./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_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_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f43935362c1335f4f9734ddabaed6e8642550761 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:59:36,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:59:36,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:59:36,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:59:36,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:59:36,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:59:36,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:59:36,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:59:36,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:59:36,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:59:36,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:59:36,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:59:36,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:59:36,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:59:36,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:59:36,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:59:36,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:59:36,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:59:36,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:59:36,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:59:36,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:59:36,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:59:36,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:59:36,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:59:36,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:59:36,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:59:36,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:59:36,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:59:36,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:59:36,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:59:36,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:59:36,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:59:36,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:59:36,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:59:36,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:59:36,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:59:36,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:59:36,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:59:36,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:59:36,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:59:36,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:59:36,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:59:36,791 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:59:36,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:59:36,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:59:36,793 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:59:36,793 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:59:36,793 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:59:36,794 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:59:36,794 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:59:36,794 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:59:36,794 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:59:36,795 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:59:36,796 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:59:36,796 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:59:36,796 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:59:36,796 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:59:36,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:59:36,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:59:36,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:59:36,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:59:36,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:59:36,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:59:36,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:59:36,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:59:36,799 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:59:36,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:59:36,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:59:36,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:59:36,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:59:36,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:59:36,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:59:36,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:59:36,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:59:36,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:59:36,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:59:36,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:59:36,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:59:36,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:59:36,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:59:36,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:59:36,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:59:36,805 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f43935362c1335f4f9734ddabaed6e8642550761 [2020-11-22 12:59:37,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:59:37,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:59:37,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:59:37,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:59:37,187 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:59:37,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2020-11-22 12:59:37,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/data/f509db8ed/9547cbb29f7b43bcab31d5f6a7e4c081/FLAGfce2df86f [2020-11-22 12:59:37,865 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:59:37,870 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2020-11-22 12:59:37,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/data/f509db8ed/9547cbb29f7b43bcab31d5f6a7e4c081/FLAGfce2df86f [2020-11-22 12:59:38,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/data/f509db8ed/9547cbb29f7b43bcab31d5f6a7e4c081 [2020-11-22 12:59:38,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:59:38,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:59:38,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:38,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:59:38,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:59:38,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509e3172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38, skipping insertion in model container [2020-11-22 12:59:38,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:59:38,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:59:38,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:38,600 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:59:38,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:38,742 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:59:38,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38 WrapperNode [2020-11-22 12:59:38,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:38,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:38,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:59:38,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:59:38,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:38,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:59:38,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:59:38,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:59:38,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... [2020-11-22 12:59:38,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:59:38,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:59:38,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:59:38,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:59:38,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/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 [2020-11-22 12:59:38,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:59:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:59:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:59:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:59:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-22 12:59:38,974 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-22 12:59:38,974 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-22 12:59:38,974 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-22 12:59:38,976 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-22 12:59:38,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-22 12:59:38,976 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-22 12:59:38,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-22 12:59:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:59:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:59:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:59:38,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:59:38,979 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:59:39,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:59:39,478 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:59:39,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:39 BoogieIcfgContainer [2020-11-22 12:59:39,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:59:39,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:59:39,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:59:39,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:59:39,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:59:38" (1/3) ... [2020-11-22 12:59:39,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777f0a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:39, skipping insertion in model container [2020-11-22 12:59:39,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:38" (2/3) ... [2020-11-22 12:59:39,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777f0a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:39, skipping insertion in model container [2020-11-22 12:59:39,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:39" (3/3) ... [2020-11-22 12:59:39,489 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2020-11-22 12:59:39,500 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:59:39,500 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:59:39,505 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:59:39,506 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:59:39,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,533 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,533 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,535 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,535 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,537 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,537 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,537 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,537 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,538 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,538 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,538 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,539 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,539 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,539 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,541 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,542 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,549 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,549 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,549 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,549 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:59:39,579 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-22 12:59:39,592 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-22 12:59:39,613 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:59:39,613 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:59:39,613 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:59:39,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:59:39,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:59:39,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:59:39,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:59:39,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:59:39,627 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:59:39,629 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 90 transitions, 200 flow [2020-11-22 12:59:39,632 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 90 transitions, 200 flow [2020-11-22 12:59:39,634 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 100 places, 90 transitions, 200 flow [2020-11-22 12:59:39,708 INFO L129 PetriNetUnfolder]: 3/86 cut-off events. [2020-11-22 12:59:39,709 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-22 12:59:39,713 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 3/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-11-22 12:59:39,719 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-11-22 12:59:41,780 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-11-22 12:59:42,627 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-22 12:59:42,744 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-22 12:59:43,122 INFO L131 LiptonReduction]: Checked pairs total: 4371 [2020-11-22 12:59:43,122 INFO L133 LiptonReduction]: Total number of compositions: 85 [2020-11-22 12:59:43,127 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-11-22 12:59:43,184 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-11-22 12:59:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-11-22 12:59:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:59:43,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:43,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:43,195 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:43,201 INFO L82 PathProgramCache]: Analyzing trace with hash -849468874, now seen corresponding path program 1 times [2020-11-22 12:59:43,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:43,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958260228] [2020-11-22 12:59:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:43,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958260228] [2020-11-22 12:59:43,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:43,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:59:43,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146813556] [2020-11-22 12:59:43,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:43,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:43,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:43,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:43,517 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-11-22 12:59:43,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:43,627 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-11-22 12:59:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:43,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-22 12:59:43,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:43,654 INFO L225 Difference]: With dead ends: 670 [2020-11-22 12:59:43,654 INFO L226 Difference]: Without dead ends: 526 [2020-11-22 12:59:43,655 INFO L677 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 [2020-11-22 12:59:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-11-22 12:59:43,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-11-22 12:59:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-11-22 12:59:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-11-22 12:59:43,788 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-11-22 12:59:43,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:43,789 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-11-22 12:59:43,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-11-22 12:59:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:59:43,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:43,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:43,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:59:43,792 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:43,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:43,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1548819894, now seen corresponding path program 1 times [2020-11-22 12:59:43,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:43,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606083960] [2020-11-22 12:59:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:43,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606083960] [2020-11-22 12:59:43,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:43,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:43,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310715917] [2020-11-22 12:59:43,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:43,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:43,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:43,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:43,898 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-11-22 12:59:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:43,952 INFO L93 Difference]: Finished difference Result 724 states and 2331 transitions. [2020-11-22 12:59:43,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:43,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 12:59:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:43,959 INFO L225 Difference]: With dead ends: 724 [2020-11-22 12:59:43,959 INFO L226 Difference]: Without dead ends: 412 [2020-11-22 12:59:43,960 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 [2020-11-22 12:59:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-11-22 12:59:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-11-22 12:59:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-11-22 12:59:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1323 transitions. [2020-11-22 12:59:43,997 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1323 transitions. Word has length 11 [2020-11-22 12:59:43,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:43,998 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 1323 transitions. [2020-11-22 12:59:43,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:43,998 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1323 transitions. [2020-11-22 12:59:44,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:59:44,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:44,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:44,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:59:44,005 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:44,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:44,006 INFO L82 PathProgramCache]: Analyzing trace with hash -295858392, now seen corresponding path program 1 times [2020-11-22 12:59:44,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:44,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411195798] [2020-11-22 12:59:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:44,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411195798] [2020-11-22 12:59:44,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:44,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:59:44,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296003168] [2020-11-22 12:59:44,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:44,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:44,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:44,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:44,079 INFO L87 Difference]: Start difference. First operand 412 states and 1323 transitions. Second operand 3 states. [2020-11-22 12:59:44,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:44,098 INFO L93 Difference]: Finished difference Result 394 states and 1254 transitions. [2020-11-22 12:59:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:44,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-22 12:59:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:44,102 INFO L225 Difference]: With dead ends: 394 [2020-11-22 12:59:44,103 INFO L226 Difference]: Without dead ends: 394 [2020-11-22 12:59:44,103 INFO L677 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 [2020-11-22 12:59:44,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-11-22 12:59:44,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-11-22 12:59:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-11-22 12:59:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1254 transitions. [2020-11-22 12:59:44,122 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1254 transitions. Word has length 12 [2020-11-22 12:59:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:44,123 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1254 transitions. [2020-11-22 12:59:44,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1254 transitions. [2020-11-22 12:59:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:59:44,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:44,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:44,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:59:44,125 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:44,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:44,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1042420885, now seen corresponding path program 1 times [2020-11-22 12:59:44,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:44,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394291690] [2020-11-22 12:59:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:44,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394291690] [2020-11-22 12:59:44,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:44,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:44,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096602493] [2020-11-22 12:59:44,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:44,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:44,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:44,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:44,204 INFO L87 Difference]: Start difference. First operand 394 states and 1254 transitions. Second operand 4 states. [2020-11-22 12:59:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:44,271 INFO L93 Difference]: Finished difference Result 538 states and 1654 transitions. [2020-11-22 12:59:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:44,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-22 12:59:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:44,275 INFO L225 Difference]: With dead ends: 538 [2020-11-22 12:59:44,276 INFO L226 Difference]: Without dead ends: 286 [2020-11-22 12:59:44,278 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 [2020-11-22 12:59:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-11-22 12:59:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2020-11-22 12:59:44,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-11-22 12:59:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 851 transitions. [2020-11-22 12:59:44,295 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 851 transitions. Word has length 13 [2020-11-22 12:59:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:44,295 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 851 transitions. [2020-11-22 12:59:44,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 851 transitions. [2020-11-22 12:59:44,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:59:44,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:44,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:44,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:59:44,305 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:44,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:44,306 INFO L82 PathProgramCache]: Analyzing trace with hash -402598089, now seen corresponding path program 1 times [2020-11-22 12:59:44,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:44,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629411276] [2020-11-22 12:59:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:44,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629411276] [2020-11-22 12:59:44,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:44,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:59:44,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110555892] [2020-11-22 12:59:44,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:44,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:44,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:44,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:44,435 INFO L87 Difference]: Start difference. First operand 286 states and 851 transitions. Second operand 4 states. [2020-11-22 12:59:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:44,494 INFO L93 Difference]: Finished difference Result 355 states and 990 transitions. [2020-11-22 12:59:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:59:44,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-22 12:59:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:44,497 INFO L225 Difference]: With dead ends: 355 [2020-11-22 12:59:44,497 INFO L226 Difference]: Without dead ends: 262 [2020-11-22 12:59:44,498 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 [2020-11-22 12:59:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-22 12:59:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-11-22 12:59:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-22 12:59:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 738 transitions. [2020-11-22 12:59:44,509 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 738 transitions. Word has length 14 [2020-11-22 12:59:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:44,510 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 738 transitions. [2020-11-22 12:59:44,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 738 transitions. [2020-11-22 12:59:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 12:59:44,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:44,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:44,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:59:44,511 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:44,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1456913458, now seen corresponding path program 1 times [2020-11-22 12:59:44,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:44,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271524198] [2020-11-22 12:59:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:44,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271524198] [2020-11-22 12:59:44,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:44,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:44,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74650696] [2020-11-22 12:59:44,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:44,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:44,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:44,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:44,616 INFO L87 Difference]: Start difference. First operand 262 states and 738 transitions. Second operand 5 states. [2020-11-22 12:59:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:44,735 INFO L93 Difference]: Finished difference Result 283 states and 734 transitions. [2020-11-22 12:59:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:59:44,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-22 12:59:44,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:44,738 INFO L225 Difference]: With dead ends: 283 [2020-11-22 12:59:44,738 INFO L226 Difference]: Without dead ends: 208 [2020-11-22 12:59:44,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:59:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-22 12:59:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2020-11-22 12:59:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-11-22 12:59:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 528 transitions. [2020-11-22 12:59:44,751 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 528 transitions. Word has length 15 [2020-11-22 12:59:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:44,752 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 528 transitions. [2020-11-22 12:59:44,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 528 transitions. [2020-11-22 12:59:44,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:59:44,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:44,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:44,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:59:44,754 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:44,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:44,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2108608562, now seen corresponding path program 1 times [2020-11-22 12:59:44,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:44,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903534252] [2020-11-22 12:59:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:44,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903534252] [2020-11-22 12:59:44,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:44,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:59:44,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446305318] [2020-11-22 12:59:44,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:59:44,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:44,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:59:44,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:59:44,845 INFO L87 Difference]: Start difference. First operand 208 states and 528 transitions. Second operand 6 states. [2020-11-22 12:59:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:44,920 INFO L93 Difference]: Finished difference Result 201 states and 486 transitions. [2020-11-22 12:59:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:59:44,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-22 12:59:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:44,922 INFO L225 Difference]: With dead ends: 201 [2020-11-22 12:59:44,923 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 12:59:44,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 12:59:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 12:59:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 12:59:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 394 transitions. [2020-11-22 12:59:44,930 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 394 transitions. Word has length 16 [2020-11-22 12:59:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:44,931 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 394 transitions. [2020-11-22 12:59:44,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:59:44,932 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 394 transitions. [2020-11-22 12:59:44,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:59:44,933 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:44,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:44,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:59:44,933 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:44,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:44,934 INFO L82 PathProgramCache]: Analyzing trace with hash -999056211, now seen corresponding path program 1 times [2020-11-22 12:59:44,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:44,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917567173] [2020-11-22 12:59:44,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:45,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917567173] [2020-11-22 12:59:45,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:45,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:45,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620737453] [2020-11-22 12:59:45,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:45,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:45,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:45,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:45,004 INFO L87 Difference]: Start difference. First operand 163 states and 394 transitions. Second operand 4 states. [2020-11-22 12:59:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:45,046 INFO L93 Difference]: Finished difference Result 263 states and 604 transitions. [2020-11-22 12:59:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:59:45,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-22 12:59:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:45,048 INFO L225 Difference]: With dead ends: 263 [2020-11-22 12:59:45,048 INFO L226 Difference]: Without dead ends: 127 [2020-11-22 12:59:45,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:45,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-22 12:59:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-11-22 12:59:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-22 12:59:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-11-22 12:59:45,053 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-11-22 12:59:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:45,053 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-11-22 12:59:45,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-11-22 12:59:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:59:45,080 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:45,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:45,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:59:45,081 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:45,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:45,081 INFO L82 PathProgramCache]: Analyzing trace with hash 833653032, now seen corresponding path program 1 times [2020-11-22 12:59:45,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:45,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608719895] [2020-11-22 12:59:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:45,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608719895] [2020-11-22 12:59:45,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:45,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:45,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819703191] [2020-11-22 12:59:45,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:45,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:45,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:45,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:45,163 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2020-11-22 12:59:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:45,186 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2020-11-22 12:59:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:45,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-22 12:59:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:45,187 INFO L225 Difference]: With dead ends: 142 [2020-11-22 12:59:45,187 INFO L226 Difference]: Without dead ends: 87 [2020-11-22 12:59:45,187 INFO L677 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 [2020-11-22 12:59:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-22 12:59:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-11-22 12:59:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-22 12:59:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2020-11-22 12:59:45,191 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2020-11-22 12:59:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:45,191 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2020-11-22 12:59:45,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-11-22 12:59:45,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:59:45,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:45,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:45,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:59:45,193 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:45,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:45,193 INFO L82 PathProgramCache]: Analyzing trace with hash 721666079, now seen corresponding path program 2 times [2020-11-22 12:59:45,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:45,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477348944] [2020-11-22 12:59:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:45,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477348944] [2020-11-22 12:59:45,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:45,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 12:59:45,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979372471] [2020-11-22 12:59:45,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:59:45,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:45,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:59:45,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:45,280 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2020-11-22 12:59:45,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:45,325 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-11-22 12:59:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:59:45,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-22 12:59:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:45,326 INFO L225 Difference]: With dead ends: 81 [2020-11-22 12:59:45,326 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:59:45,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:59:45,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:59:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:59:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:59:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:59:45,327 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-22 12:59:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:45,327 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:59:45,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:59:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:59:45,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:59:45,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 12:59:45,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:59:45 BasicIcfg [2020-11-22 12:59:45,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:59:45,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:59:45,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:59:45,331 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:59:45,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:39" (3/4) ... [2020-11-22 12:59:45,334 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:59:45,341 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-22 12:59:45,341 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-22 12:59:45,341 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-22 12:59:45,341 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-11-22 12:59:45,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-11-22 12:59:45,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:59:45,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:59:45,347 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:59:45,384 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1d02140a-5022-4b61-bea8-8d22edb9fe8b/bin/utaipan/witness.graphml [2020-11-22 12:59:45,384 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:59:45,386 INFO L168 Benchmark]: Toolchain (without parser) took 7257.54 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 77.3 MB in the beginning and 98.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:45,386 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory is still 41.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:45,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.71 ms. Allocated memory is still 107.0 MB. Free memory was 77.0 MB in the beginning and 63.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:45,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.53 ms. Allocated memory is still 107.0 MB. Free memory was 63.4 MB in the beginning and 60.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:45,387 INFO L168 Benchmark]: Boogie Preprocessor took 55.98 ms. Allocated memory is still 107.0 MB. Free memory was 60.7 MB in the beginning and 59.8 MB in the end (delta: 868.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:45,388 INFO L168 Benchmark]: RCFGBuilder took 594.21 ms. Allocated memory is still 107.0 MB. Free memory was 59.2 MB in the beginning and 83.9 MB in the end (delta: -24.7 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:45,388 INFO L168 Benchmark]: TraceAbstraction took 5848.35 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 83.9 MB in the beginning and 101.9 MB in the end (delta: -18.0 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:45,389 INFO L168 Benchmark]: Witness Printer took 53.71 ms. Allocated memory is still 157.3 MB. Free memory was 101.9 MB in the beginning and 98.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:45,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory is still 41.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 612.71 ms. Allocated memory is still 107.0 MB. Free memory was 77.0 MB in the beginning and 63.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.53 ms. Allocated memory is still 107.0 MB. Free memory was 63.4 MB in the beginning and 60.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.98 ms. Allocated memory is still 107.0 MB. Free memory was 60.7 MB in the beginning and 59.8 MB in the end (delta: 868.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 594.21 ms. Allocated memory is still 107.0 MB. Free memory was 59.2 MB in the beginning and 83.9 MB in the end (delta: -24.7 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5848.35 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 83.9 MB in the beginning and 101.9 MB in the end (delta: -18.0 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. * Witness Printer took 53.71 ms. Allocated memory is still 157.3 MB. Free memory was 101.9 MB in the beginning and 98.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1452 VarBasedMoverChecksPositive, 69 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 96 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 100 PlacesBefore, 38 PlacesAfterwards, 90 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 18 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 4371 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 5 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 221 SDtfs, 240 SDslu, 330 SDs, 0 SdLazy, 162 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 5745 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...