./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more/min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more/min-array-hom.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 175830e7bb0d1ccb01a813871cc63cf8b02bd112 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-03 12:32:38,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-03 12:32:38,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-03 12:32:38,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-03 12:32:38,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-03 12:32:38,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-03 12:32:38,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-03 12:32:38,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-03 12:32:38,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-03 12:32:38,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-03 12:32:38,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-03 12:32:38,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-03 12:32:38,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-03 12:32:38,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-03 12:32:38,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-03 12:32:38,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-03 12:32:38,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-03 12:32:38,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-03 12:32:38,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-03 12:32:38,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-03 12:32:38,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-03 12:32:38,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-03 12:32:38,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-03 12:32:38,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-03 12:32:38,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-03 12:32:38,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-03 12:32:38,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-03 12:32:38,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-03 12:32:38,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-03 12:32:38,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-03 12:32:38,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-03 12:32:38,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-03 12:32:38,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-03 12:32:38,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-03 12:32:38,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-03 12:32:38,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-03 12:32:38,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-03 12:32:38,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-03 12:32:38,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-03 12:32:38,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-03 12:32:38,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-03 12:32:38,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-03 12:32:39,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-03 12:32:39,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-03 12:32:39,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-03 12:32:39,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-03 12:32:39,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-03 12:32:39,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-03 12:32:39,010 INFO L138 SettingsManager]: * Use SBE=true [2021-10-03 12:32:39,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-03 12:32:39,011 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-03 12:32:39,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-03 12:32:39,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-03 12:32:39,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-03 12:32:39,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-03 12:32:39,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-03 12:32:39,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-03 12:32:39,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-03 12:32:39,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-03 12:32:39,014 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-03 12:32:39,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-03 12:32:39,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-03 12:32:39,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-03 12:32:39,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-03 12:32:39,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 12:32:39,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-03 12:32:39,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-03 12:32:39,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-03 12:32:39,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-03 12:32:39,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-03 12:32:39,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-03 12:32:39,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-03 12:32:39,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 175830e7bb0d1ccb01a813871cc63cf8b02bd112 [2021-10-03 12:32:39,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-03 12:32:39,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-03 12:32:39,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-03 12:32:39,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-03 12:32:39,501 INFO L275 PluginConnector]: CDTParser initialized [2021-10-03 12:32:39,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more/min-array-hom.wvr.c [2021-10-03 12:32:39,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50215da69/44d6c43c327846f7b971aa5de4732a70/FLAGcf0b0d81b [2021-10-03 12:32:40,196 INFO L306 CDTParser]: Found 1 translation units. [2021-10-03 12:32:40,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more/min-array-hom.wvr.c [2021-10-03 12:32:40,197 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 12:32:40,197 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 12:32:40,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50215da69/44d6c43c327846f7b971aa5de4732a70/FLAGcf0b0d81b [2021-10-03 12:32:40,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50215da69/44d6c43c327846f7b971aa5de4732a70 [2021-10-03 12:32:40,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-03 12:32:40,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-03 12:32:40,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-03 12:32:40,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-03 12:32:40,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-03 12:32:40,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f16788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40, skipping insertion in model container [2021-10-03 12:32:40,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-03 12:32:40,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-03 12:32:40,690 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 12:32:40,741 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/min-array-hom.wvr.c[1385,1398] [2021-10-03 12:32:40,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 12:32:40,759 INFO L203 MainTranslator]: Completed pre-run [2021-10-03 12:32:40,769 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 12:32:40,781 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/min-array-hom.wvr.c[1385,1398] [2021-10-03 12:32:40,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 12:32:40,800 INFO L208 MainTranslator]: Completed translation [2021-10-03 12:32:40,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40 WrapperNode [2021-10-03 12:32:40,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-03 12:32:40,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-03 12:32:40,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-03 12:32:40,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-03 12:32:40,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-03 12:32:40,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-03 12:32:40,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-03 12:32:40,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-03 12:32:40,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-03 12:32:40,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-03 12:32:40,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-03 12:32:40,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-03 12:32:40,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (1/1) ... [2021-10-03 12:32:40,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 12:32:40,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:32:40,927 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) [2021-10-03 12:32:40,942 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 [2021-10-03 12:32:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-03 12:32:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-03 12:32:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-03 12:32:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-03 12:32:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-03 12:32:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-03 12:32:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-03 12:32:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-03 12:32:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-03 12:32:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-03 12:32:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-03 12:32:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-03 12:32:40,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-03 12:32:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-03 12:32:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-03 12:32:40,987 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-03 12:32:41,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-03 12:32:41,616 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-03 12:32:41,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:32:41 BoogieIcfgContainer [2021-10-03 12:32:41,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-03 12:32:41,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-03 12:32:41,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-03 12:32:41,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-03 12:32:41,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 12:32:40" (1/3) ... [2021-10-03 12:32:41,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8ef96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 12:32:41, skipping insertion in model container [2021-10-03 12:32:41,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:32:40" (2/3) ... [2021-10-03 12:32:41,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8ef96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 12:32:41, skipping insertion in model container [2021-10-03 12:32:41,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:32:41" (3/3) ... [2021-10-03 12:32:41,637 INFO L111 eAbstractionObserver]: Analyzing ICFG min-array-hom.wvr.c [2021-10-03 12:32:41,644 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-03 12:32:41,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-03 12:32:41,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-03 12:32:41,645 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-03 12:32:41,711 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,712 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,712 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,713 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,713 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,715 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,715 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,717 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,717 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,718 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,718 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,719 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,719 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,719 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,720 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,720 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,721 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,721 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,721 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,722 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,722 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,722 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,723 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,724 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,724 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,725 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,726 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,726 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,727 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,728 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,728 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,729 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,729 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,729 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,730 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,730 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,730 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,730 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,731 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,731 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,731 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,732 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,733 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,734 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,735 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,735 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,735 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,736 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,736 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,736 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,736 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,736 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,736 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,737 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,737 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,737 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,737 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,737 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,738 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,738 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,738 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,738 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,738 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,739 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,739 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,742 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,742 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,749 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,750 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,756 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,758 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,758 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,765 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,765 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,765 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,766 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,766 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,767 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 12:32:41,785 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-03 12:32:41,859 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-03 12:32:41,881 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 [2021-10-03 12:32:41,882 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-03 12:32:41,913 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-03 12:32:41,925 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 129 transitions, 282 flow [2021-10-03 12:32:41,928 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 129 transitions, 282 flow [2021-10-03 12:32:41,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 129 transitions, 282 flow [2021-10-03 12:32:41,994 INFO L129 PetriNetUnfolder]: 12/126 cut-off events. [2021-10-03 12:32:41,995 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-03 12:32:42,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 12/126 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2021-10-03 12:32:42,007 INFO L116 LiptonReduction]: Number of co-enabled transitions 1134 [2021-10-03 12:32:46,448 INFO L131 LiptonReduction]: Checked pairs total: 1277 [2021-10-03 12:32:46,448 INFO L133 LiptonReduction]: Total number of compositions: 120 [2021-10-03 12:32:46,462 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 28 transitions, 80 flow [2021-10-03 12:32:46,498 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 107 states, 106 states have (on average 3.0849056603773586) internal successors, (327), 106 states have internal predecessors, (327), 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) [2021-10-03 12:32:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 106 states have (on average 3.0849056603773586) internal successors, (327), 106 states have internal predecessors, (327), 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) [2021-10-03 12:32:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-03 12:32:46,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:32:46,511 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:32:46,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:32:46,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:32:46,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1025249100, now seen corresponding path program 1 times [2021-10-03 12:32:46,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:32:46,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359181322] [2021-10-03 12:32:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:32:46,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:32:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:32:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:32:46,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:32:46,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359181322] [2021-10-03 12:32:46,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359181322] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:32:46,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:32:46,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-03 12:32:46,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632694466] [2021-10-03 12:32:46,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-03 12:32:46,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:32:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-03 12:32:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:32:46,939 INFO L87 Difference]: Start difference. First operand has 107 states, 106 states have (on average 3.0849056603773586) internal successors, (327), 106 states have internal predecessors, (327), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2021-10-03 12:32:46,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:32:46,984 INFO L93 Difference]: Finished difference Result 204 states and 632 transitions. [2021-10-03 12:32:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-03 12:32:46,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2021-10-03 12:32:46,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:32:47,000 INFO L225 Difference]: With dead ends: 204 [2021-10-03 12:32:47,001 INFO L226 Difference]: Without dead ends: 197 [2021-10-03 12:32:47,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-03 12:32:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-03 12:32:47,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-10-03 12:32:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 3.13265306122449) internal successors, (614), 196 states have internal predecessors, (614), 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) [2021-10-03 12:32:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 614 transitions. [2021-10-03 12:32:47,071 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 614 transitions. Word has length 20 [2021-10-03 12:32:47,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:32:47,072 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 614 transitions. [2021-10-03 12:32:47,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2021-10-03 12:32:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 614 transitions. [2021-10-03 12:32:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-03 12:32:47,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:32:47,076 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:32:47,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-03 12:32:47,077 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:32:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:32:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1719282773, now seen corresponding path program 1 times [2021-10-03 12:32:47,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:32:47,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784008768] [2021-10-03 12:32:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:32:47,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:32:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:32:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 12:32:47,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:32:47,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784008768] [2021-10-03 12:32:47,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784008768] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 12:32:47,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 12:32:47,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-03 12:32:47,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137195597] [2021-10-03 12:32:47,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-03 12:32:47,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:32:47,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-03 12:32:47,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-03 12:32:47,253 INFO L87 Difference]: Start difference. First operand 197 states and 614 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-03 12:32:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:32:47,308 INFO L93 Difference]: Finished difference Result 198 states and 615 transitions. [2021-10-03 12:32:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-03 12:32:47,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2021-10-03 12:32:47,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:32:47,315 INFO L225 Difference]: With dead ends: 198 [2021-10-03 12:32:47,317 INFO L226 Difference]: Without dead ends: 198 [2021-10-03 12:32:47,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-03 12:32:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-03 12:32:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-10-03 12:32:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 3.1218274111675126) internal successors, (615), 197 states have internal predecessors, (615), 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) [2021-10-03 12:32:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 615 transitions. [2021-10-03 12:32:47,360 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 615 transitions. Word has length 21 [2021-10-03 12:32:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:32:47,361 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 615 transitions. [2021-10-03 12:32:47,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-03 12:32:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 615 transitions. [2021-10-03 12:32:47,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-03 12:32:47,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:32:47,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:32:47,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-03 12:32:47,368 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:32:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:32:47,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1621834139, now seen corresponding path program 1 times [2021-10-03 12:32:47,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:32:47,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687477742] [2021-10-03 12:32:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:32:47,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:32:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:32:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:32:47,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:32:47,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687477742] [2021-10-03 12:32:47,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687477742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:32:47,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929815970] [2021-10-03 12:32:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:32:47,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:32:47,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:32:47,508 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:32:47,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-03 12:32:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:32:47,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-03 12:32:47,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:32:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:32:47,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929815970] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:32:47,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:32:47,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-03 12:32:47,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968315694] [2021-10-03 12:32:47,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-03 12:32:47,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:32:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-03 12:32:47,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-03 12:32:47,726 INFO L87 Difference]: Start difference. First operand 198 states and 615 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-03 12:32:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:32:47,792 INFO L93 Difference]: Finished difference Result 174 states and 549 transitions. [2021-10-03 12:32:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-03 12:32:47,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 22 [2021-10-03 12:32:47,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:32:47,795 INFO L225 Difference]: With dead ends: 174 [2021-10-03 12:32:47,795 INFO L226 Difference]: Without dead ends: 174 [2021-10-03 12:32:47,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-03 12:32:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-03 12:32:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 134. [2021-10-03 12:32:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 3.1052631578947367) internal successors, (413), 133 states have internal predecessors, (413), 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) [2021-10-03 12:32:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 413 transitions. [2021-10-03 12:32:47,807 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 413 transitions. Word has length 22 [2021-10-03 12:32:47,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:32:47,807 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 413 transitions. [2021-10-03 12:32:47,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-03 12:32:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 413 transitions. [2021-10-03 12:32:47,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-03 12:32:47,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:32:47,810 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:32:47,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-03 12:32:48,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:32:48,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:32:48,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:32:48,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1848380950, now seen corresponding path program 1 times [2021-10-03 12:32:48,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:32:48,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241484679] [2021-10-03 12:32:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:32:48,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:32:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:32:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:32:48,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 12:32:48,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241484679] [2021-10-03 12:32:48,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241484679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:32:48,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407655037] [2021-10-03 12:32:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:32:48,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:32:48,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 12:32:48,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-03 12:32:48,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-03 12:32:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 12:32:48,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-03 12:32:48,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-03 12:32:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-03 12:32:48,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407655037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-03 12:32:48,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-03 12:32:48,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-03 12:32:48,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956458249] [2021-10-03 12:32:48,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-03 12:32:48,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 12:32:48,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-03 12:32:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-03 12:32:48,420 INFO L87 Difference]: Start difference. First operand 134 states and 413 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-10-03 12:32:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 12:32:48,725 INFO L93 Difference]: Finished difference Result 284 states and 885 transitions. [2021-10-03 12:32:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-03 12:32:48,726 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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 22 [2021-10-03 12:32:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 12:32:48,730 INFO L225 Difference]: With dead ends: 284 [2021-10-03 12:32:48,730 INFO L226 Difference]: Without dead ends: 284 [2021-10-03 12:32:48,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 245.9ms TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-10-03 12:32:48,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-03 12:32:48,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 166. [2021-10-03 12:32:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 3.1454545454545455) internal successors, (519), 165 states have internal predecessors, (519), 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) [2021-10-03 12:32:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 519 transitions. [2021-10-03 12:32:48,745 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 519 transitions. Word has length 22 [2021-10-03 12:32:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 12:32:48,746 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 519 transitions. [2021-10-03 12:32:48,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-10-03 12:32:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 519 transitions. [2021-10-03 12:32:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-03 12:32:48,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 12:32:48,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 12:32:48,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-03 12:32:48,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-03 12:32:48,962 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-03 12:32:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 12:32:48,963 INFO L82 PathProgramCache]: Analyzing trace with hash 710632897, now seen corresponding path program 1 times [2021-10-03 12:32:48,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 12:32:48,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29603979] [2021-10-03 12:32:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 12:32:48,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 12:32:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-03 12:32:49,060 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-03 12:32:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-03 12:32:49,189 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-03 12:32:49,189 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-03 12:32:49,191 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-03 12:32:49,193 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-03 12:32:49,193 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-03 12:32:49,193 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-03 12:32:49,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-03 12:32:49,200 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-03 12:32:49,201 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-03 12:32:49,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 12:32:49 BasicIcfg [2021-10-03 12:32:49,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-03 12:32:49,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-03 12:32:49,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-03 12:32:49,266 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-03 12:32:49,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:32:41" (3/4) ... [2021-10-03 12:32:49,269 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-03 12:32:49,343 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-03 12:32:49,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-03 12:32:49,346 INFO L168 Benchmark]: Toolchain (without parser) took 8813.11 ms. Allocated memory was 48.2 MB in the beginning and 88.1 MB in the end (delta: 39.8 MB). Free memory was 24.7 MB in the beginning and 56.8 MB in the end (delta: -32.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-10-03 12:32:49,346 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 48.2 MB. Free memory was 32.1 MB in the beginning and 32.0 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 12:32:49,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.97 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 25.0 MB in the end (delta: -562.1 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-03 12:32:49,348 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.44 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 23.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-03 12:32:49,349 INFO L168 Benchmark]: Boogie Preprocessor took 34.56 ms. Allocated memory is still 48.2 MB. Free memory was 23.3 MB in the beginning and 21.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 12:32:49,351 INFO L168 Benchmark]: RCFGBuilder took 742.31 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.8 MB in the beginning and 36.9 MB in the end (delta: -15.2 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2021-10-03 12:32:49,352 INFO L168 Benchmark]: TraceAbstraction took 7639.21 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 36.4 MB in the beginning and 63.1 MB in the end (delta: -26.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. [2021-10-03 12:32:49,356 INFO L168 Benchmark]: Witness Printer took 77.88 ms. Allocated memory is still 88.1 MB. Free memory was 63.1 MB in the beginning and 56.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-03 12:32:49,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 48.2 MB. Free memory was 32.1 MB in the beginning and 32.0 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.97 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 25.0 MB in the end (delta: -562.1 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.44 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 23.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.56 ms. Allocated memory is still 48.2 MB. Free memory was 23.3 MB in the beginning and 21.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 742.31 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.8 MB in the beginning and 36.9 MB in the end (delta: -15.2 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7639.21 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 36.4 MB in the beginning and 63.1 MB in the end (delta: -26.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. * Witness Printer took 77.88 ms. Allocated memory is still 88.1 MB. Free memory was 63.1 MB in the beginning and 56.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4520.2ms, 127 PlacesBefore, 34 PlacesAfterwards, 129 TransitionsBefore, 28 TransitionsAfterwards, 1134 CoEnabledTransitionPairs, 6 FixpointIterations, 68 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 120 TotalNumberOfCompositions, 1277 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1168, positive: 1140, positive conditional: 0, positive unconditional: 1140, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 714, positive: 704, positive conditional: 0, positive unconditional: 704, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 714, positive: 704, positive conditional: 0, positive unconditional: 704, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1168, positive: 436, positive conditional: 0, positive unconditional: 436, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 714, unknown conditional: 0, unknown unconditional: 714] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, 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: 70]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] 0 int* A; [L17] 0 int min1, min2, min3, M, N; [L52] 0 pthread_t t1, t2, t3; [L55] 0 M = __VERIFIER_nondet_int() [L56] 0 N = __VERIFIER_nondet_int() [L13] COND FALSE 0 !(!cond) [L76] 0 int* arr = (int*)malloc(sizeof(int) * size); [L77] 0 int i = 0; VAL [A={0:0}, M=0, min1=0, min2=0, min3=0, N=1] [L77] COND TRUE 0 i < size [L78] 0 arr[i] = __VERIFIER_nondet_int() [L77] 0 i++ VAL [A={0:0}, M=0, min1=0, min2=0, min3=0, N=1] [L77] COND FALSE 0 !(i < size) [L80] 0 return arr; [L57] 0 A = create_fresh_int_array(N) [L13] COND FALSE 0 !(!cond) [L62] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [A={-4:0}, M=0, min1=0, min2=0, min3=0, N=1] [L22] 1 int i=0; VAL [A={-4:0}, i=0, M=0, min1=0, min2=0, min3=0, N=1] [L63] FCALL, FORK 0 pthread_create(&t2, NULL, thread2, NULL) VAL [A={-4:0}, i=0, M=0, min1=0, min2=0, min3=0, N=1] [L32] 2 int i=0; VAL [A={-4:0}, i=0, i=0, M=0, min1=0, min2=0, min3=0, N=1] [L32] COND FALSE 2 !(i A[i] [L25] EXPR 1 A[i] [L25] 1 min1 = A[i] [L22] 1 i++ VAL [A={-4:0}, A[i]=7, i=1, i=0, i=0, M=0, min1=-5, min2=0, min3=0, N=1] [L22] COND FALSE 1 !(i A[i] [L45] EXPR 3 A[i] [L45] 3 min3 = A[i] [L42] 3 i++ VAL [A={-4:0}, A[i]=7, A[i]=6, i=1, i=1, i=0, M=0, min1=-5, min2=0, min3=-5, N=1] [L42] COND FALSE 3 !(i