ends: 4571 [2022-03-01 16:18:23,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-01 16:18:23,248 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 209 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:23,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 310 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:18:23,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2022-03-01 16:18:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 3568. [2022-03-01 16:18:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 3567 states have (on average 2.747687132043734) internal successors, (9801), 3567 states have internal predecessors, (9801), 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) [2022-03-01 16:18:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 9801 transitions. [2022-03-01 16:18:23,344 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 9801 transitions. Word has length 125 [2022-03-01 16:18:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:23,344 INFO L470 AbstractCegarLoop]: Abstraction has 3568 states and 9801 transitions. [2022-03-01 16:18:23,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 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) [2022-03-01 16:18:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 9801 transitions. [2022-03-01 16:18:23,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-01 16:18:23,350 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:23,350 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:23,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:23,567 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,SelfDestructingSolverStorable15 [2022-03-01 16:18:23,567 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:23,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash -48474905, now seen corresponding path program 13 times [2022-03-01 16:18:23,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:23,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127854425] [2022-03-01 16:18:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-01 16:18:23,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:23,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127854425] [2022-03-01 16:18:23,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127854425] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:23,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283028427] [2022-03-01 16:18:23,747 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:18:23,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:23,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:23,748 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) [2022-03-01 16:18:23,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 16:18:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:23,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-01 16:18:23,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-01 16:18:24,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-01 16:18:24,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283028427] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:24,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:24,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 16:18:24,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736407871] [2022-03-01 16:18:24,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:24,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-01 16:18:24,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:24,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-01 16:18:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1655, Unknown=0, NotChecked=0, Total=2070 [2022-03-01 16:18:24,822 INFO L87 Difference]: Start difference. First operand 3568 states and 9801 transitions. Second operand has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 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) [2022-03-01 16:18:25,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:25,367 INFO L93 Difference]: Finished difference Result 2949 states and 7480 transitions. [2022-03-01 16:18:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:18:25,368 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 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 128 [2022-03-01 16:18:25,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:25,373 INFO L225 Difference]: With dead ends: 2949 [2022-03-01 16:18:25,373 INFO L226 Difference]: Without dead ends: 1908 [2022-03-01 16:18:25,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1088, Invalid=3882, Unknown=0, NotChecked=0, Total=4970 [2022-03-01 16:18:25,375 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 993 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:25,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 1529 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:18:25,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-03-01 16:18:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1666. [2022-03-01 16:18:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 2.601201201201201) internal successors, (4331), 1665 states have internal predecessors, (4331), 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) [2022-03-01 16:18:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4331 transitions. [2022-03-01 16:18:25,422 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4331 transitions. Word has length 128 [2022-03-01 16:18:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:25,422 INFO L470 AbstractCegarLoop]: Abstraction has 1666 states and 4331 transitions. [2022-03-01 16:18:25,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 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) [2022-03-01 16:18:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4331 transitions. [2022-03-01 16:18:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-01 16:18:25,425 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:25,425 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:25,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:25,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-01 16:18:25,650 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:25,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash 552932526, now seen corresponding path program 14 times [2022-03-01 16:18:25,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:25,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107155726] [2022-03-01 16:18:25,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:25,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:18:26,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:26,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107155726] [2022-03-01 16:18:26,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107155726] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:26,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027348770] [2022-03-01 16:18:26,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:18:26,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:26,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:26,037 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) [2022-03-01 16:18:26,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 16:18:26,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:18:26,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:26,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-01 16:18:26,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:26,730 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 [2022-03-01 16:18:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:18:26,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:26,881 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 16:18:26,881 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 28 treesize of output 13 [2022-03-01 16:18:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-01 16:18:27,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027348770] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:27,193 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:27,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 13] total 47 [2022-03-01 16:18:27,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904780075] [2022-03-01 16:18:27,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:27,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 16:18:27,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:27,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 16:18:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1976, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 16:18:27,195 INFO L87 Difference]: Start difference. First operand 1666 states and 4331 transitions. Second operand has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 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) [2022-03-01 16:18:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:29,941 INFO L93 Difference]: Finished difference Result 11428 states and 30191 transitions. [2022-03-01 16:18:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-01 16:18:29,941 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 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 135 [2022-03-01 16:18:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:29,954 INFO L225 Difference]: With dead ends: 11428 [2022-03-01 16:18:29,954 INFO L226 Difference]: Without dead ends: 7904 [2022-03-01 16:18:29,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 240 SyntacticMatches, 10 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9276 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1756, Invalid=22114, Unknown=0, NotChecked=0, Total=23870 [2022-03-01 16:18:29,956 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2735 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 7167 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:29,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 7167 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3011 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:18:29,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2022-03-01 16:18:29,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 976. [2022-03-01 16:18:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 2.438974358974359) internal successors, (2378), 975 states have internal predecessors, (2378), 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) [2022-03-01 16:18:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 2378 transitions. [2022-03-01 16:18:29,997 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 2378 transitions. Word has length 135 [2022-03-01 16:18:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:29,997 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 2378 transitions. [2022-03-01 16:18:29,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 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) [2022-03-01 16:18:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 2378 transitions. [2022-03-01 16:18:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-01 16:18:29,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:29,999 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:30,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:30,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:30,214 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:30,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash 532157394, now seen corresponding path program 15 times [2022-03-01 16:18:30,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:30,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782795783] [2022-03-01 16:18:30,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:30,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:18:30,726 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:30,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782795783] [2022-03-01 16:18:30,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782795783] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:30,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945933866] [2022-03-01 16:18:30,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:18:30,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:30,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:30,728 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) [2022-03-01 16:18:30,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 16:18:31,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-01 16:18:31,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:31,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-01 16:18:31,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:31,977 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 [2022-03-01 16:18:32,172 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 [2022-03-01 16:18:32,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:18:32,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-03-01 16:18:32,834 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-01 16:18:32,835 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 26 treesize of output 10 [2022-03-01 16:18:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-01 16:18:32,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:34,621 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:18:34,621 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 60 treesize of output 48 [2022-03-01 16:18:34,633 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:18:34,633 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 184 treesize of output 176 [2022-03-01 16:18:34,659 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:18:34,660 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 157 treesize of output 155 [2022-03-01 16:18:34,666 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 118 treesize of output 94 [2022-03-01 16:18:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-01 16:18:35,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945933866] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:35,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:35,786 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 31, 31] total 79 [2022-03-01 16:18:35,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548673453] [2022-03-01 16:18:35,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:35,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-03-01 16:18:35,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-03-01 16:18:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=5620, Unknown=19, NotChecked=0, Total=6162 [2022-03-01 16:18:35,789 INFO L87 Difference]: Start difference. First operand 976 states and 2378 transitions. Second operand has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 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) [2022-03-01 16:18:38,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:38,938 INFO L93 Difference]: Finished difference Result 7037 states and 18862 transitions. [2022-03-01 16:18:38,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-01 16:18:38,939 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 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 135 [2022-03-01 16:18:38,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:38,951 INFO L225 Difference]: With dead ends: 7037 [2022-03-01 16:18:38,951 INFO L226 Difference]: Without dead ends: 6811 [2022-03-01 16:18:38,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5222 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2188, Invalid=15080, Unknown=24, NotChecked=0, Total=17292 [2022-03-01 16:18:38,953 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 2570 mSDsluCounter, 7021 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 7013 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 736 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:38,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2570 Valid, 7013 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1329 Invalid, 0 Unknown, 736 Unchecked, 0.4s Time] [2022-03-01 16:18:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2022-03-01 16:18:39,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 3828. [2022-03-01 16:18:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3827 states have (on average 2.7285079696890513) internal successors, (10442), 3827 states have internal predecessors, (10442), 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) [2022-03-01 16:18:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 10442 transitions. [2022-03-01 16:18:39,030 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 10442 transitions. Word has length 135 [2022-03-01 16:18:39,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:39,030 INFO L470 AbstractCegarLoop]: Abstraction has 3828 states and 10442 transitions. [2022-03-01 16:18:39,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 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) [2022-03-01 16:18:39,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 10442 transitions. [2022-03-01 16:18:39,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-01 16:18:39,036 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:39,037 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:39,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:39,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:39,252 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:39,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1359298730, now seen corresponding path program 16 times [2022-03-01 16:18:39,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:39,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514567974] [2022-03-01 16:18:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:39,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:18:39,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:39,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514567974] [2022-03-01 16:18:39,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514567974] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:39,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460837359] [2022-03-01 16:18:39,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:18:39,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:39,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:39,721 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) [2022-03-01 16:18:39,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 16:18:39,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:18:39,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:39,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-01 16:18:39,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:39,859 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 [2022-03-01 16:18:40,015 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 16:18:40,015 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 [2022-03-01 16:18:40,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-03-01 16:18:40,785 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 15 treesize of output 7 [2022-03-01 16:18:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:18:40,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:40,929 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_530 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_530) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)))) is different from false [2022-03-01 16:18:40,937 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:18:40,937 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 47 treesize of output 47 [2022-03-01 16:18:40,940 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 14 treesize of output 7 [2022-03-01 16:18:41,534 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 [2022-03-01 16:18:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-01 16:18:41,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460837359] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:41,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:41,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 20] total 46 [2022-03-01 16:18:41,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908238928] [2022-03-01 16:18:41,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:41,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-01 16:18:41,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:41,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-01 16:18:41,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1808, Unknown=1, NotChecked=86, Total=2070 [2022-03-01 16:18:41,577 INFO L87 Difference]: Start difference. First operand 3828 states and 10442 transitions. Second operand has 46 states, 46 states have (on average 5.260869565217392) internal successors, (242), 46 states have internal predecessors, (242), 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) [2022-03-01 16:18:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:43,100 INFO L93 Difference]: Finished difference Result 8075 states and 22231 transitions. [2022-03-01 16:18:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 16:18:43,100 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.260869565217392) internal successors, (242), 46 states have internal predecessors, (242), 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 135 [2022-03-01 16:18:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:43,113 INFO L225 Difference]: With dead ends: 8075 [2022-03-01 16:18:43,113 INFO L226 Difference]: Without dead ends: 7929 [2022-03-01 16:18:43,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 248 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=748, Invalid=7265, Unknown=1, NotChecked=176, Total=8190 [2022-03-01 16:18:43,116 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 1431 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3374 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 395 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:43,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 3374 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1445 Invalid, 0 Unknown, 395 Unchecked, 0.5s Time] [2022-03-01 16:18:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7929 states. [2022-03-01 16:18:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7929 to 3221. [2022-03-01 16:18:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 3220 states have (on average 2.710248447204969) internal successors, (8727), 3220 states have internal predecessors, (8727), 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) [2022-03-01 16:18:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 8727 transitions. [2022-03-01 16:18:43,202 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 8727 transitions. Word has length 135 [2022-03-01 16:18:43,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:43,202 INFO L470 AbstractCegarLoop]: Abstraction has 3221 states and 8727 transitions. [2022-03-01 16:18:43,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.260869565217392) internal successors, (242), 46 states have internal predecessors, (242), 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) [2022-03-01 16:18:43,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 8727 transitions. [2022-03-01 16:18:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-01 16:18:43,208 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:43,208 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:43,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:43,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:43,419 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:43,419 INFO L85 PathProgramCache]: Analyzing trace with hash -819423064, now seen corresponding path program 17 times [2022-03-01 16:18:43,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:43,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463997673] [2022-03-01 16:18:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:43,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-01 16:18:43,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:43,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463997673] [2022-03-01 16:18:43,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463997673] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:43,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587070261] [2022-03-01 16:18:43,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:18:43,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:43,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:43,482 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) [2022-03-01 16:18:43,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 16:18:43,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-01 16:18:43,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:43,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-01 16:18:43,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-01 16:18:43,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-01 16:18:44,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587070261] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:44,021 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:44,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-03-01 16:18:44,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739956292] [2022-03-01 16:18:44,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:44,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 16:18:44,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 16:18:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-01 16:18:44,022 INFO L87 Difference]: Start difference. First operand 3221 states and 8727 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 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) [2022-03-01 16:18:44,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:44,080 INFO L93 Difference]: Finished difference Result 7836 states and 21310 transitions. [2022-03-01 16:18:44,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 16:18:44,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 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 138 [2022-03-01 16:18:44,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:44,092 INFO L225 Difference]: With dead ends: 7836 [2022-03-01 16:18:44,092 INFO L226 Difference]: Without dead ends: 6991 [2022-03-01 16:18:44,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-01 16:18:44,093 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 224 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:44,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 416 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:18:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6991 states. [2022-03-01 16:18:44,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6991 to 5591. [2022-03-01 16:18:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5591 states, 5590 states have (on average 2.750447227191413) internal successors, (15375), 5590 states have internal predecessors, (15375), 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) [2022-03-01 16:18:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 15375 transitions. [2022-03-01 16:18:44,183 INFO L78 Accepts]: Start accepts. Automaton has 5591 states and 15375 transitions. Word has length 138 [2022-03-01 16:18:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:44,183 INFO L470 AbstractCegarLoop]: Abstraction has 5591 states and 15375 transitions. [2022-03-01 16:18:44,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 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) [2022-03-01 16:18:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5591 states and 15375 transitions. [2022-03-01 16:18:44,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 16:18:44,194 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:44,194 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:44,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:44,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:44,413 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:44,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash -272799818, now seen corresponding path program 18 times [2022-03-01 16:18:44,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:44,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019874774] [2022-03-01 16:18:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 23 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-03-01 16:18:44,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:44,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019874774] [2022-03-01 16:18:44,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019874774] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:44,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506835498] [2022-03-01 16:18:44,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:18:44,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:44,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:44,720 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) [2022-03-01 16:18:44,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-01 16:18:45,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-01 16:18:45,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:45,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 16:18:45,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-01 16:18:45,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-01 16:18:46,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506835498] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:46,113 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:46,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 50 [2022-03-01 16:18:46,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743244064] [2022-03-01 16:18:46,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:46,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-01 16:18:46,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:46,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-01 16:18:46,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2040, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 16:18:46,114 INFO L87 Difference]: Start difference. First operand 5591 states and 15375 transitions. Second operand has 50 states, 50 states have (on average 6.02) internal successors, (301), 50 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:18:47,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:47,051 INFO L93 Difference]: Finished difference Result 9832 states and 26297 transitions. [2022-03-01 16:18:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 16:18:47,052 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.02) internal successors, (301), 50 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-01 16:18:47,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:47,067 INFO L225 Difference]: With dead ends: 9832 [2022-03-01 16:18:47,067 INFO L226 Difference]: Without dead ends: 9307 [2022-03-01 16:18:47,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1584, Invalid=5898, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 16:18:47,068 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 2796 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:47,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2796 Valid, 1894 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:18:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2022-03-01 16:18:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 4574. [2022-03-01 16:18:47,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 2.728187185654931) internal successors, (12476), 4573 states have internal predecessors, (12476), 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) [2022-03-01 16:18:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12476 transitions. [2022-03-01 16:18:47,188 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12476 transitions. Word has length 141 [2022-03-01 16:18:47,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:47,188 INFO L470 AbstractCegarLoop]: Abstraction has 4574 states and 12476 transitions. [2022-03-01 16:18:47,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.02) internal successors, (301), 50 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:18:47,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12476 transitions. [2022-03-01 16:18:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 16:18:47,196 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:47,196 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:47,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:47,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:47,412 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:47,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1589161620, now seen corresponding path program 19 times [2022-03-01 16:18:47,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:47,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060277586] [2022-03-01 16:18:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:47,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 33 proven. 61 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-01 16:18:47,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:47,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060277586] [2022-03-01 16:18:47,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060277586] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:47,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494401912] [2022-03-01 16:18:47,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:18:47,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:47,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:47,676 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) [2022-03-01 16:18:47,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-01 16:18:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:47,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-01 16:18:47,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 48 proven. 46 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-01 16:18:48,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 44 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-01 16:18:49,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494401912] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:49,048 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:49,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 58 [2022-03-01 16:18:49,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201281733] [2022-03-01 16:18:49,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:49,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-03-01 16:18:49,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:49,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-03-01 16:18:49,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2664, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 16:18:49,049 INFO L87 Difference]: Start difference. First operand 4574 states and 12476 transitions. Second operand has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 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) [2022-03-01 16:18:50,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:50,163 INFO L93 Difference]: Finished difference Result 3620 states and 9296 transitions. [2022-03-01 16:18:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-01 16:18:50,164 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 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 [2022-03-01 16:18:50,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:50,167 INFO L225 Difference]: With dead ends: 3620 [2022-03-01 16:18:50,168 INFO L226 Difference]: Without dead ends: 2537 [2022-03-01 16:18:50,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3125 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1721, Invalid=6651, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 16:18:50,169 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 1212 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:50,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 2099 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:18:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-03-01 16:18:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2259. [2022-03-01 16:18:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2258 states have (on average 2.6266607617360496) internal successors, (5931), 2258 states have internal predecessors, (5931), 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) [2022-03-01 16:18:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 5931 transitions. [2022-03-01 16:18:50,203 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 5931 transitions. Word has length 141 [2022-03-01 16:18:50,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:50,203 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 5931 transitions. [2022-03-01 16:18:50,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 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) [2022-03-01 16:18:50,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 5931 transitions. [2022-03-01 16:18:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-01 16:18:50,207 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:50,207 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:50,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:50,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:50,424 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1333837113, now seen corresponding path program 20 times [2022-03-01 16:18:50,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:50,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952938162] [2022-03-01 16:18:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:50,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:18:51,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:51,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952938162] [2022-03-01 16:18:51,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952938162] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:51,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499641932] [2022-03-01 16:18:51,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:18:51,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:51,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:51,074 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) [2022-03-01 16:18:51,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-01 16:18:51,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:18:51,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:51,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-01 16:18:51,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:51,818 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 [2022-03-01 16:18:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:18:51,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:51,940 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 16:18:51,940 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 28 treesize of output 13 [2022-03-01 16:18:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-01 16:18:52,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499641932] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:18:52,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:18:52,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 15] total 57 [2022-03-01 16:18:52,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722929019] [2022-03-01 16:18:52,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:18:52,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-01 16:18:52,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:18:52,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-01 16:18:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2963, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:18:52,220 INFO L87 Difference]: Start difference. First operand 2259 states and 5931 transitions. Second operand has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 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) [2022-03-01 16:18:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:18:55,317 INFO L93 Difference]: Finished difference Result 18188 states and 48276 transitions. [2022-03-01 16:18:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-03-01 16:18:55,318 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 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 [2022-03-01 16:18:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:18:55,338 INFO L225 Difference]: With dead ends: 18188 [2022-03-01 16:18:55,338 INFO L226 Difference]: Without dead ends: 12909 [2022-03-01 16:18:55,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 258 SyntacticMatches, 12 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16850 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2746, Invalid=39484, Unknown=0, NotChecked=0, Total=42230 [2022-03-01 16:18:55,341 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 4243 mSDsluCounter, 7762 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 7385 SdHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 16:18:55,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4243 Valid, 7385 Invalid, 3481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 16:18:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12909 states. [2022-03-01 16:18:55,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12909 to 1130. [2022-03-01 16:18:55,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 2.4526129317980514) internal successors, (2769), 1129 states have internal predecessors, (2769), 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) [2022-03-01 16:18:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2769 transitions. [2022-03-01 16:18:55,406 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2769 transitions. Word has length 148 [2022-03-01 16:18:55,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:18:55,406 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2769 transitions. [2022-03-01 16:18:55,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 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) [2022-03-01 16:18:55,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2769 transitions. [2022-03-01 16:18:55,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-01 16:18:55,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:18:55,408 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:18:55,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-01 16:18:55,624 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,SelfDestructingSolverStorable23 [2022-03-01 16:18:55,624 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:18:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:18:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash -389869621, now seen corresponding path program 21 times [2022-03-01 16:18:55,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:18:55,625 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456517265] [2022-03-01 16:18:55,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:18:55,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:18:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:18:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:18:56,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:18:56,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456517265] [2022-03-01 16:18:56,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456517265] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:18:56,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448803175] [2022-03-01 16:18:56,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:18:56,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:18:56,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:18:56,241 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) [2022-03-01 16:18:56,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-01 16:18:56,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-01 16:18:56,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:18:56,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-01 16:18:56,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:18:57,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:18:57,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-03-01 16:18:58,556 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-01 16:18:58,556 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 26 treesize of output 10 [2022-03-01 16:18:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 48 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:18:58,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:18:58,988 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:18:58,988 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 45 treesize of output 45 [2022-03-01 16:18:58,991 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 13 treesize of output 7 [2022-03-01 16:19:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 36 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:19:01,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448803175] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:19:01,890 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:19:01,890 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 37, 37] total 95 [2022-03-01 16:19:01,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206952316] [2022-03-01 16:19:01,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:19:01,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-03-01 16:19:01,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:19:01,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-03-01 16:19:01,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=8159, Unknown=0, NotChecked=0, Total=8930 [2022-03-01 16:19:01,891 INFO L87 Difference]: Start difference. First operand 1130 states and 2769 transitions. Second operand has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 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) [2022-03-01 16:19:16,247 WARN L228 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 102 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:19:50,587 WARN L228 SmtUtils]: Spent 21.57s on a formula simplification. DAG size of input: 61 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:20:01,505 WARN L228 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 62 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:22:57,239 WARN L228 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 95 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:23:30,318 WARN L228 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 97 DAG size of output: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:23:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:47,106 INFO L93 Difference]: Finished difference Result 127041 states and 320089 transitions. [2022-03-01 16:23:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 679 states. [2022-03-01 16:23:47,106 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 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 [2022-03-01 16:23:47,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:47,427 INFO L225 Difference]: With dead ends: 127041 [2022-03-01 16:23:47,427 INFO L226 Difference]: Without dead ends: 112908 [2022-03-01 16:23:47,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1724 GetRequests, 598 SyntacticMatches, 361 SemanticMatches, 765 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 406106 ImplicationChecksByTransitivity, 270.6s TimeCoverageRelationStatistics Valid=77107, Invalid=510346, Unknown=69, NotChecked=0, Total=587522 [2022-03-01 16:23:47,462 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 8989 mSDsluCounter, 26550 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8989 SdHoareTripleChecker+Valid, 21577 SdHoareTripleChecker+Invalid, 28117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23431 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:47,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8989 Valid, 21577 Invalid, 28117 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [702 Valid, 3984 Invalid, 0 Unknown, 23431 Unchecked, 2.2s Time] [2022-03-01 16:23:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112908 states. [2022-03-01 16:23:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112908 to 48574. [2022-03-01 16:23:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48574 states, 48573 states have (on average 2.8174088485372533) internal successors, (136850), 48573 states have internal predecessors, (136850), 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) [2022-03-01 16:23:49,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48574 states to 48574 states and 136850 transitions. [2022-03-01 16:23:49,401 INFO L78 Accepts]: Start accepts. Automaton has 48574 states and 136850 transitions. Word has length 148 [2022-03-01 16:23:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:49,401 INFO L470 AbstractCegarLoop]: Abstraction has 48574 states and 136850 transitions. [2022-03-01 16:23:49,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 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) [2022-03-01 16:23:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 48574 states and 136850 transitions. [2022-03-01 16:23:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-01 16:23:49,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:49,485 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:49,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:49,701 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,SelfDestructingSolverStorable24 [2022-03-01 16:23:49,702 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:49,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:49,702 INFO L85 PathProgramCache]: Analyzing trace with hash 726491987, now seen corresponding path program 22 times [2022-03-01 16:23:49,702 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:49,702 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390716284] [2022-03-01 16:23:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:49,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:23:50,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:50,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390716284] [2022-03-01 16:23:50,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390716284] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:50,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352531786] [2022-03-01 16:23:50,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:23:50,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:50,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:50,364 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) [2022-03-01 16:23:50,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-01 16:23:50,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:23:50,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:50,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-01 16:23:50,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:51,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:23:51,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-01 16:23:52,042 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 15 treesize of output 7 [2022-03-01 16:23:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:23:52,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:52,263 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_760 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_760) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 16)))) is different from false [2022-03-01 16:23:52,272 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:23:52,273 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 47 treesize of output 47 [2022-03-01 16:23:52,275 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 14 treesize of output 7 [2022-03-01 16:23:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-01 16:23:52,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352531786] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:52,949 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:52,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 22] total 72 [2022-03-01 16:23:52,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246415200] [2022-03-01 16:23:52,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:52,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-01 16:23:52,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-01 16:23:52,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4645, Unknown=1, NotChecked=138, Total=5112 [2022-03-01 16:23:52,951 INFO L87 Difference]: Start difference. First operand 48574 states and 136850 transitions. Second operand has 72 states, 72 states have (on average 4.708333333333333) internal successors, (339), 72 states have internal predecessors, (339), 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) [2022-03-01 16:23:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:55,641 INFO L93 Difference]: Finished difference Result 101269 states and 279482 transitions. [2022-03-01 16:23:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-01 16:23:55,642 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.708333333333333) internal successors, (339), 72 states have internal predecessors, (339), 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 [2022-03-01 16:23:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:55,916 INFO L225 Difference]: With dead ends: 101269 [2022-03-01 16:23:55,917 INFO L226 Difference]: Without dead ends: 101123 [2022-03-01 16:23:55,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 4962 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1150, Invalid=14855, Unknown=1, NotChecked=250, Total=16256 [2022-03-01 16:23:55,918 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 1851 mSDsluCounter, 5812 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 5673 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 340 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:55,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1851 Valid, 5673 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2745 Invalid, 0 Unknown, 340 Unchecked, 1.0s Time] [2022-03-01 16:23:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101123 states. [2022-03-01 16:23:57,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101123 to 47895. [2022-03-01 16:23:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47895 states, 47894 states have (on average 2.8156762851296615) internal successors, (134854), 47894 states have internal predecessors, (134854), 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) [2022-03-01 16:23:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47895 states to 47895 states and 134854 transitions. [2022-03-01 16:23:57,503 INFO L78 Accepts]: Start accepts. Automaton has 47895 states and 134854 transitions. Word has length 148 [2022-03-01 16:23:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:23:57,503 INFO L470 AbstractCegarLoop]: Abstraction has 47895 states and 134854 transitions. [2022-03-01 16:23:57,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.708333333333333) internal successors, (339), 72 states have internal predecessors, (339), 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) [2022-03-01 16:23:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 47895 states and 134854 transitions. [2022-03-01 16:23:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-01 16:23:57,576 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:23:57,576 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:23:57,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-01 16:23:57,791 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,SelfDestructingSolverStorable25 [2022-03-01 16:23:57,791 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:23:57,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:23:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1336735761, now seen corresponding path program 23 times [2022-03-01 16:23:57,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:23:57,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337394233] [2022-03-01 16:23:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:23:57,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:23:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:23:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-01 16:23:57,847 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:23:57,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337394233] [2022-03-01 16:23:57,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337394233] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:23:57,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097511592] [2022-03-01 16:23:57,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:23:57,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:23:57,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:23:57,848 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) [2022-03-01 16:23:57,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-01 16:23:58,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-01 16:23:58,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:23:58,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:23:58,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:23:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-01 16:23:58,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-01 16:23:58,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097511592] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:23:58,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:23:58,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-03-01 16:23:58,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956822673] [2022-03-01 16:23:58,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:23:58,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 16:23:58,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:23:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 16:23:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:23:58,298 INFO L87 Difference]: Start difference. First operand 47895 states and 134854 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-03-01 16:23:58,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:23:58,909 INFO L93 Difference]: Finished difference Result 100523 states and 283158 transitions. [2022-03-01 16:23:58,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-01 16:23:58,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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 [2022-03-01 16:23:58,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:23:59,176 INFO L225 Difference]: With dead ends: 100523 [2022-03-01 16:23:59,177 INFO L226 Difference]: Without dead ends: 95826 [2022-03-01 16:23:59,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:23:59,177 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 463 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:23:59,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 384 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:23:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95826 states. [2022-03-01 16:24:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95826 to 78644. [2022-03-01 16:24:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78644 states, 78643 states have (on average 2.8689775313759647) internal successors, (225625), 78643 states have internal predecessors, (225625), 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) [2022-03-01 16:24:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78644 states to 78644 states and 225625 transitions. [2022-03-01 16:24:01,525 INFO L78 Accepts]: Start accepts. Automaton has 78644 states and 225625 transitions. Word has length 151 [2022-03-01 16:24:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:01,525 INFO L470 AbstractCegarLoop]: Abstraction has 78644 states and 225625 transitions. [2022-03-01 16:24:01,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2022-03-01 16:24:01,526 INFO L276 IsEmpty]: Start isEmpty. Operand 78644 states and 225625 transitions. [2022-03-01 16:24:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-01 16:24:01,910 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:01,910 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:01,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:02,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:02,128 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:02,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:02,129 INFO L85 PathProgramCache]: Analyzing trace with hash -339287545, now seen corresponding path program 24 times [2022-03-01 16:24:02,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:02,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748756633] [2022-03-01 16:24:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:02,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 36 proven. 90 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-01 16:24:02,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:02,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748756633] [2022-03-01 16:24:02,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748756633] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:02,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177415267] [2022-03-01 16:24:02,434 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:24:02,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:02,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:02,435 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) [2022-03-01 16:24:02,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-01 16:24:02,929 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-01 16:24:02,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:02,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-01 16:24:02,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 51 proven. 75 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-01 16:24:03,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 36 proven. 90 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-01 16:24:04,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177415267] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:04,284 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:04,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 62 [2022-03-01 16:24:04,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449868248] [2022-03-01 16:24:04,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:04,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-01 16:24:04,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-01 16:24:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=3181, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:24:04,292 INFO L87 Difference]: Start difference. First operand 78644 states and 225625 transitions. Second operand has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 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) [2022-03-01 16:24:05,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:05,314 INFO L93 Difference]: Finished difference Result 83890 states and 221163 transitions. [2022-03-01 16:24:05,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 16:24:05,315 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 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 154 [2022-03-01 16:24:05,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:05,320 INFO L225 Difference]: With dead ends: 83890 [2022-03-01 16:24:05,320 INFO L226 Difference]: Without dead ends: 3259 [2022-03-01 16:24:05,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3311 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1596, Invalid=7146, Unknown=0, NotChecked=0, Total=8742 [2022-03-01 16:24:05,327 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 1400 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:05,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1400 Valid, 2759 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:24:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2022-03-01 16:24:05,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 2945. [2022-03-01 16:24:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2944 states have (on average 2.6426630434782608) internal successors, (7780), 2944 states have internal predecessors, (7780), 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) [2022-03-01 16:24:05,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 7780 transitions. [2022-03-01 16:24:05,456 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 7780 transitions. Word has length 154 [2022-03-01 16:24:05,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:05,456 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 7780 transitions. [2022-03-01 16:24:05,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 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) [2022-03-01 16:24:05,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 7780 transitions. [2022-03-01 16:24:05,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-01 16:24:05,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:05,460 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:05,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:05,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-01 16:24:05,678 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:05,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:05,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1063269874, now seen corresponding path program 25 times [2022-03-01 16:24:05,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:05,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840051581] [2022-03-01 16:24:05,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:05,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-01 16:24:06,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:06,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840051581] [2022-03-01 16:24:06,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840051581] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:06,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823367846] [2022-03-01 16:24:06,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:24:06,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:06,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:06,069 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) [2022-03-01 16:24:06,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-01 16:24:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:06,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-01 16:24:06,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:06,891 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 [2022-03-01 16:24:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:24:06,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:07,058 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 16:24:07,059 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 28 treesize of output 13 [2022-03-01 16:24:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-01 16:24:07,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823367846] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:07,385 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:07,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 28, 17] total 56 [2022-03-01 16:24:07,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21988294] [2022-03-01 16:24:07,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:07,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-01 16:24:07,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-01 16:24:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2879, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 16:24:07,387 INFO L87 Difference]: Start difference. First operand 2945 states and 7780 transitions. Second operand has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 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) [2022-03-01 16:24:10,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:10,595 INFO L93 Difference]: Finished difference Result 18756 states and 49842 transitions. [2022-03-01 16:24:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-01 16:24:10,595 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 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 161 [2022-03-01 16:24:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:10,616 INFO L225 Difference]: With dead ends: 18756 [2022-03-01 16:24:10,616 INFO L226 Difference]: Without dead ends: 14102 [2022-03-01 16:24:10,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 275 SyntacticMatches, 14 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13196 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2153, Invalid=33379, Unknown=0, NotChecked=0, Total=35532 [2022-03-01 16:24:10,618 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 4495 mSDsluCounter, 8680 mSDsCounter, 0 mSdLazyCounter, 3592 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 8223 SdHoareTripleChecker+Invalid, 3838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 3592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:10,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4495 Valid, 8223 Invalid, 3838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 3592 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 16:24:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14102 states. [2022-03-01 16:24:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14102 to 1284. [2022-03-01 16:24:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.4629773967264224) internal successors, (3160), 1283 states have internal predecessors, (3160), 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) [2022-03-01 16:24:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3160 transitions. [2022-03-01 16:24:10,678 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3160 transitions. Word has length 161 [2022-03-01 16:24:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:10,678 INFO L470 AbstractCegarLoop]: Abstraction has 1284 states and 3160 transitions. [2022-03-01 16:24:10,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 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) [2022-03-01 16:24:10,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3160 transitions. [2022-03-01 16:24:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-01 16:24:10,680 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:10,680 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:10,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-01 16:24:10,883 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,SelfDestructingSolverStorable28 [2022-03-01 16:24:10,883 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1212014386, now seen corresponding path program 26 times [2022-03-01 16:24:10,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:10,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995560285] [2022-03-01 16:24:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:10,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-01 16:24:11,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:11,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995560285] [2022-03-01 16:24:11,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995560285] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:11,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706308448] [2022-03-01 16:24:11,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:24:11,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:11,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:11,354 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) [2022-03-01 16:24:11,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-01 16:24:11,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:24:11,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:11,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-01 16:24:11,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:12,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:24:12,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-01 16:24:12,308 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 [2022-03-01 16:24:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-01 16:24:12,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:12,458 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_929 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_929) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 20)) 5)) is different from false [2022-03-01 16:24:12,464 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:24:12,464 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 47 treesize of output 47 [2022-03-01 16:24:12,466 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 14 treesize of output 7 [2022-03-01 16:24:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-01 16:24:12,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706308448] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:12,911 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:12,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 61 [2022-03-01 16:24:12,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144183199] [2022-03-01 16:24:12,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:12,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-01 16:24:12,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:12,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-01 16:24:12,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3331, Unknown=1, NotChecked=116, Total=3660 [2022-03-01 16:24:12,912 INFO L87 Difference]: Start difference. First operand 1284 states and 3160 transitions. Second operand has 61 states, 61 states have (on average 5.114754098360656) internal successors, (312), 61 states have internal predecessors, (312), 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) [2022-03-01 16:24:14,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:24:14,570 INFO L93 Difference]: Finished difference Result 3781 states and 9852 transitions. [2022-03-01 16:24:14,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-01 16:24:14,571 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.114754098360656) internal successors, (312), 61 states have internal predecessors, (312), 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 161 [2022-03-01 16:24:14,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:24:14,576 INFO L225 Difference]: With dead ends: 3781 [2022-03-01 16:24:14,576 INFO L226 Difference]: Without dead ends: 3651 [2022-03-01 16:24:14,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2593 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=702, Invalid=9200, Unknown=2, NotChecked=196, Total=10100 [2022-03-01 16:24:14,576 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1852 mSDsluCounter, 5696 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:24:14,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 5512 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2084 Invalid, 0 Unknown, 313 Unchecked, 0.6s Time] [2022-03-01 16:24:14,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2022-03-01 16:24:14,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 1277. [2022-03-01 16:24:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 2.4655172413793105) internal successors, (3146), 1276 states have internal predecessors, (3146), 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) [2022-03-01 16:24:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3146 transitions. [2022-03-01 16:24:14,596 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3146 transitions. Word has length 161 [2022-03-01 16:24:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:24:14,597 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 3146 transitions. [2022-03-01 16:24:14,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.114754098360656) internal successors, (312), 61 states have internal predecessors, (312), 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) [2022-03-01 16:24:14,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3146 transitions. [2022-03-01 16:24:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-01 16:24:14,598 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:24:14,598 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:24:14,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-01 16:24:14,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:14,811 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:24:14,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:24:14,812 INFO L85 PathProgramCache]: Analyzing trace with hash -630277180, now seen corresponding path program 27 times [2022-03-01 16:24:14,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:24:14,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253472431] [2022-03-01 16:24:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:24:14,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:24:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:24:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-01 16:24:14,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:24:14,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253472431] [2022-03-01 16:24:14,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253472431] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:24:14,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155866038] [2022-03-01 16:24:14,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:24:14,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:24:14,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:24:14,892 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) [2022-03-01 16:24:14,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-01 16:24:15,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-01 16:24:15,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:24:15,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 89 conjunts are in the unsatisfiable core [2022-03-01 16:24:15,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:24:16,115 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 [2022-03-01 16:24:16,396 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 [2022-03-01 16:24:16,476 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 [2022-03-01 16:24:18,237 INFO L353 Elim1Store]: treesize reduction 121, result has 2.4 percent of original size [2022-03-01 16:24:18,237 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 54 treesize of output 16 [2022-03-01 16:24:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 80 proven. 134 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-01 16:24:18,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:24:22,294 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:24:22,294 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 130 treesize of output 94 [2022-03-01 16:24:22,319 INFO L353 Elim1Store]: treesize reduction 87, result has 31.5 percent of original size [2022-03-01 16:24:22,320 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 688 treesize of output 643 [2022-03-01 16:24:22,337 INFO L353 Elim1Store]: treesize reduction 126, result has 0.8 percent of original size [2022-03-01 16:24:22,338 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 604 treesize of output 536 [2022-03-01 16:24:22,357 INFO L353 Elim1Store]: treesize reduction 126, result has 0.8 percent of original size [2022-03-01 16:24:22,358 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 536 treesize of output 400 [2022-03-01 16:24:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 13 proven. 201 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-01 16:24:23,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155866038] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:24:23,637 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:24:23,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 41, 38] total 81 [2022-03-01 16:24:23,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350544344] [2022-03-01 16:24:23,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:24:23,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-01 16:24:23,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:24:23,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-01 16:24:23,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=5629, Unknown=78, NotChecked=0, Total=6480 [2022-03-01 16:24:23,640 INFO L87 Difference]: Start difference. First operand 1277 states and 3146 transitions. Second operand has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:24:38,713 WARN L228 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:25:56,845 WARN L228 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 81 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:29:12,210 WARN L228 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 80 DAG size of output: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 16:29:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:29:55,749 INFO L93 Difference]: Finished difference Result 163720 states and 428778 transitions. [2022-03-01 16:29:55,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1148 states. [2022-03-01 16:29:55,750 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-03-01 16:29:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:29:56,300 INFO L225 Difference]: With dead ends: 163720 [2022-03-01 16:29:56,300 INFO L226 Difference]: Without dead ends: 127190 [2022-03-01 16:29:56,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1916 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 1216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690787 ImplicationChecksByTransitivity, 301.9s TimeCoverageRelationStatistics Valid=141169, Invalid=1340996, Unknown=141, NotChecked=0, Total=1482306 [2022-03-01 16:29:56,362 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 7774 mSDsluCounter, 30782 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7774 SdHoareTripleChecker+Valid, 31156 SdHoareTripleChecker+Invalid, 34953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31823 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:29:56,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7774 Valid, 31156 Invalid, 34953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [701 Valid, 2429 Invalid, 0 Unknown, 31823 Unchecked, 1.5s Time] [2022-03-01 16:29:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127190 states. [2022-03-01 16:29:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127190 to 39425. [2022-03-01 16:29:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39425 states, 39424 states have (on average 2.934735186688312) internal successors, (115699), 39424 states have internal predecessors, (115699), 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) [2022-03-01 16:29:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39425 states to 39425 states and 115699 transitions. [2022-03-01 16:29:58,422 INFO L78 Accepts]: Start accepts. Automaton has 39425 states and 115699 transitions. Word has length 164 [2022-03-01 16:29:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:29:58,423 INFO L470 AbstractCegarLoop]: Abstraction has 39425 states and 115699 transitions. [2022-03-01 16:29:58,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:29:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 39425 states and 115699 transitions. [2022-03-01 16:29:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-01 16:29:58,476 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:29:58,476 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:29:58,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-01 16:29:58,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:58,691 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:29:58,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:29:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash 738185936, now seen corresponding path program 28 times [2022-03-01 16:29:58,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:29:58,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094509406] [2022-03-01 16:29:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:29:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:29:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:29:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-01 16:29:58,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:29:58,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094509406] [2022-03-01 16:29:58,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094509406] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:29:58,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357510467] [2022-03-01 16:29:58,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:29:58,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:29:58,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:29:58,774 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) [2022-03-01 16:29:58,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-01 16:29:58,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:29:58,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:29:58,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 16:29:58,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:29:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-01 16:29:59,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:29:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-01 16:29:59,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357510467] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:29:59,539 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:29:59,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-03-01 16:29:59,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412456535] [2022-03-01 16:29:59,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:29:59,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 16:29:59,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:29:59,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 16:29:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-03-01 16:29:59,540 INFO L87 Difference]: Start difference. First operand 39425 states and 115699 transitions. Second operand has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 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) [2022-03-01 16:30:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:00,043 INFO L93 Difference]: Finished difference Result 72902 states and 213778 transitions. [2022-03-01 16:30:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 16:30:00,044 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 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 164 [2022-03-01 16:30:00,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:00,232 INFO L225 Difference]: With dead ends: 72902 [2022-03-01 16:30:00,233 INFO L226 Difference]: Without dead ends: 72007 [2022-03-01 16:30:00,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-03-01 16:30:00,233 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 417 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:00,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 449 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:30:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72007 states. [2022-03-01 16:30:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72007 to 69536. [2022-03-01 16:30:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69536 states, 69535 states have (on average 2.9453512619544115) internal successors, (204805), 69535 states have internal predecessors, (204805), 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) [2022-03-01 16:30:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69536 states to 69536 states and 204805 transitions. [2022-03-01 16:30:02,071 INFO L78 Accepts]: Start accepts. Automaton has 69536 states and 204805 transitions. Word has length 164 [2022-03-01 16:30:02,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:02,072 INFO L470 AbstractCegarLoop]: Abstraction has 69536 states and 204805 transitions. [2022-03-01 16:30:02,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 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) [2022-03-01 16:30:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 69536 states and 204805 transitions. [2022-03-01 16:30:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-03-01 16:30:02,184 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:02,184 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:02,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-01 16:30:02,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:02,400 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:02,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1257603682, now seen corresponding path program 29 times [2022-03-01 16:30:02,401 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:02,401 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319353187] [2022-03-01 16:30:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:02,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 52 proven. 129 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-01 16:30:02,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:02,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319353187] [2022-03-01 16:30:02,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319353187] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:02,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573519233] [2022-03-01 16:30:02,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:30:02,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:02,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:02,740 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) [2022-03-01 16:30:02,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-01 16:30:02,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-03-01 16:30:02,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:02,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-01 16:30:02,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 70 proven. 111 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-01 16:30:04,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 52 proven. 129 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-01 16:30:05,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573519233] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:05,089 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:05,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 73 [2022-03-01 16:30:05,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622691945] [2022-03-01 16:30:05,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:05,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-03-01 16:30:05,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:05,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-03-01 16:30:05,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=973, Invalid=4283, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 16:30:05,091 INFO L87 Difference]: Start difference. First operand 69536 states and 204805 transitions. Second operand has 73 states, 73 states have (on average 5.123287671232877) internal successors, (374), 73 states have internal predecessors, (374), 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) [2022-03-01 16:30:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:06,730 INFO L93 Difference]: Finished difference Result 8269 states and 21677 transitions. [2022-03-01 16:30:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 16:30:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.123287671232877) internal successors, (374), 73 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2022-03-01 16:30:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:06,740 INFO L225 Difference]: With dead ends: 8269 [2022-03-01 16:30:06,740 INFO L226 Difference]: Without dead ends: 4858 [2022-03-01 16:30:06,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5836 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3059, Invalid=12441, Unknown=0, NotChecked=0, Total=15500 [2022-03-01 16:30:06,742 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1243 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:06,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1243 Valid, 3242 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:30:06,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2022-03-01 16:30:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4508. [2022-03-01 16:30:06,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 4507 states have (on average 2.7162192145551365) internal successors, (12242), 4507 states have internal predecessors, (12242), 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) [2022-03-01 16:30:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 12242 transitions. [2022-03-01 16:30:06,812 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 12242 transitions. Word has length 167 [2022-03-01 16:30:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:06,812 INFO L470 AbstractCegarLoop]: Abstraction has 4508 states and 12242 transitions. [2022-03-01 16:30:06,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.123287671232877) internal successors, (374), 73 states have internal predecessors, (374), 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) [2022-03-01 16:30:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 12242 transitions. [2022-03-01 16:30:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-03-01 16:30:06,818 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:06,818 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:06,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-01 16:30:07,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:07,031 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:07,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1049547545, now seen corresponding path program 30 times [2022-03-01 16:30:07,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:07,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67897219] [2022-03-01 16:30:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:07,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:07,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:07,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67897219] [2022-03-01 16:30:07,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67897219] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:07,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951608707] [2022-03-01 16:30:07,754 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:30:07,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:07,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:07,756 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) [2022-03-01 16:30:07,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-01 16:30:08,101 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-03-01 16:30:08,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:08,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-01 16:30:08,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:10,148 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-01 16:30:10,148 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 26 treesize of output 10 [2022-03-01 16:30:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 52 proven. 176 refuted. 3 times theorem prover too weak. 63 trivial. 0 not checked. [2022-03-01 16:30:10,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:10,611 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-01 16:30:10,612 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 27 treesize of output 19 [2022-03-01 16:30:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 45 proven. 186 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-03-01 16:30:11,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951608707] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:11,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:11,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 31] total 89 [2022-03-01 16:30:11,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371702070] [2022-03-01 16:30:11,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:11,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-03-01 16:30:11,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:11,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-03-01 16:30:11,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=859, Invalid=6972, Unknown=1, NotChecked=0, Total=7832 [2022-03-01 16:30:11,412 INFO L87 Difference]: Start difference. First operand 4508 states and 12242 transitions. Second operand has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 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) [2022-03-01 16:30:17,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:17,846 INFO L93 Difference]: Finished difference Result 24952 states and 65903 transitions. [2022-03-01 16:30:17,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-01 16:30:17,846 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2022-03-01 16:30:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:17,889 INFO L225 Difference]: With dead ends: 24952 [2022-03-01 16:30:17,889 INFO L226 Difference]: Without dead ends: 24486 [2022-03-01 16:30:17,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13309 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=4623, Invalid=34777, Unknown=2, NotChecked=0, Total=39402 [2022-03-01 16:30:17,892 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 3045 mSDsluCounter, 12455 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 12173 SdHoareTripleChecker+Invalid, 4221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1529 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:17,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3045 Valid, 12173 Invalid, 4221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2586 Invalid, 0 Unknown, 1529 Unchecked, 0.9s Time] [2022-03-01 16:30:17,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24486 states. [2022-03-01 16:30:18,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24486 to 11821. [2022-03-01 16:30:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11821 states, 11820 states have (on average 2.82165820642978) internal successors, (33352), 11820 states have internal predecessors, (33352), 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) [2022-03-01 16:30:18,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11821 states to 11821 states and 33352 transitions. [2022-03-01 16:30:18,235 INFO L78 Accepts]: Start accepts. Automaton has 11821 states and 33352 transitions. Word has length 174 [2022-03-01 16:30:18,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:18,235 INFO L470 AbstractCegarLoop]: Abstraction has 11821 states and 33352 transitions. [2022-03-01 16:30:18,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 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) [2022-03-01 16:30:18,235 INFO L276 IsEmpty]: Start isEmpty. Operand 11821 states and 33352 transitions. [2022-03-01 16:30:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-03-01 16:30:18,252 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:18,252 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:18,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-01 16:30:18,461 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,SelfDestructingSolverStorable33 [2022-03-01 16:30:18,461 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:18,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:18,462 INFO L85 PathProgramCache]: Analyzing trace with hash 318915571, now seen corresponding path program 31 times [2022-03-01 16:30:18,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:18,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894821142] [2022-03-01 16:30:18,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:18,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:19,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:19,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894821142] [2022-03-01 16:30:19,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894821142] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:19,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624461102] [2022-03-01 16:30:19,160 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:30:19,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:19,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:19,161 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) [2022-03-01 16:30:19,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-01 16:30:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:19,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-01 16:30:19,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:20,590 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 [2022-03-01 16:30:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:30:20,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:20,879 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 16:30:20,879 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 28 treesize of output 13 [2022-03-01 16:30:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-01 16:30:21,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624461102] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:21,572 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:21,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 19] total 77 [2022-03-01 16:30:21,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743162113] [2022-03-01 16:30:21,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:21,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-03-01 16:30:21,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:21,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-03-01 16:30:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=5539, Unknown=0, NotChecked=0, Total=5852 [2022-03-01 16:30:21,573 INFO L87 Difference]: Start difference. First operand 11821 states and 33352 transitions. Second operand has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 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) [2022-03-01 16:30:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:29,603 INFO L93 Difference]: Finished difference Result 91721 states and 253486 transitions. [2022-03-01 16:30:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-03-01 16:30:29,603 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2022-03-01 16:30:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:29,783 INFO L225 Difference]: With dead ends: 91721 [2022-03-01 16:30:29,783 INFO L226 Difference]: Without dead ends: 80436 [2022-03-01 16:30:29,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 294 SyntacticMatches, 16 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43776 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=5910, Invalid=100040, Unknown=0, NotChecked=0, Total=105950 [2022-03-01 16:30:29,790 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 8967 mSDsluCounter, 15594 mSDsCounter, 0 mSdLazyCounter, 6827 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8967 SdHoareTripleChecker+Valid, 14536 SdHoareTripleChecker+Invalid, 7353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 6827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:29,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8967 Valid, 14536 Invalid, 7353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 6827 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-01 16:30:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80436 states. [2022-03-01 16:30:30,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80436 to 5678. [2022-03-01 16:30:30,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5678 states, 5677 states have (on average 2.7003699136868065) internal successors, (15330), 5677 states have internal predecessors, (15330), 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) [2022-03-01 16:30:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5678 states to 5678 states and 15330 transitions. [2022-03-01 16:30:30,399 INFO L78 Accepts]: Start accepts. Automaton has 5678 states and 15330 transitions. Word has length 174 [2022-03-01 16:30:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:30,399 INFO L470 AbstractCegarLoop]: Abstraction has 5678 states and 15330 transitions. [2022-03-01 16:30:30,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 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) [2022-03-01 16:30:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5678 states and 15330 transitions. [2022-03-01 16:30:30,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-03-01 16:30:30,405 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:30,405 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:30,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-01 16:30:30,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:30,622 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:30,622 INFO L85 PathProgramCache]: Analyzing trace with hash -550410261, now seen corresponding path program 32 times [2022-03-01 16:30:30,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:30,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600868455] [2022-03-01 16:30:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:30,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:30:31,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:31,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600868455] [2022-03-01 16:30:31,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600868455] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:31,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360508069] [2022-03-01 16:30:31,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:30:31,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:31,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:31,575 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) [2022-03-01 16:30:31,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-01 16:30:31,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:30:31,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:31,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-01 16:30:31,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:32,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:30:32,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-01 16:30:32,796 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 [2022-03-01 16:30:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-01 16:30:32,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:33,007 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1210 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1210) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 24)))) is different from false [2022-03-01 16:30:33,013 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:30:33,013 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 47 treesize of output 47 [2022-03-01 16:30:33,015 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 14 treesize of output 7 [2022-03-01 16:30:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-01 16:30:33,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360508069] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:33,571 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:33,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 27, 26] total 80 [2022-03-01 16:30:33,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394154787] [2022-03-01 16:30:33,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:33,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-03-01 16:30:33,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:33,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-03-01 16:30:33,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=5860, Unknown=1, NotChecked=154, Total=6320 [2022-03-01 16:30:33,573 INFO L87 Difference]: Start difference. First operand 5678 states and 15330 transitions. Second operand has 80 states, 80 states have (on average 4.375) internal successors, (350), 80 states have internal predecessors, (350), 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) [2022-03-01 16:30:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:30:36,857 INFO L93 Difference]: Finished difference Result 16797 states and 45925 transitions. [2022-03-01 16:30:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-01 16:30:36,857 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 4.375) internal successors, (350), 80 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2022-03-01 16:30:36,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:30:36,885 INFO L225 Difference]: With dead ends: 16797 [2022-03-01 16:30:36,886 INFO L226 Difference]: Without dead ends: 16667 [2022-03-01 16:30:36,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6270 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1448, Invalid=20905, Unknown=1, NotChecked=296, Total=22650 [2022-03-01 16:30:36,888 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 3069 mSDsluCounter, 8496 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3069 SdHoareTripleChecker+Valid, 8197 SdHoareTripleChecker+Invalid, 4868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 410 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:30:36,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3069 Valid, 8197 Invalid, 4868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 4215 Invalid, 0 Unknown, 410 Unchecked, 1.0s Time] [2022-03-01 16:30:36,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16667 states. [2022-03-01 16:30:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16667 to 5664. [2022-03-01 16:30:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 5663 states have (on average 2.7021013597033376) internal successors, (15302), 5663 states have internal predecessors, (15302), 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) [2022-03-01 16:30:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 15302 transitions. [2022-03-01 16:30:37,042 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 15302 transitions. Word has length 174 [2022-03-01 16:30:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:30:37,042 INFO L470 AbstractCegarLoop]: Abstraction has 5664 states and 15302 transitions. [2022-03-01 16:30:37,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 4.375) internal successors, (350), 80 states have internal predecessors, (350), 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) [2022-03-01 16:30:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 15302 transitions. [2022-03-01 16:30:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-01 16:30:37,051 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:30:37,051 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:30:37,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-01 16:30:37,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:37,275 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:30:37,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:30:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1518196055, now seen corresponding path program 33 times [2022-03-01 16:30:37,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:30:37,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931889070] [2022-03-01 16:30:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:30:37,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:30:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:30:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-01 16:30:37,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:30:37,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931889070] [2022-03-01 16:30:37,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931889070] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:30:37,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767576484] [2022-03-01 16:30:37,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:30:37,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:30:37,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:30:37,432 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:30:37,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-01 16:30:37,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-01 16:30:37,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:30:37,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 88 conjunts are in the unsatisfiable core [2022-03-01 16:30:37,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:30:41,995 INFO L353 Elim1Store]: treesize reduction 206, result has 1.4 percent of original size [2022-03-01 16:30:41,995 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 19 [2022-03-01 16:30:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 117 proven. 169 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-01 16:30:42,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:30:42,806 INFO L353 Elim1Store]: treesize reduction 160, result has 24.9 percent of original size [2022-03-01 16:30:42,807 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 73 treesize of output 72 [2022-03-01 16:30:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 24 proven. 262 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-01 16:30:44,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767576484] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:30:44,189 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:30:44,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 35, 35] total 73 [2022-03-01 16:30:44,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105301038] [2022-03-01 16:30:44,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:30:44,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-03-01 16:30:44,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:30:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-03-01 16:30:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=688, Invalid=4568, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 16:30:44,193 INFO L87 Difference]: Start difference. First operand 5664 states and 15302 transitions. Second operand has 73 states, 73 states have (on average 5.904109589041096) internal successors, (431), 73 states have internal predecessors, (431), 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) [2022-03-01 16:31:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:31:55,536 INFO L93 Difference]: Finished difference Result 473327 states and 1286501 transitions. [2022-03-01 16:31:55,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 778 states. [2022-03-01 16:31:55,536 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.904109589041096) internal successors, (431), 73 states have internal predecessors, (431), 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 177 [2022-03-01 16:31:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:31:57,022 INFO L225 Difference]: With dead ends: 473327 [2022-03-01 16:31:57,022 INFO L226 Difference]: Without dead ends: 406346 [2022-03-01 16:31:57,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1520 GetRequests, 675 SyntacticMatches, 3 SemanticMatches, 842 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312747 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=78660, Invalid=632829, Unknown=3, NotChecked=0, Total=711492 [2022-03-01 16:31:57,244 INFO L933 BasicCegarLoop]: 1351 mSDtfsCounter, 8771 mSDsluCounter, 47541 mSDsCounter, 0 mSdLazyCounter, 3093 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8771 SdHoareTripleChecker+Valid, 37085 SdHoareTripleChecker+Invalid, 51164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 3093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47186 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:31:57,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8771 Valid, 37085 Invalid, 51164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [885 Valid, 3093 Invalid, 0 Unknown, 47186 Unchecked, 1.5s Time] [2022-03-01 16:31:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406346 states. Received shutdown request... [2022-03-01 16:31:57,958 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 16:31:57,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-01 16:31:57,984 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 [2022-03-01 16:31:57,984 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 16:31:58,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-01 16:31:58,172 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2022-03-01 16:31:58,173 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 16:31:58,173 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 16:31:58,185 INFO L732 BasicCegarLoop]: Path program histogram: [33, 1, 1, 1, 1] [2022-03-01 16:31:58,199 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 16:31:58,199 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 16:31:58,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 04:31:58 BasicIcfg [2022-03-01 16:31:58,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 16:31:58,203 INFO L158 Benchmark]: Toolchain (without parser) took 844049.78ms. Allocated memory was 209.7MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 152.0MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-03-01 16:31:58,203 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 209.7MB. Free memory is still 168.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 16:31:58,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.88ms. Allocated memory is still 209.7MB. Free memory was 151.9MB in the beginning and 177.7MB in the end (delta: -25.8MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2022-03-01 16:31:58,204 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.54ms. Allocated memory is still 209.7MB. Free memory was 177.7MB in the beginning and 175.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 16:31:58,204 INFO L158 Benchmark]: Boogie Preprocessor took 36.63ms. Allocated memory is still 209.7MB. Free memory was 175.9MB in the beginning and 174.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:31:58,204 INFO L158 Benchmark]: RCFGBuilder took 365.99ms. Allocated memory is still 209.7MB. Free memory was 174.1MB in the beginning and 155.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-03-01 16:31:58,204 INFO L158 Benchmark]: TraceAbstraction took 843379.65ms. Allocated memory was 209.7MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 154.7MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-03-01 16:31:58,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 209.7MB. Free memory is still 168.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.88ms. Allocated memory is still 209.7MB. Free memory was 151.9MB in the beginning and 177.7MB in the end (delta: -25.8MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.54ms. Allocated memory is still 209.7MB. Free memory was 177.7MB in the beginning and 175.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.63ms. Allocated memory is still 209.7MB. Free memory was 175.9MB in the beginning and 174.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 365.99ms. Allocated memory is still 209.7MB. Free memory was 174.1MB in the beginning and 155.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 843379.65ms. Allocated memory was 209.7MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 154.7MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 1.4GB. 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: 85]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 124 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 843.2s, OverallIterations: 37, TraceHistogramMax: 8, PathProgramHistogramMax: 33, EmptinessCheckTime: 0.8s, AutomataDifference: 743.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77799 SdHoareTripleChecker+Valid, 18.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77799 mSDsluCounter, 201502 SdHoareTripleChecker+Invalid, 15.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 107916 IncrementalHoareTripleChecker+Unchecked, 218970 mSDsCounter, 5457 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49051 IncrementalHoareTripleChecker+Invalid, 162424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5457 mSolverCounterUnsat, 8250 mSDtfsCounter, 49051 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15449 GetRequests, 9431 SyntacticMatches, 450 SemanticMatches, 5568 ConstructedPredicates, 7 IntricatePredicates, 7 DeprecatedPredicates, 1557233 ImplicationChecksByTransitivity, 675.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78644occurred in iteration=27, InterpolantAutomatonStates: 4346, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.9s AutomataMinimizationTime, 37 MinimizatonAttempts, 386500 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 71.8s InterpolantComputationTime, 9433 NumberOfCodeBlocks, 9324 NumberOfCodeBlocksAsserted, 149 NumberOfCheckSat, 13877 ConstructedInterpolants, 428 QuantifiedInterpolants, 129044 SizeOfPredicates, 618 NumberOfNonLiveVariables, 11498 ConjunctsInSsa, 1298 ConjunctsInUnsatCore, 103 InterpolantComputations, 4 PerfectInterpolantSequences, 5155/12327 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