/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/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 16:37:37,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 16:37:37,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 16:37:37,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 16:37:37,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 16:37:37,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 16:37:37,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 16:37:37,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 16:37:37,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 16:37:37,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 16:37:37,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 16:37:37,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 16:37:37,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 16:37:37,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 16:37:37,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 16:37:37,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 16:37:37,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 16:37:37,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 16:37:37,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 16:37:37,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 16:37:37,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 16:37:37,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 16:37:37,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 16:37:37,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 16:37:37,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 16:37:37,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-21 16:37:37,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-21 16:37:37,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-21 16:37:37,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-21 16:37:37,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-21 16:37:37,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-21 16:37:37,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-21 16:37:37,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-21 16:37:37,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 16:37:37,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 16:37:37,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 16:37:37,275 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 16:37:37,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 16:37:37,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 16:37:37,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 16:37:37,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 16:37:37,323 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 16:37:37,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 16:37:37,324 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 16:37:37,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 16:37:37,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 16:37:37,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 16:37:37,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 16:37:37,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 16:37:37,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 16:37:37,325 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 16:37:37,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 16:37:37,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 16:37:37,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 16:37:37,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 16:37:37,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 16:37:37,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 16:37:37,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 16:37:37,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 16:37:37,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 16:37:37,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 16:37:37,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 16:37:37,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 16:37:37,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 16:37:37,328 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 16:37:37,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 16:37:37,328 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 16:37:37,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 16:37:37,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 16:37:37,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 16:37:37,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 16:37:37,646 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 16:37:37,647 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 16:37:37,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2021-08-21 16:37:37,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a91642f7/d931a9e83c2145fba08a9af884fcf6ca/FLAG8710862f8 [2021-08-21 16:37:38,541 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 16:37:38,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2021-08-21 16:37:38,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a91642f7/d931a9e83c2145fba08a9af884fcf6ca/FLAG8710862f8 [2021-08-21 16:37:38,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a91642f7/d931a9e83c2145fba08a9af884fcf6ca [2021-08-21 16:37:38,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 16:37:38,758 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 16:37:38,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 16:37:38,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 16:37:38,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 16:37:38,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:37:38" (1/1) ... [2021-08-21 16:37:38,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25af0bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:38, skipping insertion in model container [2021-08-21 16:37:38,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:37:38" (1/1) ... [2021-08-21 16:37:38,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 16:37:38,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 16:37:39,241 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/stack-1.i[41520,41533] [2021-08-21 16:37:39,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 16:37:39,284 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 16:37:39,321 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/stack-1.i[41520,41533] [2021-08-21 16:37:39,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 16:37:39,398 INFO L208 MainTranslator]: Completed translation [2021-08-21 16:37:39,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39 WrapperNode [2021-08-21 16:37:39,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 16:37:39,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 16:37:39,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 16:37:39,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 16:37:39,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (1/1) ... [2021-08-21 16:37:39,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (1/1) ... [2021-08-21 16:37:39,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 16:37:39,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 16:37:39,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 16:37:39,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 16:37:39,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (1/1) ... [2021-08-21 16:37:39,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (1/1) ... [2021-08-21 16:37:39,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (1/1) ... [2021-08-21 16:37:39,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (1/1) ... [2021-08-21 16:37:39,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (1/1) ... [2021-08-21 16:37:39,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (1/1) ... [2021-08-21 16:37:39,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (1/1) ... [2021-08-21 16:37:39,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 16:37:39,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 16:37:39,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 16:37:39,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 16:37:39,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (1/1) ... [2021-08-21 16:37:39,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 16:37:39,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:37:39,502 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 16:37:39,521 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 16:37:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-08-21 16:37:39,550 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-08-21 16:37:39,551 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-08-21 16:37:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-08-21 16:37:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 16:37:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 16:37:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-21 16:37:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 16:37:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-21 16:37:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 16:37:39,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 16:37:39,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 16:37:39,554 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 16:37:40,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 16:37:40,077 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-21 16:37:40,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:37:40 BoogieIcfgContainer [2021-08-21 16:37:40,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 16:37:40,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 16:37:40,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 16:37:40,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 16:37:40,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:37:38" (1/3) ... [2021-08-21 16:37:40,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5827c564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:37:40, skipping insertion in model container [2021-08-21 16:37:40,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:37:39" (2/3) ... [2021-08-21 16:37:40,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5827c564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:37:40, skipping insertion in model container [2021-08-21 16:37:40,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:37:40" (3/3) ... [2021-08-21 16:37:40,088 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2021-08-21 16:37:40,093 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 16:37:40,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 16:37:40,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-21 16:37:40,093 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 16:37:40,148 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,148 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,148 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,149 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,149 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,149 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,149 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,149 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,150 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,150 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,150 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,150 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,150 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,150 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,150 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,150 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,151 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,151 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,151 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,151 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,151 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,152 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,152 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,152 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,152 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,153 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,153 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,153 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,153 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,153 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,154 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,154 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,154 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,155 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,155 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,155 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,155 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,155 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,156 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,156 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,156 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,156 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,156 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,156 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,156 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,157 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,157 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,157 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,157 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,157 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,157 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,157 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,157 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,158 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,158 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,158 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,158 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,158 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,158 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,159 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,159 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,159 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,159 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,159 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,159 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,160 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,160 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,160 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,160 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,161 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,161 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,161 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,162 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,162 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,162 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,162 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,162 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,162 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,162 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,163 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,164 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,165 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,165 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,165 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,166 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,166 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,167 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,170 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,176 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,176 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,176 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,176 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,176 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,176 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,176 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,176 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,176 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,177 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,177 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,177 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,177 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,177 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,177 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,177 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,177 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,177 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,178 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,178 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,178 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,178 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,178 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,178 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,178 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,178 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,178 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,179 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,179 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,179 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,179 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,179 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,179 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,179 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,179 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,179 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,180 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,180 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,180 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,180 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,180 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,180 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,181 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,182 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,182 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,183 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,183 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,184 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,185 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,186 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,186 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,186 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,186 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,186 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,186 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,186 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,186 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,186 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,187 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,187 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,187 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,187 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,187 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,187 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,187 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,187 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,187 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,188 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,193 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,194 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,194 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,194 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,195 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,195 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,195 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,195 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,195 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,195 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,196 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,197 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,201 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,201 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,201 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,201 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,201 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,201 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,201 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,202 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,202 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,203 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,205 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,205 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,205 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,206 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,206 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,206 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,206 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,206 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,206 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,206 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,206 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,206 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,206 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,207 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,207 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,207 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,207 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,207 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,207 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,207 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,207 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,207 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,208 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,218 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,218 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,218 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,218 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,218 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,219 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,219 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,219 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,219 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,219 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,219 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,219 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,219 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,219 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,220 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,220 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,220 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,220 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:37:40,225 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-21 16:37:40,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 16:37:40,259 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 16:37:40,259 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-21 16:37:40,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 8270 states, 7851 states have (on average 1.4052986880652145) internal successors, (11033), 8269 states have internal predecessors, (11033), 0 states have call successors, (0), 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 16:37:40,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 16:37:40,960 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:37:40,960 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] [2021-08-21 16:37:40,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:37:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:37:40,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1528783349, now seen corresponding path program 1 times [2021-08-21 16:37:40,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:37:40,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611522909] [2021-08-21 16:37:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:40,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:37:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:41,225 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 16:37:41,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:37:41,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611522909] [2021-08-21 16:37:41,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611522909] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:37:41,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 16:37:41,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 16:37:41,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012374205] [2021-08-21 16:37:41,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 16:37:41,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:37:41,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 16:37:41,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 16:37:41,256 INFO L87 Difference]: Start difference. First operand has 8270 states, 7851 states have (on average 1.4052986880652145) internal successors, (11033), 8269 states have internal predecessors, (11033), 0 states have call successors, (0), 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 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 16:37:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:37:41,362 INFO L93 Difference]: Finished difference Result 11461 states and 14302 transitions. [2021-08-21 16:37:41,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 16:37:41,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-08-21 16:37:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:37:41,412 INFO L225 Difference]: With dead ends: 11461 [2021-08-21 16:37:41,413 INFO L226 Difference]: Without dead ends: 9900 [2021-08-21 16:37:41,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 16:37:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9900 states. [2021-08-21 16:37:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9900 to 9330. [2021-08-21 16:37:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9330 states, 9149 states have (on average 1.3403650672204612) internal successors, (12263), 9329 states have internal predecessors, (12263), 0 states have call successors, (0), 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 16:37:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9330 states to 9330 states and 12263 transitions. [2021-08-21 16:37:41,728 INFO L78 Accepts]: Start accepts. Automaton has 9330 states and 12263 transitions. Word has length 57 [2021-08-21 16:37:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:37:41,729 INFO L470 AbstractCegarLoop]: Abstraction has 9330 states and 12263 transitions. [2021-08-21 16:37:41,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 16:37:41,730 INFO L276 IsEmpty]: Start isEmpty. Operand 9330 states and 12263 transitions. [2021-08-21 16:37:41,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-21 16:37:41,736 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:37:41,737 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 16:37:41,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 16:37:41,738 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:37:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:37:41,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1105220865, now seen corresponding path program 1 times [2021-08-21 16:37:41,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:37:41,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34620140] [2021-08-21 16:37:41,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:41,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:37:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:41,902 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 16:37:41,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:37:41,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34620140] [2021-08-21 16:37:41,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34620140] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:37:41,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 16:37:41,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-21 16:37:41,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670390128] [2021-08-21 16:37:41,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-21 16:37:41,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:37:41,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-21 16:37:41,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 16:37:41,908 INFO L87 Difference]: Start difference. First operand 9330 states and 12263 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 16:37:42,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:37:42,111 INFO L93 Difference]: Finished difference Result 13999 states and 18379 transitions. [2021-08-21 16:37:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-21 16:37:42,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 16:37:42,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:37:42,178 INFO L225 Difference]: With dead ends: 13999 [2021-08-21 16:37:42,179 INFO L226 Difference]: Without dead ends: 13999 [2021-08-21 16:37:42,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-21 16:37:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13999 states. [2021-08-21 16:37:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13999 to 9924. [2021-08-21 16:37:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9924 states, 9743 states have (on average 1.340860104690547) internal successors, (13064), 9923 states have internal predecessors, (13064), 0 states have call successors, (0), 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 16:37:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 13064 transitions. [2021-08-21 16:37:42,536 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 13064 transitions. Word has length 67 [2021-08-21 16:37:42,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:37:42,537 INFO L470 AbstractCegarLoop]: Abstraction has 9924 states and 13064 transitions. [2021-08-21 16:37:42,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 16:37:42,538 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 13064 transitions. [2021-08-21 16:37:42,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-08-21 16:37:42,543 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:37:42,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:37:42,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 16:37:42,544 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:37:42,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:37:42,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1759640119, now seen corresponding path program 1 times [2021-08-21 16:37:42,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:37:42,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180738803] [2021-08-21 16:37:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:42,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:37:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:42,654 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 16:37:42,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:37:42,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180738803] [2021-08-21 16:37:42,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180738803] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:37:42,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 16:37:42,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 16:37:42,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276156550] [2021-08-21 16:37:42,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 16:37:42,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:37:42,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 16:37:42,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 16:37:42,660 INFO L87 Difference]: Start difference. First operand 9924 states and 13064 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 16:37:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:37:42,764 INFO L93 Difference]: Finished difference Result 15481 states and 20083 transitions. [2021-08-21 16:37:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 16:37:42,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-08-21 16:37:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:37:42,865 INFO L225 Difference]: With dead ends: 15481 [2021-08-21 16:37:42,866 INFO L226 Difference]: Without dead ends: 15481 [2021-08-21 16:37:42,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 16:37:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15481 states. [2021-08-21 16:37:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15481 to 14399. [2021-08-21 16:37:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14399 states, 14218 states have (on average 1.3258545505697004) internal successors, (18851), 14398 states have internal predecessors, (18851), 0 states have call successors, (0), 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 16:37:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14399 states to 14399 states and 18851 transitions. [2021-08-21 16:37:43,214 INFO L78 Accepts]: Start accepts. Automaton has 14399 states and 18851 transitions. Word has length 85 [2021-08-21 16:37:43,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:37:43,215 INFO L470 AbstractCegarLoop]: Abstraction has 14399 states and 18851 transitions. [2021-08-21 16:37:43,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 16:37:43,215 INFO L276 IsEmpty]: Start isEmpty. Operand 14399 states and 18851 transitions. [2021-08-21 16:37:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-08-21 16:37:43,223 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:37:43,223 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:37:43,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 16:37:43,223 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:37:43,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:37:43,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2063999998, now seen corresponding path program 1 times [2021-08-21 16:37:43,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:37:43,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711763148] [2021-08-21 16:37:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:43,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:37:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:37:43,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:37:43,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711763148] [2021-08-21 16:37:43,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711763148] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:37:43,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698042115] [2021-08-21 16:37:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:43,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:37:43,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:37:43,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:37:43,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-21 16:37:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:43,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-21 16:37:43,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:37:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:37:43,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698042115] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:37:43,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:37:43,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-21 16:37:43,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517312884] [2021-08-21 16:37:43,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 16:37:43,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:37:43,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 16:37:43,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-21 16:37:43,934 INFO L87 Difference]: Start difference. First operand 14399 states and 18851 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 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 16:37:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:37:44,154 INFO L93 Difference]: Finished difference Result 21328 states and 27391 transitions. [2021-08-21 16:37:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 16:37:44,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 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 92 [2021-08-21 16:37:44,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:37:44,211 INFO L225 Difference]: With dead ends: 21328 [2021-08-21 16:37:44,212 INFO L226 Difference]: Without dead ends: 21200 [2021-08-21 16:37:44,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-08-21 16:37:44,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21200 states. [2021-08-21 16:37:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21200 to 16980. [2021-08-21 16:37:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16980 states, 16799 states have (on average 1.3332341210786356) internal successors, (22397), 16979 states have internal predecessors, (22397), 0 states have call successors, (0), 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 16:37:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16980 states to 16980 states and 22397 transitions. [2021-08-21 16:37:44,664 INFO L78 Accepts]: Start accepts. Automaton has 16980 states and 22397 transitions. Word has length 92 [2021-08-21 16:37:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:37:44,666 INFO L470 AbstractCegarLoop]: Abstraction has 16980 states and 22397 transitions. [2021-08-21 16:37:44,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 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 16:37:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 16980 states and 22397 transitions. [2021-08-21 16:37:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-08-21 16:37:44,677 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:37:44,677 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, 1, 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 16:37:44,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-21 16:37:44,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:37:44,902 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:37:44,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:37:44,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1224342591, now seen corresponding path program 1 times [2021-08-21 16:37:44,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:37:44,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121439857] [2021-08-21 16:37:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:44,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:37:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:44,967 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 16:37:44,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:37:44,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121439857] [2021-08-21 16:37:44,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121439857] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:37:44,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 16:37:44,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 16:37:44,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338581514] [2021-08-21 16:37:44,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 16:37:44,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:37:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 16:37:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 16:37:44,969 INFO L87 Difference]: Start difference. First operand 16980 states and 22397 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 16:37:45,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:37:45,003 INFO L93 Difference]: Finished difference Result 5868 states and 6985 transitions. [2021-08-21 16:37:45,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 16:37:45,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-08-21 16:37:45,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:37:45,010 INFO L225 Difference]: With dead ends: 5868 [2021-08-21 16:37:45,011 INFO L226 Difference]: Without dead ends: 3387 [2021-08-21 16:37:45,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 16:37:45,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2021-08-21 16:37:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2843. [2021-08-21 16:37:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2843 states, 2798 states have (on average 1.2165832737669764) internal successors, (3404), 2842 states have internal predecessors, (3404), 0 states have call successors, (0), 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 16:37:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 3404 transitions. [2021-08-21 16:37:45,142 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 3404 transitions. Word has length 95 [2021-08-21 16:37:45,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:37:45,143 INFO L470 AbstractCegarLoop]: Abstraction has 2843 states and 3404 transitions. [2021-08-21 16:37:45,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 16:37:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 3404 transitions. [2021-08-21 16:37:45,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-08-21 16:37:45,152 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:37:45,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:45,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 16:37:45,152 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:37:45,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:37:45,153 INFO L82 PathProgramCache]: Analyzing trace with hash -92809645, now seen corresponding path program 1 times [2021-08-21 16:37:45,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:37:45,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141415080] [2021-08-21 16:37:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:45,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:37:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:46,566 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 16:37:46,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:37:46,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141415080] [2021-08-21 16:37:46,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141415080] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:37:46,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 16:37:46,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-08-21 16:37:46,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108805377] [2021-08-21 16:37:46,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-21 16:37:46,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:37:46,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-21 16:37:46,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2021-08-21 16:37:46,569 INFO L87 Difference]: Start difference. First operand 2843 states and 3404 transitions. Second operand has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:37:49,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:37:49,138 INFO L93 Difference]: Finished difference Result 5672 states and 6796 transitions. [2021-08-21 16:37:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 16:37:49,139 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-08-21 16:37:49,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:37:49,149 INFO L225 Difference]: With dead ends: 5672 [2021-08-21 16:37:49,149 INFO L226 Difference]: Without dead ends: 5201 [2021-08-21 16:37:49,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 1990.2ms TimeCoverageRelationStatistics Valid=400, Invalid=2462, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 16:37:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5201 states. [2021-08-21 16:37:49,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5201 to 3663. [2021-08-21 16:37:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 3618 states have (on average 1.2125483692647872) internal successors, (4387), 3662 states have internal predecessors, (4387), 0 states have call successors, (0), 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 16:37:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 4387 transitions. [2021-08-21 16:37:49,211 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 4387 transitions. Word has length 102 [2021-08-21 16:37:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:37:49,211 INFO L470 AbstractCegarLoop]: Abstraction has 3663 states and 4387 transitions. [2021-08-21 16:37:49,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:37:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 4387 transitions. [2021-08-21 16:37:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-08-21 16:37:49,217 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:37:49,217 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:37:49,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 16:37:49,218 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:37:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:37:49,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1734364479, now seen corresponding path program 2 times [2021-08-21 16:37:49,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:37:49,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506006009] [2021-08-21 16:37:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:49,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:37:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:37:49,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:37:49,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506006009] [2021-08-21 16:37:49,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506006009] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:37:49,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999015994] [2021-08-21 16:37:49,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 16:37:49,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:37:49,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:37:49,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:37:49,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-21 16:37:49,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 16:37:49,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:37:49,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-21 16:37:49,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:37:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:37:50,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999015994] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:37:50,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:37:50,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-08-21 16:37:50,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485394271] [2021-08-21 16:37:50,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 16:37:50,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:37:50,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 16:37:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-21 16:37:50,084 INFO L87 Difference]: Start difference. First operand 3663 states and 4387 transitions. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 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 16:37:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:37:50,203 INFO L93 Difference]: Finished difference Result 5436 states and 6562 transitions. [2021-08-21 16:37:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 16:37:50,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-08-21 16:37:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:37:50,215 INFO L225 Difference]: With dead ends: 5436 [2021-08-21 16:37:50,215 INFO L226 Difference]: Without dead ends: 5436 [2021-08-21 16:37:50,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-08-21 16:37:50,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2021-08-21 16:37:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 4139. [2021-08-21 16:37:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4139 states, 4094 states have (on average 1.2078651685393258) internal successors, (4945), 4138 states have internal predecessors, (4945), 0 states have call successors, (0), 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 16:37:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 4945 transitions. [2021-08-21 16:37:50,318 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 4945 transitions. Word has length 126 [2021-08-21 16:37:50,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:37:50,318 INFO L470 AbstractCegarLoop]: Abstraction has 4139 states and 4945 transitions. [2021-08-21 16:37:50,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 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 16:37:50,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 4945 transitions. [2021-08-21 16:37:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-08-21 16:37:50,326 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:37:50,326 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:37:50,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-21 16:37:50,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-21 16:37:50,541 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:37:50,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:37:50,542 INFO L82 PathProgramCache]: Analyzing trace with hash 905951090, now seen corresponding path program 1 times [2021-08-21 16:37:50,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:37:50,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218299698] [2021-08-21 16:37:50,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:50,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:37:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:37:51,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:37:51,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218299698] [2021-08-21 16:37:51,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218299698] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:37:51,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482984047] [2021-08-21 16:37:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:51,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:37:51,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:37:51,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:37:51,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-21 16:37:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:51,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 58 conjunts are in the unsatisfiable core [2021-08-21 16:37:51,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:37:53,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-21 16:37:54,017 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:37:54,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:37:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:37:54,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482984047] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:37:54,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:37:54,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 36 [2021-08-21 16:37:54,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664889407] [2021-08-21 16:37:54,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-08-21 16:37:54,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:37:54,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-08-21 16:37:54,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 16:37:54,324 INFO L87 Difference]: Start difference. First operand 4139 states and 4945 transitions. Second operand has 36 states, 36 states have (on average 4.444444444444445) internal successors, (160), 36 states have internal predecessors, (160), 0 states have call successors, (0), 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 16:37:58,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:37:58,342 INFO L93 Difference]: Finished difference Result 7613 states and 9193 transitions. [2021-08-21 16:37:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 16:37:58,342 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.444444444444445) internal successors, (160), 36 states have internal predecessors, (160), 0 states have call successors, (0), 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 136 [2021-08-21 16:37:58,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:37:58,355 INFO L225 Difference]: With dead ends: 7613 [2021-08-21 16:37:58,355 INFO L226 Difference]: Without dead ends: 7613 [2021-08-21 16:37:58,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 120 SyntacticMatches, 7 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 3542.1ms TimeCoverageRelationStatistics Valid=692, Invalid=4710, Unknown=0, NotChecked=0, Total=5402 [2021-08-21 16:37:58,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2021-08-21 16:37:58,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 5338. [2021-08-21 16:37:58,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5293 states have (on average 1.2182127337993576) internal successors, (6448), 5337 states have internal predecessors, (6448), 0 states have call successors, (0), 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 16:37:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 6448 transitions. [2021-08-21 16:37:58,446 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 6448 transitions. Word has length 136 [2021-08-21 16:37:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:37:58,447 INFO L470 AbstractCegarLoop]: Abstraction has 5338 states and 6448 transitions. [2021-08-21 16:37:58,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.444444444444445) internal successors, (160), 36 states have internal predecessors, (160), 0 states have call successors, (0), 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 16:37:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 6448 transitions. [2021-08-21 16:37:58,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-08-21 16:37:58,457 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:37:58,457 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:37:58,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-21 16:37:58,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:37:58,677 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:37:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:37:58,677 INFO L82 PathProgramCache]: Analyzing trace with hash -791357996, now seen corresponding path program 2 times [2021-08-21 16:37:58,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:37:58,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771630206] [2021-08-21 16:37:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:37:58,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:37:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:37:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:37:59,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:37:59,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771630206] [2021-08-21 16:37:59,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771630206] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:37:59,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615505614] [2021-08-21 16:37:59,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 16:37:59,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:37:59,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:37:59,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:37:59,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-21 16:38:00,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-21 16:38:00,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:38:00,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 60 conjunts are in the unsatisfiable core [2021-08-21 16:38:00,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:38:00,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:38:00,466 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:38:00,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:38:00,698 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-08-21 16:38:00,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-08-21 16:38:00,835 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-08-21 16:38:00,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-08-21 16:38:01,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-21 16:38:01,978 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-08-21 16:38:01,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 42 [2021-08-21 16:38:02,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-08-21 16:38:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-21 16:38:03,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615505614] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:03,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:38:03,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 27] total 57 [2021-08-21 16:38:03,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984049501] [2021-08-21 16:38:03,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-08-21 16:38:03,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:38:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-08-21 16:38:03,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3025, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 16:38:03,253 INFO L87 Difference]: Start difference. First operand 5338 states and 6448 transitions. Second operand has 57 states, 57 states have (on average 4.491228070175438) internal successors, (256), 57 states have internal predecessors, (256), 0 states have call successors, (0), 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 16:38:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:38:29,770 INFO L93 Difference]: Finished difference Result 13411 states and 16291 transitions. [2021-08-21 16:38:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-08-21 16:38:29,770 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.491228070175438) internal successors, (256), 57 states have internal predecessors, (256), 0 states have call successors, (0), 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 136 [2021-08-21 16:38:29,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:38:29,791 INFO L225 Difference]: With dead ends: 13411 [2021-08-21 16:38:29,792 INFO L226 Difference]: Without dead ends: 13411 [2021-08-21 16:38:29,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12367 ImplicationChecksByTransitivity, 25409.0ms TimeCoverageRelationStatistics Valid=4279, Invalid=33941, Unknown=0, NotChecked=0, Total=38220 [2021-08-21 16:38:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13411 states. [2021-08-21 16:38:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13411 to 6059. [2021-08-21 16:38:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6059 states, 6014 states have (on average 1.2291320252743598) internal successors, (7392), 6058 states have internal predecessors, (7392), 0 states have call successors, (0), 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 16:38:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6059 states to 6059 states and 7392 transitions. [2021-08-21 16:38:29,921 INFO L78 Accepts]: Start accepts. Automaton has 6059 states and 7392 transitions. Word has length 136 [2021-08-21 16:38:29,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:38:29,921 INFO L470 AbstractCegarLoop]: Abstraction has 6059 states and 7392 transitions. [2021-08-21 16:38:29,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.491228070175438) internal successors, (256), 57 states have internal predecessors, (256), 0 states have call successors, (0), 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 16:38:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6059 states and 7392 transitions. [2021-08-21 16:38:29,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-08-21 16:38:29,933 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:38:29,933 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:38:29,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-21 16:38:30,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:38:30,149 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:38:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:38:30,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1862736320, now seen corresponding path program 3 times [2021-08-21 16:38:30,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:38:30,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465941732] [2021-08-21 16:38:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:38:30,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:38:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:38:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:38:30,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:38:30,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465941732] [2021-08-21 16:38:30,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465941732] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:30,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556780322] [2021-08-21 16:38:30,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 16:38:30,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:38:30,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:38:30,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:38:30,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-21 16:38:30,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 16:38:30,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:38:30,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-21 16:38:30,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:38:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:38:31,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556780322] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:31,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:38:31,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-08-21 16:38:31,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955196922] [2021-08-21 16:38:31,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 16:38:31,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:38:31,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 16:38:31,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-21 16:38:31,304 INFO L87 Difference]: Start difference. First operand 6059 states and 7392 transitions. Second operand has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:38:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:38:31,453 INFO L93 Difference]: Finished difference Result 8867 states and 10880 transitions. [2021-08-21 16:38:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-21 16:38:31,453 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-08-21 16:38:31,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:38:31,462 INFO L225 Difference]: With dead ends: 8867 [2021-08-21 16:38:31,462 INFO L226 Difference]: Without dead ends: 8867 [2021-08-21 16:38:31,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2021-08-21 16:38:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8867 states. [2021-08-21 16:38:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8867 to 6671. [2021-08-21 16:38:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6671 states, 6626 states have (on average 1.2241171143978267) internal successors, (8111), 6670 states have internal predecessors, (8111), 0 states have call successors, (0), 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 16:38:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6671 states to 6671 states and 8111 transitions. [2021-08-21 16:38:31,560 INFO L78 Accepts]: Start accepts. Automaton has 6671 states and 8111 transitions. Word has length 160 [2021-08-21 16:38:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:38:31,560 INFO L470 AbstractCegarLoop]: Abstraction has 6671 states and 8111 transitions. [2021-08-21 16:38:31,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:38:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 6671 states and 8111 transitions. [2021-08-21 16:38:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-08-21 16:38:31,572 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:38:31,573 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:38:31,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-21 16:38:31,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-21 16:38:31,801 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:38:31,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:38:31,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1040688782, now seen corresponding path program 1 times [2021-08-21 16:38:31,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:38:31,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475029432] [2021-08-21 16:38:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:38:31,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:38:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:38:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-21 16:38:31,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:38:31,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475029432] [2021-08-21 16:38:31,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475029432] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:31,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305755451] [2021-08-21 16:38:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:38:31,904 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:38:31,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:38:31,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:38:31,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-21 16:38:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:38:32,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-21 16:38:32,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:38:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-08-21 16:38:32,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305755451] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:32,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:38:32,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2021-08-21 16:38:32,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299407919] [2021-08-21 16:38:32,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 16:38:32,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:38:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 16:38:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-21 16:38:32,969 INFO L87 Difference]: Start difference. First operand 6671 states and 8111 transitions. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 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 16:38:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:38:33,096 INFO L93 Difference]: Finished difference Result 8079 states and 9817 transitions. [2021-08-21 16:38:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 16:38:33,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-08-21 16:38:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:38:33,105 INFO L225 Difference]: With dead ends: 8079 [2021-08-21 16:38:33,105 INFO L226 Difference]: Without dead ends: 7647 [2021-08-21 16:38:33,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-08-21 16:38:33,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7647 states. [2021-08-21 16:38:33,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7647 to 6927. [2021-08-21 16:38:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6927 states, 6882 states have (on average 1.2234815460621913) internal successors, (8420), 6926 states have internal predecessors, (8420), 0 states have call successors, (0), 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 16:38:33,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6927 states to 6927 states and 8420 transitions. [2021-08-21 16:38:33,198 INFO L78 Accepts]: Start accepts. Automaton has 6927 states and 8420 transitions. Word has length 161 [2021-08-21 16:38:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:38:33,198 INFO L470 AbstractCegarLoop]: Abstraction has 6927 states and 8420 transitions. [2021-08-21 16:38:33,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 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 16:38:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6927 states and 8420 transitions. [2021-08-21 16:38:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-08-21 16:38:33,209 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:38:33,209 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:38:33,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-21 16:38:33,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:38:33,437 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:38:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:38:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1739263856, now seen corresponding path program 2 times [2021-08-21 16:38:33,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:38:33,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782912852] [2021-08-21 16:38:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:38:33,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:38:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:38:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-21 16:38:33,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:38:33,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782912852] [2021-08-21 16:38:33,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782912852] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:33,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363045844] [2021-08-21 16:38:33,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 16:38:33,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:38:33,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:38:33,534 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:38:33,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-21 16:38:34,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 16:38:34,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:38:34,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-21 16:38:34,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:38:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-21 16:38:34,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363045844] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:34,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:38:34,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-08-21 16:38:34,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992154269] [2021-08-21 16:38:34,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 16:38:34,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:38:34,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 16:38:34,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-21 16:38:34,695 INFO L87 Difference]: Start difference. First operand 6927 states and 8420 transitions. Second operand has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:38:34,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:38:34,819 INFO L93 Difference]: Finished difference Result 9753 states and 11897 transitions. [2021-08-21 16:38:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-21 16:38:34,820 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-08-21 16:38:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:38:34,829 INFO L225 Difference]: With dead ends: 9753 [2021-08-21 16:38:34,829 INFO L226 Difference]: Without dead ends: 9753 [2021-08-21 16:38:34,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 75.5ms TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-08-21 16:38:34,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9753 states. [2021-08-21 16:38:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9753 to 8403. [2021-08-21 16:38:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8403 states, 8358 states have (on average 1.2353433835845895) internal successors, (10325), 8402 states have internal predecessors, (10325), 0 states have call successors, (0), 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 16:38:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8403 states to 8403 states and 10325 transitions. [2021-08-21 16:38:34,923 INFO L78 Accepts]: Start accepts. Automaton has 8403 states and 10325 transitions. Word has length 161 [2021-08-21 16:38:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:38:34,924 INFO L470 AbstractCegarLoop]: Abstraction has 8403 states and 10325 transitions. [2021-08-21 16:38:34,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:38:34,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8403 states and 10325 transitions. [2021-08-21 16:38:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-08-21 16:38:34,936 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:38:34,936 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:38:34,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-21 16:38:35,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:38:35,153 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:38:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:38:35,153 INFO L82 PathProgramCache]: Analyzing trace with hash -123257968, now seen corresponding path program 1 times [2021-08-21 16:38:35,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:38:35,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239618666] [2021-08-21 16:38:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:38:35,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:38:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:38:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:38:36,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:38:36,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239618666] [2021-08-21 16:38:36,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239618666] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:36,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742205225] [2021-08-21 16:38:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:38:36,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:38:36,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:38:36,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:38:36,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-21 16:38:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:38:37,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 94 conjunts are in the unsatisfiable core [2021-08-21 16:38:37,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:38:37,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:38:37,331 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:38:37,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:38:37,585 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-08-21 16:38:37,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-08-21 16:38:37,722 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-08-21 16:38:37,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-08-21 16:38:38,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-21 16:38:38,536 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:38:38,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-21 16:38:39,282 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-08-21 16:38:39,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 29 [2021-08-21 16:38:40,553 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:38:40,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:38:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:38:40,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742205225] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:40,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:38:40,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 38] total 51 [2021-08-21 16:38:40,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316191023] [2021-08-21 16:38:40,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-08-21 16:38:40,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:38:40,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-08-21 16:38:40,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2376, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 16:38:40,817 INFO L87 Difference]: Start difference. First operand 8403 states and 10325 transitions. Second operand has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 51 states have internal predecessors, (244), 0 states have call successors, (0), 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 16:38:46,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:38:46,014 INFO L93 Difference]: Finished difference Result 12804 states and 15692 transitions. [2021-08-21 16:38:46,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 16:38:46,015 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 51 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-08-21 16:38:46,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:38:46,028 INFO L225 Difference]: With dead ends: 12804 [2021-08-21 16:38:46,028 INFO L226 Difference]: Without dead ends: 11889 [2021-08-21 16:38:46,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 143 SyntacticMatches, 10 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2887 ImplicationChecksByTransitivity, 4625.4ms TimeCoverageRelationStatistics Valid=925, Invalid=8975, Unknown=0, NotChecked=0, Total=9900 [2021-08-21 16:38:46,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11889 states. [2021-08-21 16:38:46,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11889 to 8863. [2021-08-21 16:38:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8863 states, 8818 states have (on average 1.2310047629848038) internal successors, (10855), 8862 states have internal predecessors, (10855), 0 states have call successors, (0), 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 16:38:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8863 states to 8863 states and 10855 transitions. [2021-08-21 16:38:46,144 INFO L78 Accepts]: Start accepts. Automaton has 8863 states and 10855 transitions. Word has length 165 [2021-08-21 16:38:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:38:46,145 INFO L470 AbstractCegarLoop]: Abstraction has 8863 states and 10855 transitions. [2021-08-21 16:38:46,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 51 states have internal predecessors, (244), 0 states have call successors, (0), 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 16:38:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 8863 states and 10855 transitions. [2021-08-21 16:38:46,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-08-21 16:38:46,157 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:38:46,157 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:38:46,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-21 16:38:46,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-21 16:38:46,373 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:38:46,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:38:46,373 INFO L82 PathProgramCache]: Analyzing trace with hash -399994770, now seen corresponding path program 2 times [2021-08-21 16:38:46,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:38:46,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445987225] [2021-08-21 16:38:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:38:46,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:38:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:38:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:38:47,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:38:47,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445987225] [2021-08-21 16:38:47,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445987225] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:47,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38809250] [2021-08-21 16:38:47,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 16:38:47,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:38:47,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:38:47,797 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:38:47,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-21 16:38:48,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 16:38:48,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:38:48,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 81 conjunts are in the unsatisfiable core [2021-08-21 16:38:48,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:38:48,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:38:48,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-08-21 16:38:48,951 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:38:48,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:38:49,173 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-21 16:38:49,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-08-21 16:38:49,244 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-21 16:38:49,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-08-21 16:38:50,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2021-08-21 16:38:51,652 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:38:51,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 42 [2021-08-21 16:38:51,683 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:38:51,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 36 [2021-08-21 16:38:53,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2021-08-21 16:38:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:38:53,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38809250] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:38:53,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:38:53,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 34] total 68 [2021-08-21 16:38:53,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419504762] [2021-08-21 16:38:53,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-08-21 16:38:53,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:38:53,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-08-21 16:38:53,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=4305, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 16:38:53,667 INFO L87 Difference]: Start difference. First operand 8863 states and 10855 transitions. Second operand has 68 states, 68 states have (on average 4.382352941176471) internal successors, (298), 68 states have internal predecessors, (298), 0 states have call successors, (0), 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 16:39:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:39:04,378 INFO L93 Difference]: Finished difference Result 17346 states and 21194 transitions. [2021-08-21 16:39:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-08-21 16:39:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.382352941176471) internal successors, (298), 68 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-08-21 16:39:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:39:04,399 INFO L225 Difference]: With dead ends: 17346 [2021-08-21 16:39:04,399 INFO L226 Difference]: Without dead ends: 16443 [2021-08-21 16:39:04,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6622 ImplicationChecksByTransitivity, 10096.0ms TimeCoverageRelationStatistics Valid=1601, Invalid=18139, Unknown=0, NotChecked=0, Total=19740 [2021-08-21 16:39:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16443 states. [2021-08-21 16:39:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16443 to 11687. [2021-08-21 16:39:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11687 states, 11642 states have (on average 1.2273664318845559) internal successors, (14289), 11686 states have internal predecessors, (14289), 0 states have call successors, (0), 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 16:39:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11687 states to 11687 states and 14289 transitions. [2021-08-21 16:39:04,570 INFO L78 Accepts]: Start accepts. Automaton has 11687 states and 14289 transitions. Word has length 165 [2021-08-21 16:39:04,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:39:04,570 INFO L470 AbstractCegarLoop]: Abstraction has 11687 states and 14289 transitions. [2021-08-21 16:39:04,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.382352941176471) internal successors, (298), 68 states have internal predecessors, (298), 0 states have call successors, (0), 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 16:39:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 11687 states and 14289 transitions. [2021-08-21 16:39:04,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-08-21 16:39:04,583 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:39:04,583 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:39:04,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-21 16:39:04,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-21 16:39:04,785 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:39:04,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:39:04,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1174667009, now seen corresponding path program 4 times [2021-08-21 16:39:04,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:39:04,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832712611] [2021-08-21 16:39:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:39:04,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:39:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:39:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:39:04,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:39:04,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832712611] [2021-08-21 16:39:04,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832712611] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:39:04,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101672002] [2021-08-21 16:39:04,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 16:39:04,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:39:04,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:39:04,916 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:39:04,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-21 16:39:06,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 16:39:06,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:39:06,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-21 16:39:06,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:39:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:39:06,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101672002] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:39:06,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:39:06,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-08-21 16:39:06,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719670537] [2021-08-21 16:39:06,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 16:39:06,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:39:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 16:39:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-21 16:39:06,851 INFO L87 Difference]: Start difference. First operand 11687 states and 14289 transitions. Second operand has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 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 16:39:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:39:07,030 INFO L93 Difference]: Finished difference Result 14959 states and 18344 transitions. [2021-08-21 16:39:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 16:39:07,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 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 194 [2021-08-21 16:39:07,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:39:07,051 INFO L225 Difference]: With dead ends: 14959 [2021-08-21 16:39:07,051 INFO L226 Difference]: Without dead ends: 14959 [2021-08-21 16:39:07,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=176, Invalid=330, Unknown=0, NotChecked=0, Total=506 [2021-08-21 16:39:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14959 states. [2021-08-21 16:39:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14959 to 12163. [2021-08-21 16:39:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12163 states, 12118 states have (on average 1.225202178577323) internal successors, (14847), 12162 states have internal predecessors, (14847), 0 states have call successors, (0), 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 16:39:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12163 states to 12163 states and 14847 transitions. [2021-08-21 16:39:07,217 INFO L78 Accepts]: Start accepts. Automaton has 12163 states and 14847 transitions. Word has length 194 [2021-08-21 16:39:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:39:07,217 INFO L470 AbstractCegarLoop]: Abstraction has 12163 states and 14847 transitions. [2021-08-21 16:39:07,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 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 16:39:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 12163 states and 14847 transitions. [2021-08-21 16:39:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-08-21 16:39:07,228 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:39:07,228 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:39:07,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-21 16:39:07,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-21 16:39:07,433 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:39:07,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:39:07,433 INFO L82 PathProgramCache]: Analyzing trace with hash -790127565, now seen corresponding path program 3 times [2021-08-21 16:39:07,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:39:07,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959162451] [2021-08-21 16:39:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:39:07,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:39:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:39:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 130 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-21 16:39:07,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:39:07,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959162451] [2021-08-21 16:39:07,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959162451] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:39:07,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468990963] [2021-08-21 16:39:07,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 16:39:07,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:39:07,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:39:07,562 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:39:07,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-21 16:39:09,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-21 16:39:09,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:39:09,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 16:39:09,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:39:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-08-21 16:39:09,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468990963] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:39:09,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-21 16:39:09,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-08-21 16:39:09,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704663613] [2021-08-21 16:39:09,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 16:39:09,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:39:09,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 16:39:09,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-08-21 16:39:09,512 INFO L87 Difference]: Start difference. First operand 12163 states and 14847 transitions. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 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 16:39:09,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:39:09,635 INFO L93 Difference]: Finished difference Result 14526 states and 17735 transitions. [2021-08-21 16:39:09,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 16:39:09,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 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 195 [2021-08-21 16:39:09,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:39:09,654 INFO L225 Difference]: With dead ends: 14526 [2021-08-21 16:39:09,655 INFO L226 Difference]: Without dead ends: 14526 [2021-08-21 16:39:09,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-08-21 16:39:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14526 states. [2021-08-21 16:39:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14526 to 12623. [2021-08-21 16:39:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12623 states, 12578 states have (on average 1.2300047702337416) internal successors, (15471), 12622 states have internal predecessors, (15471), 0 states have call successors, (0), 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 16:39:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12623 states to 12623 states and 15471 transitions. [2021-08-21 16:39:09,814 INFO L78 Accepts]: Start accepts. Automaton has 12623 states and 15471 transitions. Word has length 195 [2021-08-21 16:39:09,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:39:09,814 INFO L470 AbstractCegarLoop]: Abstraction has 12623 states and 15471 transitions. [2021-08-21 16:39:09,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 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 16:39:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 12623 states and 15471 transitions. [2021-08-21 16:39:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-08-21 16:39:09,825 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:39:09,826 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:39:09,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-21 16:39:10,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-21 16:39:10,027 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:39:10,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:39:10,029 INFO L82 PathProgramCache]: Analyzing trace with hash -93932911, now seen corresponding path program 3 times [2021-08-21 16:39:10,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:39:10,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535185580] [2021-08-21 16:39:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:39:10,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:39:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:39:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:39:11,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:39:11,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535185580] [2021-08-21 16:39:11,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535185580] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:39:11,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314166143] [2021-08-21 16:39:11,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 16:39:11,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:39:11,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:39:11,234 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:39:11,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-21 16:39:12,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-21 16:39:12,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:39:12,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 67 conjunts are in the unsatisfiable core [2021-08-21 16:39:12,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:39:13,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-21 16:39:14,342 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-21 16:39:14,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-21 16:39:15,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-08-21 16:39:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 65 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-21 16:39:16,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314166143] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:39:16,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:39:16,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 29] total 59 [2021-08-21 16:39:16,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472751177] [2021-08-21 16:39:16,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-08-21 16:39:16,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:39:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-08-21 16:39:16,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3252, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 16:39:16,043 INFO L87 Difference]: Start difference. First operand 12623 states and 15471 transitions. Second operand has 59 states, 59 states have (on average 6.47457627118644) internal successors, (382), 59 states have internal predecessors, (382), 0 states have call successors, (0), 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 16:40:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:40:21,918 INFO L93 Difference]: Finished difference Result 39650 states and 48624 transitions. [2021-08-21 16:40:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 302 states. [2021-08-21 16:40:21,919 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.47457627118644) internal successors, (382), 59 states have internal predecessors, (382), 0 states have call successors, (0), 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 199 [2021-08-21 16:40:21,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:40:21,979 INFO L225 Difference]: With dead ends: 39650 [2021-08-21 16:40:21,980 INFO L226 Difference]: Without dead ends: 39650 [2021-08-21 16:40:21,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 329 SyntacticMatches, 3 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49322 ImplicationChecksByTransitivity, 61372.7ms TimeCoverageRelationStatistics Valid=11811, Invalid=115281, Unknown=0, NotChecked=0, Total=127092 [2021-08-21 16:40:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39650 states. [2021-08-21 16:40:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39650 to 17814. [2021-08-21 16:40:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17814 states, 17769 states have (on average 1.2448083741347291) internal successors, (22119), 17813 states have internal predecessors, (22119), 0 states have call successors, (0), 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 16:40:22,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17814 states to 17814 states and 22119 transitions. [2021-08-21 16:40:22,313 INFO L78 Accepts]: Start accepts. Automaton has 17814 states and 22119 transitions. Word has length 199 [2021-08-21 16:40:22,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:40:22,314 INFO L470 AbstractCegarLoop]: Abstraction has 17814 states and 22119 transitions. [2021-08-21 16:40:22,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.47457627118644) internal successors, (382), 59 states have internal predecessors, (382), 0 states have call successors, (0), 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 16:40:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 17814 states and 22119 transitions. [2021-08-21 16:40:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-08-21 16:40:22,330 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:40:22,330 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:40:22,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-21 16:40:22,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-21 16:40:22,530 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:40:22,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:40:22,531 INFO L82 PathProgramCache]: Analyzing trace with hash 411652079, now seen corresponding path program 4 times [2021-08-21 16:40:22,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:40:22,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965968857] [2021-08-21 16:40:22,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:40:22,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:40:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:40:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:40:23,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:40:23,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965968857] [2021-08-21 16:40:23,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965968857] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:40:23,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525873858] [2021-08-21 16:40:23,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 16:40:23,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:40:23,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:40:23,919 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:40:23,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-21 16:40:25,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 16:40:25,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:40:25,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 81 conjunts are in the unsatisfiable core [2021-08-21 16:40:25,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:40:27,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-21 16:40:27,278 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-08-21 16:40:27,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 41 [2021-08-21 16:40:28,243 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:40:28,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2021-08-21 16:40:29,660 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:40:29,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 21 [2021-08-21 16:40:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:40:29,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525873858] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:40:29,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:40:29,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 63 [2021-08-21 16:40:29,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193178066] [2021-08-21 16:40:29,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-08-21 16:40:29,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:40:29,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-08-21 16:40:29,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3721, Unknown=0, NotChecked=0, Total=3906 [2021-08-21 16:40:29,891 INFO L87 Difference]: Start difference. First operand 17814 states and 22119 transitions. Second operand has 63 states, 63 states have (on average 5.063492063492063) internal successors, (319), 63 states have internal predecessors, (319), 0 states have call successors, (0), 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 16:40:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:40:34,960 INFO L93 Difference]: Finished difference Result 25696 states and 31836 transitions. [2021-08-21 16:40:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 16:40:34,961 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.063492063492063) internal successors, (319), 63 states have internal predecessors, (319), 0 states have call successors, (0), 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 199 [2021-08-21 16:40:34,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:40:34,996 INFO L225 Difference]: With dead ends: 25696 [2021-08-21 16:40:34,996 INFO L226 Difference]: Without dead ends: 25696 [2021-08-21 16:40:34,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 169 SyntacticMatches, 8 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3063 ImplicationChecksByTransitivity, 4869.7ms TimeCoverageRelationStatistics Valid=702, Invalid=9600, Unknown=0, NotChecked=0, Total=10302 [2021-08-21 16:40:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25696 states. [2021-08-21 16:40:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25696 to 18224. [2021-08-21 16:40:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18224 states, 18179 states have (on average 1.245228010341603) internal successors, (22637), 18223 states have internal predecessors, (22637), 0 states have call successors, (0), 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 16:40:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18224 states to 18224 states and 22637 transitions. [2021-08-21 16:40:35,285 INFO L78 Accepts]: Start accepts. Automaton has 18224 states and 22637 transitions. Word has length 199 [2021-08-21 16:40:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:40:35,286 INFO L470 AbstractCegarLoop]: Abstraction has 18224 states and 22637 transitions. [2021-08-21 16:40:35,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.063492063492063) internal successors, (319), 63 states have internal predecessors, (319), 0 states have call successors, (0), 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 16:40:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 18224 states and 22637 transitions. [2021-08-21 16:40:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-08-21 16:40:35,304 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:40:35,305 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:40:35,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-21 16:40:35,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-21 16:40:35,508 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:40:35,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:40:35,508 INFO L82 PathProgramCache]: Analyzing trace with hash 134915277, now seen corresponding path program 5 times [2021-08-21 16:40:35,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:40:35,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952001740] [2021-08-21 16:40:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:40:35,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:40:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:40:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:40:36,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:40:36,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952001740] [2021-08-21 16:40:36,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952001740] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:40:36,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201505786] [2021-08-21 16:40:36,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 16:40:36,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:40:36,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:40:36,980 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:40:36,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-21 16:40:38,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-08-21 16:40:38,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:40:39,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 77 conjunts are in the unsatisfiable core [2021-08-21 16:40:39,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:40:40,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-21 16:40:41,946 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:40:41,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 46 [2021-08-21 16:40:41,985 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:40:41,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-08-21 16:40:43,396 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:40:43,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:40:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:40:43,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201505786] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:40:43,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:40:43,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 35] total 69 [2021-08-21 16:40:43,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257136775] [2021-08-21 16:40:43,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-08-21 16:40:43,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:40:43,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-08-21 16:40:43,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=4481, Unknown=0, NotChecked=0, Total=4692 [2021-08-21 16:40:43,646 INFO L87 Difference]: Start difference. First operand 18224 states and 22637 transitions. Second operand has 69 states, 69 states have (on average 5.101449275362318) internal successors, (352), 69 states have internal predecessors, (352), 0 states have call successors, (0), 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 16:40:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:40:54,161 INFO L93 Difference]: Finished difference Result 28718 states and 35593 transitions. [2021-08-21 16:40:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-08-21 16:40:54,161 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 5.101449275362318) internal successors, (352), 69 states have internal predecessors, (352), 0 states have call successors, (0), 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 199 [2021-08-21 16:40:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:40:54,203 INFO L225 Difference]: With dead ends: 28718 [2021-08-21 16:40:54,204 INFO L226 Difference]: Without dead ends: 28718 [2021-08-21 16:40:54,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6050 ImplicationChecksByTransitivity, 9590.3ms TimeCoverageRelationStatistics Valid=1533, Invalid=18489, Unknown=0, NotChecked=0, Total=20022 [2021-08-21 16:40:54,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28718 states. [2021-08-21 16:40:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28718 to 20356. [2021-08-21 16:40:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20356 states, 20311 states have (on average 1.247156713111122) internal successors, (25331), 20355 states have internal predecessors, (25331), 0 states have call successors, (0), 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 16:40:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20356 states to 20356 states and 25331 transitions. [2021-08-21 16:40:54,481 INFO L78 Accepts]: Start accepts. Automaton has 20356 states and 25331 transitions. Word has length 199 [2021-08-21 16:40:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:40:54,482 INFO L470 AbstractCegarLoop]: Abstraction has 20356 states and 25331 transitions. [2021-08-21 16:40:54,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 5.101449275362318) internal successors, (352), 69 states have internal predecessors, (352), 0 states have call successors, (0), 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 16:40:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 20356 states and 25331 transitions. [2021-08-21 16:40:54,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-08-21 16:40:54,509 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:40:54,509 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:40:54,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-21 16:40:54,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:40:54,725 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:40:54,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:40:54,725 INFO L82 PathProgramCache]: Analyzing trace with hash -743331966, now seen corresponding path program 5 times [2021-08-21 16:40:54,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:40:54,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742380262] [2021-08-21 16:40:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:40:54,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:40:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:40:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 297 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:40:54,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:40:54,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742380262] [2021-08-21 16:40:54,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742380262] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:40:54,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984773354] [2021-08-21 16:40:54,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 16:40:54,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:40:54,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:40:54,901 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:40:54,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-21 16:40:57,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-21 16:40:57,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:40:57,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 16:40:57,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:40:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:40:57,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984773354] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:40:57,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-21 16:40:57,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-08-21 16:40:57,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488157401] [2021-08-21 16:40:57,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 16:40:57,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:40:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 16:40:57,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-08-21 16:40:57,937 INFO L87 Difference]: Start difference. First operand 20356 states and 25331 transitions. Second operand has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 0 states have call successors, (0), 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 16:40:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:40:58,168 INFO L93 Difference]: Finished difference Result 43569 states and 53962 transitions. [2021-08-21 16:40:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 16:40:58,169 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 0 states have call successors, (0), 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 228 [2021-08-21 16:40:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:40:58,222 INFO L225 Difference]: With dead ends: 43569 [2021-08-21 16:40:58,223 INFO L226 Difference]: Without dead ends: 35939 [2021-08-21 16:40:58,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 144.6ms TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2021-08-21 16:40:58,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35939 states. [2021-08-21 16:40:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35939 to 25924. [2021-08-21 16:40:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25924 states, 25884 states have (on average 1.2431617987946222) internal successors, (32178), 25923 states have internal predecessors, (32178), 0 states have call successors, (0), 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 16:40:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25924 states to 25924 states and 32178 transitions. [2021-08-21 16:40:58,597 INFO L78 Accepts]: Start accepts. Automaton has 25924 states and 32178 transitions. Word has length 228 [2021-08-21 16:40:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:40:58,597 INFO L470 AbstractCegarLoop]: Abstraction has 25924 states and 32178 transitions. [2021-08-21 16:40:58,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.53846153846154) internal successors, (228), 13 states have internal predecessors, (228), 0 states have call successors, (0), 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 16:40:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 25924 states and 32178 transitions. [2021-08-21 16:40:58,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-08-21 16:40:58,620 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:40:58,620 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:40:58,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-08-21 16:40:58,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:40:58,821 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:40:58,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:40:58,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1999562961, now seen corresponding path program 6 times [2021-08-21 16:40:58,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:40:58,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637732935] [2021-08-21 16:40:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:40:58,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:40:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:41:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:41:00,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:41:00,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637732935] [2021-08-21 16:41:00,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637732935] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:41:00,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419446464] [2021-08-21 16:41:00,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 16:41:00,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:41:00,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:41:00,457 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:41:00,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-21 16:41:02,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-08-21 16:41:02,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:41:02,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 96 conjunts are in the unsatisfiable core [2021-08-21 16:41:02,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:41:02,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:41:03,035 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:41:03,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:41:03,251 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-21 16:41:03,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-08-21 16:41:03,328 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-21 16:41:03,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-08-21 16:41:03,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-21 16:41:04,074 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:41:04,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-21 16:41:04,896 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:41:04,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:41:05,779 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:41:05,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:41:07,305 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:41:07,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:41:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:41:07,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419446464] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:41:07,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:41:07,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 41] total 58 [2021-08-21 16:41:07,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267890547] [2021-08-21 16:41:07,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-08-21 16:41:07,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:41:07,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-08-21 16:41:07,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=3120, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 16:41:07,524 INFO L87 Difference]: Start difference. First operand 25924 states and 32178 transitions. Second operand has 58 states, 58 states have (on average 4.827586206896552) internal successors, (280), 58 states have internal predecessors, (280), 0 states have call successors, (0), 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 16:41:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:41:12,737 INFO L93 Difference]: Finished difference Result 40743 states and 50379 transitions. [2021-08-21 16:41:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-21 16:41:12,738 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.827586206896552) internal successors, (280), 58 states have internal predecessors, (280), 0 states have call successors, (0), 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 228 [2021-08-21 16:41:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:41:12,784 INFO L225 Difference]: With dead ends: 40743 [2021-08-21 16:41:12,785 INFO L226 Difference]: Without dead ends: 36356 [2021-08-21 16:41:12,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 207 SyntacticMatches, 11 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3793 ImplicationChecksByTransitivity, 4885.9ms TimeCoverageRelationStatistics Valid=848, Invalid=11142, Unknown=0, NotChecked=0, Total=11990 [2021-08-21 16:41:12,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36356 states. [2021-08-21 16:41:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36356 to 27950. [2021-08-21 16:41:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27950 states, 27910 states have (on average 1.2413830168398423) internal successors, (34647), 27949 states have internal predecessors, (34647), 0 states have call successors, (0), 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 16:41:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27950 states to 27950 states and 34647 transitions. [2021-08-21 16:41:13,148 INFO L78 Accepts]: Start accepts. Automaton has 27950 states and 34647 transitions. Word has length 228 [2021-08-21 16:41:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:41:13,148 INFO L470 AbstractCegarLoop]: Abstraction has 27950 states and 34647 transitions. [2021-08-21 16:41:13,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.827586206896552) internal successors, (280), 58 states have internal predecessors, (280), 0 states have call successors, (0), 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 16:41:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 27950 states and 34647 transitions. [2021-08-21 16:41:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-08-21 16:41:13,169 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:41:13,170 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:41:13,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-21 16:41:13,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:41:13,370 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:41:13,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:41:13,371 INFO L82 PathProgramCache]: Analyzing trace with hash 402814183, now seen corresponding path program 7 times [2021-08-21 16:41:13,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:41:13,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658778247] [2021-08-21 16:41:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:41:13,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:41:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:41:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-21 16:41:15,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:41:15,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658778247] [2021-08-21 16:41:15,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658778247] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:41:15,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958553421] [2021-08-21 16:41:15,032 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 16:41:15,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:41:15,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:41:15,033 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:41:15,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-21 16:41:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:41:17,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 115 conjunts are in the unsatisfiable core [2021-08-21 16:41:17,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:41:17,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:41:18,022 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:41:18,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:41:18,249 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-08-21 16:41:18,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-08-21 16:41:18,391 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-08-21 16:41:18,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-08-21 16:41:19,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2021-08-21 16:41:20,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-21 16:41:20,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2021-08-21 16:41:20,748 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:41:20,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 36 [2021-08-21 16:41:22,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-21 16:41:22,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2021-08-21 16:41:24,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2021-08-21 16:41:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 8 proven. 162 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-21 16:41:24,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958553421] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:41:24,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:41:24,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 45] total 83 [2021-08-21 16:41:24,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454960868] [2021-08-21 16:41:24,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-08-21 16:41:24,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:41:24,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-08-21 16:41:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=6438, Unknown=0, NotChecked=0, Total=6806 [2021-08-21 16:41:24,726 INFO L87 Difference]: Start difference. First operand 27950 states and 34647 transitions. Second operand has 83 states, 83 states have (on average 4.783132530120482) internal successors, (397), 83 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:41:37,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:41:37,286 INFO L93 Difference]: Finished difference Result 40838 states and 50332 transitions. [2021-08-21 16:41:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-08-21 16:41:37,288 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 4.783132530120482) internal successors, (397), 83 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2021-08-21 16:41:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:41:37,336 INFO L225 Difference]: With dead ends: 40838 [2021-08-21 16:41:37,337 INFO L226 Difference]: Without dead ends: 36978 [2021-08-21 16:41:37,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 194 SyntacticMatches, 3 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9017 ImplicationChecksByTransitivity, 12394.9ms TimeCoverageRelationStatistics Valid=2183, Invalid=24223, Unknown=0, NotChecked=0, Total=26406 [2021-08-21 16:41:37,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36978 states. [2021-08-21 16:41:37,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36978 to 26670. [2021-08-21 16:41:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26670 states, 26630 states have (on average 1.2409688321441983) internal successors, (33047), 26669 states have internal predecessors, (33047), 0 states have call successors, (0), 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 16:41:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26670 states to 26670 states and 33047 transitions. [2021-08-21 16:41:37,682 INFO L78 Accepts]: Start accepts. Automaton has 26670 states and 33047 transitions. Word has length 228 [2021-08-21 16:41:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:41:37,683 INFO L470 AbstractCegarLoop]: Abstraction has 26670 states and 33047 transitions. [2021-08-21 16:41:37,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 4.783132530120482) internal successors, (397), 83 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:41:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 26670 states and 33047 transitions. [2021-08-21 16:41:37,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-08-21 16:41:37,704 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:41:37,704 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:41:37,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-21 16:41:37,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:41:37,905 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:41:37,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:41:37,905 INFO L82 PathProgramCache]: Analyzing trace with hash 150237235, now seen corresponding path program 8 times [2021-08-21 16:41:37,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:41:37,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564329501] [2021-08-21 16:41:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:41:37,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:41:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:41:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:41:39,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:41:39,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564329501] [2021-08-21 16:41:39,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564329501] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:41:39,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874298068] [2021-08-21 16:41:39,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 16:41:39,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:41:39,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:41:39,618 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:41:39,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-21 16:41:42,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 16:41:42,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:41:42,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 100 conjunts are in the unsatisfiable core [2021-08-21 16:41:42,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:41:42,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:41:43,050 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:41:43,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:41:43,275 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-21 16:41:43,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-08-21 16:41:43,370 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-21 16:41:43,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-08-21 16:41:44,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-21 16:41:44,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-21 16:41:44,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-21 16:41:44,896 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:41:44,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-21 16:41:45,741 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:41:45,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:41:47,259 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:41:47,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:41:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:41:47,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874298068] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:41:47,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:41:47,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 41] total 57 [2021-08-21 16:41:47,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945972843] [2021-08-21 16:41:47,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-08-21 16:41:47,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:41:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-08-21 16:41:47,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2990, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 16:41:47,482 INFO L87 Difference]: Start difference. First operand 26670 states and 33047 transitions. Second operand has 57 states, 57 states have (on average 4.807017543859649) internal successors, (274), 57 states have internal predecessors, (274), 0 states have call successors, (0), 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 16:41:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:41:56,238 INFO L93 Difference]: Finished difference Result 40797 states and 50232 transitions. [2021-08-21 16:41:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-08-21 16:41:56,239 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.807017543859649) internal successors, (274), 57 states have internal predecessors, (274), 0 states have call successors, (0), 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 228 [2021-08-21 16:41:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:41:56,292 INFO L225 Difference]: With dead ends: 40797 [2021-08-21 16:41:56,292 INFO L226 Difference]: Without dead ends: 37494 [2021-08-21 16:41:56,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 211 SyntacticMatches, 9 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6500 ImplicationChecksByTransitivity, 7534.5ms TimeCoverageRelationStatistics Valid=1434, Invalid=17748, Unknown=0, NotChecked=0, Total=19182 [2021-08-21 16:41:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37494 states. [2021-08-21 16:41:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37494 to 28546. [2021-08-21 16:41:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28546 states, 28506 states have (on average 1.2384059496246405) internal successors, (35302), 28545 states have internal predecessors, (35302), 0 states have call successors, (0), 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 16:41:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28546 states to 28546 states and 35302 transitions. [2021-08-21 16:41:56,681 INFO L78 Accepts]: Start accepts. Automaton has 28546 states and 35302 transitions. Word has length 228 [2021-08-21 16:41:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:41:56,681 INFO L470 AbstractCegarLoop]: Abstraction has 28546 states and 35302 transitions. [2021-08-21 16:41:56,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.807017543859649) internal successors, (274), 57 states have internal predecessors, (274), 0 states have call successors, (0), 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 16:41:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 28546 states and 35302 transitions. [2021-08-21 16:41:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-08-21 16:41:56,705 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:41:56,705 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:41:56,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-08-21 16:41:56,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:41:56,906 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:41:56,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:41:56,906 INFO L82 PathProgramCache]: Analyzing trace with hash 857763861, now seen corresponding path program 9 times [2021-08-21 16:41:56,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:41:56,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786418102] [2021-08-21 16:41:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:41:56,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:41:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:41:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:41:58,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:41:58,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786418102] [2021-08-21 16:41:58,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786418102] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:41:58,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426527809] [2021-08-21 16:41:58,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 16:41:58,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:41:58,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:41:58,958 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:41:58,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-21 16:42:02,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-21 16:42:02,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:42:02,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 99 conjunts are in the unsatisfiable core [2021-08-21 16:42:02,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:42:02,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:42:02,872 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:42:02,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:42:03,060 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-21 16:42:03,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-08-21 16:42:03,132 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-21 16:42:03,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-08-21 16:42:04,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-21 16:42:05,169 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:42:05,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-08-21 16:42:06,209 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:42:06,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-08-21 16:42:06,241 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:42:06,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 38 [2021-08-21 16:42:08,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2021-08-21 16:42:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:42:08,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426527809] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:42:08,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:42:08,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 43] total 87 [2021-08-21 16:42:08,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982131912] [2021-08-21 16:42:08,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-08-21 16:42:08,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:42:08,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-08-21 16:42:08,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=7147, Unknown=0, NotChecked=0, Total=7482 [2021-08-21 16:42:08,481 INFO L87 Difference]: Start difference. First operand 28546 states and 35302 transitions. Second operand has 87 states, 87 states have (on average 5.103448275862069) internal successors, (444), 87 states have internal predecessors, (444), 0 states have call successors, (0), 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 16:42:21,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:42:21,056 INFO L93 Difference]: Finished difference Result 44285 states and 54064 transitions. [2021-08-21 16:42:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-08-21 16:42:21,057 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.103448275862069) internal successors, (444), 87 states have internal predecessors, (444), 0 states have call successors, (0), 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 228 [2021-08-21 16:42:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:42:21,100 INFO L225 Difference]: With dead ends: 44285 [2021-08-21 16:42:21,100 INFO L226 Difference]: Without dead ends: 25782 [2021-08-21 16:42:21,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 190 SyntacticMatches, 2 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10445 ImplicationChecksByTransitivity, 11569.1ms TimeCoverageRelationStatistics Valid=2064, Invalid=30156, Unknown=0, NotChecked=0, Total=32220 [2021-08-21 16:42:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25782 states. [2021-08-21 16:42:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25782 to 18250. [2021-08-21 16:42:21,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18250 states, 18210 states have (on average 1.2201537616694125) internal successors, (22219), 18249 states have internal predecessors, (22219), 0 states have call successors, (0), 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 16:42:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18250 states to 18250 states and 22219 transitions. [2021-08-21 16:42:21,334 INFO L78 Accepts]: Start accepts. Automaton has 18250 states and 22219 transitions. Word has length 228 [2021-08-21 16:42:21,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:42:21,335 INFO L470 AbstractCegarLoop]: Abstraction has 18250 states and 22219 transitions. [2021-08-21 16:42:21,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.103448275862069) internal successors, (444), 87 states have internal predecessors, (444), 0 states have call successors, (0), 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 16:42:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 18250 states and 22219 transitions. [2021-08-21 16:42:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-08-21 16:42:21,350 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:42:21,350 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:42:21,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-21 16:42:21,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:42:21,551 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:42:21,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:42:21,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1409099408, now seen corresponding path program 4 times [2021-08-21 16:42:21,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:42:21,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924117435] [2021-08-21 16:42:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:42:21,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:42:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:42:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 231 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-08-21 16:42:21,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:42:21,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924117435] [2021-08-21 16:42:21,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924117435] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:42:21,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86586278] [2021-08-21 16:42:21,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 16:42:21,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:42:21,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:42:21,685 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:42:21,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-21 16:42:26,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 16:42:26,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:42:26,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-21 16:42:26,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:42:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 231 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-08-21 16:42:26,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86586278] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:42:26,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:42:26,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-08-21 16:42:26,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84043177] [2021-08-21 16:42:26,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 16:42:26,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:42:26,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 16:42:26,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-21 16:42:26,628 INFO L87 Difference]: Start difference. First operand 18250 states and 22219 transitions. Second operand has 12 states, 12 states have (on average 20.916666666666668) internal successors, (251), 12 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:42:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:42:26,812 INFO L93 Difference]: Finished difference Result 26645 states and 32453 transitions. [2021-08-21 16:42:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 16:42:26,813 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.916666666666668) internal successors, (251), 12 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-08-21 16:42:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:42:26,845 INFO L225 Difference]: With dead ends: 26645 [2021-08-21 16:42:26,846 INFO L226 Difference]: Without dead ends: 26645 [2021-08-21 16:42:26,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-08-21 16:42:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2021-08-21 16:42:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 19238. [2021-08-21 16:42:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19238 states, 19198 states have (on average 1.2252838837378894) internal successors, (23523), 19237 states have internal predecessors, (23523), 0 states have call successors, (0), 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 16:42:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19238 states to 19238 states and 23523 transitions. [2021-08-21 16:42:27,093 INFO L78 Accepts]: Start accepts. Automaton has 19238 states and 23523 transitions. Word has length 229 [2021-08-21 16:42:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:42:27,093 INFO L470 AbstractCegarLoop]: Abstraction has 19238 states and 23523 transitions. [2021-08-21 16:42:27,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.916666666666668) internal successors, (251), 12 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:42:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 19238 states and 23523 transitions. [2021-08-21 16:42:27,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-08-21 16:42:27,110 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:42:27,110 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:42:27,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-21 16:42:27,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-08-21 16:42:27,313 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:42:27,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:42:27,313 INFO L82 PathProgramCache]: Analyzing trace with hash -648704882, now seen corresponding path program 10 times [2021-08-21 16:42:27,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:42:27,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377464954] [2021-08-21 16:42:27,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:42:27,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:42:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:42:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:42:28,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:42:28,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377464954] [2021-08-21 16:42:28,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377464954] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:42:28,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245136884] [2021-08-21 16:42:28,706 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 16:42:28,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:42:28,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:42:28,707 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:42:28,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-21 16:42:32,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 16:42:32,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:42:32,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 85 conjunts are in the unsatisfiable core [2021-08-21 16:42:32,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:42:33,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:42:33,068 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:42:33,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:42:33,213 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-08-21 16:42:33,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-08-21 16:42:33,307 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-08-21 16:42:33,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-08-21 16:42:34,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-21 16:42:34,444 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-08-21 16:42:34,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 42 [2021-08-21 16:42:35,318 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-08-21 16:42:35,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-08-21 16:42:36,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-08-21 16:42:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 31 proven. 145 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-08-21 16:42:37,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245136884] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:42:37,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:42:37,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 36] total 74 [2021-08-21 16:42:37,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173350091] [2021-08-21 16:42:37,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-08-21 16:42:37,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:42:37,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-08-21 16:42:37,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=5190, Unknown=0, NotChecked=0, Total=5402 [2021-08-21 16:42:37,061 INFO L87 Difference]: Start difference. First operand 19238 states and 23523 transitions. Second operand has 74 states, 74 states have (on average 5.675675675675675) internal successors, (420), 74 states have internal predecessors, (420), 0 states have call successors, (0), 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 16:44:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:44:14,556 INFO L93 Difference]: Finished difference Result 30596 states and 37400 transitions. [2021-08-21 16:44:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2021-08-21 16:44:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 5.675675675675675) internal successors, (420), 74 states have internal predecessors, (420), 0 states have call successors, (0), 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 233 [2021-08-21 16:44:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:44:14,595 INFO L225 Difference]: With dead ends: 30596 [2021-08-21 16:44:14,595 INFO L226 Difference]: Without dead ends: 30596 [2021-08-21 16:44:14,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40506 ImplicationChecksByTransitivity, 90164.8ms TimeCoverageRelationStatistics Valid=11076, Invalid=98154, Unknown=0, NotChecked=0, Total=109230 [2021-08-21 16:44:14,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30596 states. [2021-08-21 16:44:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30596 to 18868. [2021-08-21 16:44:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18868 states, 18828 states have (on average 1.221478648820905) internal successors, (22998), 18867 states have internal predecessors, (22998), 0 states have call successors, (0), 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 16:44:14,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18868 states to 18868 states and 22998 transitions. [2021-08-21 16:44:14,816 INFO L78 Accepts]: Start accepts. Automaton has 18868 states and 22998 transitions. Word has length 233 [2021-08-21 16:44:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:44:14,817 INFO L470 AbstractCegarLoop]: Abstraction has 18868 states and 22998 transitions. [2021-08-21 16:44:14,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 5.675675675675675) internal successors, (420), 74 states have internal predecessors, (420), 0 states have call successors, (0), 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 16:44:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 18868 states and 22998 transitions. [2021-08-21 16:44:14,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-08-21 16:44:14,835 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:44:14,835 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:44:14,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-08-21 16:44:15,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-21 16:44:15,036 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:44:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:44:15,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1138712360, now seen corresponding path program 1 times [2021-08-21 16:44:15,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:44:15,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885109138] [2021-08-21 16:44:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:44:15,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:44:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:44:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 55 proven. 230 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-21 16:44:15,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:44:15,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885109138] [2021-08-21 16:44:15,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885109138] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:44:15,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471788941] [2021-08-21 16:44:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:44:15,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:44:15,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:44:15,197 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:44:15,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-21 16:44:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:44:19,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-21 16:44:19,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:44:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 55 proven. 230 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-21 16:44:20,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471788941] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:44:20,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:44:20,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-08-21 16:44:20,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244094494] [2021-08-21 16:44:20,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-21 16:44:20,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:44:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-21 16:44:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-21 16:44:20,385 INFO L87 Difference]: Start difference. First operand 18868 states and 22998 transitions. Second operand has 15 states, 15 states have (on average 19.866666666666667) internal successors, (298), 15 states have internal predecessors, (298), 0 states have call successors, (0), 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 16:44:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:44:20,629 INFO L93 Difference]: Finished difference Result 27514 states and 33494 transitions. [2021-08-21 16:44:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 16:44:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 19.866666666666667) internal successors, (298), 15 states have internal predecessors, (298), 0 states have call successors, (0), 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 258 [2021-08-21 16:44:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:44:20,666 INFO L225 Difference]: With dead ends: 27514 [2021-08-21 16:44:20,667 INFO L226 Difference]: Without dead ends: 27514 [2021-08-21 16:44:20,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 170.4ms TimeCoverageRelationStatistics Valid=221, Invalid=649, Unknown=0, NotChecked=0, Total=870 [2021-08-21 16:44:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27514 states. [2021-08-21 16:44:20,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27514 to 16932. [2021-08-21 16:44:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16932 states, 16900 states have (on average 1.215680473372781) internal successors, (20545), 16931 states have internal predecessors, (20545), 0 states have call successors, (0), 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 16:44:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16932 states to 16932 states and 20545 transitions. [2021-08-21 16:44:20,959 INFO L78 Accepts]: Start accepts. Automaton has 16932 states and 20545 transitions. Word has length 258 [2021-08-21 16:44:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:44:20,960 INFO L470 AbstractCegarLoop]: Abstraction has 16932 states and 20545 transitions. [2021-08-21 16:44:20,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.866666666666667) internal successors, (298), 15 states have internal predecessors, (298), 0 states have call successors, (0), 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 16:44:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 16932 states and 20545 transitions. [2021-08-21 16:44:20,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-08-21 16:44:20,976 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:44:20,976 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:44:21,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-21 16:44:21,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-21 16:44:21,177 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:44:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:44:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash -792881744, now seen corresponding path program 11 times [2021-08-21 16:44:21,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:44:21,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650728205] [2021-08-21 16:44:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:44:21,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:44:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:44:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:44:22,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:44:22,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650728205] [2021-08-21 16:44:22,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650728205] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:44:22,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268316509] [2021-08-21 16:44:22,757 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 16:44:22,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:44:22,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:44:22,758 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:44:22,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-21 16:44:27,324 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 16:44:27,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:44:27,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 92 conjunts are in the unsatisfiable core [2021-08-21 16:44:27,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:44:28,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-21 16:44:29,262 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:44:29,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2021-08-21 16:44:30,208 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:44:30,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2021-08-21 16:44:32,014 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:44:32,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 21 [2021-08-21 16:44:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:44:32,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268316509] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:44:32,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:44:32,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 58 [2021-08-21 16:44:32,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041512981] [2021-08-21 16:44:32,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-08-21 16:44:32,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:44:32,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-08-21 16:44:32,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=3137, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 16:44:32,252 INFO L87 Difference]: Start difference. First operand 16932 states and 20545 transitions. Second operand has 58 states, 58 states have (on average 5.310344827586207) internal successors, (308), 58 states have internal predecessors, (308), 0 states have call successors, (0), 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 16:44:41,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:44:41,076 INFO L93 Difference]: Finished difference Result 26303 states and 32137 transitions. [2021-08-21 16:44:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-08-21 16:44:41,076 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.310344827586207) internal successors, (308), 58 states have internal predecessors, (308), 0 states have call successors, (0), 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 262 [2021-08-21 16:44:41,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:44:41,108 INFO L225 Difference]: With dead ends: 26303 [2021-08-21 16:44:41,108 INFO L226 Difference]: Without dead ends: 26303 [2021-08-21 16:44:41,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 237 SyntacticMatches, 12 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5609 ImplicationChecksByTransitivity, 7510.6ms TimeCoverageRelationStatistics Valid=1289, Invalid=16533, Unknown=0, NotChecked=0, Total=17822 [2021-08-21 16:44:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26303 states. [2021-08-21 16:44:41,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26303 to 18825. [2021-08-21 16:44:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18825 states, 18793 states have (on average 1.2179534933219816) internal successors, (22889), 18824 states have internal predecessors, (22889), 0 states have call successors, (0), 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 16:44:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18825 states to 18825 states and 22889 transitions. [2021-08-21 16:44:41,323 INFO L78 Accepts]: Start accepts. Automaton has 18825 states and 22889 transitions. Word has length 262 [2021-08-21 16:44:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:44:41,323 INFO L470 AbstractCegarLoop]: Abstraction has 18825 states and 22889 transitions. [2021-08-21 16:44:41,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.310344827586207) internal successors, (308), 58 states have internal predecessors, (308), 0 states have call successors, (0), 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 16:44:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 18825 states and 22889 transitions. [2021-08-21 16:44:41,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-08-21 16:44:41,341 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:44:41,341 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:44:41,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-21 16:44:41,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:44:41,542 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:44:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:44:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1566229650, now seen corresponding path program 12 times [2021-08-21 16:44:41,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:44:41,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236831206] [2021-08-21 16:44:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:44:41,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:44:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:44:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:44:43,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:44:43,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236831206] [2021-08-21 16:44:43,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236831206] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:44:43,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292355522] [2021-08-21 16:44:43,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 16:44:43,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:44:43,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:44:43,241 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:44:43,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-21 16:44:48,375 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 16:44:48,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:44:48,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 104 conjunts are in the unsatisfiable core [2021-08-21 16:44:48,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:44:48,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:44:48,499 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:44:48,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:44:48,712 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-21 16:44:48,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-08-21 16:44:48,791 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-21 16:44:48,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-08-21 16:44:50,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-21 16:44:50,152 INFO L354 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2021-08-21 16:44:50,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 33 [2021-08-21 16:44:51,040 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:44:51,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2021-08-21 16:44:51,927 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:44:51,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2021-08-21 16:44:53,756 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:44:53,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 21 [2021-08-21 16:44:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:44:54,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292355522] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:44:54,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:44:54,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 44] total 69 [2021-08-21 16:44:54,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153182256] [2021-08-21 16:44:54,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-08-21 16:44:54,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:44:54,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-08-21 16:44:54,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=4482, Unknown=0, NotChecked=0, Total=4692 [2021-08-21 16:44:54,003 INFO L87 Difference]: Start difference. First operand 18825 states and 22889 transitions. Second operand has 69 states, 69 states have (on average 5.463768115942029) internal successors, (377), 69 states have internal predecessors, (377), 0 states have call successors, (0), 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 16:45:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:45:00,576 INFO L93 Difference]: Finished difference Result 35504 states and 43508 transitions. [2021-08-21 16:45:00,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-08-21 16:45:00,577 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 5.463768115942029) internal successors, (377), 69 states have internal predecessors, (377), 0 states have call successors, (0), 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 262 [2021-08-21 16:45:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:45:00,629 INFO L225 Difference]: With dead ends: 35504 [2021-08-21 16:45:00,629 INFO L226 Difference]: Without dead ends: 35504 [2021-08-21 16:45:00,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 231 SyntacticMatches, 12 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4376 ImplicationChecksByTransitivity, 5767.0ms TimeCoverageRelationStatistics Valid=839, Invalid=13681, Unknown=0, NotChecked=0, Total=14520 [2021-08-21 16:45:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35504 states. [2021-08-21 16:45:00,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35504 to 18961. [2021-08-21 16:45:00,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18961 states, 18929 states have (on average 1.2174969623329284) internal successors, (23046), 18960 states have internal predecessors, (23046), 0 states have call successors, (0), 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 16:45:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18961 states to 18961 states and 23046 transitions. [2021-08-21 16:45:00,896 INFO L78 Accepts]: Start accepts. Automaton has 18961 states and 23046 transitions. Word has length 262 [2021-08-21 16:45:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:45:00,897 INFO L470 AbstractCegarLoop]: Abstraction has 18961 states and 23046 transitions. [2021-08-21 16:45:00,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 5.463768115942029) internal successors, (377), 69 states have internal predecessors, (377), 0 states have call successors, (0), 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 16:45:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 18961 states and 23046 transitions. [2021-08-21 16:45:00,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-08-21 16:45:00,915 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:45:00,915 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:45:00,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-21 16:45:01,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-21 16:45:01,116 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:45:01,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:45:01,116 INFO L82 PathProgramCache]: Analyzing trace with hash -283096076, now seen corresponding path program 13 times [2021-08-21 16:45:01,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:45:01,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354510952] [2021-08-21 16:45:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:45:01,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:45:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:45:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:45:02,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:45:02,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354510952] [2021-08-21 16:45:02,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354510952] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:45:02,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728086910] [2021-08-21 16:45:02,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 16:45:02,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:45:02,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:45:02,913 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:45:02,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-21 16:45:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:45:08,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 100 conjunts are in the unsatisfiable core [2021-08-21 16:45:08,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:45:10,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-21 16:45:11,616 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:45:11,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 46 [2021-08-21 16:45:11,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-21 16:45:11,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 36 [2021-08-21 16:45:12,562 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:45:12,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2021-08-21 16:45:14,478 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:45:14,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 21 [2021-08-21 16:45:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:45:14,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728086910] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:45:14,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:45:14,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 43] total 78 [2021-08-21 16:45:14,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732727203] [2021-08-21 16:45:14,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-08-21 16:45:14,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:45:14,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-08-21 16:45:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=5762, Unknown=0, NotChecked=0, Total=6006 [2021-08-21 16:45:14,756 INFO L87 Difference]: Start difference. First operand 18961 states and 23046 transitions. Second operand has 78 states, 78 states have (on average 5.333333333333333) internal successors, (416), 78 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:45:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:45:27,015 INFO L93 Difference]: Finished difference Result 31794 states and 38856 transitions. [2021-08-21 16:45:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-08-21 16:45:27,015 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 5.333333333333333) internal successors, (416), 78 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2021-08-21 16:45:27,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:45:27,056 INFO L225 Difference]: With dead ends: 31794 [2021-08-21 16:45:27,056 INFO L226 Difference]: Without dead ends: 31794 [2021-08-21 16:45:27,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 229 SyntacticMatches, 5 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8201 ImplicationChecksByTransitivity, 11169.0ms TimeCoverageRelationStatistics Valid=1649, Invalid=24111, Unknown=0, NotChecked=0, Total=25760 [2021-08-21 16:45:27,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31794 states. [2021-08-21 16:45:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31794 to 20201. [2021-08-21 16:45:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20201 states, 20169 states have (on average 1.2222718032624325) internal successors, (24652), 20200 states have internal predecessors, (24652), 0 states have call successors, (0), 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 16:45:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20201 states to 20201 states and 24652 transitions. [2021-08-21 16:45:27,357 INFO L78 Accepts]: Start accepts. Automaton has 20201 states and 24652 transitions. Word has length 262 [2021-08-21 16:45:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:45:27,358 INFO L470 AbstractCegarLoop]: Abstraction has 20201 states and 24652 transitions. [2021-08-21 16:45:27,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 5.333333333333333) internal successors, (416), 78 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:45:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand 20201 states and 24652 transitions. [2021-08-21 16:45:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-08-21 16:45:27,377 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:45:27,377 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:45:27,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-21 16:45:27,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:45:27,578 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:45:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:45:27,578 INFO L82 PathProgramCache]: Analyzing trace with hash 424430550, now seen corresponding path program 14 times [2021-08-21 16:45:27,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:45:27,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089204798] [2021-08-21 16:45:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:45:27,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:45:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:45:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:45:29,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:45:29,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089204798] [2021-08-21 16:45:29,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089204798] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:45:29,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134120032] [2021-08-21 16:45:29,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 16:45:29,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:45:29,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:45:29,727 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:45:29,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-21 16:45:35,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 16:45:35,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:45:35,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 100 conjunts are in the unsatisfiable core [2021-08-21 16:45:35,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:45:35,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:45:35,839 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:45:35,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:45:36,065 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-21 16:45:36,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-08-21 16:45:36,149 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-21 16:45:36,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-08-21 16:45:37,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-21 16:45:38,268 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:45:38,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2021-08-21 16:45:39,286 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:45:39,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 33 [2021-08-21 16:45:39,318 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-21 16:45:39,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 27 [2021-08-21 16:45:41,243 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:45:41,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:45:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:45:41,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134120032] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:45:41,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:45:41,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 44] total 68 [2021-08-21 16:45:41,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640483016] [2021-08-21 16:45:41,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-08-21 16:45:41,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:45:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-08-21 16:45:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=4336, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 16:45:41,523 INFO L87 Difference]: Start difference. First operand 20201 states and 24652 transitions. Second operand has 68 states, 68 states have (on average 4.911764705882353) internal successors, (334), 68 states have internal predecessors, (334), 0 states have call successors, (0), 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 16:45:52,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:45:52,435 INFO L93 Difference]: Finished difference Result 36044 states and 44245 transitions. [2021-08-21 16:45:52,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-08-21 16:45:52,436 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.911764705882353) internal successors, (334), 68 states have internal predecessors, (334), 0 states have call successors, (0), 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 262 [2021-08-21 16:45:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:45:52,484 INFO L225 Difference]: With dead ends: 36044 [2021-08-21 16:45:52,485 INFO L226 Difference]: Without dead ends: 36044 [2021-08-21 16:45:52,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 235 SyntacticMatches, 12 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7806 ImplicationChecksByTransitivity, 9121.0ms TimeCoverageRelationStatistics Valid=1546, Invalid=22634, Unknown=0, NotChecked=0, Total=24180 [2021-08-21 16:45:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36044 states. [2021-08-21 16:45:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36044 to 20721. [2021-08-21 16:45:52,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20721 states, 20689 states have (on average 1.2234520759824061) internal successors, (25312), 20720 states have internal predecessors, (25312), 0 states have call successors, (0), 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 16:45:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20721 states to 20721 states and 25312 transitions. [2021-08-21 16:45:52,786 INFO L78 Accepts]: Start accepts. Automaton has 20721 states and 25312 transitions. Word has length 262 [2021-08-21 16:45:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:45:52,787 INFO L470 AbstractCegarLoop]: Abstraction has 20721 states and 25312 transitions. [2021-08-21 16:45:52,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.911764705882353) internal successors, (334), 68 states have internal predecessors, (334), 0 states have call successors, (0), 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 16:45:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 20721 states and 25312 transitions. [2021-08-21 16:45:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-08-21 16:45:52,808 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:45:52,808 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:45:52,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-08-21 16:45:53,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-08-21 16:45:53,011 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:45:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:45:53,011 INFO L82 PathProgramCache]: Analyzing trace with hash 967814674, now seen corresponding path program 15 times [2021-08-21 16:45:53,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:45:53,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600673008] [2021-08-21 16:45:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:45:53,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:45:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:45:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:45:55,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:45:55,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600673008] [2021-08-21 16:45:55,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600673008] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:45:55,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967470005] [2021-08-21 16:45:55,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 16:45:55,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:45:55,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:45:55,061 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:45:55,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-21 16:46:01,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 16:46:01,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:46:01,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 118 conjunts are in the unsatisfiable core [2021-08-21 16:46:01,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:46:01,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:46:01,724 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:46:01,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:46:01,960 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-21 16:46:01,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-08-21 16:46:02,042 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-21 16:46:02,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-08-21 16:46:02,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-21 16:46:02,811 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:46:02,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-21 16:46:03,635 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:46:03,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:46:04,502 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:46:04,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:46:05,567 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:46:05,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:46:07,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 20 [2021-08-21 16:46:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:46:07,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967470005] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:46:07,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:46:07,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 70 [2021-08-21 16:46:07,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389999013] [2021-08-21 16:46:07,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-08-21 16:46:07,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:46:07,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-08-21 16:46:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=4602, Unknown=0, NotChecked=0, Total=4830 [2021-08-21 16:46:07,866 INFO L87 Difference]: Start difference. First operand 20721 states and 25312 transitions. Second operand has 70 states, 70 states have (on average 5.071428571428571) internal successors, (355), 70 states have internal predecessors, (355), 0 states have call successors, (0), 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 16:46:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:46:14,958 INFO L93 Difference]: Finished difference Result 32056 states and 39209 transitions. [2021-08-21 16:46:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-08-21 16:46:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.071428571428571) internal successors, (355), 70 states have internal predecessors, (355), 0 states have call successors, (0), 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 291 [2021-08-21 16:46:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:46:14,991 INFO L225 Difference]: With dead ends: 32056 [2021-08-21 16:46:14,991 INFO L226 Difference]: Without dead ends: 26021 [2021-08-21 16:46:14,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 264 SyntacticMatches, 14 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6227 ImplicationChecksByTransitivity, 6513.7ms TimeCoverageRelationStatistics Valid=1019, Invalid=17071, Unknown=0, NotChecked=0, Total=18090 [2021-08-21 16:46:15,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26021 states. [2021-08-21 16:46:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26021 to 21451. [2021-08-21 16:46:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21451 states, 21419 states have (on average 1.223213035155703) internal successors, (26200), 21450 states have internal predecessors, (26200), 0 states have call successors, (0), 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 16:46:15,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21451 states to 21451 states and 26200 transitions. [2021-08-21 16:46:15,227 INFO L78 Accepts]: Start accepts. Automaton has 21451 states and 26200 transitions. Word has length 291 [2021-08-21 16:46:15,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:46:15,227 INFO L470 AbstractCegarLoop]: Abstraction has 21451 states and 26200 transitions. [2021-08-21 16:46:15,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.071428571428571) internal successors, (355), 70 states have internal predecessors, (355), 0 states have call successors, (0), 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 16:46:15,227 INFO L276 IsEmpty]: Start isEmpty. Operand 21451 states and 26200 transitions. [2021-08-21 16:46:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-08-21 16:46:15,249 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:46:15,249 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:46:15,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-21 16:46:15,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:46:15,450 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:46:15,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:46:15,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1645084564, now seen corresponding path program 16 times [2021-08-21 16:46:15,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:46:15,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388743538] [2021-08-21 16:46:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:46:15,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:46:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:46:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 314 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-08-21 16:46:17,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:46:17,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388743538] [2021-08-21 16:46:17,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388743538] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:46:17,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355936949] [2021-08-21 16:46:17,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 16:46:17,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:46:17,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:46:17,669 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:46:17,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-21 16:46:24,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-21 16:46:24,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:46:24,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 124 conjunts are in the unsatisfiable core [2021-08-21 16:46:24,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:46:24,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:46:24,787 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:46:24,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:46:25,013 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-08-21 16:46:25,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-08-21 16:46:25,121 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-08-21 16:46:25,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-08-21 16:46:25,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-21 16:46:26,747 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:46:26,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:46:26,777 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:46:26,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-21 16:46:27,595 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:46:27,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:46:29,419 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:46:29,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:46:30,489 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:46:30,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:46:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 314 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-08-21 16:46:30,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355936949] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:46:30,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:46:30,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 68 [2021-08-21 16:46:30,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005820301] [2021-08-21 16:46:30,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-08-21 16:46:30,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:46:30,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-08-21 16:46:30,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4302, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 16:46:30,719 INFO L87 Difference]: Start difference. First operand 21451 states and 26200 transitions. Second operand has 68 states, 68 states have (on average 4.661764705882353) internal successors, (317), 68 states have internal predecessors, (317), 0 states have call successors, (0), 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 16:46:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:46:40,006 INFO L93 Difference]: Finished difference Result 32535 states and 39683 transitions. [2021-08-21 16:46:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-08-21 16:46:40,007 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.661764705882353) internal successors, (317), 68 states have internal predecessors, (317), 0 states have call successors, (0), 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 291 [2021-08-21 16:46:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:46:40,044 INFO L225 Difference]: With dead ends: 32535 [2021-08-21 16:46:40,044 INFO L226 Difference]: Without dead ends: 28239 [2021-08-21 16:46:40,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 267 SyntacticMatches, 13 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8802 ImplicationChecksByTransitivity, 8521.4ms TimeCoverageRelationStatistics Valid=1682, Invalid=22810, Unknown=0, NotChecked=0, Total=24492 [2021-08-21 16:46:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28239 states. [2021-08-21 16:46:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28239 to 19575. [2021-08-21 16:46:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19575 states, 19543 states have (on average 1.2235071381057157) internal successors, (23911), 19574 states have internal predecessors, (23911), 0 states have call successors, (0), 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 16:46:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19575 states to 19575 states and 23911 transitions. [2021-08-21 16:46:40,282 INFO L78 Accepts]: Start accepts. Automaton has 19575 states and 23911 transitions. Word has length 291 [2021-08-21 16:46:40,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:46:40,283 INFO L470 AbstractCegarLoop]: Abstraction has 19575 states and 23911 transitions. [2021-08-21 16:46:40,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.661764705882353) internal successors, (317), 68 states have internal predecessors, (317), 0 states have call successors, (0), 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 16:46:40,283 INFO L276 IsEmpty]: Start isEmpty. Operand 19575 states and 23911 transitions. [2021-08-21 16:46:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-08-21 16:46:40,302 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:46:40,302 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:46:40,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-21 16:46:40,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:46:40,503 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:46:40,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:46:40,503 INFO L82 PathProgramCache]: Analyzing trace with hash 226017904, now seen corresponding path program 17 times [2021-08-21 16:46:40,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:46:40,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823935134] [2021-08-21 16:46:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:46:40,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:46:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:46:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:46:42,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:46:42,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823935134] [2021-08-21 16:46:42,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823935134] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:46:42,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411758532] [2021-08-21 16:46:42,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-21 16:46:42,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:46:42,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:46:42,735 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:46:42,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-21 16:46:50,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-21 16:46:50,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:46:50,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 122 conjunts are in the unsatisfiable core [2021-08-21 16:46:50,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:46:50,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:46:50,455 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:46:50,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:46:50,674 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-08-21 16:46:50,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-08-21 16:46:50,797 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-08-21 16:46:50,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-08-21 16:46:52,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-21 16:46:53,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-21 16:46:53,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 38 [2021-08-21 16:46:53,589 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-08-21 16:46:53,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 38 [2021-08-21 16:46:54,524 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:46:54,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:46:55,432 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:46:55,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:46:57,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 20 [2021-08-21 16:46:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:46:57,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411758532] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:46:57,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:46:57,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 49] total 79 [2021-08-21 16:46:57,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068049592] [2021-08-21 16:46:57,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-08-21 16:46:57,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:46:57,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-08-21 16:46:57,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=5856, Unknown=0, NotChecked=0, Total=6162 [2021-08-21 16:46:57,636 INFO L87 Difference]: Start difference. First operand 19575 states and 23911 transitions. Second operand has 79 states, 79 states have (on average 5.037974683544304) internal successors, (398), 79 states have internal predecessors, (398), 0 states have call successors, (0), 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 16:47:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:47:10,824 INFO L93 Difference]: Finished difference Result 34239 states and 41827 transitions. [2021-08-21 16:47:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-08-21 16:47:10,824 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 5.037974683544304) internal successors, (398), 79 states have internal predecessors, (398), 0 states have call successors, (0), 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 291 [2021-08-21 16:47:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:47:10,914 INFO L225 Difference]: With dead ends: 34239 [2021-08-21 16:47:10,914 INFO L226 Difference]: Without dead ends: 29132 [2021-08-21 16:47:10,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 260 SyntacticMatches, 9 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10721 ImplicationChecksByTransitivity, 11416.2ms TimeCoverageRelationStatistics Valid=1829, Invalid=28621, Unknown=0, NotChecked=0, Total=30450 [2021-08-21 16:47:10,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29132 states. [2021-08-21 16:47:11,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29132 to 22671. [2021-08-21 16:47:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22671 states, 22639 states have (on average 1.2234639339193427) internal successors, (27698), 22670 states have internal predecessors, (27698), 0 states have call successors, (0), 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 16:47:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22671 states to 22671 states and 27698 transitions. [2021-08-21 16:47:11,157 INFO L78 Accepts]: Start accepts. Automaton has 22671 states and 27698 transitions. Word has length 291 [2021-08-21 16:47:11,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:47:11,158 INFO L470 AbstractCegarLoop]: Abstraction has 22671 states and 27698 transitions. [2021-08-21 16:47:11,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 5.037974683544304) internal successors, (398), 79 states have internal predecessors, (398), 0 states have call successors, (0), 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 16:47:11,158 INFO L276 IsEmpty]: Start isEmpty. Operand 22671 states and 27698 transitions. [2021-08-21 16:47:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-08-21 16:47:11,180 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:47:11,180 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:47:11,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-08-21 16:47:11,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:47:11,381 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:47:11,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:47:11,381 INFO L82 PathProgramCache]: Analyzing trace with hash 250055754, now seen corresponding path program 18 times [2021-08-21 16:47:11,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:47:11,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440698444] [2021-08-21 16:47:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:47:11,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:47:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:47:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-21 16:47:14,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:47:14,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440698444] [2021-08-21 16:47:14,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440698444] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:47:14,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534503933] [2021-08-21 16:47:14,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-21 16:47:14,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:47:14,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:47:14,120 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:47:14,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-21 16:47:22,362 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-21 16:47:22,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:47:22,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 128 conjunts are in the unsatisfiable core [2021-08-21 16:47:22,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:47:22,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:47:22,489 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:47:22,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:47:22,736 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-21 16:47:22,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-08-21 16:47:22,815 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-21 16:47:22,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-08-21 16:47:23,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-08-21 16:47:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-21 16:47:25,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 38 [2021-08-21 16:47:26,514 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:47:26,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 44 [2021-08-21 16:47:26,549 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:47:26,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 38 [2021-08-21 16:47:28,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-21 16:47:28,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-08-21 16:47:29,394 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:47:29,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:47:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-21 16:47:29,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534503933] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:47:29,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:47:29,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 48] total 88 [2021-08-21 16:47:29,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818462389] [2021-08-21 16:47:29,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-08-21 16:47:29,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:47:29,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-08-21 16:47:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=7303, Unknown=0, NotChecked=0, Total=7656 [2021-08-21 16:47:29,643 INFO L87 Difference]: Start difference. First operand 22671 states and 27698 transitions. Second operand has 88 states, 88 states have (on average 4.784090909090909) internal successors, (421), 88 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:47:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:47:42,795 INFO L93 Difference]: Finished difference Result 29339 states and 35799 transitions. [2021-08-21 16:47:42,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-08-21 16:47:42,795 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 4.784090909090909) internal successors, (421), 88 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2021-08-21 16:47:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:47:42,830 INFO L225 Difference]: With dead ends: 29339 [2021-08-21 16:47:42,830 INFO L226 Difference]: Without dead ends: 27283 [2021-08-21 16:47:42,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 263 SyntacticMatches, 6 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14118 ImplicationChecksByTransitivity, 12644.3ms TimeCoverageRelationStatistics Valid=2330, Invalid=37072, Unknown=0, NotChecked=0, Total=39402 [2021-08-21 16:47:42,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27283 states. [2021-08-21 16:47:43,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27283 to 22807. [2021-08-21 16:47:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22807 states, 22775 states have (on average 1.2230515916575193) internal successors, (27855), 22806 states have internal predecessors, (27855), 0 states have call successors, (0), 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 16:47:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22807 states to 22807 states and 27855 transitions. [2021-08-21 16:47:43,090 INFO L78 Accepts]: Start accepts. Automaton has 22807 states and 27855 transitions. Word has length 291 [2021-08-21 16:47:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:47:43,091 INFO L470 AbstractCegarLoop]: Abstraction has 22807 states and 27855 transitions. [2021-08-21 16:47:43,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 4.784090909090909) internal successors, (421), 88 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:47:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 22807 states and 27855 transitions. [2021-08-21 16:47:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-08-21 16:47:43,114 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:47:43,114 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:47:43,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-21 16:47:43,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-08-21 16:47:43,315 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:47:43,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:47:43,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1580693018, now seen corresponding path program 19 times [2021-08-21 16:47:43,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:47:43,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366288073] [2021-08-21 16:47:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:47:43,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:47:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:47:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-21 16:47:45,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:47:45,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366288073] [2021-08-21 16:47:45,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366288073] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:47:45,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627293478] [2021-08-21 16:47:45,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-21 16:47:45,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:47:45,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:47:45,812 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:47:45,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-08-21 16:47:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:47:54,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 131 conjunts are in the unsatisfiable core [2021-08-21 16:47:54,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:47:54,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:47:54,728 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:47:54,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:47:54,947 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-08-21 16:47:54,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-08-21 16:47:55,078 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-08-21 16:47:55,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-08-21 16:47:55,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-21 16:47:56,737 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:47:56,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:47:57,711 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:47:57,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:47:57,737 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:47:57,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-21 16:47:59,106 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:47:59,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:48:00,719 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:48:00,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:48:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 4 proven. 317 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-08-21 16:48:00,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627293478] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:48:00,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:48:00,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 50] total 77 [2021-08-21 16:48:00,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608304211] [2021-08-21 16:48:00,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-08-21 16:48:00,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:48:00,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-08-21 16:48:00,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=5549, Unknown=0, NotChecked=0, Total=5852 [2021-08-21 16:48:00,967 INFO L87 Difference]: Start difference. First operand 22807 states and 27855 transitions. Second operand has 77 states, 77 states have (on average 4.415584415584416) internal successors, (340), 77 states have internal predecessors, (340), 0 states have call successors, (0), 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 16:48:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:48:11,620 INFO L93 Difference]: Finished difference Result 30223 states and 36871 transitions. [2021-08-21 16:48:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-08-21 16:48:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.415584415584416) internal successors, (340), 77 states have internal predecessors, (340), 0 states have call successors, (0), 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 291 [2021-08-21 16:48:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:48:11,655 INFO L225 Difference]: With dead ends: 30223 [2021-08-21 16:48:11,655 INFO L226 Difference]: Without dead ends: 27355 [2021-08-21 16:48:11,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 271 SyntacticMatches, 6 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10181 ImplicationChecksByTransitivity, 9207.8ms TimeCoverageRelationStatistics Valid=1780, Invalid=26612, Unknown=0, NotChecked=0, Total=28392 [2021-08-21 16:48:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27355 states. [2021-08-21 16:48:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27355 to 22247. [2021-08-21 16:48:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22247 states, 22215 states have (on average 1.2221922124690525) internal successors, (27151), 22246 states have internal predecessors, (27151), 0 states have call successors, (0), 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 16:48:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22247 states to 22247 states and 27151 transitions. [2021-08-21 16:48:11,907 INFO L78 Accepts]: Start accepts. Automaton has 22247 states and 27151 transitions. Word has length 291 [2021-08-21 16:48:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:48:11,908 INFO L470 AbstractCegarLoop]: Abstraction has 22247 states and 27151 transitions. [2021-08-21 16:48:11,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.415584415584416) internal successors, (340), 77 states have internal predecessors, (340), 0 states have call successors, (0), 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 16:48:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 22247 states and 27151 transitions. [2021-08-21 16:48:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-08-21 16:48:11,930 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:48:11,930 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:48:11,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-08-21 16:48:12,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-08-21 16:48:12,139 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:48:12,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:48:12,139 INFO L82 PathProgramCache]: Analyzing trace with hash 2121158222, now seen corresponding path program 20 times [2021-08-21 16:48:12,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:48:12,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839038301] [2021-08-21 16:48:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:48:12,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:48:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:48:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:48:14,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:48:14,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839038301] [2021-08-21 16:48:14,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839038301] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:48:14,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874033214] [2021-08-21 16:48:14,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-21 16:48:14,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:48:14,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:48:14,368 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:48:14,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-08-21 16:48:23,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-21 16:48:23,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:48:23,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 115 conjunts are in the unsatisfiable core [2021-08-21 16:48:23,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:48:23,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-08-21 16:48:23,624 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:48:23,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:48:23,829 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-21 16:48:23,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-08-21 16:48:23,908 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-21 16:48:23,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-08-21 16:48:24,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-21 16:48:25,505 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:48:25,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:48:26,445 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:48:26,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:48:26,478 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:48:26,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-08-21 16:48:27,341 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:48:27,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-08-21 16:48:29,187 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:48:29,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:48:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:48:29,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874033214] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:48:29,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:48:29,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 49] total 71 [2021-08-21 16:48:29,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990537688] [2021-08-21 16:48:29,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-08-21 16:48:29,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:48:29,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-08-21 16:48:29,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=4708, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 16:48:29,426 INFO L87 Difference]: Start difference. First operand 22247 states and 27151 transitions. Second operand has 71 states, 71 states have (on average 5.0) internal successors, (355), 71 states have internal predecessors, (355), 0 states have call successors, (0), 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 16:48:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:48:40,383 INFO L93 Difference]: Finished difference Result 32551 states and 39682 transitions. [2021-08-21 16:48:40,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-08-21 16:48:40,383 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.0) internal successors, (355), 71 states have internal predecessors, (355), 0 states have call successors, (0), 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 291 [2021-08-21 16:48:40,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:48:40,419 INFO L225 Difference]: With dead ends: 32551 [2021-08-21 16:48:40,419 INFO L226 Difference]: Without dead ends: 28792 [2021-08-21 16:48:40,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 269 SyntacticMatches, 9 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9505 ImplicationChecksByTransitivity, 9120.8ms TimeCoverageRelationStatistics Valid=1663, Invalid=25727, Unknown=0, NotChecked=0, Total=27390 [2021-08-21 16:48:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28792 states. [2021-08-21 16:48:40,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28792 to 21975. [2021-08-21 16:48:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21975 states, 21943 states have (on average 1.2231235473727384) internal successors, (26839), 21974 states have internal predecessors, (26839), 0 states have call successors, (0), 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 16:48:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21975 states to 21975 states and 26839 transitions. [2021-08-21 16:48:40,721 INFO L78 Accepts]: Start accepts. Automaton has 21975 states and 26839 transitions. Word has length 291 [2021-08-21 16:48:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:48:40,721 INFO L470 AbstractCegarLoop]: Abstraction has 21975 states and 26839 transitions. [2021-08-21 16:48:40,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 5.0) internal successors, (355), 71 states have internal predecessors, (355), 0 states have call successors, (0), 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 16:48:40,722 INFO L276 IsEmpty]: Start isEmpty. Operand 21975 states and 26839 transitions. [2021-08-21 16:48:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-08-21 16:48:40,743 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:48:40,743 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:48:40,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-08-21 16:48:40,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:48:40,949 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:48:40,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:48:40,950 INFO L82 PathProgramCache]: Analyzing trace with hash -7982676, now seen corresponding path program 21 times [2021-08-21 16:48:40,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:48:40,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223668383] [2021-08-21 16:48:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:48:40,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:48:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:48:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:48:43,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:48:43,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223668383] [2021-08-21 16:48:43,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223668383] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:48:43,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866697640] [2021-08-21 16:48:43,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-21 16:48:43,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:48:43,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:48:43,530 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:48:43,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-08-21 16:48:53,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-21 16:48:53,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-21 16:48:53,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 106 conjunts are in the unsatisfiable core [2021-08-21 16:48:53,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 16:48:53,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-21 16:48:53,635 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-21 16:48:53,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-21 16:48:53,853 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-08-21 16:48:53,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-08-21 16:48:53,938 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-08-21 16:48:53,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-08-21 16:48:54,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-21 16:48:55,595 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-08-21 16:48:55,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 39 [2021-08-21 16:48:56,921 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-08-21 16:48:56,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 53 [2021-08-21 16:48:58,363 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-08-21 16:48:58,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 53 [2021-08-21 16:48:58,443 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-08-21 16:48:58,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 39 [2021-08-21 16:49:01,112 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-08-21 16:49:01,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 19 [2021-08-21 16:49:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 102 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:49:01,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866697640] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:49:01,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 16:49:01,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 54] total 92 [2021-08-21 16:49:01,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553030608] [2021-08-21 16:49:01,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-08-21 16:49:01,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:49:01,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-08-21 16:49:01,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=7725, Unknown=0, NotChecked=0, Total=8372 [2021-08-21 16:49:01,378 INFO L87 Difference]: Start difference. First operand 21975 states and 26839 transitions. Second operand has 92 states, 92 states have (on average 5.739130434782608) internal successors, (528), 92 states have internal predecessors, (528), 0 states have call successors, (0), 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 16:49:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:49:18,750 INFO L93 Difference]: Finished difference Result 37096 states and 45179 transitions. [2021-08-21 16:49:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-08-21 16:49:18,750 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 5.739130434782608) internal successors, (528), 92 states have internal predecessors, (528), 0 states have call successors, (0), 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 291 [2021-08-21 16:49:18,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:49:18,773 INFO L225 Difference]: With dead ends: 37096 [2021-08-21 16:49:18,773 INFO L226 Difference]: Without dead ends: 19609 [2021-08-21 16:49:18,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 254 SyntacticMatches, 6 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16184 ImplicationChecksByTransitivity, 16380.2ms TimeCoverageRelationStatistics Valid=4011, Invalid=44609, Unknown=0, NotChecked=0, Total=48620 [2021-08-21 16:49:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19609 states. [2021-08-21 16:49:18,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19609 to 16252. [2021-08-21 16:49:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16252 states, 16224 states have (on average 1.2182569033530573) internal successors, (19765), 16251 states have internal predecessors, (19765), 0 states have call successors, (0), 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 16:49:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16252 states to 16252 states and 19765 transitions. [2021-08-21 16:49:18,960 INFO L78 Accepts]: Start accepts. Automaton has 16252 states and 19765 transitions. Word has length 291 [2021-08-21 16:49:18,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:49:18,960 INFO L470 AbstractCegarLoop]: Abstraction has 16252 states and 19765 transitions. [2021-08-21 16:49:18,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 5.739130434782608) internal successors, (528), 92 states have internal predecessors, (528), 0 states have call successors, (0), 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 16:49:18,961 INFO L276 IsEmpty]: Start isEmpty. Operand 16252 states and 19765 transitions. [2021-08-21 16:49:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-08-21 16:49:18,976 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:49:18,976 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 16:49:19,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-08-21 16:49:19,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-08-21 16:49:19,177 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-21 16:49:19,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:49:19,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2121288399, now seen corresponding path program 22 times [2021-08-21 16:49:19,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:49:19,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946036039] [2021-08-21 16:49:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:49:19,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:49:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:49:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:49:20,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:49:20,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946036039] [2021-08-21 16:49:20,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946036039] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 16:49:20,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115269995] [2021-08-21 16:49:20,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-21 16:49:20,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 16:49:20,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:49:20,947 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 16:49:20,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process Received shutdown request... [2021-08-21 16:49:28,092 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-08-21 16:49:28,092 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-08-21 16:49:29,122 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 16:49:29,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2021-08-21 16:49:29,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-08-21 16:49:29,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-08-21 16:49:29,323 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 297 with TraceHistMax 5,while executing Executor. [2021-08-21 16:49:29,324 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 16:49:29,324 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 16:49:29,325 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 16:49:29,325 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 16:49:29,325 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 16:49:29,328 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 16:49:29,328 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 16:49:29,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:49:29 BasicIcfg [2021-08-21 16:49:29,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 16:49:29,330 INFO L168 Benchmark]: Toolchain (without parser) took 710572.55 ms. Allocated memory was 213.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 177.4 MB in the beginning and 1.1 GB in the end (delta: -893.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. [2021-08-21 16:49:29,330 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 213.9 MB. Free memory is still 196.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 16:49:29,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.03 ms. Allocated memory is still 213.9 MB. Free memory was 177.2 MB in the beginning and 178.2 MB in the end (delta: -963.1 kB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-21 16:49:29,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.55 ms. Allocated memory is still 213.9 MB. Free memory was 178.2 MB in the beginning and 175.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-21 16:49:29,331 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 ms. Allocated memory is still 213.9 MB. Free memory was 175.5 MB in the beginning and 173.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 16:49:29,331 INFO L168 Benchmark]: RCFGBuilder took 599.92 ms. Allocated memory is still 213.9 MB. Free memory was 173.8 MB in the beginning and 192.2 MB in the end (delta: -18.4 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. [2021-08-21 16:49:29,331 INFO L168 Benchmark]: TraceAbstraction took 709246.92 ms. Allocated memory was 213.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 191.7 MB in the beginning and 1.1 GB in the end (delta: -878.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. [2021-08-21 16:49:29,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 213.9 MB. Free memory is still 196.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 641.03 ms. Allocated memory is still 213.9 MB. Free memory was 177.2 MB in the beginning and 178.2 MB in the end (delta: -963.1 kB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.55 ms. Allocated memory is still 213.9 MB. Free memory was 178.2 MB in the beginning and 175.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.37 ms. Allocated memory is still 213.9 MB. Free memory was 175.5 MB in the beginning and 173.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 599.92 ms. Allocated memory is still 213.9 MB. Free memory was 173.8 MB in the beginning and 192.2 MB in the end (delta: -18.4 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 709246.92 ms. Allocated memory was 213.9 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 191.7 MB in the beginning and 1.1 GB in the end (delta: -878.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 19268, positive: 17592, positive conditional: 17592, positive unconditional: 0, negative: 1676, negative conditional: 1676, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 17659, positive: 17592, positive conditional: 0, positive unconditional: 17592, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3202, positive: 3185, positive conditional: 0, positive unconditional: 3185, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3202, positive: 3183, positive conditional: 0, positive unconditional: 3183, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 42, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17659, positive: 14407, positive conditional: 0, positive unconditional: 14407, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 3202, unknown conditional: 0, unknown unconditional: 3202] , Statistics on independence cache: Total cache size (in pairs): 3202, Positive cache size: 3185, Positive conditional cache size: 0, Positive unconditional cache size: 3185, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Independence queries for same thread: 1609 - 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 - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 297 with TraceHistMax 5,while executing Executor. - TimeoutResultAtElement [Line: 1023]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 297 with TraceHistMax 5,while executing Executor. - TimeoutResultAtElement [Line: 1022]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 297 with TraceHistMax 5,while executing Executor. - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 297 with TraceHistMax 5,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 234 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 709075.0ms, OverallIterations: 39, TraceHistogramMax: 6, EmptinessCheckTime: 625.4ms, AutomataDifference: 390967.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 660.5ms, PartialOrderReductionTime: 644.5ms, HoareTripleCheckerStatistics: 14007 SDtfs, 67156 SDslu, 398612 SDs, 0 SdLazy, 157562 SolverSat, 3547 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 69570.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10968 GetRequests, 6785 SyntacticMatches, 163 SemanticMatches, 4020 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254728 ImplicationChecksByTransitivity, 356440.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28546occurred in iteration=23, InterpolantAutomatonStates: 2682, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 8975.3ms AutomataMinimizationTime, 38 MinimizatonAttempts, 242686 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 929.0ms SsaConstructionTime, 3582.2ms SatisfiabilityAnalysisTime, 168824.3ms InterpolantComputationTime, 14872 NumberOfCodeBlocks, 14675 NumberOfCodeBlocksAsserted, 114 NumberOfCheckSat, 14801 ConstructedInterpolants, 170 QuantifiedInterpolants, 273484 SizeOfPredicates, 1316 NumberOfNonLiveVariables, 14534 ConjunctsInSsa, 2346 ConjunctsInUnsatCore, 71 InterpolantComputations, 7 PerfectInterpolantSequences, 1789/13666 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown