./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3a0869f001de62b6943524698cd9c3b7e844f7c .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:07:01,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:07:01,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:07:01,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:07:01,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:07:01,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:07:01,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:07:01,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:07:01,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:07:01,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:07:01,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:07:01,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:07:01,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:07:01,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:07:01,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:07:01,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:07:01,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:07:01,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:07:01,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:07:01,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:07:01,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:07:01,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:07:01,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:07:01,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:07:01,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:07:01,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:07:01,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:07:01,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:07:01,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:07:01,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:07:01,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:07:01,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:07:01,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:07:01,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:07:01,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:07:01,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:07:01,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:07:01,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:07:01,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:07:01,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:07:01,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:07:01,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:07:01,796 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:07:01,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:07:01,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:07:01,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:07:01,799 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:07:01,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:07:01,799 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:07:01,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:07:01,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:07:01,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:07:01,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:07:01,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:07:01,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:07:01,801 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:07:01,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:07:01,801 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:07:01,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:07:01,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:07:01,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:07:01,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:07:01,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:07:01,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:07:01,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:07:01,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:07:01,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:07:01,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:07:01,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:07:01,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:07:01,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/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(__VERIFIER_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 -> b3a0869f001de62b6943524698cd9c3b7e844f7c [2019-11-15 23:07:01,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:07:01,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:07:01,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:07:01,887 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:07:01,888 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:07:01,893 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe016_tso.opt.i [2019-11-15 23:07:01,968 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/data/b8ea66151/d82fed45efea4377b449f64a3f15a08d/FLAG9bb0e4858 [2019-11-15 23:07:02,584 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:07:02,585 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/sv-benchmarks/c/pthread-wmm/safe016_tso.opt.i [2019-11-15 23:07:02,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/data/b8ea66151/d82fed45efea4377b449f64a3f15a08d/FLAG9bb0e4858 [2019-11-15 23:07:02,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/data/b8ea66151/d82fed45efea4377b449f64a3f15a08d [2019-11-15 23:07:02,831 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:07:02,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:07:02,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:07:02,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:07:02,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:07:02,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:07:02" (1/1) ... [2019-11-15 23:07:02,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341e0bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:02, skipping insertion in model container [2019-11-15 23:07:02,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:07:02" (1/1) ... [2019-11-15 23:07:02,856 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:07:02,929 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:07:03,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:07:03,435 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:07:03,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:07:03,590 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:07:03,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03 WrapperNode [2019-11-15 23:07:03,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:07:03,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:07:03,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:07:03,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:07:03,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (1/1) ... [2019-11-15 23:07:03,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (1/1) ... [2019-11-15 23:07:03,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:07:03,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:07:03,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:07:03,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:07:03,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (1/1) ... [2019-11-15 23:07:03,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (1/1) ... [2019-11-15 23:07:03,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (1/1) ... [2019-11-15 23:07:03,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (1/1) ... [2019-11-15 23:07:03,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (1/1) ... [2019-11-15 23:07:03,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (1/1) ... [2019-11-15 23:07:03,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (1/1) ... [2019-11-15 23:07:03,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:07:03,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:07:03,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:07:03,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:07:03,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/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 [2019-11-15 23:07:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:07:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-15 23:07:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:07:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:07:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-15 23:07:03,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-15 23:07:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-15 23:07:03,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-15 23:07:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-15 23:07:03,784 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-15 23:07:03,786 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-15 23:07:03,786 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-15 23:07:03,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-15 23:07:03,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:07:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:07:03,791 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 23:07:04,325 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:07:04,325 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 23:07:04,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:07:04 BoogieIcfgContainer [2019-11-15 23:07:04,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:07:04,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:07:04,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:07:04,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:07:04,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:07:02" (1/3) ... [2019-11-15 23:07:04,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faffc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:07:04, skipping insertion in model container [2019-11-15 23:07:04,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:07:03" (2/3) ... [2019-11-15 23:07:04,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faffc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:07:04, skipping insertion in model container [2019-11-15 23:07:04,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:07:04" (3/3) ... [2019-11-15 23:07:04,337 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2019-11-15 23:07:04,408 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,408 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,409 WARN L315 ript$VariableManager]: TermVariabe Thread2_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,409 WARN L315 ript$VariableManager]: TermVariabe Thread2_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,410 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,410 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,410 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,411 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,411 WARN L315 ript$VariableManager]: TermVariabe Thread3_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,411 WARN L315 ript$VariableManager]: TermVariabe Thread3_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,411 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,412 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,412 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,412 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,413 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,413 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,413 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,413 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,414 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,414 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,414 WARN L315 ript$VariableManager]: TermVariabe Thread1_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,415 WARN L315 ript$VariableManager]: TermVariabe Thread1_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,415 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,415 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 23:07:04,429 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 23:07:04,430 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:07:04,439 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:07:04,450 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:07:04,472 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:07:04,472 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:07:04,472 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:07:04,472 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:07:04,472 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:07:04,473 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:07:04,473 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:07:04,473 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:07:04,484 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 58 transitions [2019-11-15 23:07:04,851 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5470 states. [2019-11-15 23:07:04,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states. [2019-11-15 23:07:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-15 23:07:04,888 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:07:04,889 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:07:04,893 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:07:04,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:07:04,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1043859850, now seen corresponding path program 1 times [2019-11-15 23:07:04,908 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:07:04,909 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721527059] [2019-11-15 23:07:04,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:04,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:04,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:07:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:07:05,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721527059] [2019-11-15 23:07:05,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:07:05,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:07:05,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755308612] [2019-11-15 23:07:05,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:07:05,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:05,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:07:05,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:07:05,295 INFO L87 Difference]: Start difference. First operand 5470 states. Second operand 4 states. [2019-11-15 23:07:05,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:05,496 INFO L93 Difference]: Finished difference Result 5707 states and 21932 transitions. [2019-11-15 23:07:05,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:07:05,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-11-15 23:07:05,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:05,548 INFO L225 Difference]: With dead ends: 5707 [2019-11-15 23:07:05,548 INFO L226 Difference]: Without dead ends: 2391 [2019-11-15 23:07:05,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:07:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2019-11-15 23:07:05,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2391. [2019-11-15 23:07:05,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2391 states. [2019-11-15 23:07:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 8935 transitions. [2019-11-15 23:07:05,822 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 8935 transitions. Word has length 33 [2019-11-15 23:07:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:05,823 INFO L462 AbstractCegarLoop]: Abstraction has 2391 states and 8935 transitions. [2019-11-15 23:07:05,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:07:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 8935 transitions. [2019-11-15 23:07:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-15 23:07:05,831 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:07:05,831 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:07:05,831 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:07:05,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:07:05,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1747668098, now seen corresponding path program 1 times [2019-11-15 23:07:05,832 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:07:05,833 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760114240] [2019-11-15 23:07:05,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:05,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:05,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:07:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:07:06,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760114240] [2019-11-15 23:07:06,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:07:06,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:07:06,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507662548] [2019-11-15 23:07:06,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:07:06,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:06,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:07:06,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:07:06,018 INFO L87 Difference]: Start difference. First operand 2391 states and 8935 transitions. Second operand 5 states. [2019-11-15 23:07:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:06,156 INFO L93 Difference]: Finished difference Result 2562 states and 9319 transitions. [2019-11-15 23:07:06,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:07:06,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-11-15 23:07:06,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:06,186 INFO L225 Difference]: With dead ends: 2562 [2019-11-15 23:07:06,186 INFO L226 Difference]: Without dead ends: 2307 [2019-11-15 23:07:06,187 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:07:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2019-11-15 23:07:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2307. [2019-11-15 23:07:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2307 states. [2019-11-15 23:07:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 8543 transitions. [2019-11-15 23:07:06,308 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 8543 transitions. Word has length 34 [2019-11-15 23:07:06,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:06,309 INFO L462 AbstractCegarLoop]: Abstraction has 2307 states and 8543 transitions. [2019-11-15 23:07:06,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:07:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 8543 transitions. [2019-11-15 23:07:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 23:07:06,317 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:07:06,317 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:07:06,318 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:07:06,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:07:06,318 INFO L82 PathProgramCache]: Analyzing trace with hash -139386971, now seen corresponding path program 1 times [2019-11-15 23:07:06,318 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:07:06,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268478107] [2019-11-15 23:07:06,319 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:06,319 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:06,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:07:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:07:06,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268478107] [2019-11-15 23:07:06,519 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:07:06,519 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 23:07:06,520 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503985624] [2019-11-15 23:07:06,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:07:06,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:06,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:07:06,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:07:06,521 INFO L87 Difference]: Start difference. First operand 2307 states and 8543 transitions. Second operand 6 states. [2019-11-15 23:07:06,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:06,741 INFO L93 Difference]: Finished difference Result 2172 states and 7679 transitions. [2019-11-15 23:07:06,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:07:06,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-11-15 23:07:06,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:06,772 INFO L225 Difference]: With dead ends: 2172 [2019-11-15 23:07:06,772 INFO L226 Difference]: Without dead ends: 1929 [2019-11-15 23:07:06,786 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:07:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2019-11-15 23:07:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1929. [2019-11-15 23:07:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1929 states. [2019-11-15 23:07:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 6905 transitions. [2019-11-15 23:07:06,958 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 6905 transitions. Word has length 35 [2019-11-15 23:07:06,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:06,959 INFO L462 AbstractCegarLoop]: Abstraction has 1929 states and 6905 transitions. [2019-11-15 23:07:06,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:07:06,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 6905 transitions. [2019-11-15 23:07:06,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-15 23:07:06,964 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:07:06,964 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:07:06,964 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:07:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:07:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash -327703417, now seen corresponding path program 1 times [2019-11-15 23:07:06,965 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:07:06,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908390237] [2019-11-15 23:07:06,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:06,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:06,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:07:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:07:07,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908390237] [2019-11-15 23:07:07,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:07:07,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 23:07:07,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705162045] [2019-11-15 23:07:07,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:07:07,093 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:07,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:07:07,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:07:07,094 INFO L87 Difference]: Start difference. First operand 1929 states and 6905 transitions. Second operand 7 states. [2019-11-15 23:07:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:07,266 INFO L93 Difference]: Finished difference Result 1362 states and 4529 transitions. [2019-11-15 23:07:07,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:07:07,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-11-15 23:07:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:07,279 INFO L225 Difference]: With dead ends: 1362 [2019-11-15 23:07:07,280 INFO L226 Difference]: Without dead ends: 1173 [2019-11-15 23:07:07,280 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:07:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2019-11-15 23:07:07,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2019-11-15 23:07:07,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2019-11-15 23:07:07,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 3881 transitions. [2019-11-15 23:07:07,326 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 3881 transitions. Word has length 36 [2019-11-15 23:07:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:07,327 INFO L462 AbstractCegarLoop]: Abstraction has 1173 states and 3881 transitions. [2019-11-15 23:07:07,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:07:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 3881 transitions. [2019-11-15 23:07:07,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 23:07:07,331 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:07:07,332 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:07:07,332 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:07:07,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:07:07,332 INFO L82 PathProgramCache]: Analyzing trace with hash -937082238, now seen corresponding path program 1 times [2019-11-15 23:07:07,333 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:07:07,333 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394319383] [2019-11-15 23:07:07,333 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:07,333 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:07,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:07:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:07:07,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394319383] [2019-11-15 23:07:07,465 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:07:07,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 23:07:07,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152451598] [2019-11-15 23:07:07,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:07:07,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:07,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:07:07,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:07:07,466 INFO L87 Difference]: Start difference. First operand 1173 states and 3881 transitions. Second operand 7 states. [2019-11-15 23:07:07,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:07,616 INFO L93 Difference]: Finished difference Result 1938 states and 6449 transitions. [2019-11-15 23:07:07,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:07:07,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-11-15 23:07:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:07,628 INFO L225 Difference]: With dead ends: 1938 [2019-11-15 23:07:07,628 INFO L226 Difference]: Without dead ends: 1149 [2019-11-15 23:07:07,628 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:07:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2019-11-15 23:07:07,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2019-11-15 23:07:07,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2019-11-15 23:07:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3788 transitions. [2019-11-15 23:07:07,669 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3788 transitions. Word has length 37 [2019-11-15 23:07:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:07,670 INFO L462 AbstractCegarLoop]: Abstraction has 1149 states and 3788 transitions. [2019-11-15 23:07:07,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:07:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3788 transitions. [2019-11-15 23:07:07,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 23:07:07,673 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:07:07,673 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:07:07,673 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:07:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:07:07,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1737875210, now seen corresponding path program 2 times [2019-11-15 23:07:07,674 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:07:07,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323343080] [2019-11-15 23:07:07,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:07,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:07,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:07:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:07:07,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323343080] [2019-11-15 23:07:07,807 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:07:07,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 23:07:07,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330521907] [2019-11-15 23:07:07,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:07:07,808 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:07,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:07:07,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:07:07,809 INFO L87 Difference]: Start difference. First operand 1149 states and 3788 transitions. Second operand 7 states. [2019-11-15 23:07:08,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:08,061 INFO L93 Difference]: Finished difference Result 2292 states and 7697 transitions. [2019-11-15 23:07:08,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 23:07:08,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-11-15 23:07:08,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:08,074 INFO L225 Difference]: With dead ends: 2292 [2019-11-15 23:07:08,074 INFO L226 Difference]: Without dead ends: 1155 [2019-11-15 23:07:08,075 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2019-11-15 23:07:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2019-11-15 23:07:08,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1074. [2019-11-15 23:07:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2019-11-15 23:07:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 3533 transitions. [2019-11-15 23:07:08,117 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 3533 transitions. Word has length 37 [2019-11-15 23:07:08,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:08,120 INFO L462 AbstractCegarLoop]: Abstraction has 1074 states and 3533 transitions. [2019-11-15 23:07:08,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:07:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 3533 transitions. [2019-11-15 23:07:08,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 23:07:08,123 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:07:08,123 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:07:08,124 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:07:08,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:07:08,124 INFO L82 PathProgramCache]: Analyzing trace with hash -756691990, now seen corresponding path program 3 times [2019-11-15 23:07:08,124 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:07:08,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752339523] [2019-11-15 23:07:08,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:08,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:08,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:07:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:07:08,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752339523] [2019-11-15 23:07:08,345 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:07:08,345 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 23:07:08,345 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445269983] [2019-11-15 23:07:08,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:07:08,346 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:08,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:07:08,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:07:08,346 INFO L87 Difference]: Start difference. First operand 1074 states and 3533 transitions. Second operand 8 states. [2019-11-15 23:07:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:08,500 INFO L93 Difference]: Finished difference Result 1695 states and 5639 transitions. [2019-11-15 23:07:08,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:07:08,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2019-11-15 23:07:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:08,510 INFO L225 Difference]: With dead ends: 1695 [2019-11-15 23:07:08,510 INFO L226 Difference]: Without dead ends: 882 [2019-11-15 23:07:08,511 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:07:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2019-11-15 23:07:08,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 882. [2019-11-15 23:07:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2019-11-15 23:07:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2933 transitions. [2019-11-15 23:07:08,546 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2933 transitions. Word has length 37 [2019-11-15 23:07:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:08,546 INFO L462 AbstractCegarLoop]: Abstraction has 882 states and 2933 transitions. [2019-11-15 23:07:08,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:07:08,547 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2933 transitions. [2019-11-15 23:07:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 23:07:08,550 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:07:08,550 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:07:08,550 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:07:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:07:08,551 INFO L82 PathProgramCache]: Analyzing trace with hash -898430370, now seen corresponding path program 4 times [2019-11-15 23:07:08,551 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:07:08,551 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643767326] [2019-11-15 23:07:08,552 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:08,552 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:07:08,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:07:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:07:08,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:07:08,709 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643767326] [2019-11-15 23:07:08,709 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:07:08,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 23:07:08,710 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564876891] [2019-11-15 23:07:08,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:07:08,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:07:08,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:07:08,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:07:08,711 INFO L87 Difference]: Start difference. First operand 882 states and 2933 transitions. Second operand 8 states. [2019-11-15 23:07:08,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:07:08,836 INFO L93 Difference]: Finished difference Result 720 states and 2339 transitions. [2019-11-15 23:07:08,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:07:08,836 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2019-11-15 23:07:08,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:07:08,836 INFO L225 Difference]: With dead ends: 720 [2019-11-15 23:07:08,836 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:07:08,837 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:07:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:07:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:07:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:07:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:07:08,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-11-15 23:07:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:07:08,838 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:07:08,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:07:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:07:08,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:07:08,842 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-15 23:07:08,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:07:08 BasicIcfg [2019-11-15 23:07:08,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:07:08,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:07:08,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:07:08,845 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:07:08,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:07:04" (3/4) ... [2019-11-15 23:07:08,849 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 23:07:08,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-15 23:07:08,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-15 23:07:08,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-15 23:07:08,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-15 23:07:08,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-15 23:07:08,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 23:07:08,936 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c6cdeb31-0b04-4ebf-8e23-b5c9f2cf0217/bin/uautomizer/witness.graphml [2019-11-15 23:07:08,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:07:08,939 INFO L168 Benchmark]: Toolchain (without parser) took 6106.09 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 261.6 MB). Free memory was 942.0 MB in the beginning and 953.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 250.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:08,939 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:07:08,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:08,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:07:08,946 INFO L168 Benchmark]: Boogie Preprocessor took 46.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:07:08,946 INFO L168 Benchmark]: RCFGBuilder took 627.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:08,947 INFO L168 Benchmark]: TraceAbstraction took 4516.67 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 127.4 MB). Free memory was 1.1 GB in the beginning and 964.9 MB in the end (delta: 102.1 MB). Peak memory consumption was 229.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:08,947 INFO L168 Benchmark]: Witness Printer took 91.71 ms. Allocated memory is still 1.3 GB. Free memory was 964.9 MB in the beginning and 953.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:07:08,949 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 753.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 627.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4516.67 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 127.4 MB). Free memory was 1.1 GB in the beginning and 964.9 MB in the end (delta: 102.1 MB). Peak memory consumption was 229.5 MB. Max. memory is 11.5 GB. * Witness Printer took 91.71 ms. Allocated memory is still 1.3 GB. Free memory was 964.9 MB in the beginning and 953.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 9 procedures, 78 locations, 1 error locations. Result: SAFE, OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 459 SDtfs, 786 SDslu, 1361 SDs, 0 SdLazy, 185 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5470occurred 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: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 81 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 29382 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...