/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/popl20-more/nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 16:24:54,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 16:24:54,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 16:24:54,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-06 16:24:54,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-06 16:24:54,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-06 16:24:54,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-06 16:24:54,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-06 16:24:54,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-06 16:24:54,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-06 16:24:54,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-06 16:24:54,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-06 16:24:54,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 16:24:54,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 16:24:54,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 16:24:54,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 16:24:54,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 16:24:54,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 16:24:54,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 16:24:54,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 16:24:54,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 16:24:54,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 16:24:54,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 16:24:54,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 16:24:54,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-06 16:24:54,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-06 16:24:54,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-06 16:24:54,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-06 16:24:54,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-06 16:24:54,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-06 16:24:54,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 16:24:54,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 16:24:54,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 16:24:54,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 16:24:54,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 16:24:54,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 16:24:54,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 16:24:54,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 16:24:54,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 16:24:54,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 16:24:54,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 16:24:54,650 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 16:24:54,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 16:24:54,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 16:24:54,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 16:24:54,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 16:24:54,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 16:24:54,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 16:24:54,682 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 16:24:54,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 16:24:54,683 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 16:24:54,683 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 16:24:54,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 16:24:54,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 16:24:54,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 16:24:54,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-06 16:24:54,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 16:24:54,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-06 16:24:54,684 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-06 16:24:54,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 16:24:54,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-06 16:24:54,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 16:24:54,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-06 16:24:54,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 16:24:54,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 16:24:54,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 16:24:54,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:24:54,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 16:24:54,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 16:24:54,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-06 16:24:54,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-06 16:24:54,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-06 16:24:54,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-06 16:24:54,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 16:24:54,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 16:24:55,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 16:24:55,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 16:24:55,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 16:24:55,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 16:24:55,157 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 16:24:55,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more/nonblocking-counter-alt2.wvr.c [2021-10-06 16:24:55,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6badb65c/830d91dca5ae43f5b8a9ab980d90fc95/FLAGf2c39e364 [2021-10-06 16:24:55,989 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 16:24:55,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more/nonblocking-counter-alt2.wvr.c [2021-10-06 16:24:56,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6badb65c/830d91dca5ae43f5b8a9ab980d90fc95/FLAGf2c39e364 [2021-10-06 16:24:56,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6badb65c/830d91dca5ae43f5b8a9ab980d90fc95 [2021-10-06 16:24:56,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 16:24:56,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-06 16:24:56,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 16:24:56,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 16:24:56,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 16:24:56,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f52b4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56, skipping insertion in model container [2021-10-06 16:24:56,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 16:24:56,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 16:24:56,599 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/popl20-more/nonblocking-counter-alt2.wvr.c[1991,2004] [2021-10-06 16:24:56,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:24:56,612 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 16:24:56,635 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/popl20-more/nonblocking-counter-alt2.wvr.c[1991,2004] [2021-10-06 16:24:56,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:24:56,653 INFO L208 MainTranslator]: Completed translation [2021-10-06 16:24:56,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56 WrapperNode [2021-10-06 16:24:56,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 16:24:56,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 16:24:56,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 16:24:56,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 16:24:56,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 16:24:56,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 16:24:56,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 16:24:56,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 16:24:56,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 16:24:56,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 16:24:56,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 16:24:56,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 16:24:56,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (1/1) ... [2021-10-06 16:24:56,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:24:56,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:24:56,768 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 16:24:56,788 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 16:24:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 16:24:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 16:24:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 16:24:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 16:24:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-06 16:24:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 16:24:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-06 16:24:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 16:24:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 16:24:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 16:24:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 16:24:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-06 16:24:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 16:24:56,844 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 16:24:57,434 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 16:24:57,435 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 16:24:57,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:24:57 BoogieIcfgContainer [2021-10-06 16:24:57,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 16:24:57,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 16:24:57,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 16:24:57,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 16:24:57,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 04:24:56" (1/3) ... [2021-10-06 16:24:57,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d342f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:24:57, skipping insertion in model container [2021-10-06 16:24:57,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:24:56" (2/3) ... [2021-10-06 16:24:57,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d342f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:24:57, skipping insertion in model container [2021-10-06 16:24:57,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:24:57" (3/3) ... [2021-10-06 16:24:57,448 INFO L111 eAbstractionObserver]: Analyzing ICFG nonblocking-counter-alt2.wvr.c [2021-10-06 16:24:57,456 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-06 16:24:57,457 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 16:24:57,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-06 16:24:57,457 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 16:24:57,490 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,491 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,491 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,491 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,492 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,492 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,493 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,493 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,499 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,500 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,501 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,501 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,502 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,502 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,502 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,503 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,503 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,504 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,504 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,504 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,504 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,505 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,505 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,505 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,505 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,506 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,506 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,506 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,506 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,506 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,507 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,511 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,512 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,512 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,512 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,514 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,515 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,515 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,515 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:24:57,522 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 16:24:57,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 16:24:57,593 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 16:24:57,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-06 16:24:57,612 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 16:24:57,626 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 84 transitions, 184 flow [2021-10-06 16:24:57,630 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 84 transitions, 184 flow [2021-10-06 16:24:57,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 184 flow [2021-10-06 16:24:57,683 INFO L129 PetriNetUnfolder]: 6/82 cut-off events. [2021-10-06 16:24:57,684 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 16:24:57,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 6/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 89 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2021-10-06 16:24:57,691 INFO L116 LiptonReduction]: Number of co-enabled transitions 766 [2021-10-06 16:25:01,869 INFO L131 LiptonReduction]: Checked pairs total: 937 [2021-10-06 16:25:01,870 INFO L133 LiptonReduction]: Total number of compositions: 82 [2021-10-06 16:25:01,880 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-06 16:25:01,901 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 124 states, 100 states have (on average 2.94) internal successors, (294), 123 states have internal predecessors, (294), 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 16:25:01,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 100 states have (on average 2.94) internal successors, (294), 123 states have internal predecessors, (294), 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 16:25:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:25:01,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:01,911 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:25:01,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-06 16:25:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:01,918 INFO L82 PathProgramCache]: Analyzing trace with hash 11090295, now seen corresponding path program 1 times [2021-10-06 16:25:01,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:01,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834237066] [2021-10-06 16:25:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:01,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:02,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:02,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834237066] [2021-10-06 16:25:02,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834237066] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:25:02,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:25:02,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:25:02,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171205317] [2021-10-06 16:25:02,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:25:02,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:02,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:25:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:25:02,178 INFO L87 Difference]: Start difference. First operand has 124 states, 100 states have (on average 2.94) internal successors, (294), 123 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 16:25:02,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:02,255 INFO L93 Difference]: Finished difference Result 184 states and 448 transitions. [2021-10-06 16:25:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:25:02,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 16:25:02,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:02,273 INFO L225 Difference]: With dead ends: 184 [2021-10-06 16:25:02,273 INFO L226 Difference]: Without dead ends: 184 [2021-10-06 16:25:02,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:25:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-06 16:25:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 140. [2021-10-06 16:25:02,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 116 states have (on average 3.4051724137931036) internal successors, (395), 139 states have internal predecessors, (395), 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 16:25:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 395 transitions. [2021-10-06 16:25:02,334 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 395 transitions. Word has length 4 [2021-10-06 16:25:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:02,336 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 395 transitions. [2021-10-06 16:25:02,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 16:25:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 395 transitions. [2021-10-06 16:25:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:25:02,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:02,337 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:25:02,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-06 16:25:02,338 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-06 16:25:02,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:02,339 INFO L82 PathProgramCache]: Analyzing trace with hash 11090312, now seen corresponding path program 1 times [2021-10-06 16:25:02,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:02,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130881099] [2021-10-06 16:25:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:02,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:02,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:02,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130881099] [2021-10-06 16:25:02,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130881099] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:25:02,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:25:02,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:25:02,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337318718] [2021-10-06 16:25:02,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:25:02,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:25:02,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:25:02,408 INFO L87 Difference]: Start difference. First operand 140 states and 395 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 16:25:02,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:02,432 INFO L93 Difference]: Finished difference Result 188 states and 463 transitions. [2021-10-06 16:25:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:25:02,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 16:25:02,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:02,436 INFO L225 Difference]: With dead ends: 188 [2021-10-06 16:25:02,436 INFO L226 Difference]: Without dead ends: 188 [2021-10-06 16:25:02,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:25:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-06 16:25:02,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 146. [2021-10-06 16:25:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 122 states have (on average 3.2459016393442623) internal successors, (396), 145 states have internal predecessors, (396), 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 16:25:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 396 transitions. [2021-10-06 16:25:02,469 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 396 transitions. Word has length 4 [2021-10-06 16:25:02,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:02,470 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 396 transitions. [2021-10-06 16:25:02,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 16:25:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 396 transitions. [2021-10-06 16:25:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:25:02,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:02,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:25:02,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-06 16:25:02,474 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-06 16:25:02,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:02,474 INFO L82 PathProgramCache]: Analyzing trace with hash 11090256, now seen corresponding path program 1 times [2021-10-06 16:25:02,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:02,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451116001] [2021-10-06 16:25:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:02,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:25:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:25:02,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:25:02,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451116001] [2021-10-06 16:25:02,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451116001] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:25:02,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:25:02,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:25:02,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044174150] [2021-10-06 16:25:02,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:25:02,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:25:02,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:25:02,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:25:02,556 INFO L87 Difference]: Start difference. First operand 146 states and 396 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 16:25:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:25:02,590 INFO L93 Difference]: Finished difference Result 164 states and 403 transitions. [2021-10-06 16:25:02,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:25:02,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 16:25:02,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:25:02,593 INFO L225 Difference]: With dead ends: 164 [2021-10-06 16:25:02,593 INFO L226 Difference]: Without dead ends: 164 [2021-10-06 16:25:02,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:25:02,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-06 16:25:02,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 152. [2021-10-06 16:25:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 128 states have (on average 3.078125) internal successors, (394), 151 states have internal predecessors, (394), 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 16:25:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 394 transitions. [2021-10-06 16:25:02,610 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 394 transitions. Word has length 4 [2021-10-06 16:25:02,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:25:02,611 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 394 transitions. [2021-10-06 16:25:02,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 16:25:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 394 transitions. [2021-10-06 16:25:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 16:25:02,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:25:02,617 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 16:25:02,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-06 16:25:02,618 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-06 16:25:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:25:02,619 INFO L82 PathProgramCache]: Analyzing trace with hash 343800337, now seen corresponding path program 1 times [2021-10-06 16:25:02,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:25:02,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552774630] [2021-10-06 16:25:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:25:02,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:25:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 16:25:02,682 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-06 16:25:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 16:25:02,764 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-06 16:25:02,764 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-06 16:25:02,766 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 16:25:02,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 16:25:02,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:25:02,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-06 16:25:02,781 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 16:25:02,781 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 16:25:02,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 04:25:02 BasicIcfg [2021-10-06 16:25:02,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 16:25:02,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-06 16:25:02,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-06 16:25:02,804 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-06 16:25:02,805 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:24:57" (3/4) ... [2021-10-06 16:25:02,807 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-06 16:25:02,847 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-more/nonblocking-counter-alt2.wvr.c-witness.graphml [2021-10-06 16:25:02,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-06 16:25:02,850 INFO L168 Benchmark]: Toolchain (without parser) took 6482.56 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 138.9 MB in the beginning and 143.3 MB in the end (delta: -4.4 MB). Peak memory consumption was 29.9 MB. Max. memory is 8.0 GB. [2021-10-06 16:25:02,851 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 164.6 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 16:25:02,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.28 ms. Allocated memory is still 164.6 MB. Free memory was 138.5 MB in the beginning and 128.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-10-06 16:25:02,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.88 ms. Allocated memory is still 164.6 MB. Free memory was 128.6 MB in the beginning and 127.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:25:02,853 INFO L168 Benchmark]: Boogie Preprocessor took 29.20 ms. Allocated memory is still 164.6 MB. Free memory was 127.1 MB in the beginning and 125.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:25:02,853 INFO L168 Benchmark]: RCFGBuilder took 711.37 ms. Allocated memory is still 164.6 MB. Free memory was 125.9 MB in the beginning and 145.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. [2021-10-06 16:25:02,854 INFO L168 Benchmark]: TraceAbstraction took 5364.07 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 144.7 MB in the beginning and 145.4 MB in the end (delta: -650.3 kB). Peak memory consumption was 32.9 MB. Max. memory is 8.0 GB. [2021-10-06 16:25:02,855 INFO L168 Benchmark]: Witness Printer took 43.45 ms. Allocated memory is still 198.2 MB. Free memory was 145.4 MB in the beginning and 143.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:25:02,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 164.6 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 279.28 ms. Allocated memory is still 164.6 MB. Free memory was 138.5 MB in the beginning and 128.7 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 40.88 ms. Allocated memory is still 164.6 MB. Free memory was 128.6 MB in the beginning and 127.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.20 ms. Allocated memory is still 164.6 MB. Free memory was 127.1 MB in the beginning and 125.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 711.37 ms. Allocated memory is still 164.6 MB. Free memory was 125.9 MB in the beginning and 145.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5364.07 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 144.7 MB in the beginning and 145.4 MB in the end (delta: -650.3 kB). Peak memory consumption was 32.9 MB. Max. memory is 8.0 GB. * Witness Printer took 43.45 ms. Allocated memory is still 198.2 MB. Free memory was 145.4 MB in the beginning and 143.3 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: 4239.7ms, 85 PlacesBefore, 30 PlacesAfterwards, 84 TransitionsBefore, 25 TransitionsAfterwards, 766 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 82 TotalNumberOfCompositions, 937 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 920, positive: 917, positive conditional: 0, positive unconditional: 917, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 437, positive: 436, positive conditional: 0, positive unconditional: 436, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 437, positive: 430, positive conditional: 0, positive unconditional: 430, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 920, positive: 481, positive conditional: 0, positive unconditional: 481, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 437, unknown conditional: 0, unknown unconditional: 437] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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 M, counter, C; [L59] 0 pthread_t t1, t2; [L61] 0 C = __VERIFIER_nondet_int() [L62] 0 M = __VERIFIER_nondet_int() [L35] COND FALSE 0 !(!cond) [L66] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [C=-1073741825, counter=0, M=2] [L41] 1 int i=0; VAL [C=-1073741825, counter=0, i=0, M=2] [L41] COND TRUE 1 i