./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer --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 32935a3786295b4ca9a51ffc083c82e75ec24a5d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:16:29,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:29,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:29,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:29,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:29,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:29,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:29,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:29,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:29,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:29,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:29,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:29,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:29,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:29,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:29,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:29,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:29,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:29,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:29,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:29,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:29,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:29,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:29,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:29,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:29,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:29,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:29,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:29,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:29,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:29,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:29,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:29,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:29,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:29,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:29,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:29,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:29,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:29,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:29,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:29,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:29,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:16:29,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:29,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:29,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:29,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:29,712 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:29,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:29,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:29,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:29,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:29,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:29,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:16:29,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:16:29,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:16:29,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:29,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:29,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:29,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:16:29,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:29,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:29,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:16:29,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:16:29,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:29,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:29,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:16:29,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:16:29,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:29,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:16:29,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:16:29,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:29,719 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:/tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32935a3786295b4ca9a51ffc083c82e75ec24a5d [2020-11-28 03:16:29,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:30,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:30,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:30,030 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:30,031 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:30,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i [2020-11-28 03:16:30,111 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/data/a23d9ac2a/6540ef17ecc94ec1a7d00093c1860d5c/FLAG23be35098 [2020-11-28 03:16:30,773 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:30,773 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i [2020-11-28 03:16:30,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/data/a23d9ac2a/6540ef17ecc94ec1a7d00093c1860d5c/FLAG23be35098 [2020-11-28 03:16:31,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/data/a23d9ac2a/6540ef17ecc94ec1a7d00093c1860d5c [2020-11-28 03:16:31,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:31,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:31,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:31,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:31,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:31,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c31b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31, skipping insertion in model container [2020-11-28 03:16:31,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:31,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:31,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:31,644 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:31,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:31,802 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:31,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31 WrapperNode [2020-11-28 03:16:31,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:31,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:31,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:31,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:31,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:31,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:31,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:31,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:31,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... [2020-11-28 03:16:31,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:31,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:31,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:31,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:31,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:16:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:16:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:16:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:16:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:16:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:16:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:16:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:16:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:16:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:16:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:32,005 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:16:32,461 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:32,462 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:16:32,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:32 BoogieIcfgContainer [2020-11-28 03:16:32,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:32,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:32,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:32,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:32,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:31" (1/3) ... [2020-11-28 03:16:32,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4db41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:32, skipping insertion in model container [2020-11-28 03:16:32,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:31" (2/3) ... [2020-11-28 03:16:32,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4db41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:32, skipping insertion in model container [2020-11-28 03:16:32,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:32" (3/3) ... [2020-11-28 03:16:32,479 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-11-28 03:16:32,490 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:16:32,490 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:32,495 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:16:32,496 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:16:32,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,522 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,522 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,524 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,524 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,525 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,525 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,525 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,526 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,526 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,526 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,527 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,527 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,529 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,529 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,529 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,530 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,537 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,537 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,537 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:16:32,540 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:16:32,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:16:32,582 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:32,583 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:16:32,583 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:32,583 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:32,583 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:32,583 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:32,583 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:32,583 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:32,594 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:16:32,596 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:16:32,599 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:16:32,600 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 03:16:32,642 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 03:16:32,643 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:16:32,647 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 03:16:32,650 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:16:34,510 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-28 03:16:35,212 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-28 03:16:35,508 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-28 03:16:35,511 INFO L131 LiptonReduction]: Checked pairs total: 2778 [2020-11-28 03:16:35,511 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-28 03:16:35,524 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 03:16:35,566 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 03:16:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 03:16:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:16:35,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:35,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:35,574 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:35,578 INFO L82 PathProgramCache]: Analyzing trace with hash -345538935, now seen corresponding path program 1 times [2020-11-28 03:16:35,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:35,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27992602] [2020-11-28 03:16:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:35,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27992602] [2020-11-28 03:16:35,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:35,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:16:35,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109555377] [2020-11-28 03:16:35,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:16:35,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:35,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:16:35,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:16:35,827 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 03:16:35,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:35,872 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 03:16:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:16:35,873 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:16:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:35,899 INFO L225 Difference]: With dead ends: 362 [2020-11-28 03:16:35,899 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 03:16:35,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:16:35,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 03:16:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 03:16:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 03:16:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 03:16:35,995 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 03:16:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:35,997 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 03:16:35,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:16:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 03:16:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:16:36,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:36,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:36,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:36,004 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:36,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2121797576, now seen corresponding path program 1 times [2020-11-28 03:16:36,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:36,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654774257] [2020-11-28 03:16:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:36,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654774257] [2020-11-28 03:16:36,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:36,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:16:36,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291957827] [2020-11-28 03:16:36,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:36,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:36,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:36,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:36,165 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-28 03:16:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:36,227 INFO L93 Difference]: Finished difference Result 298 states and 816 transitions. [2020-11-28 03:16:36,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:36,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:16:36,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:36,233 INFO L225 Difference]: With dead ends: 298 [2020-11-28 03:16:36,233 INFO L226 Difference]: Without dead ends: 234 [2020-11-28 03:16:36,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-28 03:16:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-11-28 03:16:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-28 03:16:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 640 transitions. [2020-11-28 03:16:36,257 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 640 transitions. Word has length 9 [2020-11-28 03:16:36,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:36,258 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 640 transitions. [2020-11-28 03:16:36,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:36,259 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 640 transitions. [2020-11-28 03:16:36,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:16:36,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:36,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:36,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:16:36,262 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:36,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1060758680, now seen corresponding path program 1 times [2020-11-28 03:16:36,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:36,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263618297] [2020-11-28 03:16:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:36,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263618297] [2020-11-28 03:16:36,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:36,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:36,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707778960] [2020-11-28 03:16:36,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:36,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:36,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:36,404 INFO L87 Difference]: Start difference. First operand 234 states and 640 transitions. Second operand 4 states. [2020-11-28 03:16:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:36,451 INFO L93 Difference]: Finished difference Result 346 states and 916 transitions. [2020-11-28 03:16:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:36,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:16:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:36,454 INFO L225 Difference]: With dead ends: 346 [2020-11-28 03:16:36,454 INFO L226 Difference]: Without dead ends: 164 [2020-11-28 03:16:36,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:36,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-28 03:16:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-11-28 03:16:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-28 03:16:36,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 432 transitions. [2020-11-28 03:16:36,459 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 432 transitions. Word has length 11 [2020-11-28 03:16:36,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:36,459 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 432 transitions. [2020-11-28 03:16:36,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:36,460 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 432 transitions. [2020-11-28 03:16:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:16:36,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:36,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:36,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:16:36,461 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:36,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:36,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1476250237, now seen corresponding path program 1 times [2020-11-28 03:16:36,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:36,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639937093] [2020-11-28 03:16:36,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:36,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639937093] [2020-11-28 03:16:36,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:36,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:36,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897449858] [2020-11-28 03:16:36,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:36,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:36,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:36,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:36,554 INFO L87 Difference]: Start difference. First operand 164 states and 432 transitions. Second operand 4 states. [2020-11-28 03:16:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:36,591 INFO L93 Difference]: Finished difference Result 183 states and 435 transitions. [2020-11-28 03:16:36,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:36,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:16:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:36,596 INFO L225 Difference]: With dead ends: 183 [2020-11-28 03:16:36,596 INFO L226 Difference]: Without dead ends: 131 [2020-11-28 03:16:36,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-28 03:16:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-11-28 03:16:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-28 03:16:36,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 303 transitions. [2020-11-28 03:16:36,601 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 303 transitions. Word has length 12 [2020-11-28 03:16:36,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:36,601 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 303 transitions. [2020-11-28 03:16:36,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:36,602 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 303 transitions. [2020-11-28 03:16:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:16:36,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:36,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:36,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:16:36,607 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:36,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:36,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1073724632, now seen corresponding path program 1 times [2020-11-28 03:16:36,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:36,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598226214] [2020-11-28 03:16:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:36,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598226214] [2020-11-28 03:16:36,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:36,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:36,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147262965] [2020-11-28 03:16:36,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:36,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:36,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:36,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:36,723 INFO L87 Difference]: Start difference. First operand 131 states and 303 transitions. Second operand 5 states. [2020-11-28 03:16:36,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:36,828 INFO L93 Difference]: Finished difference Result 118 states and 245 transitions. [2020-11-28 03:16:36,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:36,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:16:36,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:36,829 INFO L225 Difference]: With dead ends: 118 [2020-11-28 03:16:36,830 INFO L226 Difference]: Without dead ends: 87 [2020-11-28 03:16:36,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:36,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-28 03:16:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-28 03:16:36,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-28 03:16:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 172 transitions. [2020-11-28 03:16:36,842 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 172 transitions. Word has length 13 [2020-11-28 03:16:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:36,842 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 172 transitions. [2020-11-28 03:16:36,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 172 transitions. [2020-11-28 03:16:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:16:36,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:36,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:36,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:16:36,844 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:36,844 INFO L82 PathProgramCache]: Analyzing trace with hash 809328863, now seen corresponding path program 1 times [2020-11-28 03:16:36,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:36,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143260286] [2020-11-28 03:16:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:36,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143260286] [2020-11-28 03:16:36,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:36,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:36,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874629288] [2020-11-28 03:16:36,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:36,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:36,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:36,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:36,948 INFO L87 Difference]: Start difference. First operand 87 states and 172 transitions. Second operand 6 states. [2020-11-28 03:16:37,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:37,021 INFO L93 Difference]: Finished difference Result 76 states and 148 transitions. [2020-11-28 03:16:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:16:37,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 03:16:37,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:37,023 INFO L225 Difference]: With dead ends: 76 [2020-11-28 03:16:37,023 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 03:16:37,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 03:16:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-11-28 03:16:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-28 03:16:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 132 transitions. [2020-11-28 03:16:37,026 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 132 transitions. Word has length 15 [2020-11-28 03:16:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:37,027 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 132 transitions. [2020-11-28 03:16:37,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 132 transitions. [2020-11-28 03:16:37,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:16:37,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:37,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:37,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:16:37,028 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:37,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:37,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1097223765, now seen corresponding path program 1 times [2020-11-28 03:16:37,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:37,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810421146] [2020-11-28 03:16:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:37,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810421146] [2020-11-28 03:16:37,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:37,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:37,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764309220] [2020-11-28 03:16:37,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:37,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:37,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:37,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:37,124 INFO L87 Difference]: Start difference. First operand 67 states and 132 transitions. Second operand 5 states. [2020-11-28 03:16:37,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:37,168 INFO L93 Difference]: Finished difference Result 87 states and 167 transitions. [2020-11-28 03:16:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:37,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:16:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:37,169 INFO L225 Difference]: With dead ends: 87 [2020-11-28 03:16:37,170 INFO L226 Difference]: Without dead ends: 40 [2020-11-28 03:16:37,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-28 03:16:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-28 03:16:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 03:16:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-11-28 03:16:37,172 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 18 [2020-11-28 03:16:37,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:37,172 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-11-28 03:16:37,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-11-28 03:16:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:16:37,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:37,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:37,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:16:37,173 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:37,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:37,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1731427213, now seen corresponding path program 2 times [2020-11-28 03:16:37,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:37,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884380414] [2020-11-28 03:16:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:37,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884380414] [2020-11-28 03:16:37,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:37,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:37,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028619499] [2020-11-28 03:16:37,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:37,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:37,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:37,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:37,267 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-11-28 03:16:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:37,301 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2020-11-28 03:16:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:37,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:16:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:37,302 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:16:37,302 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:16:37,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:16:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:16:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:16:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:16:37,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 03:16:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:37,303 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:16:37,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:37,303 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:16:37,303 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:16:37,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:16:37,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:16:37 BasicIcfg [2020-11-28 03:16:37,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:16:37,310 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:37,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:37,312 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:37,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:32" (3/4) ... [2020-11-28 03:16:37,316 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:16:37,324 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:16:37,324 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:16:37,325 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:16:37,331 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:16:37,331 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:16:37,331 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:16:37,332 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:16:37,392 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e2a0954e-24a7-4828-9324-d673fac64774/bin/uautomizer/witness.graphml [2020-11-28 03:16:37,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:37,393 INFO L168 Benchmark]: Toolchain (without parser) took 6351.83 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 87.9 MB in the beginning and 98.0 MB in the end (delta: -10.1 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:37,394 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 83.9 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:37,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.81 ms. Allocated memory is still 117.4 MB. Free memory was 87.7 MB in the beginning and 73.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:37,395 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.25 ms. Allocated memory is still 117.4 MB. Free memory was 73.7 MB in the beginning and 71.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:37,395 INFO L168 Benchmark]: Boogie Preprocessor took 44.07 ms. Allocated memory is still 117.4 MB. Free memory was 71.6 MB in the beginning and 70.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:37,396 INFO L168 Benchmark]: RCFGBuilder took 547.10 ms. Allocated memory is still 117.4 MB. Free memory was 70.0 MB in the beginning and 86.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:37,397 INFO L168 Benchmark]: TraceAbstraction took 4841.30 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 85.5 MB in the beginning and 100.1 MB in the end (delta: -14.6 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:37,397 INFO L168 Benchmark]: Witness Printer took 82.29 ms. Allocated memory is still 172.0 MB. Free memory was 100.1 MB in the beginning and 98.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:37,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 83.9 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 755.81 ms. Allocated memory is still 117.4 MB. Free memory was 87.7 MB in the beginning and 73.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.25 ms. Allocated memory is still 117.4 MB. Free memory was 73.7 MB in the beginning and 71.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.07 ms. Allocated memory is still 117.4 MB. Free memory was 71.6 MB in the beginning and 70.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 547.10 ms. Allocated memory is still 117.4 MB. Free memory was 70.0 MB in the beginning and 86.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4841.30 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 85.5 MB in the beginning and 100.1 MB in the end (delta: -14.6 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. * Witness Printer took 82.29 ms. Allocated memory is still 172.0 MB. Free memory was 100.1 MB in the beginning and 98.0 MB in the end (delta: 2.1 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 999 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2778 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 178 SDtfs, 146 SDslu, 278 SDs, 0 SdLazy, 122 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...