/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:12:44,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:12:44,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:12:44,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 17:12:44,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:12:44,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:12:44,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:12:44,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:12:44,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:12:44,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:12:44,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:12:44,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:12:44,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:12:44,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:12:44,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:12:44,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:12:44,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 17:12:44,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:12:44,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:12:44,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:12:44,666 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-Delay.epf [2021-08-21 17:12:44,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:12:44,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:12:44,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:12:44,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:12:44,710 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:12:44,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:12:44,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:12:44,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:12:44,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:12:44,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:12:44,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:12:44,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:12:44,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:12:44,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:12:44,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:12:44,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:12:44,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:12:44,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:12:44,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:12:44,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:12:44,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:12:44,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:12:44,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:12:44,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:12:44,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:12:44,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:12:44,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:12:44,714 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:12:44,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:12:44,714 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:12:44,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:12:45,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:12:45,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:12:45,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:12:45,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 17:12:45,069 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 17:12:45,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2021-08-21 17:12:45,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64156c85/644a453a324d4b5195690d275b54a803/FLAGf9aaf0c0c [2021-08-21 17:12:45,680 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 17:12:45,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2021-08-21 17:12:45,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64156c85/644a453a324d4b5195690d275b54a803/FLAGf9aaf0c0c [2021-08-21 17:12:46,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64156c85/644a453a324d4b5195690d275b54a803 [2021-08-21 17:12:46,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:12:46,101 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 17:12:46,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 17:12:46,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 17:12:46,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 17:12:46,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce4d729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46, skipping insertion in model container [2021-08-21 17:12:46,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 17:12:46,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 17:12:46,322 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i[949,962] [2021-08-21 17:12:46,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:12:46,459 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 17:12:46,469 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i[949,962] [2021-08-21 17:12:46,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:12:46,526 INFO L208 MainTranslator]: Completed translation [2021-08-21 17:12:46,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46 WrapperNode [2021-08-21 17:12:46,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 17:12:46,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:12:46,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:12:46,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:12:46,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:12:46,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:12:46,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:12:46,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:12:46,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:12:46,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:12:46,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:12:46,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:12:46,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (1/1) ... [2021-08-21 17:12:46,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:12:46,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:12:46,626 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) [2021-08-21 17:12:46,652 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 [2021-08-21 17:12:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 17:12:46,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 17:12:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 17:12:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 17:12:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 17:12:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 17:12:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 17:12:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 17:12:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 17:12:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 17:12:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-08-21 17:12:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-08-21 17:12:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 17:12:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 17:12:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:12:46,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:12:46,685 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 17:12:47,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:12:47,150 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 17:12:47,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:12:47 BoogieIcfgContainer [2021-08-21 17:12:47,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:12:47,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:12:47,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:12:47,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:12:47,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:12:46" (1/3) ... [2021-08-21 17:12:47,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5074d815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:12:47, skipping insertion in model container [2021-08-21 17:12:47,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:46" (2/3) ... [2021-08-21 17:12:47,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5074d815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:12:47, skipping insertion in model container [2021-08-21 17:12:47,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:12:47" (3/3) ... [2021-08-21 17:12:47,159 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2021-08-21 17:12:47,164 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:12:47,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:12:47,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:12:47,165 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:12:47,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,198 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,198 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,199 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,199 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,200 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,200 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,203 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,203 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,203 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,203 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,203 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,203 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,203 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,204 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,204 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,204 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,204 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,204 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,204 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,208 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,208 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,212 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,213 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,213 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,213 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,215 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,215 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,218 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,218 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:12:47,220 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 17:12:47,263 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:12:47,269 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 17:12:47,269 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-21 17:12:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 38833 states, 33289 states have (on average 2.1380035447144703) internal successors, (71172), 38832 states have internal predecessors, (71172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-21 17:12:50,760 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:12:50,760 INFO L512 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] [2021-08-21 17:12:50,762 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:12:50,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:12:50,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1205527084, now seen corresponding path program 1 times [2021-08-21 17:12:50,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:12:50,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33349315] [2021-08-21 17:12:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:12:50,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:12:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:12:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:12:51,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:12:51,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33349315] [2021-08-21 17:12:51,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33349315] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:12:51,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:12:51,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:12:51,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153760294] [2021-08-21 17:12:51,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:12:51,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:12:51,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:12:51,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:12:51,538 INFO L87 Difference]: Start difference. First operand has 38833 states, 33289 states have (on average 2.1380035447144703) internal successors, (71172), 38832 states have internal predecessors, (71172), 0 states have call successors, (0), 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 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:12:52,173 INFO L93 Difference]: Finished difference Result 44321 states and 82961 transitions. [2021-08-21 17:12:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:12:52,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-08-21 17:12:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:12:52,604 INFO L225 Difference]: With dead ends: 44321 [2021-08-21 17:12:52,604 INFO L226 Difference]: Without dead ends: 16474 [2021-08-21 17:12:52,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 168.9ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:12:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16474 states. [2021-08-21 17:12:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16474 to 16474. [2021-08-21 17:12:53,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16474 states, 16229 states have (on average 2.3732823957113807) internal successors, (38516), 16473 states have internal predecessors, (38516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16474 states to 16474 states and 38516 transitions. [2021-08-21 17:12:53,330 INFO L78 Accepts]: Start accepts. Automaton has 16474 states and 38516 transitions. Word has length 59 [2021-08-21 17:12:53,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:12:53,331 INFO L470 AbstractCegarLoop]: Abstraction has 16474 states and 38516 transitions. [2021-08-21 17:12:53,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 16474 states and 38516 transitions. [2021-08-21 17:12:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-21 17:12:53,356 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:12:53,356 INFO L512 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] [2021-08-21 17:12:53,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:12:53,357 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:12:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:12:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1489167339, now seen corresponding path program 1 times [2021-08-21 17:12:53,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:12:53,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397212883] [2021-08-21 17:12:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:12:53,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:12:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:12:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:12:53,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:12:53,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397212883] [2021-08-21 17:12:53,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397212883] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:12:53,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:12:53,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:12:53,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610058453] [2021-08-21 17:12:53,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:12:53,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:12:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:12:53,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:12:53,595 INFO L87 Difference]: Start difference. First operand 16474 states and 38516 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:12:54,156 INFO L93 Difference]: Finished difference Result 23594 states and 55815 transitions. [2021-08-21 17:12:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:12:54,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-08-21 17:12:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:12:54,255 INFO L225 Difference]: With dead ends: 23594 [2021-08-21 17:12:54,255 INFO L226 Difference]: Without dead ends: 16894 [2021-08-21 17:12:54,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 367.8ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-21 17:12:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16894 states. [2021-08-21 17:12:54,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16894 to 15718. [2021-08-21 17:12:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15718 states, 15473 states have (on average 2.4326892005428813) internal successors, (37641), 15717 states have internal predecessors, (37641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15718 states to 15718 states and 37641 transitions. [2021-08-21 17:12:54,998 INFO L78 Accepts]: Start accepts. Automaton has 15718 states and 37641 transitions. Word has length 61 [2021-08-21 17:12:54,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:12:54,999 INFO L470 AbstractCegarLoop]: Abstraction has 15718 states and 37641 transitions. [2021-08-21 17:12:55,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 15718 states and 37641 transitions. [2021-08-21 17:12:55,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-21 17:12:55,037 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:12:55,037 INFO L512 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] [2021-08-21 17:12:55,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:12:55,037 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:12:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:12:55,038 INFO L82 PathProgramCache]: Analyzing trace with hash -587530538, now seen corresponding path program 1 times [2021-08-21 17:12:55,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:12:55,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978233077] [2021-08-21 17:12:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:12:55,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:12:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:12:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:12:55,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:12:55,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978233077] [2021-08-21 17:12:55,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978233077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:12:55,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:12:55,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:12:55,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856024999] [2021-08-21 17:12:55,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:12:55,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:12:55,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:12:55,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:12:55,187 INFO L87 Difference]: Start difference. First operand 15718 states and 37641 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:55,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:12:55,448 INFO L93 Difference]: Finished difference Result 20254 states and 48861 transitions. [2021-08-21 17:12:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:12:55,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-08-21 17:12:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:12:55,491 INFO L225 Difference]: With dead ends: 20254 [2021-08-21 17:12:55,491 INFO L226 Difference]: Without dead ends: 9910 [2021-08-21 17:12:55,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 144.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:12:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9910 states. [2021-08-21 17:12:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9910 to 9910. [2021-08-21 17:12:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9910 states, 9770 states have (on average 2.4066530194472877) internal successors, (23513), 9909 states have internal predecessors, (23513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:55,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9910 states to 9910 states and 23513 transitions. [2021-08-21 17:12:55,886 INFO L78 Accepts]: Start accepts. Automaton has 9910 states and 23513 transitions. Word has length 63 [2021-08-21 17:12:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:12:55,887 INFO L470 AbstractCegarLoop]: Abstraction has 9910 states and 23513 transitions. [2021-08-21 17:12:55,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:55,887 INFO L276 IsEmpty]: Start isEmpty. Operand 9910 states and 23513 transitions. [2021-08-21 17:12:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-21 17:12:55,898 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:12:55,898 INFO L512 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] [2021-08-21 17:12:55,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:12:55,899 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:12:55,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:12:55,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1339670280, now seen corresponding path program 1 times [2021-08-21 17:12:55,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:12:55,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899480518] [2021-08-21 17:12:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:12:55,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:12:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:12:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:12:56,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:12:56,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899480518] [2021-08-21 17:12:56,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899480518] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:12:56,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:12:56,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:12:56,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729050020] [2021-08-21 17:12:56,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:12:56,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:12:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:12:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:12:56,017 INFO L87 Difference]: Start difference. First operand 9910 states and 23513 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:12:56,171 INFO L93 Difference]: Finished difference Result 11030 states and 28188 transitions. [2021-08-21 17:12:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:12:56,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-08-21 17:12:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:12:56,202 INFO L225 Difference]: With dead ends: 11030 [2021-08-21 17:12:56,203 INFO L226 Difference]: Without dead ends: 8230 [2021-08-21 17:12:56,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:12:56,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8230 states. [2021-08-21 17:12:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8230 to 8230. [2021-08-21 17:12:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8230 states, 8090 states have (on average 2.5133498145859083) internal successors, (20333), 8229 states have internal predecessors, (20333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 20333 transitions. [2021-08-21 17:12:56,500 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 20333 transitions. Word has length 64 [2021-08-21 17:12:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:12:56,500 INFO L470 AbstractCegarLoop]: Abstraction has 8230 states and 20333 transitions. [2021-08-21 17:12:56,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 20333 transitions. [2021-08-21 17:12:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-21 17:12:56,514 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:12:56,514 INFO L512 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] [2021-08-21 17:12:56,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:12:56,515 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:12:56,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:12:56,515 INFO L82 PathProgramCache]: Analyzing trace with hash -788877047, now seen corresponding path program 1 times [2021-08-21 17:12:56,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:12:56,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619656547] [2021-08-21 17:12:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:12:56,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:12:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:12:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:12:56,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:12:56,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619656547] [2021-08-21 17:12:56,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619656547] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:12:56,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:12:56,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:12:56,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279046492] [2021-08-21 17:12:56,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:12:56,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:12:56,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:12:56,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:12:56,631 INFO L87 Difference]: Start difference. First operand 8230 states and 20333 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:57,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:12:57,031 INFO L93 Difference]: Finished difference Result 13266 states and 35959 transitions. [2021-08-21 17:12:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:12:57,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-08-21 17:12:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:12:57,087 INFO L225 Difference]: With dead ends: 13266 [2021-08-21 17:12:57,088 INFO L226 Difference]: Without dead ends: 7962 [2021-08-21 17:12:57,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 298.8ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-21 17:12:57,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7962 states. [2021-08-21 17:12:57,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7962 to 7782. [2021-08-21 17:12:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7782 states, 7650 states have (on average 2.4763398692810457) internal successors, (18944), 7781 states have internal predecessors, (18944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7782 states to 7782 states and 18944 transitions. [2021-08-21 17:12:57,326 INFO L78 Accepts]: Start accepts. Automaton has 7782 states and 18944 transitions. Word has length 66 [2021-08-21 17:12:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:12:57,327 INFO L470 AbstractCegarLoop]: Abstraction has 7782 states and 18944 transitions. [2021-08-21 17:12:57,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 7782 states and 18944 transitions. [2021-08-21 17:12:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 17:12:57,340 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:12:57,341 INFO L512 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] [2021-08-21 17:12:57,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:12:57,341 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:12:57,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:12:57,341 INFO L82 PathProgramCache]: Analyzing trace with hash 959198523, now seen corresponding path program 1 times [2021-08-21 17:12:57,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:12:57,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820730104] [2021-08-21 17:12:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:12:57,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:12:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:12:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:12:57,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:12:57,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820730104] [2021-08-21 17:12:57,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820730104] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:12:57,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:12:57,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:12:57,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937539129] [2021-08-21 17:12:57,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:12:57,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:12:57,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:12:57,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:12:57,506 INFO L87 Difference]: Start difference. First operand 7782 states and 18944 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:57,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:12:57,644 INFO L93 Difference]: Finished difference Result 8486 states and 21823 transitions. [2021-08-21 17:12:57,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:12:57,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-08-21 17:12:57,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:12:57,773 INFO L225 Difference]: With dead ends: 8486 [2021-08-21 17:12:57,773 INFO L226 Difference]: Without dead ends: 6482 [2021-08-21 17:12:57,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:12:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2021-08-21 17:12:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 6290. [2021-08-21 17:12:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6290 states, 6190 states have (on average 2.5394184168012925) internal successors, (15719), 6289 states have internal predecessors, (15719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6290 states to 6290 states and 15719 transitions. [2021-08-21 17:12:57,950 INFO L78 Accepts]: Start accepts. Automaton has 6290 states and 15719 transitions. Word has length 67 [2021-08-21 17:12:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:12:57,950 INFO L470 AbstractCegarLoop]: Abstraction has 6290 states and 15719 transitions. [2021-08-21 17:12:57,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 6290 states and 15719 transitions. [2021-08-21 17:12:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-08-21 17:12:57,969 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:12:57,969 INFO L512 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] [2021-08-21 17:12:57,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:12:57,969 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:12:57,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:12:57,970 INFO L82 PathProgramCache]: Analyzing trace with hash -475594500, now seen corresponding path program 1 times [2021-08-21 17:12:57,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:12:57,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692236190] [2021-08-21 17:12:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:12:57,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:12:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:12:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:12:58,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:12:58,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692236190] [2021-08-21 17:12:58,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692236190] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:12:58,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:12:58,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:12:58,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442463116] [2021-08-21 17:12:58,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:12:58,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:12:58,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:12:58,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:12:58,097 INFO L87 Difference]: Start difference. First operand 6290 states and 15719 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:12:58,272 INFO L93 Difference]: Finished difference Result 8230 states and 21708 transitions. [2021-08-21 17:12:58,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:12:58,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-08-21 17:12:58,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:12:58,286 INFO L225 Difference]: With dead ends: 8230 [2021-08-21 17:12:58,286 INFO L226 Difference]: Without dead ends: 3500 [2021-08-21 17:12:58,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:12:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2021-08-21 17:12:58,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3500. [2021-08-21 17:12:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3500 states, 3400 states have (on average 2.8385294117647057) internal successors, (9651), 3499 states have internal predecessors, (9651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 9651 transitions. [2021-08-21 17:12:58,378 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 9651 transitions. Word has length 69 [2021-08-21 17:12:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:12:58,380 INFO L470 AbstractCegarLoop]: Abstraction has 3500 states and 9651 transitions. [2021-08-21 17:12:58,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:58,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 9651 transitions. [2021-08-21 17:12:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-08-21 17:12:58,390 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:12:58,390 INFO L512 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] [2021-08-21 17:12:58,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:12:58,390 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:12:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:12:58,391 INFO L82 PathProgramCache]: Analyzing trace with hash -346833814, now seen corresponding path program 1 times [2021-08-21 17:12:58,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:12:58,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936240324] [2021-08-21 17:12:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:12:58,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:12:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:12:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:12:58,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:12:58,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936240324] [2021-08-21 17:12:58,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936240324] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:12:58,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:12:58,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:12:58,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119402473] [2021-08-21 17:12:58,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:12:58,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:12:58,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:12:58,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:12:58,536 INFO L87 Difference]: Start difference. First operand 3500 states and 9651 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:12:58,756 INFO L93 Difference]: Finished difference Result 5172 states and 14775 transitions. [2021-08-21 17:12:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:12:58,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-08-21 17:12:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:12:58,766 INFO L225 Difference]: With dead ends: 5172 [2021-08-21 17:12:58,766 INFO L226 Difference]: Without dead ends: 2608 [2021-08-21 17:12:58,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 133.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:12:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-08-21 17:12:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2608. [2021-08-21 17:12:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2608 states, 2528 states have (on average 2.8892405063291138) internal successors, (7304), 2607 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 7304 transitions. [2021-08-21 17:12:58,814 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 7304 transitions. Word has length 69 [2021-08-21 17:12:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:12:58,814 INFO L470 AbstractCegarLoop]: Abstraction has 2608 states and 7304 transitions. [2021-08-21 17:12:58,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:58,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 7304 transitions. [2021-08-21 17:12:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-08-21 17:12:58,819 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:12:58,819 INFO L512 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] [2021-08-21 17:12:58,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:12:58,819 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:12:58,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:12:58,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1145896372, now seen corresponding path program 1 times [2021-08-21 17:12:58,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:12:58,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601565675] [2021-08-21 17:12:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:12:58,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:12:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:12:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:12:58,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:12:58,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601565675] [2021-08-21 17:12:58,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601565675] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:12:58,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:12:58,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:12:58,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212222265] [2021-08-21 17:12:58,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:12:58,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:12:58,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:12:58,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:12:58,947 INFO L87 Difference]: Start difference. First operand 2608 states and 7304 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:12:59,066 INFO L93 Difference]: Finished difference Result 2128 states and 5982 transitions. [2021-08-21 17:12:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:12:59,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-08-21 17:12:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:12:59,067 INFO L225 Difference]: With dead ends: 2128 [2021-08-21 17:12:59,067 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:12:59,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 122.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:12:59,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:12:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:12:59,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:12:59,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2021-08-21 17:12:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:12:59,068 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:12:59,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:12:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:12:59,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:12:59,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 17:12:59,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:12:59,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:12:59,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:12:59,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 17:12:59,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 17:12:59,076 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:12:59,076 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:12:59,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:12:59 BasicIcfg [2021-08-21 17:12:59,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:12:59,081 INFO L168 Benchmark]: Toolchain (without parser) took 12977.61 ms. Allocated memory was 185.6 MB in the beginning and 4.3 GB in the end (delta: 4.1 GB). Free memory was 149.3 MB in the beginning and 3.8 GB in the end (delta: -3.6 GB). Peak memory consumption was 510.7 MB. Max. memory is 8.0 GB. [2021-08-21 17:12:59,081 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 185.6 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:12:59,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.00 ms. Allocated memory is still 185.6 MB. Free memory was 149.3 MB in the beginning and 158.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-21 17:12:59,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.09 ms. Allocated memory is still 185.6 MB. Free memory was 158.4 MB in the beginning and 156.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:12:59,082 INFO L168 Benchmark]: Boogie Preprocessor took 28.75 ms. Allocated memory is still 185.6 MB. Free memory was 156.3 MB in the beginning and 154.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:12:59,083 INFO L168 Benchmark]: RCFGBuilder took 557.89 ms. Allocated memory is still 185.6 MB. Free memory was 154.8 MB in the beginning and 128.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-08-21 17:12:59,083 INFO L168 Benchmark]: TraceAbstraction took 11924.28 ms. Allocated memory was 185.6 MB in the beginning and 4.3 GB in the end (delta: 4.1 GB). Free memory was 128.0 MB in the beginning and 3.8 GB in the end (delta: -3.6 GB). Peak memory consumption was 489.5 MB. Max. memory is 8.0 GB. [2021-08-21 17:12:59,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 185.6 MB. Free memory is still 167.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 423.00 ms. Allocated memory is still 185.6 MB. Free memory was 149.3 MB in the beginning and 158.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.09 ms. Allocated memory is still 185.6 MB. Free memory was 158.4 MB in the beginning and 156.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.75 ms. Allocated memory is still 185.6 MB. Free memory was 156.3 MB in the beginning and 154.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 557.89 ms. Allocated memory is still 185.6 MB. Free memory was 154.8 MB in the beginning and 128.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11924.28 ms. Allocated memory was 185.6 MB in the beginning and 4.3 GB in the end (delta: 4.1 GB). Free memory was 128.0 MB in the beginning and 3.8 GB in the end (delta: -3.6 GB). Peak memory consumption was 489.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 184958, positive: 180850, positive conditional: 180850, positive unconditional: 0, negative: 4108, negative conditional: 4108, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 184421, positive: 180850, positive conditional: 0, positive unconditional: 180850, negative: 3571, negative conditional: 0, negative unconditional: 3571, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1119, positive: 1099, positive conditional: 0, positive unconditional: 1099, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1119, positive: 1090, positive conditional: 0, positive unconditional: 1090, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 29, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 103, positive: 62, positive conditional: 0, positive unconditional: 62, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 184421, positive: 179751, positive conditional: 0, positive unconditional: 179751, negative: 3551, negative conditional: 0, negative unconditional: 3551, unknown: 1119, unknown conditional: 0, unknown unconditional: 1119] , Statistics on independence cache: Total cache size (in pairs): 1119, Positive cache size: 1099, Positive conditional cache size: 0, Positive unconditional cache size: 1099, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Independence queries for same thread: 537 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 134 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 11814.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 340.0ms, AutomataDifference: 3585.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3280.6ms, PartialOrderReductionTime: 3264.9ms, HoareTripleCheckerStatistics: 1156 SDtfs, 1961 SDslu, 3815 SDs, 0 SdLazy, 291 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 300.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1547.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38833occurred in iteration=0, InterpolantAutomatonStates: 106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2673.7ms AutomataMinimizationTime, 9 MinimizatonAttempts, 1548 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.3ms SsaConstructionTime, 226.4ms SatisfiabilityAnalysisTime, 1440.5ms InterpolantComputationTime, 588 NumberOfCodeBlocks, 588 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 579 ConstructedInterpolants, 0 QuantifiedInterpolants, 2391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 17:12:59,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...