/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-POR-NewStatesSleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-07 02:19:23,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-07 02:19:23,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-07 02:19:24,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-07 02:19:24,060 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-POR-NewStatesSleep-NoLbe-Lockstep.epf [2021-08-07 02:19:24,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-07 02:19:24,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-07 02:19:24,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-07 02:19:24,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-07 02:19:24,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-07 02:19:24,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-07 02:19:24,078 INFO L138 SettingsManager]: * Use SBE=true [2021-08-07 02:19:24,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-07 02:19:24,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-07 02:19:24,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-07 02:19:24,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-07 02:19:24,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-07 02:19:24,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-07 02:19:24,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-07 02:19:24,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-07 02:19:24,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-07 02:19:24,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-07 02:19:24,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-07 02:19:24,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-07 02:19:24,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-07 02:19:24,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-07 02:19:24,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-07 02:19:24,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-07 02:19:24,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-07 02:19:24,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-07 02:19:24,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-07 02:19:24,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-07 02:19:24,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-07 02:19:24,081 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-08-07 02:19:24,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-07 02:19:24,081 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-07 02:19:24,081 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-08-07 02:19:24,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-07 02:19:24,081 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-08-07 02:19:24,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-07 02:19:24,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-07 02:19:24,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-07 02:19:24,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-07 02:19:24,323 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-07 02:19:24,323 INFO L275 PluginConnector]: CDTParser initialized [2021-08-07 02:19:24,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i [2021-08-07 02:19:24,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12102ee52/0b546475dce94377ac9ee5a447dc89d9/FLAG54f500345 [2021-08-07 02:19:24,788 INFO L306 CDTParser]: Found 1 translation units. [2021-08-07 02:19:24,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i [2021-08-07 02:19:24,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12102ee52/0b546475dce94377ac9ee5a447dc89d9/FLAG54f500345 [2021-08-07 02:19:24,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12102ee52/0b546475dce94377ac9ee5a447dc89d9 [2021-08-07 02:19:24,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-07 02:19:24,823 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-07 02:19:24,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-07 02:19:24,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-07 02:19:24,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-07 02:19:24,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 02:19:24" (1/1) ... [2021-08-07 02:19:24,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25533b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:24, skipping insertion in model container [2021-08-07 02:19:24,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 02:19:24" (1/1) ... [2021-08-07 02:19:24,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-07 02:19:24,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-07 02:19:25,159 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i[30297,30310] [2021-08-07 02:19:25,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-07 02:19:25,169 INFO L203 MainTranslator]: Completed pre-run [2021-08-07 02:19:25,189 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i[30297,30310] [2021-08-07 02:19:25,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-07 02:19:25,219 INFO L208 MainTranslator]: Completed translation [2021-08-07 02:19:25,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25 WrapperNode [2021-08-07 02:19:25,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-07 02:19:25,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-07 02:19:25,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-07 02:19:25,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-07 02:19:25,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (1/1) ... [2021-08-07 02:19:25,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (1/1) ... [2021-08-07 02:19:25,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-07 02:19:25,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-07 02:19:25,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-07 02:19:25,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-07 02:19:25,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (1/1) ... [2021-08-07 02:19:25,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (1/1) ... [2021-08-07 02:19:25,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (1/1) ... [2021-08-07 02:19:25,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (1/1) ... [2021-08-07 02:19:25,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (1/1) ... [2021-08-07 02:19:25,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (1/1) ... [2021-08-07 02:19:25,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (1/1) ... [2021-08-07 02:19:25,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-07 02:19:25,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-07 02:19:25,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-07 02:19:25,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-07 02:19:25,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (1/1) ... [2021-08-07 02:19:25,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-07 02:19:25,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-07 02:19:25,314 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) [2021-08-07 02:19:25,337 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 [2021-08-07 02:19:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-08-07 02:19:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-08-07 02:19:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-08-07 02:19:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-08-07 02:19:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-07 02:19:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-07 02:19:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-07 02:19:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-07 02:19:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-07 02:19:25,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-07 02:19:25,351 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-07 02:19:25,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-07 02:19:25,632 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-08-07 02:19:25,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 02:19:25 BoogieIcfgContainer [2021-08-07 02:19:25,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-07 02:19:25,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-07 02:19:25,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-07 02:19:25,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-07 02:19:25,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 02:19:24" (1/3) ... [2021-08-07 02:19:25,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c60f4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 02:19:25, skipping insertion in model container [2021-08-07 02:19:25,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 02:19:25" (2/3) ... [2021-08-07 02:19:25,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c60f4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 02:19:25, skipping insertion in model container [2021-08-07 02:19:25,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 02:19:25" (3/3) ... [2021-08-07 02:19:25,639 INFO L111 eAbstractionObserver]: Analyzing ICFG 27_Boop_simple_vf.i [2021-08-07 02:19:25,642 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-07 02:19:25,642 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-07 02:19:25,642 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-07 02:19:25,643 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-07 02:19:25,672 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,672 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,672 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,672 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,673 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,673 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,673 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,673 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,674 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,674 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,674 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,674 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,675 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,676 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,678 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,679 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,680 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,683 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,685 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,694 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,694 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,694 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,694 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~rval~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~count~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-07 02:19:25,703 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-07 02:19:25,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-08-07 02:19:25,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-07 02:19:25,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-08-07 02:19:25,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2021-08-07 02:19:25,764 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork1 ======== [2021-08-07 02:19:25,769 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=PARTIAL_ORDER_FA, 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 [2021-08-07 02:19:25,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-07 02:19:25,814 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-07 02:19:25,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 02:19:25,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1052567923, now seen corresponding path program 1 times [2021-08-07 02:19:25,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 02:19:25,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163684042] [2021-08-07 02:19:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 02:19:25,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 02:19:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 02:19:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-07 02:19:25,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 02:19:25,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163684042] [2021-08-07 02:19:25,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163684042] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-07 02:19:25,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-07 02:19:25,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-07 02:19:25,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819434750] [2021-08-07 02:19:25,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-07 02:19:25,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 02:19:25,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-07 02:19:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-07 02:19:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,000 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 02:19:26,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-07 02:19:26,001 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-07 02:19:26,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-07 02:19:26,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 02:19:26,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1616973257, now seen corresponding path program 1 times [2021-08-07 02:19:26,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 02:19:26,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845637170] [2021-08-07 02:19:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 02:19:26,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 02:19:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 02:19:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-07 02:19:26,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 02:19:26,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845637170] [2021-08-07 02:19:26,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845637170] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-07 02:19:26,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-07 02:19:26,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-07 02:19:26,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303550572] [2021-08-07 02:19:26,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-07 02:19:26,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 02:19:26,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-07 02:19:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-07 02:19:26,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,122 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 02:19:26,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-07 02:19:26,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 02:19:26,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-07 02:19:26,193 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-07 02:19:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 02:19:26,197 INFO L82 PathProgramCache]: Analyzing trace with hash 681465820, now seen corresponding path program 1 times [2021-08-07 02:19:26,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 02:19:26,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340501303] [2021-08-07 02:19:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 02:19:26,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 02:19:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 02:19:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-07 02:19:26,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 02:19:26,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340501303] [2021-08-07 02:19:26,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340501303] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-07 02:19:26,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725302924] [2021-08-07 02:19:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 02:19:26,269 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-07 02:19:26,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-07 02:19:26,277 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) [2021-08-07 02:19:26,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-07 02:19:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 02:19:26,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-07 02:19:26,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-07 02:19:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-07 02:19:26,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725302924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-07 02:19:26,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-07 02:19:26,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-08-07 02:19:26,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102080255] [2021-08-07 02:19:26,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-07 02:19:26,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 02:19:26,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-07 02:19:26,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-07 02:19:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,751 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 02:19:26,751 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) [2021-08-07 02:19:26,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 02:19:26,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 02:19:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 02:19:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 02:19:26,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-07 02:19:27,001 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,SelfDestructingSolverStorable2 [2021-08-07 02:19:27,002 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-07 02:19:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 02:19:27,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1501039658, now seen corresponding path program 1 times [2021-08-07 02:19:27,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 02:19:27,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754163873] [2021-08-07 02:19:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 02:19:27,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 02:19:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-07 02:19:27,028 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-07 02:19:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-07 02:19:27,073 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-07 02:19:27,074 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-07 02:19:27,074 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-07 02:19:27,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-07 02:19:27,080 INFO L308 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was UNSAFE (1/2) [2021-08-07 02:19:27,082 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-07 02:19:27,082 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-07 02:19:27,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 02:19:27 BasicIcfg [2021-08-07 02:19:27,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-07 02:19:27,143 INFO L168 Benchmark]: Toolchain (without parser) took 2319.78 ms. Allocated memory is still 204.5 MB. Free memory was 167.8 MB in the beginning and 109.3 MB in the end (delta: 58.5 MB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. [2021-08-07 02:19:27,143 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 204.5 MB. Free memory is still 185.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-07 02:19:27,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.46 ms. Allocated memory is still 204.5 MB. Free memory was 167.6 MB in the beginning and 179.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-07 02:19:27,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.57 ms. Allocated memory is still 204.5 MB. Free memory was 179.0 MB in the beginning and 176.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-07 02:19:27,143 INFO L168 Benchmark]: Boogie Preprocessor took 19.78 ms. Allocated memory is still 204.5 MB. Free memory was 176.9 MB in the beginning and 175.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-07 02:19:27,143 INFO L168 Benchmark]: RCFGBuilder took 350.57 ms. Allocated memory is still 204.5 MB. Free memory was 175.9 MB in the beginning and 153.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-08-07 02:19:27,143 INFO L168 Benchmark]: TraceAbstraction took 1507.15 ms. Allocated memory is still 204.5 MB. Free memory was 152.8 MB in the beginning and 109.3 MB in the end (delta: 43.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 8.0 GB. [2021-08-07 02:19:27,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 204.5 MB. Free memory is still 185.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 393.46 ms. Allocated memory is still 204.5 MB. Free memory was 167.6 MB in the beginning and 179.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.57 ms. Allocated memory is still 204.5 MB. Free memory was 179.0 MB in the beginning and 176.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.78 ms. Allocated memory is still 204.5 MB. Free memory was 176.9 MB in the beginning and 175.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 350.57 ms. Allocated memory is still 204.5 MB. Free memory was 175.9 MB in the beginning and 153.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1507.15 ms. Allocated memory is still 204.5 MB. Free memory was 152.8 MB in the beginning and 109.3 MB in the end (delta: 43.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1576, positive: 1385, positive conditional: 1385, positive unconditional: 0, negative: 191, negative conditional: 191, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1389, positive: 1385, positive conditional: 1385, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1389, positive: 1385, positive conditional: 1385, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1399, positive: 1385, positive conditional: 1362, positive unconditional: 23, negative: 14, negative conditional: 10, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1399, positive: 1385, positive conditional: 92, positive unconditional: 1293, negative: 14, negative conditional: 4, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1399, positive: 1385, positive conditional: 92, positive unconditional: 1293, negative: 14, negative conditional: 4, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 340, positive: 338, positive conditional: 35, positive unconditional: 303, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 340, positive: 336, positive conditional: 0, positive unconditional: 336, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 26, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 24, negative conditional: 23, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1399, positive: 1047, positive conditional: 57, positive unconditional: 990, negative: 12, negative conditional: 3, negative unconditional: 9, unknown: 340, unknown conditional: 36, unknown unconditional: 304] , Statistics on independence cache: Total cache size (in pairs): 340, Positive cache size: 338, Positive conditional cache size: 35, Positive unconditional cache size: 303, Negative cache size: 2, Negative conditional cache size: 1, Negative unconditional cache size: 1, Eliminated conditions: 1276, Maximal queried relation: 3, Independence queries for same thread: 187 - 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 - CounterExampleResult [Line: 710]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L685] 0 int usecount; VAL [usecount=0] [L686] 0 int locked; VAL [locked=0, usecount=0] [L687] 0 int flag1 = 0; VAL [flag1=0, locked=0, usecount=0] [L688] 0 int flag2 = 0; VAL [flag1=0, flag2=0, locked=0, usecount=0] [L689] 0 int release_thr1 = 0; VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L744] 0 pthread_t t; VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L745] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L717] 1 void* rval; VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L718] 1 int count; VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L746] COND TRUE 0 1 VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L719] 1 usecount = 0 VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L720] 1 locked = 0 VAL [flag1=0, flag2=0, locked=0, release_thr1=0, usecount=0] [L721] 1 release_thr1 = 1 VAL [flag1=0, flag2=0, locked=0, release_thr1=1, usecount=0] [L722] COND TRUE 1 1 VAL [flag1=0, flag2=0, locked=0, release_thr1=1, usecount=0] [L746] FCALL, FORK 0 pthread_create(&t, 0, thr2, 0) VAL [arg={0:0}, flag1=0, flag2=0, locked=0, release_thr1=1, usecount=0] [L692] COND FALSE 2 !(!release_thr1) VAL [arg={0:0}, arg={0:0}, flag1=0, flag2=0, locked=0, release_thr1=1, usecount=0] [L693] 2 usecount = usecount + 1 VAL [arg={0:0}, arg={0:0}, flag1=0, flag2=0, locked=0, release_thr1=1, usecount=1] [L746] COND TRUE 0 1 VAL [arg={0:0}, arg={0:0}, flag1=0, flag2=0, locked=0, release_thr1=1, usecount=1] [L694] COND FALSE 2 !(\read(locked)) VAL [arg={0:0}, arg={0:0}, flag1=0, flag2=0, locked=0, release_thr1=1, usecount=1] [L696] 2 locked = 1 VAL [arg={0:0}, arg={0:0}, flag1=0, flag2=0, locked=1, release_thr1=1, usecount=1] [L697] 2 flag1 = 1 VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L724] COND TRUE 1 \read(flag1) VAL [arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L698] 2 return 0; VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L746] FCALL, FORK 0 pthread_create(&t, 0, thr2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L729] 1 rval = (void*)__VERIFIER_nondet_int() VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L730] COND TRUE 1 rval == 0 VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L732] 1 count = 1 VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=1] [L702] 1 usecount = usecount - 1 VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=1, release_thr1=1, usecount=0] [L703] 1 locked = 0 VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L738] COND TRUE 1 count != 0 VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L729] 1 rval = (void*)__VERIFIER_nondet_int() VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L730] COND FALSE 1 !(rval == 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L736] 1 count = 0 VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L738] COND FALSE 1 !(count != 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=0] [L702] 1 usecount = usecount - 1 VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=-1] [L703] 1 locked = 0 VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=-1] [L708] COND TRUE 1 usecount != 0 VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=-1] [L710] 1 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, flag1=1, flag2=0, locked=0, release_thr1=1, usecount=-1] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1340.2ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.6ms, PartialOrderReductionTime: 152.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.8ms SsaConstructionTime, 115.5ms SatisfiabilityAnalysisTime, 559.0ms InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 297 SizeOfPredicates, 0 NumberOfNonLiveVariables, 139 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 13/15 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 proved your program to be incorrect! [2021-08-07 02:19:27,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2021-08-07 02:19:27,385 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 Received shutdown request...