./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a065c13e78ed395198628ca646c9399c45083a0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:14:06,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:14:06,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:14:06,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:14:06,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:14:06,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:14:06,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:14:06,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:14:06,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:14:06,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:14:06,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:14:06,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:14:06,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:14:06,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:14:06,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:14:06,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:14:06,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:14:06,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:14:06,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:14:06,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:14:06,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:14:06,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:14:06,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:14:06,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:14:06,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:14:06,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:14:06,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:14:06,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:14:06,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:14:06,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:14:06,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:14:06,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:14:06,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:14:06,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:14:06,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:14:06,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:14:06,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:14:06,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:14:06,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:14:06,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:14:06,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:14:06,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:14:06,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:14:06,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:14:06,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:14:06,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:14:06,725 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:14:06,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:14:06,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:14:06,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:14:06,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:14:06,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:14:06,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:14:06,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:14:06,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:14:06,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:14:06,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:14:06,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:14:06,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:14:06,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:14:06,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:14:06,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:14:06,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:14:06,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:14:06,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:14:06,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:14:06,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:14:06,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:14:06,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:14:06,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:14:06,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:14:06,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a065c13e78ed395198628ca646c9399c45083a0 [2020-11-28 03:14:07,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:14:07,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:14:07,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:14:07,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:14:07,098 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:14:07,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2020-11-28 03:14:07,198 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/data/5592c04f4/9218f24245e147ebb5f12a5e3f3f4808/FLAGebc50b830 [2020-11-28 03:14:07,873 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:14:07,876 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2020-11-28 03:14:07,899 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/data/5592c04f4/9218f24245e147ebb5f12a5e3f3f4808/FLAGebc50b830 [2020-11-28 03:14:08,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/data/5592c04f4/9218f24245e147ebb5f12a5e3f3f4808 [2020-11-28 03:14:08,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:14:08,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:14:08,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:08,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:14:08,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:14:08,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:08" (1/1) ... [2020-11-28 03:14:08,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da6ef19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:08, skipping insertion in model container [2020-11-28 03:14:08,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:08" (1/1) ... [2020-11-28 03:14:08,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:14:08,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:14:08,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:08,879 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:14:08,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:09,022 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:14:09,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09 WrapperNode [2020-11-28 03:14:09,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:09,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:09,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:14:09,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:14:09,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (1/1) ... [2020-11-28 03:14:09,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (1/1) ... [2020-11-28 03:14:09,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:09,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:14:09,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:14:09,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:14:09,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (1/1) ... [2020-11-28 03:14:09,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (1/1) ... [2020-11-28 03:14:09,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (1/1) ... [2020-11-28 03:14:09,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (1/1) ... [2020-11-28 03:14:09,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (1/1) ... [2020-11-28 03:14:09,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (1/1) ... [2020-11-28 03:14:09,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (1/1) ... [2020-11-28 03:14:09,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:14:09,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:14:09,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:14:09,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:14:09,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/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 [2020-11-28 03:14:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:14:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:14:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:14:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:14:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:14:09,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:14:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:14:09,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:14:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:14:09,262 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:14:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:14:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:14:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:14:09,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:14:09,265 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:14:09,796 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:14:09,797 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:14:09,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:09 BoogieIcfgContainer [2020-11-28 03:14:09,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:14:09,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:14:09,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:14:09,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:14:09,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:14:08" (1/3) ... [2020-11-28 03:14:09,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e811bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:09, skipping insertion in model container [2020-11-28 03:14:09,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:09" (2/3) ... [2020-11-28 03:14:09,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e811bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:09, skipping insertion in model container [2020-11-28 03:14:09,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:09" (3/3) ... [2020-11-28 03:14:09,809 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-11-28 03:14:09,820 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:14:09,821 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:14:09,825 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:14:09,826 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:14:09,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,855 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,855 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,857 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,857 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,859 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,859 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,863 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,863 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,864 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,883 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,884 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,884 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,890 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,891 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:14:09,900 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:14:09,921 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:14:09,955 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:14:09,956 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:14:09,956 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:14:09,956 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:14:09,956 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:14:09,956 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:14:09,957 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:14:09,957 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:14:09,971 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:14:09,973 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:14:09,977 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:14:09,979 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 03:14:10,038 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 03:14:10,038 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:14:10,043 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 03:14:10,047 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:14:12,894 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-28 03:14:13,020 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-28 03:14:13,039 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-28 03:14:13,040 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-28 03:14:13,047 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 03:14:13,097 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 03:14:13,099 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 03:14:13,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:14:13,109 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:13,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:13,110 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:13,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:13,119 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-28 03:14:13,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:13,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748713247] [2020-11-28 03:14:13,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:13,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748713247] [2020-11-28 03:14:13,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:13,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:14:13,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744435748] [2020-11-28 03:14:13,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:14:13,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:13,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:14:13,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:14:13,435 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 03:14:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:13,474 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 03:14:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:14:13,476 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:14:13,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:13,495 INFO L225 Difference]: With dead ends: 362 [2020-11-28 03:14:13,495 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 03:14:13,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:14:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 03:14:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 03:14:13,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 03:14:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 03:14:13,581 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 03:14:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:13,583 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 03:14:13,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:14:13,583 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 03:14:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:14:13,585 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:13,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:13,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:14:13,585 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:13,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-28 03:14:13,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:13,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800279482] [2020-11-28 03:14:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:13,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800279482] [2020-11-28 03:14:13,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:13,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:13,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67185960] [2020-11-28 03:14:13,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:14:13,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:13,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:14:13,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:14:13,756 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-28 03:14:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:13,837 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-28 03:14:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:14:13,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 03:14:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:13,841 INFO L225 Difference]: With dead ends: 330 [2020-11-28 03:14:13,841 INFO L226 Difference]: Without dead ends: 266 [2020-11-28 03:14:13,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:14:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-28 03:14:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-28 03:14:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-28 03:14:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-28 03:14:13,887 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-28 03:14:13,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:13,888 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-28 03:14:13,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:14:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-28 03:14:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:14:13,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:13,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:13,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:14:13,894 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:13,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:13,895 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-11-28 03:14:13,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:13,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600831141] [2020-11-28 03:14:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:14,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600831141] [2020-11-28 03:14:14,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:14,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:14,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849109115] [2020-11-28 03:14:14,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:14:14,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:14,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:14:14,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:14:14,061 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-11-28 03:14:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:14,176 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-11-28 03:14:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:14:14,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:14:14,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:14,181 INFO L225 Difference]: With dead ends: 290 [2020-11-28 03:14:14,181 INFO L226 Difference]: Without dead ends: 242 [2020-11-28 03:14:14,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:14:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-28 03:14:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-11-28 03:14:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-11-28 03:14:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-11-28 03:14:14,222 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-11-28 03:14:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:14,222 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-11-28 03:14:14,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:14:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-11-28 03:14:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:14:14,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:14,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:14,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:14:14,228 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:14,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:14,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1127596450, now seen corresponding path program 1 times [2020-11-28 03:14:14,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:14,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139942936] [2020-11-28 03:14:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:14,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139942936] [2020-11-28 03:14:14,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:14,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:14:14,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456801149] [2020-11-28 03:14:14,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:14:14,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:14,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:14:14,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:14,324 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 4 states. [2020-11-28 03:14:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:14,346 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-11-28 03:14:14,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:14:14,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:14:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:14,349 INFO L225 Difference]: With dead ends: 260 [2020-11-28 03:14:14,349 INFO L226 Difference]: Without dead ends: 224 [2020-11-28 03:14:14,350 INFO L677 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 [2020-11-28 03:14:14,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-28 03:14:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-11-28 03:14:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-11-28 03:14:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-11-28 03:14:14,363 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-11-28 03:14:14,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:14,363 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-11-28 03:14:14,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:14:14,364 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-11-28 03:14:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:14:14,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:14,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:14,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:14:14,366 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:14,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1343804868, now seen corresponding path program 1 times [2020-11-28 03:14:14,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:14,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758430710] [2020-11-28 03:14:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:14,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758430710] [2020-11-28 03:14:14,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:14,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:14,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414450457] [2020-11-28 03:14:14,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:14:14,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:14,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:14:14,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:14:14,459 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand 5 states. [2020-11-28 03:14:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:14,531 INFO L93 Difference]: Finished difference Result 293 states and 773 transitions. [2020-11-28 03:14:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:14:14,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:14:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:14,533 INFO L225 Difference]: With dead ends: 293 [2020-11-28 03:14:14,539 INFO L226 Difference]: Without dead ends: 146 [2020-11-28 03:14:14,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:14:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-28 03:14:14,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-28 03:14:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-28 03:14:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-11-28 03:14:14,549 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-11-28 03:14:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:14,549 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-11-28 03:14:14,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:14:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-11-28 03:14:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:14:14,551 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:14,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:14,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:14:14,552 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:14,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:14,552 INFO L82 PathProgramCache]: Analyzing trace with hash -365258832, now seen corresponding path program 1 times [2020-11-28 03:14:14,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:14,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182333075] [2020-11-28 03:14:14,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:14,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182333075] [2020-11-28 03:14:14,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:14,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:14:14,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890142169] [2020-11-28 03:14:14,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:14:14,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:14,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:14:14,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:14,623 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 4 states. [2020-11-28 03:14:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:14,667 INFO L93 Difference]: Finished difference Result 160 states and 379 transitions. [2020-11-28 03:14:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:14:14,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 03:14:14,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:14,670 INFO L225 Difference]: With dead ends: 160 [2020-11-28 03:14:14,670 INFO L226 Difference]: Without dead ends: 142 [2020-11-28 03:14:14,671 INFO L677 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 [2020-11-28 03:14:14,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-28 03:14:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-11-28 03:14:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-28 03:14:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 344 transitions. [2020-11-28 03:14:14,678 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 344 transitions. Word has length 13 [2020-11-28 03:14:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:14,683 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 344 transitions. [2020-11-28 03:14:14,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:14:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 344 transitions. [2020-11-28 03:14:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:14:14,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:14,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:14,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:14:14,685 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:14,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1116620912, now seen corresponding path program 1 times [2020-11-28 03:14:14,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:14,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107463709] [2020-11-28 03:14:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:14,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107463709] [2020-11-28 03:14:14,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:14,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:14,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126799672] [2020-11-28 03:14:14,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:14:14,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:14,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:14:14,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:14:14,770 INFO L87 Difference]: Start difference. First operand 142 states and 344 transitions. Second operand 5 states. [2020-11-28 03:14:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:14,850 INFO L93 Difference]: Finished difference Result 186 states and 444 transitions. [2020-11-28 03:14:14,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:14:14,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 03:14:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:14,851 INFO L225 Difference]: With dead ends: 186 [2020-11-28 03:14:14,852 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:14:14,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:14:14,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:14:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-28 03:14:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 03:14:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2020-11-28 03:14:14,856 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 14 [2020-11-28 03:14:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:14,857 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2020-11-28 03:14:14,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:14:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2020-11-28 03:14:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:14:14,858 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:14,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:14,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:14:14,859 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1047574954, now seen corresponding path program 1 times [2020-11-28 03:14:14,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:14,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650919074] [2020-11-28 03:14:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:14,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650919074] [2020-11-28 03:14:14,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:14,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:14:14,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259687487] [2020-11-28 03:14:14,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:14:14,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:14,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:14:14,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:14:14,972 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand 6 states. [2020-11-28 03:14:15,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:15,065 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2020-11-28 03:14:15,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:14:15,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:14:15,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:15,067 INFO L225 Difference]: With dead ends: 62 [2020-11-28 03:14:15,067 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:14:15,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:14:15,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:14:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:14:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:14:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:14:15,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-28 03:14:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:15,069 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:14:15,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:14:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:14:15,069 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:14:15,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:14:15,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:14:15 BasicIcfg [2020-11-28 03:14:15,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:14:15,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:14:15,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:14:15,074 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:14:15,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:09" (3/4) ... [2020-11-28 03:14:15,078 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:14:15,085 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:14:15,085 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:14:15,085 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:14:15,090 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:14:15,091 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:14:15,091 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:14:15,091 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:14:15,148 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_961da744-e082-497d-940a-7cc758e67138/bin/uautomizer/witness.graphml [2020-11-28 03:14:15,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:14:15,150 INFO L168 Benchmark]: Toolchain (without parser) took 6989.86 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 53.1 MB in the beginning and 93.6 MB in the end (delta: -40.5 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:15,151 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 83.9 MB. Free memory was 43.8 MB in the beginning and 43.7 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:15,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.65 ms. Allocated memory is still 83.9 MB. Free memory was 52.9 MB in the beginning and 41.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:15,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.84 ms. Allocated memory is still 83.9 MB. Free memory was 40.7 MB in the beginning and 39.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:15,159 INFO L168 Benchmark]: Boogie Preprocessor took 77.25 ms. Allocated memory is still 83.9 MB. Free memory was 39.1 MB in the beginning and 37.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:15,159 INFO L168 Benchmark]: RCFGBuilder took 638.11 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 37.8 MB in the beginning and 66.4 MB in the end (delta: -28.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:15,160 INFO L168 Benchmark]: TraceAbstraction took 5271.08 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 65.8 MB in the beginning and 95.7 MB in the end (delta: -29.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:15,160 INFO L168 Benchmark]: Witness Printer took 75.26 ms. Allocated memory is still 146.8 MB. Free memory was 95.7 MB in the beginning and 93.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:15,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 83.9 MB. Free memory was 43.8 MB in the beginning and 43.7 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 858.65 ms. Allocated memory is still 83.9 MB. Free memory was 52.9 MB in the beginning and 41.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.84 ms. Allocated memory is still 83.9 MB. Free memory was 40.7 MB in the beginning and 39.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.25 ms. Allocated memory is still 83.9 MB. Free memory was 39.1 MB in the beginning and 37.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 638.11 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 37.8 MB in the beginning and 66.4 MB in the end (delta: -28.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5271.08 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 65.8 MB in the beginning and 95.7 MB in the end (delta: -29.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * Witness Printer took 75.26 ms. Allocated memory is still 146.8 MB. Free memory was 95.7 MB in the beginning and 93.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 963 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: 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 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 158 SDtfs, 188 SDslu, 257 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...