/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-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 16:49:39,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 16:49:39,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 16:49:39,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 16:49:39,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 16:49:39,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 16:49:39,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 16:49:39,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 16:49:39,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 16:49:39,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 16:49:39,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 16:49:39,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 16:49:39,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 16:49:39,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 16:49:39,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 16:49:39,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 16:49:39,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 16:49:39,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 16:49:39,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 16:49:39,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 16:49:39,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 16:49:39,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 16:49:39,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 16:49:39,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 16:49:39,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 16:49:40,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 16:49:40,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 16:49:40,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 16:49:40,002 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 16:49:40,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 16:49:40,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 16:49:40,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 16:49:40,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 16:49:40,042 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 16:49:40,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 16:49:40,043 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 16:49:40,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 16:49:40,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 16:49:40,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 16:49:40,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 16:49:40,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 16:49:40,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 16:49:40,045 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 16:49:40,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 16:49:40,045 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 16:49:40,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 16:49:40,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 16:49:40,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 16:49:40,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 16:49:40,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 16:49:40,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 16:49:40,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 16:49:40,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 16:49:40,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 16:49:40,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 16:49:40,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 16:49:40,047 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 16:49:40,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 16:49:40,047 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 16:49:40,047 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 16:49:40,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 16:49:40,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 16:49:40,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 16:49:40,322 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 16:49:40,322 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 16:49:40,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-08-21 16:49:40,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ff8aa94/4d1f1848595b4c7e9413a1ecbeb16f94/FLAG926d8de24 [2021-08-21 16:49:40,878 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 16:49:40,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-08-21 16:49:40,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ff8aa94/4d1f1848595b4c7e9413a1ecbeb16f94/FLAG926d8de24 [2021-08-21 16:49:41,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ff8aa94/4d1f1848595b4c7e9413a1ecbeb16f94 [2021-08-21 16:49:41,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 16:49:41,361 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 16:49:41,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 16:49:41,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 16:49:41,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 16:49:41,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5240e9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41, skipping insertion in model container [2021-08-21 16:49:41,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 16:49:41,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 16:49:41,522 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-21 16:49:41,620 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-atomic/dekker.i[31403,31416] [2021-08-21 16:49:41,623 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-atomic/dekker.i[32483,32496] [2021-08-21 16:49:41,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 16:49:41,631 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 16:49:41,640 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-21 16:49:41,653 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-atomic/dekker.i[31403,31416] [2021-08-21 16:49:41,655 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-atomic/dekker.i[32483,32496] [2021-08-21 16:49:41,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 16:49:41,680 INFO L208 MainTranslator]: Completed translation [2021-08-21 16:49:41,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41 WrapperNode [2021-08-21 16:49:41,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 16:49:41,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 16:49:41,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 16:49:41,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 16:49:41,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 16:49:41,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 16:49:41,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 16:49:41,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 16:49:41,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 16:49:41,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 16:49:41,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 16:49:41,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 16:49:41,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (1/1) ... [2021-08-21 16:49:41,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 16:49:41,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 16:49:41,738 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 16:49:41,759 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 16:49:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-21 16:49:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-08-21 16:49:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-08-21 16:49:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-08-21 16:49:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-08-21 16:49:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 16:49:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 16:49:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 16:49:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 16:49:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 16:49:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 16:49:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 16:49:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 16:49:41,775 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 16:49:42,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 16:49:42,130 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-21 16:49:42,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:49:42 BoogieIcfgContainer [2021-08-21 16:49:42,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 16:49:42,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 16:49:42,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 16:49:42,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 16:49:42,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:49:41" (1/3) ... [2021-08-21 16:49:42,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676002cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:49:42, skipping insertion in model container [2021-08-21 16:49:42,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:49:41" (2/3) ... [2021-08-21 16:49:42,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676002cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:49:42, skipping insertion in model container [2021-08-21 16:49:42,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:49:42" (3/3) ... [2021-08-21 16:49:42,139 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-08-21 16:49:42,145 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 16:49:42,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 16:49:42,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-21 16:49:42,145 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 16:49:42,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,175 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,175 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,176 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,176 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,176 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,177 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,181 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,181 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,182 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,183 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,201 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,201 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 16:49:42,209 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-21 16:49:42,247 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 16:49:42,251 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 16:49:42,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-21 16:49:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 1862 states, 1817 states have (on average 2.286186020913594) internal successors, (4154), 1861 states have internal predecessors, (4154), 0 states have call successors, (0), 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 16:49:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-21 16:49:42,474 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:49:42,474 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] [2021-08-21 16:49:42,475 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-21 16:49:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:49:42,481 INFO L82 PathProgramCache]: Analyzing trace with hash -899152307, now seen corresponding path program 1 times [2021-08-21 16:49:42,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:49:42,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509691740] [2021-08-21 16:49:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:49:42,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:49:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:49:42,669 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 16:49:42,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:49:42,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509691740] [2021-08-21 16:49:42,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509691740] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:49:42,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 16:49:42,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 16:49:42,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292504543] [2021-08-21 16:49:42,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-21 16:49:42,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:49:42,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-21 16:49:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-21 16:49:42,685 INFO L87 Difference]: Start difference. First operand has 1862 states, 1817 states have (on average 2.286186020913594) internal successors, (4154), 1861 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 16:49:42,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:49:42,710 INFO L93 Difference]: Finished difference Result 1862 states and 3695 transitions. [2021-08-21 16:49:42,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-21 16:49:42,711 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-08-21 16:49:42,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:49:42,730 INFO L225 Difference]: With dead ends: 1862 [2021-08-21 16:49:42,730 INFO L226 Difference]: Without dead ends: 1771 [2021-08-21 16:49:42,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-21 16:49:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2021-08-21 16:49:42,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1771. [2021-08-21 16:49:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1750 states have (on average 2.0594285714285716) internal successors, (3604), 1770 states have internal predecessors, (3604), 0 states have call successors, (0), 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 16:49:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 3604 transitions. [2021-08-21 16:49:42,827 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 3604 transitions. Word has length 30 [2021-08-21 16:49:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:49:42,827 INFO L470 AbstractCegarLoop]: Abstraction has 1771 states and 3604 transitions. [2021-08-21 16:49:42,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 16:49:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 3604 transitions. [2021-08-21 16:49:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-21 16:49:42,829 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:49:42,829 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] [2021-08-21 16:49:42,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 16:49:42,829 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-21 16:49:42,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:49:42,831 INFO L82 PathProgramCache]: Analyzing trace with hash -899122516, now seen corresponding path program 1 times [2021-08-21 16:49:42,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:49:42,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141133193] [2021-08-21 16:49:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:49:42,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:49:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:49:42,887 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 16:49:42,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:49:42,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141133193] [2021-08-21 16:49:42,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141133193] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:49:42,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 16:49:42,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 16:49:42,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148550301] [2021-08-21 16:49:42,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 16:49:42,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:49:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 16:49:42,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 16:49:42,890 INFO L87 Difference]: Start difference. First operand 1771 states and 3604 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 16:49:42,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:49:42,924 INFO L93 Difference]: Finished difference Result 1750 states and 3495 transitions. [2021-08-21 16:49:42,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 16:49:42,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-08-21 16:49:42,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:49:42,931 INFO L225 Difference]: With dead ends: 1750 [2021-08-21 16:49:42,931 INFO L226 Difference]: Without dead ends: 1425 [2021-08-21 16:49:42,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 16:49:42,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-08-21 16:49:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1362. [2021-08-21 16:49:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1346 states have (on average 2.0564635958395243) internal successors, (2768), 1361 states have internal predecessors, (2768), 0 states have call successors, (0), 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 16:49:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2768 transitions. [2021-08-21 16:49:42,959 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2768 transitions. Word has length 30 [2021-08-21 16:49:42,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:49:42,960 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 2768 transitions. [2021-08-21 16:49:42,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 16:49:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2768 transitions. [2021-08-21 16:49:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 16:49:42,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:49:42,964 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] [2021-08-21 16:49:42,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 16:49:42,964 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-21 16:49:42,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:49:42,965 INFO L82 PathProgramCache]: Analyzing trace with hash -957605978, now seen corresponding path program 1 times [2021-08-21 16:49:42,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:49:42,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387130959] [2021-08-21 16:49:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:49:42,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:49:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:49:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 16:49:43,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:49:43,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387130959] [2021-08-21 16:49:43,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387130959] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:49:43,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 16:49:43,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 16:49:43,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521705692] [2021-08-21 16:49:43,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 16:49:43,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:49:43,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 16:49:43,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 16:49:43,017 INFO L87 Difference]: Start difference. First operand 1362 states and 2768 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 16:49:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:49:43,034 INFO L93 Difference]: Finished difference Result 1254 states and 2508 transitions. [2021-08-21 16:49:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 16:49:43,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-08-21 16:49:43,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:49:43,038 INFO L225 Difference]: With dead ends: 1254 [2021-08-21 16:49:43,038 INFO L226 Difference]: Without dead ends: 913 [2021-08-21 16:49:43,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 16:49:43,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2021-08-21 16:49:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 913. [2021-08-21 16:49:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 905 states have (on average 2.0541436464088396) internal successors, (1859), 912 states have internal predecessors, (1859), 0 states have call successors, (0), 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 16:49:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1859 transitions. [2021-08-21 16:49:43,051 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1859 transitions. Word has length 36 [2021-08-21 16:49:43,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:49:43,052 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1859 transitions. [2021-08-21 16:49:43,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 16:49:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1859 transitions. [2021-08-21 16:49:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-21 16:49:43,053 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:49:43,054 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] [2021-08-21 16:49:43,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 16:49:43,054 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-21 16:49:43,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:49:43,054 INFO L82 PathProgramCache]: Analyzing trace with hash -400762505, now seen corresponding path program 1 times [2021-08-21 16:49:43,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:49:43,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40197939] [2021-08-21 16:49:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:49:43,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:49:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:49:43,105 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 16:49:43,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:49:43,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40197939] [2021-08-21 16:49:43,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40197939] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:49:43,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 16:49:43,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-21 16:49:43,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535120245] [2021-08-21 16:49:43,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-21 16:49:43,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:49:43,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-21 16:49:43,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 16:49:43,111 INFO L87 Difference]: Start difference. First operand 913 states and 1859 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 16:49:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:49:43,161 INFO L93 Difference]: Finished difference Result 1345 states and 2887 transitions. [2021-08-21 16:49:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:49:43,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-08-21 16:49:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:49:43,167 INFO L225 Difference]: With dead ends: 1345 [2021-08-21 16:49:43,167 INFO L226 Difference]: Without dead ends: 1193 [2021-08-21 16:49:43,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-21 16:49:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2021-08-21 16:49:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 873. [2021-08-21 16:49:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 865 states have (on average 2.038150289017341) internal successors, (1763), 872 states have internal predecessors, (1763), 0 states have call successors, (0), 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 16:49:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1763 transitions. [2021-08-21 16:49:43,212 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1763 transitions. Word has length 41 [2021-08-21 16:49:43,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:49:43,218 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1763 transitions. [2021-08-21 16:49:43,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 16:49:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1763 transitions. [2021-08-21 16:49:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-21 16:49:43,220 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 16:49:43,220 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] [2021-08-21 16:49:43,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 16:49:43,220 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-08-21 16:49:43,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 16:49:43,221 INFO L82 PathProgramCache]: Analyzing trace with hash -2064293961, now seen corresponding path program 2 times [2021-08-21 16:49:43,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 16:49:43,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499077582] [2021-08-21 16:49:43,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 16:49:43,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 16:49:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 16:49:43,271 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 16:49:43,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 16:49:43,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499077582] [2021-08-21 16:49:43,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499077582] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 16:49:43,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 16:49:43,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-21 16:49:43,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435777852] [2021-08-21 16:49:43,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-21 16:49:43,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 16:49:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-21 16:49:43,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 16:49:43,272 INFO L87 Difference]: Start difference. First operand 873 states and 1763 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 16:49:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 16:49:43,332 INFO L93 Difference]: Finished difference Result 1126 states and 2504 transitions. [2021-08-21 16:49:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 16:49:43,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-08-21 16:49:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 16:49:43,333 INFO L225 Difference]: With dead ends: 1126 [2021-08-21 16:49:43,333 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 16:49:43,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-21 16:49:43,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 16:49:43,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 16:49:43,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 16:49:43,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 16:49:43,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-08-21 16:49:43,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 16:49:43,334 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 16:49:43,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 16:49:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 16:49:43,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 16:49:43,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 16:49:43,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 16:49:43,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 16:49:43,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 16:49:43,337 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 16:49:43,337 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 16:49:43,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 16:49:43,340 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 16:49:43,340 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 16:49:43,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:49:43 BasicIcfg [2021-08-21 16:49:43,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 16:49:43,343 INFO L168 Benchmark]: Toolchain (without parser) took 1980.79 ms. Allocated memory is still 183.5 MB. Free memory was 145.6 MB in the beginning and 132.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-08-21 16:49:43,343 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 183.5 MB. Free memory is still 163.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 16:49:43,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.71 ms. Allocated memory is still 183.5 MB. Free memory was 145.5 MB in the beginning and 155.7 MB in the end (delta: -10.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. [2021-08-21 16:49:43,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.84 ms. Allocated memory is still 183.5 MB. Free memory was 155.7 MB in the beginning and 153.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 16:49:43,344 INFO L168 Benchmark]: Boogie Preprocessor took 14.81 ms. Allocated memory is still 183.5 MB. Free memory was 153.6 MB in the beginning and 152.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 16:49:43,344 INFO L168 Benchmark]: RCFGBuilder took 411.96 ms. Allocated memory is still 183.5 MB. Free memory was 152.0 MB in the beginning and 126.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-08-21 16:49:43,344 INFO L168 Benchmark]: TraceAbstraction took 1207.17 ms. Allocated memory is still 183.5 MB. Free memory was 126.3 MB in the beginning and 132.7 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 16:49:43,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 183.5 MB. Free memory is still 163.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 316.71 ms. Allocated memory is still 183.5 MB. Free memory was 145.5 MB in the beginning and 155.7 MB in the end (delta: -10.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.84 ms. Allocated memory is still 183.5 MB. Free memory was 155.7 MB in the beginning and 153.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.81 ms. Allocated memory is still 183.5 MB. Free memory was 153.6 MB in the beginning and 152.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 411.96 ms. Allocated memory is still 183.5 MB. Free memory was 152.0 MB in the beginning and 126.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1207.17 ms. Allocated memory is still 183.5 MB. Free memory was 126.3 MB in the beginning and 132.7 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 7214, positive: 5679, positive conditional: 5679, positive unconditional: 0, negative: 1535, negative conditional: 1535, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 5779, positive: 5679, positive conditional: 0, positive unconditional: 5679, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1099, positive: 1074, positive conditional: 0, positive unconditional: 1074, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1099, positive: 1072, positive conditional: 0, positive unconditional: 1072, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5779, positive: 4605, positive conditional: 0, positive unconditional: 4605, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 1099, unknown conditional: 0, unknown unconditional: 1099] , Statistics on independence cache: Total cache size (in pairs): 1099, Positive cache size: 1074, Positive conditional cache size: 0, Positive unconditional cache size: 1074, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Independence queries for same thread: 1435 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 132 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1093.0ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 20.7ms, AutomataDifference: 240.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 209.0ms, PartialOrderReductionTime: 199.1ms, HoareTripleCheckerStatistics: 473 SDtfs, 223 SDslu, 393 SDs, 0 SdLazy, 51 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1862occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 172.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 383 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.8ms SsaConstructionTime, 61.6ms SatisfiabilityAnalysisTime, 201.4ms InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 201 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 16:49:43,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...