./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_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_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/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 e526d74601a089e7b16096a17c73a44c48d37c41 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:56:07,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:56:07,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:56:07,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:56:07,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:56:07,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:56:07,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:56:07,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:56:07,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:56:07,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:56:07,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:56:07,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:56:07,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:56:07,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:56:07,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:56:07,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:56:07,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:56:07,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:56:07,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:56:07,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:56:07,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:56:08,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:56:08,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:56:08,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:56:08,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:56:08,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:56:08,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:56:08,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:56:08,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:56:08,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:56:08,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:56:08,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:56:08,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:56:08,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:56:08,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:56:08,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:56:08,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:56:08,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:56:08,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:56:08,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:56:08,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:56:08,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 10:56:08,027 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:56:08,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:56:08,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:56:08,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:56:08,028 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:56:08,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:56:08,033 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:56:08,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:56:08,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:56:08,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:56:08,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:56:08,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:56:08,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:56:08,035 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:56:08,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:56:08,036 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:56:08,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:56:08,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:56:08,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:56:08,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:56:08,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:56:08,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:56:08,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:56:08,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:56:08,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:56:08,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:56:08,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:56:08,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:56:08,039 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_9c131014-a63d-4751-95bf-62d3d9f8ff48/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 -> e526d74601a089e7b16096a17c73a44c48d37c41 [2019-11-20 10:56:08,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:56:08,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:56:08,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:56:08,232 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:56:08,232 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:56:08,233 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2019-11-20 10:56:08,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/data/93b2208e5/8769edf4738b40d29f58a9b35ee25ac0/FLAG68cc9d0d8 [2019-11-20 10:56:08,820 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:56:08,823 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2019-11-20 10:56:08,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/data/93b2208e5/8769edf4738b40d29f58a9b35ee25ac0/FLAG68cc9d0d8 [2019-11-20 10:56:09,130 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/data/93b2208e5/8769edf4738b40d29f58a9b35ee25ac0 [2019-11-20 10:56:09,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:56:09,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:56:09,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:56:09,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:56:09,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:56:09,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc304e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09, skipping insertion in model container [2019-11-20 10:56:09,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,147 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:56:09,188 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:56:09,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:56:09,707 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:56:09,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:56:09,859 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:56:09,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09 WrapperNode [2019-11-20 10:56:09,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:56:09,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:56:09,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:56:09,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:56:09,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:56:09,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:56:09,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:56:09,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:56:09,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (1/1) ... [2019-11-20 10:56:09,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:56:09,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:56:09,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:56:09,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:56:09,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/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 10:56:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 10:56:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-20 10:56:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 10:56:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 10:56:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-20 10:56:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-20 10:56:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-20 10:56:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-20 10:56:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-20 10:56:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-20 10:56:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-20 10:56:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-20 10:56:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-20 10:56:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:56:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:56:10,032 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 10:56:10,526 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:56:10,526 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 10:56:10,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:10 BoogieIcfgContainer [2019-11-20 10:56:10,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:56:10,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:56:10,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:56:10,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:56:10,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:56:09" (1/3) ... [2019-11-20 10:56:10,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3550e0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:10, skipping insertion in model container [2019-11-20 10:56:10,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:09" (2/3) ... [2019-11-20 10:56:10,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3550e0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:10, skipping insertion in model container [2019-11-20 10:56:10,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:10" (3/3) ... [2019-11-20 10:56:10,538 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.oepc.i [2019-11-20 10:56:10,613 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork7_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,613 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork7_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,614 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork7_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,614 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork7_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,615 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork7_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,615 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork7_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,615 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,615 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,616 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,616 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,616 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,617 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,617 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork11_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,617 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork11_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,618 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork11_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,618 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork11_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,622 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork11_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,622 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork11_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,622 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,623 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,623 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,623 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,624 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,624 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,625 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,625 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,625 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,625 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,626 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,627 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,627 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,627 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,627 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,628 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,628 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,628 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,629 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork9_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,630 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork9_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,630 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork9_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,630 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork9_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,631 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork9_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,631 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork9_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,632 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,632 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,632 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,633 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,633 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,633 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,634 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,634 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,634 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,634 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,635 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,635 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,636 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,636 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,636 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,636 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,637 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,637 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,637 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork6_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,637 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork6_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,637 WARN L315 ript$VariableManager]: TermVariabe P3Thread2of3ForFork6_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,638 WARN L315 ript$VariableManager]: TermVariabe P3Thread2of3ForFork6_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,639 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,639 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,639 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork10_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,640 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork10_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,640 WARN L315 ript$VariableManager]: TermVariabe P3Thread3of3ForFork10_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,640 WARN L315 ript$VariableManager]: TermVariabe P3Thread3of3ForFork10_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,640 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork10_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,641 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork10_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:56:10,674 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 10:56:10,674 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:56:10,682 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 10:56:10,694 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 10:56:10,715 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:56:10,715 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:56:10,715 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:56:10,715 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:56:10,715 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:56:10,715 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:56:10,716 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:56:10,716 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:56:10,729 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 121 places, 93 transitions [2019-11-20 11:02:11,854 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 422273 states. [2019-11-20 11:02:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 422273 states. [2019-11-20 11:02:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 11:02:12,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:02:12,080 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, 1] [2019-11-20 11:02:12,081 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:02:12,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:02:12,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1448452273, now seen corresponding path program 1 times [2019-11-20 11:02:12,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:02:12,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514962828] [2019-11-20 11:02:12,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:02:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:02:12,443 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 11:02:12,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514962828] [2019-11-20 11:02:12,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:02:12,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 11:02:12,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615076181] [2019-11-20 11:02:12,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 11:02:12,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:02:12,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 11:02:12,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 11:02:12,466 INFO L87 Difference]: Start difference. First operand 422273 states. Second operand 4 states. [2019-11-20 11:02:14,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:02:14,567 INFO L93 Difference]: Finished difference Result 441470 states and 1720513 transitions. [2019-11-20 11:02:14,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 11:02:14,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-11-20 11:02:14,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:02:15,312 INFO L225 Difference]: With dead ends: 441470 [2019-11-20 11:02:15,312 INFO L226 Difference]: Without dead ends: 172874 [2019-11-20 11:02:15,314 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 11:02:31,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172874 states. [2019-11-20 11:02:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172874 to 172874. [2019-11-20 11:02:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172874 states. [2019-11-20 11:02:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172874 states to 172874 states and 667756 transitions. [2019-11-20 11:02:35,521 INFO L78 Accepts]: Start accepts. Automaton has 172874 states and 667756 transitions. Word has length 36 [2019-11-20 11:02:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:02:35,522 INFO L462 AbstractCegarLoop]: Abstraction has 172874 states and 667756 transitions. [2019-11-20 11:02:35,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 11:02:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 172874 states and 667756 transitions. [2019-11-20 11:02:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 11:02:35,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:02:35,755 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, 1, 1] [2019-11-20 11:02:35,755 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:02:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:02:35,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1929315867, now seen corresponding path program 1 times [2019-11-20 11:02:35,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:02:35,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702100455] [2019-11-20 11:02:35,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:02:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:02:35,965 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 11:02:35,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702100455] [2019-11-20 11:02:35,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:02:35,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 11:02:35,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085907164] [2019-11-20 11:02:35,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 11:02:35,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:02:35,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 11:02:35,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:02:35,968 INFO L87 Difference]: Start difference. First operand 172874 states and 667756 transitions. Second operand 5 states. [2019-11-20 11:02:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:02:38,806 INFO L93 Difference]: Finished difference Result 186725 states and 698860 transitions. [2019-11-20 11:02:38,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 11:02:38,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2019-11-20 11:02:38,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:02:39,290 INFO L225 Difference]: With dead ends: 186725 [2019-11-20 11:02:39,291 INFO L226 Difference]: Without dead ends: 166070 [2019-11-20 11:02:39,291 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 11:02:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166070 states. [2019-11-20 11:02:44,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166070 to 166070. [2019-11-20 11:02:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166070 states. [2019-11-20 11:02:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166070 states to 166070 states and 636004 transitions. [2019-11-20 11:02:44,685 INFO L78 Accepts]: Start accepts. Automaton has 166070 states and 636004 transitions. Word has length 37 [2019-11-20 11:02:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:02:44,685 INFO L462 AbstractCegarLoop]: Abstraction has 166070 states and 636004 transitions. [2019-11-20 11:02:44,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 11:02:44,685 INFO L276 IsEmpty]: Start isEmpty. Operand 166070 states and 636004 transitions. [2019-11-20 11:02:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 11:02:44,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:02:44,830 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, 1, 1, 1] [2019-11-20 11:02:44,830 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:02:44,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:02:44,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1143265519, now seen corresponding path program 1 times [2019-11-20 11:02:44,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:02:44,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957935921] [2019-11-20 11:02:44,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:02:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:02:44,942 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 11:02:44,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957935921] [2019-11-20 11:02:44,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:02:44,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 11:02:44,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301002881] [2019-11-20 11:02:44,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 11:02:44,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:02:44,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 11:02:44,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 11:02:44,944 INFO L87 Difference]: Start difference. First operand 166070 states and 636004 transitions. Second operand 6 states. [2019-11-20 11:02:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:02:46,917 INFO L93 Difference]: Finished difference Result 155135 states and 566020 transitions. [2019-11-20 11:02:46,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 11:02:46,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-11-20 11:02:46,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:02:47,252 INFO L225 Difference]: With dead ends: 155135 [2019-11-20 11:02:47,252 INFO L226 Difference]: Without dead ends: 135452 [2019-11-20 11:02:47,252 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 11:02:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135452 states. [2019-11-20 11:02:51,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135452 to 135452. [2019-11-20 11:02:51,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135452 states. [2019-11-20 11:02:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135452 states to 135452 states and 503326 transitions. [2019-11-20 11:02:51,639 INFO L78 Accepts]: Start accepts. Automaton has 135452 states and 503326 transitions. Word has length 38 [2019-11-20 11:02:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:02:51,639 INFO L462 AbstractCegarLoop]: Abstraction has 135452 states and 503326 transitions. [2019-11-20 11:02:51,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 11:02:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 135452 states and 503326 transitions. [2019-11-20 11:02:51,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-20 11:02:51,748 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:02:51,748 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, 1, 1, 1, 1] [2019-11-20 11:02:51,748 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:02:51,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:02:51,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1843194859, now seen corresponding path program 1 times [2019-11-20 11:02:51,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:02:51,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748491368] [2019-11-20 11:02:51,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:02:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:02:51,847 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 11:02:51,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748491368] [2019-11-20 11:02:51,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:02:51,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 11:02:51,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016514338] [2019-11-20 11:02:51,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 11:02:51,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:02:51,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 11:02:51,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 11:02:51,849 INFO L87 Difference]: Start difference. First operand 135452 states and 503326 transitions. Second operand 7 states. [2019-11-20 11:02:52,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:02:52,425 INFO L93 Difference]: Finished difference Result 89525 states and 310870 transitions. [2019-11-20 11:02:52,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 11:02:52,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-11-20 11:02:52,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:02:52,589 INFO L225 Difference]: With dead ends: 89525 [2019-11-20 11:02:52,590 INFO L226 Difference]: Without dead ends: 74216 [2019-11-20 11:02:52,595 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-20 11:02:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74216 states. [2019-11-20 11:02:55,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74216 to 74216. [2019-11-20 11:02:55,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74216 states. [2019-11-20 11:02:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74216 states to 74216 states and 258382 transitions. [2019-11-20 11:02:55,267 INFO L78 Accepts]: Start accepts. Automaton has 74216 states and 258382 transitions. Word has length 39 [2019-11-20 11:02:55,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:02:55,268 INFO L462 AbstractCegarLoop]: Abstraction has 74216 states and 258382 transitions. [2019-11-20 11:02:55,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 11:02:55,268 INFO L276 IsEmpty]: Start isEmpty. Operand 74216 states and 258382 transitions. [2019-11-20 11:02:55,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-20 11:02:55,336 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:02:55,336 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, 1, 1, 1, 1, 1] [2019-11-20 11:02:55,336 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:02:55,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:02:55,337 INFO L82 PathProgramCache]: Analyzing trace with hash -775592592, now seen corresponding path program 1 times [2019-11-20 11:02:55,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:02:55,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572204390] [2019-11-20 11:02:55,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:02:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:02:55,506 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 11:02:55,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572204390] [2019-11-20 11:02:55,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:02:55,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 11:02:55,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928645873] [2019-11-20 11:02:55,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 11:02:55,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:02:55,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 11:02:55,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-20 11:02:55,509 INFO L87 Difference]: Start difference. First operand 74216 states and 258382 transitions. Second operand 8 states. [2019-11-20 11:02:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:02:56,117 INFO L93 Difference]: Finished difference Result 118685 states and 411715 transitions. [2019-11-20 11:02:56,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 11:02:56,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2019-11-20 11:02:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:02:56,233 INFO L225 Difference]: With dead ends: 118685 [2019-11-20 11:02:56,233 INFO L226 Difference]: Without dead ends: 64676 [2019-11-20 11:02:56,234 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-20 11:02:57,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64676 states. [2019-11-20 11:02:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64676 to 64676. [2019-11-20 11:02:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64676 states. [2019-11-20 11:02:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64676 states to 64676 states and 222544 transitions. [2019-11-20 11:02:58,260 INFO L78 Accepts]: Start accepts. Automaton has 64676 states and 222544 transitions. Word has length 40 [2019-11-20 11:02:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:02:58,260 INFO L462 AbstractCegarLoop]: Abstraction has 64676 states and 222544 transitions. [2019-11-20 11:02:58,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 11:02:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 64676 states and 222544 transitions. [2019-11-20 11:02:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-20 11:02:58,303 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:02:58,303 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, 1, 1, 1, 1, 1] [2019-11-20 11:02:58,303 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:02:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:02:58,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1699213654, now seen corresponding path program 2 times [2019-11-20 11:02:58,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:02:58,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216658500] [2019-11-20 11:02:58,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:02:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:02:58,419 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 11:02:58,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216658500] [2019-11-20 11:02:58,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:02:58,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 11:02:58,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550285483] [2019-11-20 11:02:58,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 11:02:58,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:02:58,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 11:02:58,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 11:02:58,421 INFO L87 Difference]: Start difference. First operand 64676 states and 222544 transitions. Second operand 7 states. [2019-11-20 11:02:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:02:58,931 INFO L93 Difference]: Finished difference Result 106229 states and 366886 transitions. [2019-11-20 11:02:58,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 11:02:58,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-20 11:02:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:02:59,040 INFO L225 Difference]: With dead ends: 106229 [2019-11-20 11:02:59,040 INFO L226 Difference]: Without dead ends: 59384 [2019-11-20 11:02:59,044 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 11:02:59,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59384 states. [2019-11-20 11:03:00,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59384 to 59384. [2019-11-20 11:03:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59384 states. [2019-11-20 11:03:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59384 states to 59384 states and 205426 transitions. [2019-11-20 11:03:00,866 INFO L78 Accepts]: Start accepts. Automaton has 59384 states and 205426 transitions. Word has length 40 [2019-11-20 11:03:00,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:03:00,867 INFO L462 AbstractCegarLoop]: Abstraction has 59384 states and 205426 transitions. [2019-11-20 11:03:00,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 11:03:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand 59384 states and 205426 transitions. [2019-11-20 11:03:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-20 11:03:00,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:03:00,905 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, 1, 1, 1, 1, 1] [2019-11-20 11:03:00,905 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:03:00,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:03:00,905 INFO L82 PathProgramCache]: Analyzing trace with hash 929620746, now seen corresponding path program 3 times [2019-11-20 11:03:00,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:03:00,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335926179] [2019-11-20 11:03:00,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:03:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:03:01,040 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 11:03:01,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335926179] [2019-11-20 11:03:01,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:03:01,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 11:03:01,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225552666] [2019-11-20 11:03:01,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 11:03:01,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:03:01,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 11:03:01,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 11:03:01,042 INFO L87 Difference]: Start difference. First operand 59384 states and 205426 transitions. Second operand 7 states. [2019-11-20 11:03:01,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:03:01,552 INFO L93 Difference]: Finished difference Result 98750 states and 343207 transitions. [2019-11-20 11:03:01,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 11:03:01,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-20 11:03:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:03:01,656 INFO L225 Difference]: With dead ends: 98750 [2019-11-20 11:03:01,656 INFO L226 Difference]: Without dead ends: 55901 [2019-11-20 11:03:01,657 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 11:03:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55901 states. [2019-11-20 11:03:03,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55901 to 55901. [2019-11-20 11:03:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55901 states. [2019-11-20 11:03:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55901 states to 55901 states and 194896 transitions. [2019-11-20 11:03:03,354 INFO L78 Accepts]: Start accepts. Automaton has 55901 states and 194896 transitions. Word has length 40 [2019-11-20 11:03:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:03:03,354 INFO L462 AbstractCegarLoop]: Abstraction has 55901 states and 194896 transitions. [2019-11-20 11:03:03,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 11:03:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 55901 states and 194896 transitions. [2019-11-20 11:03:03,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-20 11:03:03,388 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:03:03,389 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, 1, 1, 1, 1, 1] [2019-11-20 11:03:03,389 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:03:03,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:03:03,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1453487960, now seen corresponding path program 4 times [2019-11-20 11:03:03,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:03:03,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008345046] [2019-11-20 11:03:03,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:03:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:03:03,490 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 11:03:03,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008345046] [2019-11-20 11:03:03,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:03:03,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 11:03:03,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027824050] [2019-11-20 11:03:03,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 11:03:03,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:03:03,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 11:03:03,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 11:03:03,492 INFO L87 Difference]: Start difference. First operand 55901 states and 194896 transitions. Second operand 7 states. [2019-11-20 11:03:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:03:03,829 INFO L93 Difference]: Finished difference Result 42779 states and 146782 transitions. [2019-11-20 11:03:03,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 11:03:03,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-20 11:03:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:03:03,829 INFO L225 Difference]: With dead ends: 42779 [2019-11-20 11:03:03,829 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 11:03:03,830 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 11:03:03,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 11:03:03,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 11:03:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 11:03:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 11:03:03,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2019-11-20 11:03:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:03:03,831 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 11:03:03,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 11:03:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 11:03:03,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 11:03:03,833 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 11:03:03,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:03:03 BasicIcfg [2019-11-20 11:03:03,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:03:03,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:03:03,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:03:03,835 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:03:03,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:10" (3/4) ... [2019-11-20 11:03:03,837 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 11:03:03,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-20 11:03:03,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-20 11:03:03,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-20 11:03:03,844 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-20 11:03:03,848 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-20 11:03:03,849 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 11:03:03,849 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 11:03:03,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9c131014-a63d-4751-95bf-62d3d9f8ff48/bin/uautomizer/witness.graphml [2019-11-20 11:03:03,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:03:03,888 INFO L168 Benchmark]: Toolchain (without parser) took 414754.21 ms. Allocated memory was 1.0 GB in the beginning and 6.6 GB in the end (delta: 5.6 GB). Free memory was 946.0 MB in the beginning and 3.4 GB in the end (delta: -2.4 GB). Peak memory consumption was 3.1 GB. Max. memory is 11.5 GB. [2019-11-20 11:03:03,888 INFO L168 Benchmark]: CDTParser took 0.25 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 11:03:03,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -171.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-20 11:03:03,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:03:03,890 INFO L168 Benchmark]: Boogie Preprocessor took 29.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:03:03,890 INFO L168 Benchmark]: RCFGBuilder took 585.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:03:03,891 INFO L168 Benchmark]: TraceAbstraction took 413305.38 ms. Allocated memory was 1.2 GB in the beginning and 6.6 GB in the end (delta: 5.4 GB). Free memory was 1.1 GB in the beginning and 3.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 3.1 GB. Max. memory is 11.5 GB. [2019-11-20 11:03:03,891 INFO L168 Benchmark]: Witness Printer took 51.71 ms. Allocated memory is still 6.6 GB. Free memory was 3.4 GB in the beginning and 3.4 GB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. [2019-11-20 11:03:03,894 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 727.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -171.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 585.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 413305.38 ms. Allocated memory was 1.2 GB in the beginning and 6.6 GB in the end (delta: 5.4 GB). Free memory was 1.1 GB in the beginning and 3.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 3.1 GB. Max. memory is 11.5 GB. * Witness Printer took 51.71 ms. Allocated memory is still 6.6 GB. Free memory was 3.4 GB in the beginning and 3.4 GB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 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 17 procedures, 113 locations, 1 error locations. Result: SAFE, OverallTime: 413.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 925 SDtfs, 1602 SDslu, 2584 SDs, 0 SdLazy, 403 SolverSat, 234 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=422273occurred 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: 38.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 302 ConstructedInterpolants, 0 QuantifiedInterpolants, 34178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...