./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/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 e582d929204997136f783dc3bbc5b7d5f0ce2f78 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 06:25:38,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:25:38,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:25:38,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:25:38,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:25:38,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:25:38,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:25:38,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:25:38,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:25:38,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:25:38,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:25:38,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:25:38,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:25:38,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:25:38,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:25:38,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:25:38,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:25:38,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:25:38,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:25:38,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:25:38,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:25:38,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:25:38,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:25:38,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:25:38,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:25:38,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:25:38,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:25:38,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:25:38,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:25:38,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:25:38,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:25:38,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:25:38,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:25:38,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:25:38,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:25:38,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:25:38,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:25:38,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:25:38,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:25:38,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:25:38,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:25:38,906 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 06:25:38,920 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:25:38,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:25:38,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:25:38,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:25:38,921 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:25:38,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:25:38,922 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 06:25:38,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 06:25:38,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 06:25:38,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:25:38,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 06:25:38,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:25:38,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 06:25:38,923 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 06:25:38,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:25:38,924 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:25:38,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 06:25:38,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:25:38,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:25:38,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:25:38,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:25:38,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:25:38,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:25:38,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:25:38,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 06:25:38,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 06:25:38,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 06:25:38,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 06:25:38,926 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_6840df00-af60-4bc4-b4ef-270522524935/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 -> e582d929204997136f783dc3bbc5b7d5f0ce2f78 [2019-11-20 06:25:39,083 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:25:39,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:25:39,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:25:39,099 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:25:39,099 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:25:39,100 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2019-11-20 06:25:39,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/data/7f2cd5d37/2fe72ca3ef89485dae6ab4bcea9fa40f/FLAG5b270cd9c [2019-11-20 06:25:39,608 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:25:39,608 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2019-11-20 06:25:39,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/data/7f2cd5d37/2fe72ca3ef89485dae6ab4bcea9fa40f/FLAG5b270cd9c [2019-11-20 06:25:39,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/data/7f2cd5d37/2fe72ca3ef89485dae6ab4bcea9fa40f [2019-11-20 06:25:39,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:25:39,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:25:39,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:25:39,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:25:39,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:25:39,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:25:39" (1/1) ... [2019-11-20 06:25:39,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3721db27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:39, skipping insertion in model container [2019-11-20 06:25:39,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:25:39" (1/1) ... [2019-11-20 06:25:39,923 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:25:39,966 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:25:40,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:25:40,391 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:25:40,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:25:40,556 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:25:40,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40 WrapperNode [2019-11-20 06:25:40,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:25:40,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:25:40,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:25:40,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:25:40,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (1/1) ... [2019-11-20 06:25:40,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (1/1) ... [2019-11-20 06:25:40,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:25:40,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:25:40,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:25:40,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:25:40,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (1/1) ... [2019-11-20 06:25:40,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (1/1) ... [2019-11-20 06:25:40,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (1/1) ... [2019-11-20 06:25:40,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (1/1) ... [2019-11-20 06:25:40,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (1/1) ... [2019-11-20 06:25:40,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (1/1) ... [2019-11-20 06:25:40,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (1/1) ... [2019-11-20 06:25:40,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:25:40,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:25:40,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:25:40,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:25:40,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/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 [2019-11-20 06:25:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 06:25:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-20 06:25:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 06:25:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 06:25:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-20 06:25:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-20 06:25:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-20 06:25:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-20 06:25:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-20 06:25:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-20 06:25:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-20 06:25:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:25:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:25:40,736 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 06:25:41,188 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:25:41,189 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 06:25:41,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:25:41 BoogieIcfgContainer [2019-11-20 06:25:41,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:25:41,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:25:41,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:25:41,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:25:41,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:25:39" (1/3) ... [2019-11-20 06:25:41,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6e625b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:25:41, skipping insertion in model container [2019-11-20 06:25:41,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:25:40" (2/3) ... [2019-11-20 06:25:41,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6e625b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:25:41, skipping insertion in model container [2019-11-20 06:25:41,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:25:41" (3/3) ... [2019-11-20 06:25:41,205 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2019-11-20 06:25:41,274 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,274 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,274 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,275 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,275 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,275 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,276 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,276 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,276 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,277 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,277 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,277 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,278 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,278 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,278 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,278 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,279 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,279 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,280 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,280 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,280 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,280 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,281 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,281 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,282 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,282 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,282 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,283 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,283 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,283 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,284 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,285 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,285 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,285 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,286 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,287 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,287 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,288 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,288 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,289 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,292 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,293 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,294 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,294 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,295 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,295 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,295 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,296 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,297 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,297 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,297 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,297 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,298 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,298 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:25:41,324 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 06:25:41,324 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:25:41,330 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 06:25:41,340 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 06:25:41,359 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:25:41,359 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 06:25:41,359 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:25:41,359 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:25:41,359 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:25:41,359 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:25:41,360 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:25:41,360 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:25:41,372 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 75 transitions [2019-11-20 06:25:45,107 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 31744 states. [2019-11-20 06:25:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 31744 states. [2019-11-20 06:25:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 06:25:45,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:25:45,176 INFO L410 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] [2019-11-20 06:25:45,176 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:25:45,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:25:45,182 INFO L82 PathProgramCache]: Analyzing trace with hash -506550753, now seen corresponding path program 1 times [2019-11-20 06:25:45,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:25:45,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246835102] [2019-11-20 06:25:45,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:25:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:25:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:25:45,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246835102] [2019-11-20 06:25:45,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:25:45,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 06:25:45,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564821182] [2019-11-20 06:25:45,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 06:25:45,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:25:45,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 06:25:45,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 06:25:45,551 INFO L87 Difference]: Start difference. First operand 31744 states. Second operand 4 states. [2019-11-20 06:25:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:25:46,206 INFO L93 Difference]: Finished difference Result 33013 states and 103293 transitions. [2019-11-20 06:25:46,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 06:25:46,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-20 06:25:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:25:46,366 INFO L225 Difference]: With dead ends: 33013 [2019-11-20 06:25:46,366 INFO L226 Difference]: Without dead ends: 14275 [2019-11-20 06:25:46,368 INFO L630 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 [2019-11-20 06:25:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2019-11-20 06:25:47,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 14275. [2019-11-20 06:25:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14275 states. [2019-11-20 06:25:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14275 states to 14275 states and 44298 transitions. [2019-11-20 06:25:47,084 INFO L78 Accepts]: Start accepts. Automaton has 14275 states and 44298 transitions. Word has length 31 [2019-11-20 06:25:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:25:47,085 INFO L462 AbstractCegarLoop]: Abstraction has 14275 states and 44298 transitions. [2019-11-20 06:25:47,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 06:25:47,086 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states and 44298 transitions. [2019-11-20 06:25:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 06:25:47,115 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:25:47,115 INFO L410 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] [2019-11-20 06:25:47,116 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:25:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:25:47,124 INFO L82 PathProgramCache]: Analyzing trace with hash -394564950, now seen corresponding path program 1 times [2019-11-20 06:25:47,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:25:47,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464282270] [2019-11-20 06:25:47,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:25:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:25:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:25:47,286 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464282270] [2019-11-20 06:25:47,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:25:47,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 06:25:47,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894176456] [2019-11-20 06:25:47,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:25:47,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:25:47,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:25:47,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:25:47,289 INFO L87 Difference]: Start difference. First operand 14275 states and 44298 transitions. Second operand 5 states. [2019-11-20 06:25:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:25:47,638 INFO L93 Difference]: Finished difference Result 14275 states and 42111 transitions. [2019-11-20 06:25:47,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 06:25:47,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-20 06:25:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:25:47,702 INFO L225 Difference]: With dead ends: 14275 [2019-11-20 06:25:47,702 INFO L226 Difference]: Without dead ends: 12574 [2019-11-20 06:25:47,703 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:25:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12574 states. [2019-11-20 06:25:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12574 to 12574. [2019-11-20 06:25:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12574 states. [2019-11-20 06:25:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12574 states to 12574 states and 38061 transitions. [2019-11-20 06:25:48,197 INFO L78 Accepts]: Start accepts. Automaton has 12574 states and 38061 transitions. Word has length 32 [2019-11-20 06:25:48,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:25:48,198 INFO L462 AbstractCegarLoop]: Abstraction has 12574 states and 38061 transitions. [2019-11-20 06:25:48,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:25:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 12574 states and 38061 transitions. [2019-11-20 06:25:48,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 06:25:48,231 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:25:48,232 INFO L410 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] [2019-11-20 06:25:48,232 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:25:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:25:48,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1210067525, now seen corresponding path program 1 times [2019-11-20 06:25:48,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:25:48,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432915640] [2019-11-20 06:25:48,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:25:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:25:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:25:48,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432915640] [2019-11-20 06:25:48,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:25:48,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 06:25:48,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811080264] [2019-11-20 06:25:48,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 06:25:48,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:25:48,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 06:25:48,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:25:48,584 INFO L87 Difference]: Start difference. First operand 12574 states and 38061 transitions. Second operand 6 states. [2019-11-20 06:25:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:25:48,802 INFO L93 Difference]: Finished difference Result 8929 states and 24939 transitions. [2019-11-20 06:25:48,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 06:25:48,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-11-20 06:25:48,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:25:48,827 INFO L225 Difference]: With dead ends: 8929 [2019-11-20 06:25:48,827 INFO L226 Difference]: Without dead ends: 7471 [2019-11-20 06:25:48,828 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-20 06:25:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2019-11-20 06:25:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7471. [2019-11-20 06:25:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7471 states. [2019-11-20 06:25:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7471 states to 7471 states and 21051 transitions. [2019-11-20 06:25:49,053 INFO L78 Accepts]: Start accepts. Automaton has 7471 states and 21051 transitions. Word has length 33 [2019-11-20 06:25:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:25:49,054 INFO L462 AbstractCegarLoop]: Abstraction has 7471 states and 21051 transitions. [2019-11-20 06:25:49,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 06:25:49,054 INFO L276 IsEmpty]: Start isEmpty. Operand 7471 states and 21051 transitions. [2019-11-20 06:25:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 06:25:49,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:25:49,068 INFO L410 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] [2019-11-20 06:25:49,068 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:25:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:25:49,068 INFO L82 PathProgramCache]: Analyzing trace with hash -958284551, now seen corresponding path program 1 times [2019-11-20 06:25:49,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:25:49,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254164474] [2019-11-20 06:25:49,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:25:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:25:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:25:49,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254164474] [2019-11-20 06:25:49,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:25:49,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 06:25:49,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974190116] [2019-11-20 06:25:49,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 06:25:49,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:25:49,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 06:25:49,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:25:49,266 INFO L87 Difference]: Start difference. First operand 7471 states and 21051 transitions. Second operand 7 states. [2019-11-20 06:25:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:25:49,631 INFO L93 Difference]: Finished difference Result 12655 states and 35496 transitions. [2019-11-20 06:25:49,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 06:25:49,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2019-11-20 06:25:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:25:49,659 INFO L225 Difference]: With dead ends: 12655 [2019-11-20 06:25:49,659 INFO L226 Difference]: Without dead ends: 8038 [2019-11-20 06:25:49,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-20 06:25:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8038 states. [2019-11-20 06:25:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8038 to 7228. [2019-11-20 06:25:49,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7228 states. [2019-11-20 06:25:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7228 states to 7228 states and 20322 transitions. [2019-11-20 06:25:49,871 INFO L78 Accepts]: Start accepts. Automaton has 7228 states and 20322 transitions. Word has length 34 [2019-11-20 06:25:49,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:25:49,872 INFO L462 AbstractCegarLoop]: Abstraction has 7228 states and 20322 transitions. [2019-11-20 06:25:49,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 06:25:49,872 INFO L276 IsEmpty]: Start isEmpty. Operand 7228 states and 20322 transitions. [2019-11-20 06:25:49,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 06:25:49,882 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:25:49,883 INFO L410 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] [2019-11-20 06:25:49,883 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:25:49,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:25:49,883 INFO L82 PathProgramCache]: Analyzing trace with hash 756079867, now seen corresponding path program 2 times [2019-11-20 06:25:49,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:25:49,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077878575] [2019-11-20 06:25:49,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:25:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:25:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:25:50,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077878575] [2019-11-20 06:25:50,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:25:50,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 06:25:50,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048432607] [2019-11-20 06:25:50,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 06:25:50,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:25:50,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 06:25:50,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 06:25:50,104 INFO L87 Difference]: Start difference. First operand 7228 states and 20322 transitions. Second operand 8 states. [2019-11-20 06:25:50,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:25:50,302 INFO L93 Difference]: Finished difference Result 11602 states and 32715 transitions. [2019-11-20 06:25:50,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 06:25:50,302 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-20 06:25:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:25:50,334 INFO L225 Difference]: With dead ends: 11602 [2019-11-20 06:25:50,335 INFO L226 Difference]: Without dead ends: 6904 [2019-11-20 06:25:50,335 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:25:50,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2019-11-20 06:25:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 6904. [2019-11-20 06:25:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6904 states. [2019-11-20 06:25:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 19512 transitions. [2019-11-20 06:25:50,518 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 19512 transitions. Word has length 34 [2019-11-20 06:25:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:25:50,518 INFO L462 AbstractCegarLoop]: Abstraction has 6904 states and 19512 transitions. [2019-11-20 06:25:50,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 06:25:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 19512 transitions. [2019-11-20 06:25:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 06:25:50,529 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:25:50,529 INFO L410 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] [2019-11-20 06:25:50,529 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:25:50,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:25:50,530 INFO L82 PathProgramCache]: Analyzing trace with hash -492878981, now seen corresponding path program 3 times [2019-11-20 06:25:50,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:25:50,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946948113] [2019-11-20 06:25:50,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:25:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:25:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:25:50,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946948113] [2019-11-20 06:25:50,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:25:50,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 06:25:50,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065831122] [2019-11-20 06:25:50,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 06:25:50,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:25:50,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 06:25:50,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 06:25:50,670 INFO L87 Difference]: Start difference. First operand 6904 states and 19512 transitions. Second operand 8 states. [2019-11-20 06:25:51,025 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-20 06:25:51,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:25:51,061 INFO L93 Difference]: Finished difference Result 11845 states and 33390 transitions. [2019-11-20 06:25:51,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 06:25:51,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-20 06:25:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:25:51,078 INFO L225 Difference]: With dead ends: 11845 [2019-11-20 06:25:51,079 INFO L226 Difference]: Without dead ends: 6715 [2019-11-20 06:25:51,079 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-20 06:25:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6715 states. [2019-11-20 06:25:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6715 to 6715. [2019-11-20 06:25:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6715 states. [2019-11-20 06:25:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6715 states to 6715 states and 18972 transitions. [2019-11-20 06:25:51,244 INFO L78 Accepts]: Start accepts. Automaton has 6715 states and 18972 transitions. Word has length 34 [2019-11-20 06:25:51,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:25:51,245 INFO L462 AbstractCegarLoop]: Abstraction has 6715 states and 18972 transitions. [2019-11-20 06:25:51,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 06:25:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 6715 states and 18972 transitions. [2019-11-20 06:25:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 06:25:51,254 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:25:51,254 INFO L410 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] [2019-11-20 06:25:51,254 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:25:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:25:51,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1112810425, now seen corresponding path program 4 times [2019-11-20 06:25:51,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:25:51,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829878333] [2019-11-20 06:25:51,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:25:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:25:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:25:51,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829878333] [2019-11-20 06:25:51,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:25:51,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 06:25:51,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389451860] [2019-11-20 06:25:51,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 06:25:51,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:25:51,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 06:25:51,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:25:51,400 INFO L87 Difference]: Start difference. First operand 6715 states and 18972 transitions. Second operand 7 states. [2019-11-20 06:25:51,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:25:51,537 INFO L93 Difference]: Finished difference Result 5257 states and 14598 transitions. [2019-11-20 06:25:51,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 06:25:51,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2019-11-20 06:25:51,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:25:51,538 INFO L225 Difference]: With dead ends: 5257 [2019-11-20 06:25:51,538 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 06:25:51,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-20 06:25:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 06:25:51,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 06:25:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 06:25:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 06:25:51,540 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-11-20 06:25:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:25:51,540 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 06:25:51,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 06:25:51,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 06:25:51,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 06:25:51,544 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 06:25:51,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:25:51 BasicIcfg [2019-11-20 06:25:51,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 06:25:51,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 06:25:51,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 06:25:51,547 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 06:25:51,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:25:41" (3/4) ... [2019-11-20 06:25:51,551 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 06:25:51,568 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-20 06:25:51,581 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-20 06:25:51,581 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-20 06:25:51,587 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-20 06:25:51,587 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 06:25:51,587 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 06:25:51,649 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6840df00-af60-4bc4-b4ef-270522524935/bin/uautomizer/witness.graphml [2019-11-20 06:25:51,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 06:25:51,651 INFO L168 Benchmark]: Toolchain (without parser) took 11746.69 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 784.3 MB). Free memory was 944.7 MB in the beginning and 1.5 GB in the end (delta: -533.9 MB). Peak memory consumption was 250.5 MB. Max. memory is 11.5 GB. [2019-11-20 06:25:51,652 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:25:51,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -215.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 06:25:51,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:25:51,658 INFO L168 Benchmark]: Boogie Preprocessor took 28.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:25:51,658 INFO L168 Benchmark]: RCFGBuilder took 523.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-11-20 06:25:51,659 INFO L168 Benchmark]: TraceAbstraction took 10355.18 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 596.1 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -366.9 MB). Peak memory consumption was 229.2 MB. Max. memory is 11.5 GB. [2019-11-20 06:25:51,659 INFO L168 Benchmark]: Witness Printer took 103.23 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-20 06:25:51,661 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 652.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -215.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 78.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 523.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10355.18 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 596.1 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -366.9 MB). Peak memory consumption was 229.2 MB. Max. memory is 11.5 GB. * Witness Printer took 103.23 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 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 13 procedures, 90 locations, 1 error locations. Result: SAFE, OverallTime: 10.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 707 SDtfs, 1080 SDslu, 1898 SDs, 0 SdLazy, 341 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31744occurred 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: 1.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 810 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 21375 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...