./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/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 eca14b1c5c5e18905aebb27c71c7fb4b781dcc00 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:07:32,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:07:32,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:07:32,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:07:32,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:07:32,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:07:32,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:07:32,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:07:32,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:07:32,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:07:32,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:07:32,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:07:32,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:07:32,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:07:32,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:07:32,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:07:32,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:07:32,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:07:32,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:07:32,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:07:32,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:07:32,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:07:32,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:07:32,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:07:32,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:07:32,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:07:32,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:07:32,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:07:32,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:07:32,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:07:32,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:07:32,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:07:32,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:07:32,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:07:32,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:07:32,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:07:32,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:07:32,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:07:32,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:07:32,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:07:32,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:07:32,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 10:07:32,636 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:07:32,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:07:32,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:07:32,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:07:32,637 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:07:32,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:07:32,637 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:07:32,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:07:32,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:07:32,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:07:32,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:07:32,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:07:32,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:07:32,638 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:07:32,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:07:32,638 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:07:32,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:07:32,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:07:32,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:07:32,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:07:32,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:07:32,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:07:32,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:07:32,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:07:32,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:07:32,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:07:32,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:07:32,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:07:32,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:07:32,640 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_3013444a-dda3-4ab3-b6df-17d5709cf225/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 -> eca14b1c5c5e18905aebb27c71c7fb4b781dcc00 [2019-12-07 10:07:32,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:07:32,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:07:32,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:07:32,750 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:07:32,751 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:07:32,751 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2019-12-07 10:07:32,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/data/2a3a1fea5/ea71e03b60c944219f08317032352b66/FLAG8e197f344 [2019-12-07 10:07:33,244 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:07:33,245 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2019-12-07 10:07:33,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/data/2a3a1fea5/ea71e03b60c944219f08317032352b66/FLAG8e197f344 [2019-12-07 10:07:33,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/data/2a3a1fea5/ea71e03b60c944219f08317032352b66 [2019-12-07 10:07:33,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:07:33,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:07:33,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:07:33,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:07:33,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:07:33,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f04252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33, skipping insertion in model container [2019-12-07 10:07:33,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:07:33,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:07:33,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:07:33,584 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:07:33,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:07:33,672 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:07:33,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33 WrapperNode [2019-12-07 10:07:33,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:07:33,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:07:33,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:07:33,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:07:33,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:07:33,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:07:33,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:07:33,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:07:33,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (1/1) ... [2019-12-07 10:07:33,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:07:33,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:07:33,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:07:33,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:07:33,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/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 [2019-12-07 10:07:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:07:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 10:07:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:07:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:07:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 10:07:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 10:07:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 10:07:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 10:07:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 10:07:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 10:07:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-12-07 10:07:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-12-07 10:07:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 10:07:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:07:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:07:33,780 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 10:07:33,957 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:07:33,958 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 10:07:33,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:33 BoogieIcfgContainer [2019-12-07 10:07:33,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:07:33,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:07:33,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:07:33,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:07:33,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:07:33" (1/3) ... [2019-12-07 10:07:33,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0bf645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:07:33, skipping insertion in model container [2019-12-07 10:07:33,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:33" (2/3) ... [2019-12-07 10:07:33,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0bf645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:07:33, skipping insertion in model container [2019-12-07 10:07:33,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:33" (3/3) ... [2019-12-07 10:07:33,963 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2019-12-07 10:07:33,969 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 10:07:33,969 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:07:33,974 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:07:33,974 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 10:07:33,992 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,993 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,993 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,993 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,993 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,993 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,993 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,993 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,994 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,994 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,994 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,994 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,994 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,994 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,994 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,994 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,995 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,995 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,995 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,995 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,995 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,995 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,995 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:33,995 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:34,009 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 10:07:34,021 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:07:34,021 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:07:34,021 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:07:34,021 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:07:34,021 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:07:34,021 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:07:34,022 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:07:34,022 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:07:34,030 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 64 transitions [2019-12-07 10:07:34,031 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 64 transitions [2019-12-07 10:07:34,059 INFO L134 PetriNetUnfolder]: 1/60 cut-off events. [2019-12-07 10:07:34,059 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 10:07:34,063 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs. 12/70 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 10:07:34,065 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 64 transitions [2019-12-07 10:07:34,076 INFO L134 PetriNetUnfolder]: 1/60 cut-off events. [2019-12-07 10:07:34,076 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 10:07:34,077 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs. 12/70 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 10:07:34,079 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-12-07 10:07:34,079 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 10:07:34,954 INFO L206 etLargeBlockEncoding]: Checked pairs total: 721 [2019-12-07 10:07:34,955 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2019-12-07 10:07:34,958 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 19 transitions [2019-12-07 10:07:34,972 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 94 states. [2019-12-07 10:07:34,973 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2019-12-07 10:07:34,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 10:07:34,980 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:34,980 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:34,980 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:34,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:34,985 INFO L82 PathProgramCache]: Analyzing trace with hash -989464989, now seen corresponding path program 1 times [2019-12-07 10:07:34,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:34,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242842086] [2019-12-07 10:07:34,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:35,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242842086] [2019-12-07 10:07:35,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:35,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 10:07:35,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718106630] [2019-12-07 10:07:35,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:07:35,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:35,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:07:35,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:07:35,214 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2019-12-07 10:07:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:35,244 INFO L93 Difference]: Finished difference Result 124 states and 283 transitions. [2019-12-07 10:07:35,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:07:35,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 10:07:35,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:35,254 INFO L225 Difference]: With dead ends: 124 [2019-12-07 10:07:35,254 INFO L226 Difference]: Without dead ends: 92 [2019-12-07 10:07:35,255 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:07:35,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-12-07 10:07:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2019-12-07 10:07:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-12-07 10:07:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 194 transitions. [2019-12-07 10:07:35,286 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 194 transitions. Word has length 10 [2019-12-07 10:07:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:35,287 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 194 transitions. [2019-12-07 10:07:35,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:07:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 194 transitions. [2019-12-07 10:07:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:07:35,288 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:35,288 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:35,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:35,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1170715911, now seen corresponding path program 1 times [2019-12-07 10:07:35,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:35,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670673739] [2019-12-07 10:07:35,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:35,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670673739] [2019-12-07 10:07:35,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:35,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:07:35,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386171361] [2019-12-07 10:07:35,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:35,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:35,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:35,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:35,350 INFO L87 Difference]: Start difference. First operand 86 states and 194 transitions. Second operand 4 states. [2019-12-07 10:07:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:35,363 INFO L93 Difference]: Finished difference Result 80 states and 175 transitions. [2019-12-07 10:07:35,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:35,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 10:07:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:35,365 INFO L225 Difference]: With dead ends: 80 [2019-12-07 10:07:35,365 INFO L226 Difference]: Without dead ends: 76 [2019-12-07 10:07:35,365 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:35,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-12-07 10:07:35,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-12-07 10:07:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 10:07:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 163 transitions. [2019-12-07 10:07:35,371 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 163 transitions. Word has length 11 [2019-12-07 10:07:35,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:35,372 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 163 transitions. [2019-12-07 10:07:35,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:35,372 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 163 transitions. [2019-12-07 10:07:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 10:07:35,373 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:35,373 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:35,373 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:35,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1709122238, now seen corresponding path program 1 times [2019-12-07 10:07:35,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:35,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025692473] [2019-12-07 10:07:35,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:35,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025692473] [2019-12-07 10:07:35,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:35,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:07:35,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350212342] [2019-12-07 10:07:35,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:35,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:35,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:35,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:35,422 INFO L87 Difference]: Start difference. First operand 76 states and 163 transitions. Second operand 4 states. [2019-12-07 10:07:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:35,437 INFO L93 Difference]: Finished difference Result 78 states and 162 transitions. [2019-12-07 10:07:35,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:35,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-07 10:07:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:35,438 INFO L225 Difference]: With dead ends: 78 [2019-12-07 10:07:35,438 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 10:07:35,438 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 10:07:35,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2019-12-07 10:07:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 10:07:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 124 transitions. [2019-12-07 10:07:35,443 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 124 transitions. Word has length 12 [2019-12-07 10:07:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:35,443 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 124 transitions. [2019-12-07 10:07:35,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 124 transitions. [2019-12-07 10:07:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 10:07:35,444 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:35,444 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:35,444 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:35,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1707570409, now seen corresponding path program 1 times [2019-12-07 10:07:35,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:35,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039739623] [2019-12-07 10:07:35,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:35,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039739623] [2019-12-07 10:07:35,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:35,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:07:35,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376794745] [2019-12-07 10:07:35,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:35,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:35,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:35,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:35,495 INFO L87 Difference]: Start difference. First operand 58 states and 124 transitions. Second operand 4 states. [2019-12-07 10:07:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:35,506 INFO L93 Difference]: Finished difference Result 64 states and 133 transitions. [2019-12-07 10:07:35,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:35,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-07 10:07:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:35,507 INFO L225 Difference]: With dead ends: 64 [2019-12-07 10:07:35,507 INFO L226 Difference]: Without dead ends: 64 [2019-12-07 10:07:35,508 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:35,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-07 10:07:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2019-12-07 10:07:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 10:07:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 119 transitions. [2019-12-07 10:07:35,513 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 119 transitions. Word has length 12 [2019-12-07 10:07:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:35,513 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 119 transitions. [2019-12-07 10:07:35,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 119 transitions. [2019-12-07 10:07:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 10:07:35,514 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:35,514 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:35,515 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:35,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:35,515 INFO L82 PathProgramCache]: Analyzing trace with hash 203952685, now seen corresponding path program 1 times [2019-12-07 10:07:35,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:35,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372362090] [2019-12-07 10:07:35,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:35,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372362090] [2019-12-07 10:07:35,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:35,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:07:35,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951481798] [2019-12-07 10:07:35,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:07:35,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:35,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:07:35,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:07:35,562 INFO L87 Difference]: Start difference. First operand 56 states and 119 transitions. Second operand 5 states. [2019-12-07 10:07:35,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:35,579 INFO L93 Difference]: Finished difference Result 68 states and 137 transitions. [2019-12-07 10:07:35,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:35,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-07 10:07:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:35,580 INFO L225 Difference]: With dead ends: 68 [2019-12-07 10:07:35,580 INFO L226 Difference]: Without dead ends: 42 [2019-12-07 10:07:35,581 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:07:35,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-12-07 10:07:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-12-07 10:07:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 10:07:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 79 transitions. [2019-12-07 10:07:35,584 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 79 transitions. Word has length 13 [2019-12-07 10:07:35,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:35,584 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 79 transitions. [2019-12-07 10:07:35,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:07:35,585 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 79 transitions. [2019-12-07 10:07:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 10:07:35,585 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:35,585 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:35,585 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:35,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:35,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1443182165, now seen corresponding path program 2 times [2019-12-07 10:07:35,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:35,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254102600] [2019-12-07 10:07:35,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:35,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254102600] [2019-12-07 10:07:35,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:35,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:07:35,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901459490] [2019-12-07 10:07:35,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:35,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:35,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:35,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:35,618 INFO L87 Difference]: Start difference. First operand 42 states and 79 transitions. Second operand 4 states. [2019-12-07 10:07:35,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:35,636 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2019-12-07 10:07:35,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:07:35,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-12-07 10:07:35,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:35,637 INFO L225 Difference]: With dead ends: 46 [2019-12-07 10:07:35,637 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 10:07:35,638 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:07:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 10:07:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 10:07:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 10:07:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2019-12-07 10:07:35,640 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 13 [2019-12-07 10:07:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:35,640 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2019-12-07 10:07:35,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2019-12-07 10:07:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 10:07:35,641 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:35,641 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:35,641 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:35,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:35,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1395075125, now seen corresponding path program 3 times [2019-12-07 10:07:35,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:35,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056715028] [2019-12-07 10:07:35,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:35,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056715028] [2019-12-07 10:07:35,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:35,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:07:35,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215345850] [2019-12-07 10:07:35,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:35,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:35,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:35,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:35,673 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 4 states. [2019-12-07 10:07:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:35,692 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2019-12-07 10:07:35,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:35,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-12-07 10:07:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:35,693 INFO L225 Difference]: With dead ends: 41 [2019-12-07 10:07:35,693 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 10:07:35,693 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:07:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 10:07:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 10:07:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 10:07:35,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2019-12-07 10:07:35,695 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 13 [2019-12-07 10:07:35,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:35,696 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2019-12-07 10:07:35,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:35,696 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2019-12-07 10:07:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 10:07:35,696 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:35,696 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:35,697 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:35,697 INFO L82 PathProgramCache]: Analyzing trace with hash -534290396, now seen corresponding path program 1 times [2019-12-07 10:07:35,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:35,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032086477] [2019-12-07 10:07:35,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:35,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032086477] [2019-12-07 10:07:35,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:35,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 10:07:35,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877103827] [2019-12-07 10:07:35,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 10:07:35,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:35,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 10:07:35,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 10:07:35,777 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand 7 states. [2019-12-07 10:07:35,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:35,822 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2019-12-07 10:07:35,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 10:07:35,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-12-07 10:07:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:35,823 INFO L225 Difference]: With dead ends: 26 [2019-12-07 10:07:35,823 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 10:07:35,823 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-12-07 10:07:35,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 10:07:35,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 10:07:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 10:07:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2019-12-07 10:07:35,824 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 14 [2019-12-07 10:07:35,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:35,825 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2019-12-07 10:07:35,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 10:07:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2019-12-07 10:07:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 10:07:35,825 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:35,825 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:35,825 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:35,826 INFO L82 PathProgramCache]: Analyzing trace with hash -532613606, now seen corresponding path program 2 times [2019-12-07 10:07:35,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:35,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678339933] [2019-12-07 10:07:35,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:35,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678339933] [2019-12-07 10:07:35,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:35,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:07:35,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892875253] [2019-12-07 10:07:35,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:35,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:35,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:35,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:35,862 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 4 states. [2019-12-07 10:07:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:35,878 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2019-12-07 10:07:35,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:07:35,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 10:07:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:35,879 INFO L225 Difference]: With dead ends: 20 [2019-12-07 10:07:35,879 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 10:07:35,879 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:07:35,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 10:07:35,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 10:07:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 10:07:35,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 10:07:35,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-12-07 10:07:35,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:35,880 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:07:35,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:35,880 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 10:07:35,880 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 10:07:35,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:07:35 BasicIcfg [2019-12-07 10:07:35,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:07:35,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:07:35,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:07:35,884 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:07:35,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:33" (3/4) ... [2019-12-07 10:07:35,888 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 10:07:35,893 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 10:07:35,894 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 10:07:35,894 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 10:07:35,894 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-12-07 10:07:35,898 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 10:07:35,898 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 10:07:35,898 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 10:07:35,932 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3013444a-dda3-4ab3-b6df-17d5709cf225/bin/uautomizer/witness.graphml [2019-12-07 10:07:35,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:07:35,934 INFO L168 Benchmark]: Toolchain (without parser) took 2664.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 938.2 MB in the beginning and 950.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 79.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:35,934 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:07:35,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 938.2 MB in the beginning and 1.1 GB in the end (delta: -121.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:35,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.18 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. [2019-12-07 10:07:35,935 INFO L168 Benchmark]: Boogie Preprocessor took 23.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:35,935 INFO L168 Benchmark]: RCFGBuilder took 225.27 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: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:35,936 INFO L168 Benchmark]: TraceAbstraction took 1924.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 952.3 MB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:35,936 INFO L168 Benchmark]: Witness Printer took 48.37 ms. Allocated memory is still 1.1 GB. Free memory was 952.3 MB in the beginning and 950.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:35,938 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 403.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 938.2 MB in the beginning and 1.1 GB in the end (delta: -121.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.18 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 23.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 225.27 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: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1924.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 952.3 MB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 11.5 GB. * Witness Printer took 48.37 ms. Allocated memory is still 1.1 GB. Free memory was 952.3 MB in the beginning and 950.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 76 ProgramPointsBefore, 27 ProgramPointsAfterwards, 64 TransitionsBefore, 19 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 354 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 721 CheckedPairsTotal, 48 TotalNumberOfCompositions - 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 5 procedures, 64 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 119 SDslu, 119 SDs, 0 SdLazy, 76 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 7028 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...