/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/test/semi1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 16:17:00,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 16:17:00,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 16:17:00,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 16:17:00,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-06 16:17:00,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 16:17:00,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 16:17:00,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 16:17:00,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 16:17:00,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 16:17:00,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 16:17:00,705 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 16:17:00,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 16:17:00,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 16:17:00,705 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 16:17:00,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 16:17:00,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 16:17:00,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 16:17:00,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-06 16:17:00,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 16:17:00,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-06 16:17:00,708 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-06 16:17:00,708 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 16:17:00,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-06 16:17:00,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 16:17:00,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-06 16:17:00,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 16:17:00,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 16:17:00,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 16:17:00,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:17:00,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 16:17:00,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 16:17:00,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-06 16:17:00,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-06 16:17:00,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-06 16:17:00,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-06 16:17:00,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 16:17:00,712 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 16:17:01,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 16:17:01,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 16:17:01,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 16:17:01,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 16:17:01,186 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 16:17:01,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test/semi1.wvr.c [2021-10-06 16:17:01,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35b5f5e4b/14058eaf97b34155814acacd2aee35a2/FLAG3776c8c9d [2021-10-06 16:17:01,836 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 16:17:01,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/semi1.wvr.c [2021-10-06 16:17:01,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35b5f5e4b/14058eaf97b34155814acacd2aee35a2/FLAG3776c8c9d [2021-10-06 16:17:02,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35b5f5e4b/14058eaf97b34155814acacd2aee35a2 [2021-10-06 16:17:02,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 16:17:02,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-06 16:17:02,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 16:17:02,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 16:17:02,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 16:17:02,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81f3e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02, skipping insertion in model container [2021-10-06 16:17:02,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 16:17:02,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 16:17:02,461 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/semi1.wvr.c[1890,1903] [2021-10-06 16:17:02,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:17:02,473 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 16:17:02,493 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/semi1.wvr.c[1890,1903] [2021-10-06 16:17:02,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:17:02,510 INFO L208 MainTranslator]: Completed translation [2021-10-06 16:17:02,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02 WrapperNode [2021-10-06 16:17:02,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 16:17:02,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 16:17:02,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 16:17:02,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 16:17:02,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 16:17:02,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 16:17:02,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 16:17:02,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 16:17:02,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 16:17:02,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 16:17:02,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 16:17:02,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 16:17:02,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (1/1) ... [2021-10-06 16:17:02,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:17:02,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:17:02,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 16:17:02,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 16:17:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 16:17:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 16:17:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 16:17:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 16:17:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-06 16:17:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 16:17:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-06 16:17:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 16:17:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 16:17:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 16:17:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 16:17:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-06 16:17:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 16:17:02,704 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 16:17:03,349 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 16:17:03,349 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 16:17:03,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:17:03 BoogieIcfgContainer [2021-10-06 16:17:03,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 16:17:03,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 16:17:03,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 16:17:03,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 16:17:03,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 04:17:02" (1/3) ... [2021-10-06 16:17:03,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1712a0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:17:03, skipping insertion in model container [2021-10-06 16:17:03,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:17:02" (2/3) ... [2021-10-06 16:17:03,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1712a0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:17:03, skipping insertion in model container [2021-10-06 16:17:03,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:17:03" (3/3) ... [2021-10-06 16:17:03,370 INFO L111 eAbstractionObserver]: Analyzing ICFG semi1.wvr.c [2021-10-06 16:17:03,376 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-06 16:17:03,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 16:17:03,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-06 16:17:03,377 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 16:17:03,432 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,432 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,436 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,436 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,437 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,438 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,439 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,440 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,440 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,440 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,440 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,441 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,441 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,442 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,442 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,442 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,453 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,454 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,454 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,456 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,456 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:17:03,485 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 16:17:03,554 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 16:17:03,577 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 [2021-10-06 16:17:03,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-06 16:17:03,606 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 16:17:03,621 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 64 transitions, 144 flow [2021-10-06 16:17:03,625 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 64 transitions, 144 flow [2021-10-06 16:17:03,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 64 transitions, 144 flow [2021-10-06 16:17:03,703 INFO L129 PetriNetUnfolder]: 2/62 cut-off events. [2021-10-06 16:17:03,704 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 16:17:03,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 62 events. 2/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2021-10-06 16:17:03,711 INFO L116 LiptonReduction]: Number of co-enabled transitions 152 [2021-10-06 16:17:06,626 INFO L131 LiptonReduction]: Checked pairs total: 282 [2021-10-06 16:17:06,626 INFO L133 LiptonReduction]: Total number of compositions: 57 [2021-10-06 16:17:06,636 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 17 transitions, 50 flow [2021-10-06 16:17:06,649 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 46 states, 38 states have (on average 2.236842105263158) internal successors, (85), 45 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:17:06,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 38 states have (on average 2.236842105263158) internal successors, (85), 45 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:17:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 16:17:06,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:17:06,657 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 16:17:06,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-06 16:17:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:17:06,663 INFO L82 PathProgramCache]: Analyzing trace with hash 267205, now seen corresponding path program 1 times [2021-10-06 16:17:06,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:17:06,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634959125] [2021-10-06 16:17:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:17:06,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:17:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 16:17:06,798 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-06 16:17:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 16:17:06,850 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-06 16:17:06,853 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-06 16:17:06,854 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:17:06,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:17:06,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:17:06,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:17:06,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:17:06,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 16:17:06,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 16:17:06,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:17:06,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:17:06,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:17:06,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-06 16:17:06,868 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 16:17:06,868 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 16:17:06,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 04:17:06 BasicIcfg [2021-10-06 16:17:06,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 16:17:06,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-06 16:17:06,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-06 16:17:06,892 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-06 16:17:06,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:17:03" (3/4) ... [2021-10-06 16:17:06,894 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-06 16:17:06,937 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/test/semi1.wvr.c-witness.graphml [2021-10-06 16:17:06,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-06 16:17:06,940 INFO L168 Benchmark]: Toolchain (without parser) took 4693.94 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 124.7 MB in the beginning and 102.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2021-10-06 16:17:06,940 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 134.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 16:17:06,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.31 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 114.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-10-06 16:17:06,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.35 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:17:06,942 INFO L168 Benchmark]: Boogie Preprocessor took 24.40 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 111.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:17:06,943 INFO L168 Benchmark]: RCFGBuilder took 778.06 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 123.8 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 8.0 GB. [2021-10-06 16:17:06,944 INFO L168 Benchmark]: TraceAbstraction took 3531.04 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 123.1 MB in the beginning and 104.1 MB in the end (delta: 19.0 MB). Peak memory consumption was 56.7 MB. Max. memory is 8.0 GB. [2021-10-06 16:17:06,945 INFO L168 Benchmark]: Witness Printer took 46.00 ms. Allocated memory is still 188.7 MB. Free memory was 104.1 MB in the beginning and 102.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:17:06,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 134.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.31 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 114.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.35 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.40 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 111.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 778.06 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 123.8 MB in the end (delta: -12.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3531.04 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 123.1 MB in the beginning and 104.1 MB in the end (delta: 19.0 MB). Peak memory consumption was 56.7 MB. Max. memory is 8.0 GB. * Witness Printer took 46.00 ms. Allocated memory is still 188.7 MB. Free memory was 104.1 MB in the beginning and 102.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3001.2ms, 69 PlacesBefore, 24 PlacesAfterwards, 64 TransitionsBefore, 17 TransitionsAfterwards, 152 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 57 TotalNumberOfCompositions, 282 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 210, positive: 196, positive conditional: 0, positive unconditional: 196, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 99, positive: 95, positive conditional: 0, positive unconditional: 95, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 99, positive: 94, positive conditional: 0, positive unconditional: 94, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 22, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 210, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 99, unknown conditional: 0, unknown unconditional: 99] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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: 42]: integer overflow possible integer overflow possible We found a FailurePath: [L38] 0 int x, y; [L54] 0 pthread_t t1, t2; [L56] 0 x = __VERIFIER_nondet_int() [L57] 0 y = __VERIFIER_nondet_int() [L35] COND FALSE 0 !(!cond) [L61] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [x=2147483647, y=2147483647] [L42] 1 x++ VAL [x=2147483647, x++=2147483647, y=2147483647] - UnprovableResult [Line: 42]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 49]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 49]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 75 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 3312.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 7.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3070.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 5.9ms SsaConstructionTime, 47.7ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-06 16:17:07,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...