./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more/min-le-max.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-le-max.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 66f660a8d05c0582ec81f96f2004dcce9f99ece7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-04 19:17:32,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-04 19:17:32,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-04 19:17:32,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-04 19:17:32,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-04 19:17:32,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-04 19:17:32,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-04 19:17:32,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-04 19:17:32,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-04 19:17:32,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-04 19:17:32,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-04 19:17:32,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-04 19:17:32,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-04 19:17:32,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-04 19:17:32,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-04 19:17:32,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-04 19:17:32,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-04 19:17:32,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-04 19:17:32,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-04 19:17:32,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-04 19:17:32,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-04 19:17:32,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-04 19:17:32,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-04 19:17:32,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-04 19:17:32,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-04 19:17:32,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-04 19:17:32,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-04 19:17:32,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-04 19:17:32,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-04 19:17:32,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-04 19:17:32,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-04 19:17:32,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-04 19:17:32,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-04 19:17:32,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-04 19:17:32,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-04 19:17:32,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-04 19:17:32,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-04 19:17:32,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-04 19:17:32,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-04 19:17:32,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-04 19:17:32,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-04 19:17:32,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-04 19:17:32,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-04 19:17:32,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-04 19:17:32,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-04 19:17:32,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-04 19:17:32,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-04 19:17:32,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-04 19:17:32,816 INFO L138 SettingsManager]: * Use SBE=true [2021-10-04 19:17:32,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-04 19:17:32,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-04 19:17:32,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-04 19:17:32,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-04 19:17:32,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-04 19:17:32,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-04 19:17:32,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-04 19:17:32,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-04 19:17:32,820 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-04 19:17:32,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-04 19:17:32,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-04 19:17:32,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-04 19:17:32,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-04 19:17:32,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-04 19:17:32,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-04 19:17:32,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 19:17:32,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-04 19:17:32,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-04 19:17:32,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-04 19:17:32,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-04 19:17:32,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-04 19:17:32,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-04 19:17:32,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-04 19:17:32,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66f660a8d05c0582ec81f96f2004dcce9f99ece7 [2021-10-04 19:17:33,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-04 19:17:33,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-04 19:17:33,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-04 19:17:33,243 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-04 19:17:33,246 INFO L275 PluginConnector]: CDTParser initialized [2021-10-04 19:17:33,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more/min-le-max.wvr.c [2021-10-04 19:17:33,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deb4b6c4d/8e327667594542f9929ef5473616744b/FLAG06e31506b [2021-10-04 19:17:34,036 INFO L306 CDTParser]: Found 1 translation units. [2021-10-04 19:17:34,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more/min-le-max.wvr.c [2021-10-04 19:17:34,037 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 19:17:34,037 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 19:17:34,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deb4b6c4d/8e327667594542f9929ef5473616744b/FLAG06e31506b [2021-10-04 19:17:34,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deb4b6c4d/8e327667594542f9929ef5473616744b [2021-10-04 19:17:34,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-04 19:17:34,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-04 19:17:34,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-04 19:17:34,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-04 19:17:34,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-04 19:17:34,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1799a4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34, skipping insertion in model container [2021-10-04 19:17:34,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-04 19:17:34,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-04 19:17:34,569 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 19:17:34,624 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-le-max.wvr.c[1232,1245] [2021-10-04 19:17:34,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 19:17:34,645 INFO L203 MainTranslator]: Completed pre-run [2021-10-04 19:17:34,658 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 19:17:34,671 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-le-max.wvr.c[1232,1245] [2021-10-04 19:17:34,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 19:17:34,693 INFO L208 MainTranslator]: Completed translation [2021-10-04 19:17:34,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34 WrapperNode [2021-10-04 19:17:34,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-04 19:17:34,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-04 19:17:34,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-04 19:17:34,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-04 19:17:34,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-04 19:17:34,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-04 19:17:34,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-04 19:17:34,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-04 19:17:34,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-04 19:17:34,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-04 19:17:34,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-04 19:17:34,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-04 19:17:34,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (1/1) ... [2021-10-04 19:17:34,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 19:17:34,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-04 19:17:34,833 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) [2021-10-04 19:17:34,851 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 [2021-10-04 19:17:34,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-04 19:17:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-04 19:17:34,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-04 19:17:34,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-04 19:17:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-04 19:17:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-04 19:17:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-04 19:17:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-04 19:17:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-04 19:17:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-04 19:17:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-04 19:17:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-04 19:17:34,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-04 19:17:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-04 19:17:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-04 19:17:34,923 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-04 19:17:35,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-04 19:17:35,555 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-04 19:17:35,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 07:17:35 BoogieIcfgContainer [2021-10-04 19:17:35,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-04 19:17:35,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-04 19:17:35,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-04 19:17:35,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-04 19:17:35,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.10 07:17:34" (1/3) ... [2021-10-04 19:17:35,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a097de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 07:17:35, skipping insertion in model container [2021-10-04 19:17:35,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 07:17:34" (2/3) ... [2021-10-04 19:17:35,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a097de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 07:17:35, skipping insertion in model container [2021-10-04 19:17:35,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 07:17:35" (3/3) ... [2021-10-04 19:17:35,576 INFO L111 eAbstractionObserver]: Analyzing ICFG min-le-max.wvr.c [2021-10-04 19:17:35,583 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-04 19:17:35,584 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-04 19:17:35,584 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-04 19:17:35,584 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-04 19:17:35,621 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,622 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,623 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,623 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,623 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,624 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,624 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,625 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,632 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,633 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,634 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,634 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,635 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,635 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,635 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,635 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,637 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,637 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,637 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,638 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,638 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,638 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,639 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,640 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,640 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,641 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,641 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,641 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,642 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,642 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,643 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,643 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,647 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,650 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,651 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,651 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,652 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,652 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,652 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,654 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,655 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,655 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,656 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 19:17:35,665 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-04 19:17:35,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-04 19:17:35,736 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 [2021-10-04 19:17:35,737 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-04 19:17:35,760 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-04 19:17:35,773 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 119 transitions, 262 flow [2021-10-04 19:17:35,777 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 119 transitions, 262 flow [2021-10-04 19:17:35,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 119 transitions, 262 flow [2021-10-04 19:17:35,878 INFO L129 PetriNetUnfolder]: 9/116 cut-off events. [2021-10-04 19:17:35,880 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-04 19:17:35,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 116 events. 9/116 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-10-04 19:17:35,893 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-10-04 19:17:39,984 INFO L131 LiptonReduction]: Checked pairs total: 1034 [2021-10-04 19:17:39,984 INFO L133 LiptonReduction]: Total number of compositions: 107 [2021-10-04 19:17:39,998 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 76 flow [2021-10-04 19:17:40,016 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 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) [2021-10-04 19:17:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 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) [2021-10-04 19:17:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-04 19:17:40,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 19:17:40,030 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 19:17:40,030 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 19:17:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 19:17:40,037 INFO L82 PathProgramCache]: Analyzing trace with hash 276187183, now seen corresponding path program 1 times [2021-10-04 19:17:40,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 19:17:40,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634687956] [2021-10-04 19:17:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 19:17:40,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 19:17:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 19:17:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 19:17:40,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 19:17:40,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634687956] [2021-10-04 19:17:40,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634687956] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 19:17:40,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 19:17:40,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 19:17:40,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900078992] [2021-10-04 19:17:40,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-04 19:17:40,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 19:17:40,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-04 19:17:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-04 19:17:40,457 INFO L87 Difference]: Start difference. First operand has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 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 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-10-04 19:17:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 19:17:40,509 INFO L93 Difference]: Finished difference Result 101 states and 274 transitions. [2021-10-04 19:17:40,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-04 19:17:40,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2021-10-04 19:17:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 19:17:40,525 INFO L225 Difference]: With dead ends: 101 [2021-10-04 19:17:40,525 INFO L226 Difference]: Without dead ends: 101 [2021-10-04 19:17:40,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-04 19:17:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-04 19:17:40,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-10-04 19:17:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.74) internal successors, (274), 100 states have internal predecessors, (274), 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) [2021-10-04 19:17:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 274 transitions. [2021-10-04 19:17:40,582 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 274 transitions. Word has length 19 [2021-10-04 19:17:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 19:17:40,582 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 274 transitions. [2021-10-04 19:17:40,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-10-04 19:17:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 274 transitions. [2021-10-04 19:17:40,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-04 19:17:40,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 19:17:40,588 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] [2021-10-04 19:17:40,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-04 19:17:40,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 19:17:40,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 19:17:40,591 INFO L82 PathProgramCache]: Analyzing trace with hash 535380769, now seen corresponding path program 1 times [2021-10-04 19:17:40,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 19:17:40,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926601030] [2021-10-04 19:17:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 19:17:40,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 19:17:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 19:17:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 19:17:40,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 19:17:40,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926601030] [2021-10-04 19:17:40,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926601030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 19:17:40,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 19:17:40,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 19:17:40,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46339277] [2021-10-04 19:17:40,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 19:17:40,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 19:17:40,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 19:17:40,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-04 19:17:40,754 INFO L87 Difference]: Start difference. First operand 101 states and 274 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 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) [2021-10-04 19:17:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 19:17:40,782 INFO L93 Difference]: Finished difference Result 102 states and 275 transitions. [2021-10-04 19:17:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-04 19:17:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 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 [2021-10-04 19:17:40,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 19:17:40,785 INFO L225 Difference]: With dead ends: 102 [2021-10-04 19:17:40,786 INFO L226 Difference]: Without dead ends: 102 [2021-10-04 19:17:40,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-04 19:17:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-04 19:17:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-04 19:17:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.722772277227723) internal successors, (275), 101 states have internal predecessors, (275), 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) [2021-10-04 19:17:40,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 275 transitions. [2021-10-04 19:17:40,803 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 275 transitions. Word has length 20 [2021-10-04 19:17:40,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 19:17:40,803 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 275 transitions. [2021-10-04 19:17:40,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 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) [2021-10-04 19:17:40,804 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 275 transitions. [2021-10-04 19:17:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-04 19:17:40,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 19:17:40,806 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] [2021-10-04 19:17:40,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-04 19:17:40,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 19:17:40,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 19:17:40,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1931465723, now seen corresponding path program 1 times [2021-10-04 19:17:40,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 19:17:40,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779809003] [2021-10-04 19:17:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 19:17:40,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 19:17:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 19:17:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-04 19:17:40,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 19:17:40,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779809003] [2021-10-04 19:17:40,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779809003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-04 19:17:40,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450505288] [2021-10-04 19:17:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 19:17:40,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-04 19:17:40,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-04 19:17:40,924 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) [2021-10-04 19:17:40,934 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 [2021-10-04 19:17:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 19:17:41,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-04 19:17:41,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-04 19:17:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-04 19:17:41,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450505288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-04 19:17:41,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-04 19:17:41,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-04 19:17:41,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847514494] [2021-10-04 19:17:41,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-04 19:17:41,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 19:17:41,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-04 19:17:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-04 19:17:41,221 INFO L87 Difference]: Start difference. First operand 102 states and 275 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-10-04 19:17:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 19:17:41,323 INFO L93 Difference]: Finished difference Result 130 states and 357 transitions. [2021-10-04 19:17:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 19:17:41,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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 [2021-10-04 19:17:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 19:17:41,326 INFO L225 Difference]: With dead ends: 130 [2021-10-04 19:17:41,326 INFO L226 Difference]: Without dead ends: 130 [2021-10-04 19:17:41,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 81.1ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-04 19:17:41,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-04 19:17:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-04 19:17:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.7674418604651163) internal successors, (357), 129 states have internal predecessors, (357), 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) [2021-10-04 19:17:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 357 transitions. [2021-10-04 19:17:41,343 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 357 transitions. Word has length 21 [2021-10-04 19:17:41,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 19:17:41,344 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 357 transitions. [2021-10-04 19:17:41,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-10-04 19:17:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 357 transitions. [2021-10-04 19:17:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-04 19:17:41,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 19:17:41,348 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] [2021-10-04 19:17:41,390 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 [2021-10-04 19:17:41,561 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 [2021-10-04 19:17:41,562 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 19:17:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 19:17:41,564 INFO L82 PathProgramCache]: Analyzing trace with hash 794319912, now seen corresponding path program 1 times [2021-10-04 19:17:41,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 19:17:41,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619156815] [2021-10-04 19:17:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 19:17:41,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 19:17:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 19:17:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-04 19:17:41,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 19:17:41,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619156815] [2021-10-04 19:17:41,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619156815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-04 19:17:41,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012274491] [2021-10-04 19:17:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 19:17:41,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-04 19:17:41,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-04 19:17:41,763 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) [2021-10-04 19:17:41,785 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 [2021-10-04 19:17:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 19:17:41,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-04 19:17:41,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-04 19:17:41,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-04 19:17:42,064 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-04 19:17:42,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-10-04 19:17:42,179 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-04 19:17:42,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-10-04 19:17:42,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-10-04 19:17:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-04 19:17:42,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012274491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-04 19:17:42,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-04 19:17:42,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 10 [2021-10-04 19:17:42,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771366316] [2021-10-04 19:17:42,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-04 19:17:42,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 19:17:42,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-04 19:17:42,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-04 19:17:42,274 INFO L87 Difference]: Start difference. First operand 130 states and 357 transitions. Second operand has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 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) [2021-10-04 19:17:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 19:17:42,497 INFO L93 Difference]: Finished difference Result 165 states and 456 transitions. [2021-10-04 19:17:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-04 19:17:42,500 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 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 [2021-10-04 19:17:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 19:17:42,501 INFO L225 Difference]: With dead ends: 165 [2021-10-04 19:17:42,501 INFO L226 Difference]: Without dead ends: 0 [2021-10-04 19:17:42,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 162.5ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-10-04 19:17:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-04 19:17:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-04 19:17:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 19:17:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-04 19:17:42,504 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-04 19:17:42,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 19:17:42,504 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-04 19:17:42,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 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) [2021-10-04 19:17:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-04 19:17:42,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-04 19:17:42,513 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-04 19:17:42,514 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-04 19:17:42,515 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-04 19:17:42,515 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-04 19:17:42,562 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 [2021-10-04 19:17:42,731 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 [2021-10-04 19:17:42,737 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-04 19:17:42,737 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-04 19:17:42,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 07:17:42 BasicIcfg [2021-10-04 19:17:42,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-04 19:17:42,740 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-04 19:17:42,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-04 19:17:42,741 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-04 19:17:42,741 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 07:17:35" (3/4) ... [2021-10-04 19:17:42,745 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-04 19:17:42,753 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-04 19:17:42,753 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-04 19:17:42,753 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-04 19:17:42,763 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-04 19:17:42,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-04 19:17:42,765 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-04 19:17:42,840 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-04 19:17:42,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-04 19:17:42,845 INFO L168 Benchmark]: Toolchain (without parser) took 8450.44 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 30.7 MB in the beginning and 36.0 MB in the end (delta: -5.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2021-10-04 19:17:42,845 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 44.0 MB. Free memory was 21.2 MB in the beginning and 21.1 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-04 19:17:42,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.86 ms. Allocated memory is still 54.5 MB. Free memory was 30.5 MB in the beginning and 33.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-04 19:17:42,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.73 ms. Allocated memory is still 54.5 MB. Free memory was 33.3 MB in the beginning and 31.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-04 19:17:42,849 INFO L168 Benchmark]: Boogie Preprocessor took 38.68 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 30.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 19:17:42,850 INFO L168 Benchmark]: RCFGBuilder took 775.99 ms. Allocated memory is still 54.5 MB. Free memory was 30.1 MB in the beginning and 26.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-04 19:17:42,851 INFO L168 Benchmark]: TraceAbstraction took 7176.29 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 26.3 MB in the beginning and 39.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2021-10-04 19:17:42,852 INFO L168 Benchmark]: Witness Printer took 102.94 ms. Allocated memory is still 81.8 MB. Free memory was 39.3 MB in the beginning and 36.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 19:17:42,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 44.0 MB. Free memory was 21.2 MB in the beginning and 21.1 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.86 ms. Allocated memory is still 54.5 MB. Free memory was 30.5 MB in the beginning and 33.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.73 ms. Allocated memory is still 54.5 MB. Free memory was 33.3 MB in the beginning and 31.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.68 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 30.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 775.99 ms. Allocated memory is still 54.5 MB. Free memory was 30.1 MB in the beginning and 26.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7176.29 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 26.3 MB in the beginning and 39.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * Witness Printer took 102.94 ms. Allocated memory is still 81.8 MB. Free memory was 39.3 MB in the beginning and 36.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4206.8ms, 120 PlacesBefore, 33 PlacesAfterwards, 119 TransitionsBefore, 26 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 66 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 107 TotalNumberOfCompositions, 1034 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 882, positive: 848, positive conditional: 0, positive unconditional: 848, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 494, positive: 481, positive conditional: 0, positive unconditional: 481, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 494, positive: 481, positive conditional: 0, positive unconditional: 481, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 53, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 882, positive: 367, positive conditional: 0, positive unconditional: 367, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 494, unknown conditional: 0, unknown unconditional: 494] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 66]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 133 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 7012.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 21.8ms, AutomataDifference: 470.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4278.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 90 SDtfs, 139 SDslu, 138 SDs, 0 SdLazy, 130 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 141.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 265.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 70.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 49.4ms SsaConstructionTime, 408.9ms SatisfiabilityAnalysisTime, 955.3ms InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 473 SizeOfPredicates, 25 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 6/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-04 19:17:42,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...