./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037_tso.oepc.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_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/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 64f580e0ffd8889d40f9b765cad301a5a3dbfae4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:08:16,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:08:16,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:08:16,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:08:16,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:08:16,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:08:16,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:08:16,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:08:16,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:08:16,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:08:16,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:08:16,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:08:16,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:08:16,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:08:16,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:08:16,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:08:16,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:08:16,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:08:16,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:08:16,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:08:16,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:08:16,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:08:16,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:08:16,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:08:16,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:08:16,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:08:16,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:08:16,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:08:16,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:08:16,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:08:16,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:08:16,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:08:16,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:08:16,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:08:16,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:08:16,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:08:16,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:08:16,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:08:16,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:08:16,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:08:16,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:08:16,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 09:08:16,991 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:08:16,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:08:16,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:08:16,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:08:16,994 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:08:16,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:08:16,995 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:08:16,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:08:16,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:08:16,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:08:16,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 09:08:16,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:08:16,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 09:08:16,997 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:08:16,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:08:16,997 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:08:16,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 09:08:16,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:08:16,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:08:16,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:08:16,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:08:16,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:08:16,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:08:16,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:08:16,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 09:08:17,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 09:08:17,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 09:08:17,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 09:08:17,000 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_87129030-dc02-467a-9339-7f3fd9868b9d/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 -> 64f580e0ffd8889d40f9b765cad301a5a3dbfae4 [2019-11-20 09:08:17,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:08:17,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:08:17,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:08:17,184 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:08:17,184 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:08:17,185 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe037_tso.oepc.i [2019-11-20 09:08:17,242 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/data/b1f6fee51/b0e07e999c914fcea0fe1e7ff98c0cd6/FLAG49840e434 [2019-11-20 09:08:17,728 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:08:17,729 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/sv-benchmarks/c/pthread-wmm/safe037_tso.oepc.i [2019-11-20 09:08:17,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/data/b1f6fee51/b0e07e999c914fcea0fe1e7ff98c0cd6/FLAG49840e434 [2019-11-20 09:08:18,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/data/b1f6fee51/b0e07e999c914fcea0fe1e7ff98c0cd6 [2019-11-20 09:08:18,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:08:18,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:08:18,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:08:18,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:08:18,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:08:18,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377a172a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18, skipping insertion in model container [2019-11-20 09:08:18,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,089 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:08:18,140 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:08:18,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:08:18,595 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:08:18,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:08:18,738 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:08:18,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18 WrapperNode [2019-11-20 09:08:18,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:08:18,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:08:18,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:08:18,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:08:18,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:08:18,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:08:18,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:08:18,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:08:18,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (1/1) ... [2019-11-20 09:08:18,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:08:18,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:08:18,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:08:18,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:08:18,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/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 09:08:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 09:08:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-20 09:08:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 09:08:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:08:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-20 09:08:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-20 09:08:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-20 09:08:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-20 09:08:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-20 09:08:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-20 09:08:18,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-20 09:08:18,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:08:18,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:08:18,931 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 09:08:19,288 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:08:19,289 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 09:08:19,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:08:19 BoogieIcfgContainer [2019-11-20 09:08:19,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:08:19,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:08:19,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:08:19,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:08:19,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:08:18" (1/3) ... [2019-11-20 09:08:19,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c5cfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:08:19, skipping insertion in model container [2019-11-20 09:08:19,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:08:18" (2/3) ... [2019-11-20 09:08:19,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c5cfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:08:19, skipping insertion in model container [2019-11-20 09:08:19,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:08:19" (3/3) ... [2019-11-20 09:08:19,297 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_tso.oepc.i [2019-11-20 09:08:19,339 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,339 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,339 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,339 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,340 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,340 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,340 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,340 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,341 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,341 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,341 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,341 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,342 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,342 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,342 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,342 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,343 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,343 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,343 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,343 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,343 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,344 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,344 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,344 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,344 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,345 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,345 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,345 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,345 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,346 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,346 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,346 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,346 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,346 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,347 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,347 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,347 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,348 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,348 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,348 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,348 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,348 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,349 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,349 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,349 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,349 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,350 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,350 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,350 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,350 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,351 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,351 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,351 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,351 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 09:08:19,398 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 09:08:19,399 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:08:19,404 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 09:08:19,413 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 09:08:19,429 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:08:19,429 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 09:08:19,429 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:08:19,429 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:08:19,429 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:08:19,429 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:08:19,429 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:08:19,430 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:08:19,440 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 76 transitions [2019-11-20 09:08:22,881 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 31745 states. [2019-11-20 09:08:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 31745 states. [2019-11-20 09:08:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 09:08:22,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:08:22,939 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 09:08:22,940 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:08:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:08:22,945 INFO L82 PathProgramCache]: Analyzing trace with hash -461674589, now seen corresponding path program 1 times [2019-11-20 09:08:22,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:08:22,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919962928] [2019-11-20 09:08:22,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:08:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:08:23,318 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 09:08:23,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919962928] [2019-11-20 09:08:23,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:08:23,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 09:08:23,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655163960] [2019-11-20 09:08:23,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 09:08:23,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:08:23,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 09:08:23,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 09:08:23,336 INFO L87 Difference]: Start difference. First operand 31745 states. Second operand 4 states. [2019-11-20 09:08:23,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:08:23,883 INFO L93 Difference]: Finished difference Result 33014 states and 103294 transitions. [2019-11-20 09:08:23,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 09:08:23,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-20 09:08:23,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:08:24,033 INFO L225 Difference]: With dead ends: 33014 [2019-11-20 09:08:24,034 INFO L226 Difference]: Without dead ends: 14276 [2019-11-20 09:08:24,036 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 09:08:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14276 states. [2019-11-20 09:08:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14276 to 14276. [2019-11-20 09:08:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14276 states. [2019-11-20 09:08:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14276 states to 14276 states and 44299 transitions. [2019-11-20 09:08:24,846 INFO L78 Accepts]: Start accepts. Automaton has 14276 states and 44299 transitions. Word has length 32 [2019-11-20 09:08:24,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:08:24,847 INFO L462 AbstractCegarLoop]: Abstraction has 14276 states and 44299 transitions. [2019-11-20 09:08:24,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 09:08:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 14276 states and 44299 transitions. [2019-11-20 09:08:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 09:08:24,873 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:08:24,873 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 09:08:24,874 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:08:24,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:08:24,882 INFO L82 PathProgramCache]: Analyzing trace with hash 958119185, now seen corresponding path program 1 times [2019-11-20 09:08:24,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:08:24,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264137155] [2019-11-20 09:08:24,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:08:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:08:25,070 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 09:08:25,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264137155] [2019-11-20 09:08:25,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:08:25,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 09:08:25,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26406534] [2019-11-20 09:08:25,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 09:08:25,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:08:25,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 09:08:25,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:08:25,073 INFO L87 Difference]: Start difference. First operand 14276 states and 44299 transitions. Second operand 5 states. [2019-11-20 09:08:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:08:25,467 INFO L93 Difference]: Finished difference Result 14276 states and 42112 transitions. [2019-11-20 09:08:25,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 09:08:25,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-11-20 09:08:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:08:25,534 INFO L225 Difference]: With dead ends: 14276 [2019-11-20 09:08:25,534 INFO L226 Difference]: Without dead ends: 12575 [2019-11-20 09:08:25,535 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 09:08:25,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12575 states. [2019-11-20 09:08:25,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12575 to 12575. [2019-11-20 09:08:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12575 states. [2019-11-20 09:08:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12575 states to 12575 states and 38062 transitions. [2019-11-20 09:08:25,964 INFO L78 Accepts]: Start accepts. Automaton has 12575 states and 38062 transitions. Word has length 33 [2019-11-20 09:08:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:08:25,965 INFO L462 AbstractCegarLoop]: Abstraction has 12575 states and 38062 transitions. [2019-11-20 09:08:25,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 09:08:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 12575 states and 38062 transitions. [2019-11-20 09:08:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 09:08:25,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:08:25,990 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 09:08:25,990 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:08:25,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:08:25,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1504930584, now seen corresponding path program 1 times [2019-11-20 09:08:25,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:08:25,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810937182] [2019-11-20 09:08:25,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:08:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:08:26,097 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 09:08:26,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810937182] [2019-11-20 09:08:26,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:08:26,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 09:08:26,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008642010] [2019-11-20 09:08:26,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 09:08:26,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:08:26,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 09:08:26,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 09:08:26,099 INFO L87 Difference]: Start difference. First operand 12575 states and 38062 transitions. Second operand 6 states. [2019-11-20 09:08:26,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:08:26,259 INFO L93 Difference]: Finished difference Result 8930 states and 24940 transitions. [2019-11-20 09:08:26,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 09:08:26,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-20 09:08:26,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:08:26,281 INFO L225 Difference]: With dead ends: 8930 [2019-11-20 09:08:26,282 INFO L226 Difference]: Without dead ends: 7472 [2019-11-20 09:08:26,282 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 09:08:26,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2019-11-20 09:08:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 7472. [2019-11-20 09:08:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7472 states. [2019-11-20 09:08:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7472 states to 7472 states and 21052 transitions. [2019-11-20 09:08:26,504 INFO L78 Accepts]: Start accepts. Automaton has 7472 states and 21052 transitions. Word has length 34 [2019-11-20 09:08:26,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:08:26,504 INFO L462 AbstractCegarLoop]: Abstraction has 7472 states and 21052 transitions. [2019-11-20 09:08:26,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 09:08:26,504 INFO L276 IsEmpty]: Start isEmpty. Operand 7472 states and 21052 transitions. [2019-11-20 09:08:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 09:08:26,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:08:26,703 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, 1] [2019-11-20 09:08:26,703 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:08:26,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:08:26,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1877977783, now seen corresponding path program 1 times [2019-11-20 09:08:26,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:08:26,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807435113] [2019-11-20 09:08:26,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:08:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:08:26,862 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 09:08:26,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807435113] [2019-11-20 09:08:26,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:08:26,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 09:08:26,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178137730] [2019-11-20 09:08:26,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 09:08:26,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:08:26,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 09:08:26,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 09:08:26,863 INFO L87 Difference]: Start difference. First operand 7472 states and 21052 transitions. Second operand 7 states. [2019-11-20 09:08:27,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:08:27,053 INFO L93 Difference]: Finished difference Result 12089 states and 34012 transitions. [2019-11-20 09:08:27,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 09:08:27,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-20 09:08:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:08:27,075 INFO L225 Difference]: With dead ends: 12089 [2019-11-20 09:08:27,075 INFO L226 Difference]: Without dead ends: 7472 [2019-11-20 09:08:27,076 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 09:08:27,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2019-11-20 09:08:27,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 7229. [2019-11-20 09:08:27,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7229 states. [2019-11-20 09:08:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7229 states to 7229 states and 20323 transitions. [2019-11-20 09:08:27,255 INFO L78 Accepts]: Start accepts. Automaton has 7229 states and 20323 transitions. Word has length 35 [2019-11-20 09:08:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:08:27,255 INFO L462 AbstractCegarLoop]: Abstraction has 7229 states and 20323 transitions. [2019-11-20 09:08:27,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 09:08:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 7229 states and 20323 transitions. [2019-11-20 09:08:27,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 09:08:27,266 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:08:27,266 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, 1] [2019-11-20 09:08:27,266 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:08:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:08:27,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1704730091, now seen corresponding path program 2 times [2019-11-20 09:08:27,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:08:27,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214939874] [2019-11-20 09:08:27,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:08:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:08:27,383 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 09:08:27,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214939874] [2019-11-20 09:08:27,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:08:27,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 09:08:27,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978237387] [2019-11-20 09:08:27,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 09:08:27,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:08:27,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 09:08:27,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 09:08:27,384 INFO L87 Difference]: Start difference. First operand 7229 states and 20323 transitions. Second operand 7 states. [2019-11-20 09:08:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:08:27,580 INFO L93 Difference]: Finished difference Result 11603 states and 32716 transitions. [2019-11-20 09:08:27,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 09:08:27,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-20 09:08:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:08:27,600 INFO L225 Difference]: With dead ends: 11603 [2019-11-20 09:08:27,600 INFO L226 Difference]: Without dead ends: 6437 [2019-11-20 09:08:27,601 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 09:08:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6437 states. [2019-11-20 09:08:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6437 to 6437. [2019-11-20 09:08:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6437 states. [2019-11-20 09:08:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6437 states to 6437 states and 18019 transitions. [2019-11-20 09:08:27,753 INFO L78 Accepts]: Start accepts. Automaton has 6437 states and 18019 transitions. Word has length 35 [2019-11-20 09:08:27,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:08:27,753 INFO L462 AbstractCegarLoop]: Abstraction has 6437 states and 18019 transitions. [2019-11-20 09:08:27,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 09:08:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 6437 states and 18019 transitions. [2019-11-20 09:08:27,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 09:08:27,762 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:08:27,762 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, 1] [2019-11-20 09:08:27,762 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:08:27,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:08:27,763 INFO L82 PathProgramCache]: Analyzing trace with hash 630140703, now seen corresponding path program 3 times [2019-11-20 09:08:27,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:08:27,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601651023] [2019-11-20 09:08:27,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:08:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:08:27,899 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 09:08:27,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601651023] [2019-11-20 09:08:27,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:08:27,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 09:08:27,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343011346] [2019-11-20 09:08:27,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 09:08:27,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:08:27,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 09:08:27,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-20 09:08:27,901 INFO L87 Difference]: Start difference. First operand 6437 states and 18019 transitions. Second operand 8 states. [2019-11-20 09:08:28,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:08:28,058 INFO L93 Difference]: Finished difference Result 11054 states and 30979 transitions. [2019-11-20 09:08:28,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 09:08:28,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2019-11-20 09:08:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:08:28,072 INFO L225 Difference]: With dead ends: 11054 [2019-11-20 09:08:28,072 INFO L226 Difference]: Without dead ends: 6356 [2019-11-20 09:08:28,072 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-20 09:08:28,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6356 states. [2019-11-20 09:08:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6356 to 6356. [2019-11-20 09:08:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6356 states. [2019-11-20 09:08:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 17857 transitions. [2019-11-20 09:08:28,222 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 17857 transitions. Word has length 35 [2019-11-20 09:08:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:08:28,223 INFO L462 AbstractCegarLoop]: Abstraction has 6356 states and 17857 transitions. [2019-11-20 09:08:28,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 09:08:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 17857 transitions. [2019-11-20 09:08:28,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 09:08:28,231 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:08:28,231 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, 1] [2019-11-20 09:08:28,231 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:08:28,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:08:28,232 INFO L82 PathProgramCache]: Analyzing trace with hash -445570453, now seen corresponding path program 4 times [2019-11-20 09:08:28,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:08:28,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269941569] [2019-11-20 09:08:28,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:08:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:08:28,365 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 09:08:28,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269941569] [2019-11-20 09:08:28,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:08:28,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 09:08:28,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036626391] [2019-11-20 09:08:28,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 09:08:28,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:08:28,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 09:08:28,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 09:08:28,366 INFO L87 Difference]: Start difference. First operand 6356 states and 17857 transitions. Second operand 7 states. [2019-11-20 09:08:28,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:08:28,515 INFO L93 Difference]: Finished difference Result 4898 states and 13483 transitions. [2019-11-20 09:08:28,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 09:08:28,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-20 09:08:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:08:28,518 INFO L225 Difference]: With dead ends: 4898 [2019-11-20 09:08:28,518 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 09:08:28,518 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 09:08:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 09:08:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 09:08:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 09:08:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 09:08:28,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-11-20 09:08:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:08:28,520 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 09:08:28,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 09:08:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 09:08:28,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 09:08:28,523 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 09:08:28,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:08:28 BasicIcfg [2019-11-20 09:08:28,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 09:08:28,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 09:08:28,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 09:08:28,526 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 09:08:28,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:08:19" (3/4) ... [2019-11-20 09:08:28,530 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 09:08:28,551 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-20 09:08:28,558 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-20 09:08:28,558 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-20 09:08:28,562 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-20 09:08:28,563 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 09:08:28,563 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 09:08:28,617 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_87129030-dc02-467a-9339-7f3fd9868b9d/bin/uautomizer/witness.graphml [2019-11-20 09:08:28,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 09:08:28,620 INFO L168 Benchmark]: Toolchain (without parser) took 10545.60 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 642.3 MB). Free memory was 946.0 MB in the beginning and 962.1 MB in the end (delta: -16.1 MB). Peak memory consumption was 626.2 MB. Max. memory is 11.5 GB. [2019-11-20 09:08:28,620 INFO L168 Benchmark]: CDTParser took 0.51 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 09:08:28,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -119.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 09:08:28,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.94 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:08:28,626 INFO L168 Benchmark]: Boogie Preprocessor took 45.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:08:28,626 INFO L168 Benchmark]: RCFGBuilder took 438.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:08:28,627 INFO L168 Benchmark]: TraceAbstraction took 9234.01 ms. Allocated memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: 537.4 MB). Free memory was 1.0 GB in the beginning and 967.2 MB in the end (delta: 68.8 MB). Peak memory consumption was 606.2 MB. Max. memory is 11.5 GB. [2019-11-20 09:08:28,627 INFO L168 Benchmark]: Witness Printer took 92.54 ms. Allocated memory is still 1.7 GB. Free memory was 967.2 MB in the beginning and 962.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2019-11-20 09:08:28,629 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 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 664.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -119.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.94 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 438.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9234.01 ms. Allocated memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: 537.4 MB). Free memory was 1.0 GB in the beginning and 967.2 MB in the end (delta: 68.8 MB). Peak memory consumption was 606.2 MB. Max. memory is 11.5 GB. * Witness Printer took 92.54 ms. Allocated memory is still 1.7 GB. Free memory was 967.2 MB in the beginning and 962.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 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, 91 locations, 1 error locations. Result: SAFE, OverallTime: 9.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 737 SDtfs, 901 SDslu, 1973 SDs, 0 SdLazy, 264 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31745occurred 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, 243 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 21714 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...