./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/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 0.2.0-7b2dab5 [2020-12-09 18:40:12,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:40:12,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:40:12,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:40:12,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:40:12,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:40:12,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:40:12,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:40:12,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:40:12,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:40:12,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:40:12,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:40:12,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:40:12,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:40:12,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:40:12,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:40:12,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:40:12,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:40:12,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:40:12,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:40:12,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:40:12,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:40:12,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:40:12,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:40:12,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:40:12,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:40:12,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:40:12,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:40:12,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:40:12,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:40:12,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:40:12,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:40:12,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:40:12,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:40:12,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:40:12,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:40:12,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:40:12,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:40:12,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:40:12,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:40:12,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:40:12,776 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:40:12,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:40:12,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:40:12,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:40:12,802 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:40:12,803 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:40:12,803 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:40:12,803 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:40:12,803 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:40:12,803 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:40:12,804 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:40:12,804 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:40:12,804 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:40:12,804 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:40:12,804 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:40:12,805 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:40:12,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:40:12,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:40:12,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:40:12,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:40:12,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:40:12,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:40:12,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:40:12,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:40:12,807 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:40:12,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:40:12,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:40:12,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:40:12,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:40:12,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:40:12,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:40:12,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:40:12,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:40:12,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:40:12,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:40:12,809 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:40:12,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:40:12,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:40:12,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:40:12,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:40:12,810 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_bf639229-5895-41cc-8c31-ad98982e61cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f43935362c1335f4f9734ddabaed6e8642550761 [2020-12-09 18:40:13,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:40:13,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:40:13,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:40:13,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:40:13,034 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:40:13,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2020-12-09 18:40:13,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/data/fbbe2707c/162201fe1fac4b7e937c49d75aa3e2fa/FLAGccbd29014 [2020-12-09 18:40:13,502 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:40:13,502 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2020-12-09 18:40:13,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/data/fbbe2707c/162201fe1fac4b7e937c49d75aa3e2fa/FLAGccbd29014 [2020-12-09 18:40:13,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/data/fbbe2707c/162201fe1fac4b7e937c49d75aa3e2fa [2020-12-09 18:40:13,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:40:13,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:40:13,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:40:13,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:40:13,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:40:13,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d1db7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13, skipping insertion in model container [2020-12-09 18:40:13,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:40:13,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:40:13,686 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i[949,962] [2020-12-09 18:40:13,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:40:13,794 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:40:13,802 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i[949,962] [2020-12-09 18:40:13,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:40:13,884 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:40:13,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13 WrapperNode [2020-12-09 18:40:13,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:40:13,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:40:13,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:40:13,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:40:13,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:40:13,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:40:13,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:40:13,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:40:13,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (1/1) ... [2020-12-09 18:40:13,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:40:13,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:40:13,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:40:13,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:40:13,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/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 [2020-12-09 18:40:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 18:40:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 18:40:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:40:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:40:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 18:40:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 18:40:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 18:40:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 18:40:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 18:40:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 18:40:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-09 18:40:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-09 18:40:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:40:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 18:40:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:40:13,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:40:14,000 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 18:40:14,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:40:14,222 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 18:40:14,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:40:14 BoogieIcfgContainer [2020-12-09 18:40:14,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:40:14,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:40:14,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:40:14,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:40:14,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:40:13" (1/3) ... [2020-12-09 18:40:14,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ad12a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:40:14, skipping insertion in model container [2020-12-09 18:40:14,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:40:13" (2/3) ... [2020-12-09 18:40:14,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ad12a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:40:14, skipping insertion in model container [2020-12-09 18:40:14,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:40:14" (3/3) ... [2020-12-09 18:40:14,229 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2020-12-09 18:40:14,239 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 18:40:14,239 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:40:14,241 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:40:14,242 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 18:40:14,268 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,269 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,269 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,269 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,269 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,270 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,271 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,271 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,271 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,273 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,274 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,274 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,274 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,274 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,274 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,274 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,274 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,274 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,274 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,275 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,275 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,275 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,276 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,277 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,277 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,277 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,280 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,280 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,280 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,281 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,282 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,282 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,284 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,284 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,284 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,284 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 18:40:14,285 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 18:40:14,293 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-09 18:40:14,308 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:40:14,308 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:40:14,308 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:40:14,308 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:40:14,308 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:40:14,309 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:40:14,309 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:40:14,309 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:40:14,317 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 18:40:14,319 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-09 18:40:14,321 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-09 18:40:14,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-12-09 18:40:14,355 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-12-09 18:40:14,355 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 18:40:14,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-09 18:40:14,361 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-09 18:40:16,360 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 18:40:16,586 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 18:40:16,836 INFO L131 LiptonReduction]: Checked pairs total: 2978 [2020-12-09 18:40:16,836 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-12-09 18:40:16,840 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-09 18:40:16,871 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-09 18:40:16,872 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-09 18:40:16,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:40:16,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:16,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:16,879 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:16,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:16,883 INFO L82 PathProgramCache]: Analyzing trace with hash -36259415, now seen corresponding path program 1 times [2020-12-09 18:40:16,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:16,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398833685] [2020-12-09 18:40:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:17,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398833685] [2020-12-09 18:40:17,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:17,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 18:40:17,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898167945] [2020-12-09 18:40:17,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:40:17,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:17,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:40:17,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:40:17,108 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-09 18:40:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:17,153 INFO L93 Difference]: Finished difference Result 1072 states and 3535 transitions. [2020-12-09 18:40:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:40:17,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 18:40:17,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:17,175 INFO L225 Difference]: With dead ends: 1072 [2020-12-09 18:40:17,175 INFO L226 Difference]: Without dead ends: 745 [2020-12-09 18:40:17,176 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 [2020-12-09 18:40:17,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-12-09 18:40:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 679. [2020-12-09 18:40:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-12-09 18:40:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2220 transitions. [2020-12-09 18:40:17,258 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 2220 transitions. Word has length 10 [2020-12-09 18:40:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:17,258 INFO L481 AbstractCegarLoop]: Abstraction has 679 states and 2220 transitions. [2020-12-09 18:40:17,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:40:17,258 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 2220 transitions. [2020-12-09 18:40:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 18:40:17,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:17,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:17,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:40:17,261 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1165014530, now seen corresponding path program 1 times [2020-12-09 18:40:17,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:17,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793759496] [2020-12-09 18:40:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:17,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793759496] [2020-12-09 18:40:17,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:17,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:40:17,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454887843] [2020-12-09 18:40:17,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:40:17,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:17,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:40:17,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:40:17,329 INFO L87 Difference]: Start difference. First operand 679 states and 2220 transitions. Second operand 4 states. [2020-12-09 18:40:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:17,350 INFO L93 Difference]: Finished difference Result 700 states and 2225 transitions. [2020-12-09 18:40:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:40:17,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 18:40:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:17,355 INFO L225 Difference]: With dead ends: 700 [2020-12-09 18:40:17,356 INFO L226 Difference]: Without dead ends: 700 [2020-12-09 18:40:17,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:40:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-12-09 18:40:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 652. [2020-12-09 18:40:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-12-09 18:40:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2109 transitions. [2020-12-09 18:40:17,380 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2109 transitions. Word has length 11 [2020-12-09 18:40:17,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:17,380 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 2109 transitions. [2020-12-09 18:40:17,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:40:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2109 transitions. [2020-12-09 18:40:17,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 18:40:17,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:17,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:17,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:40:17,383 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:17,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:17,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1124043458, now seen corresponding path program 1 times [2020-12-09 18:40:17,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:17,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766634839] [2020-12-09 18:40:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:17,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766634839] [2020-12-09 18:40:17,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:17,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:40:17,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629868008] [2020-12-09 18:40:17,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:40:17,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:17,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:40:17,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:40:17,451 INFO L87 Difference]: Start difference. First operand 652 states and 2109 transitions. Second operand 4 states. [2020-12-09 18:40:17,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:17,475 INFO L93 Difference]: Finished difference Result 664 states and 2099 transitions. [2020-12-09 18:40:17,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:40:17,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 18:40:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:17,481 INFO L225 Difference]: With dead ends: 664 [2020-12-09 18:40:17,481 INFO L226 Difference]: Without dead ends: 664 [2020-12-09 18:40:17,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:40:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-12-09 18:40:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 604. [2020-12-09 18:40:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-12-09 18:40:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1939 transitions. [2020-12-09 18:40:17,507 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1939 transitions. Word has length 11 [2020-12-09 18:40:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:17,507 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 1939 transitions. [2020-12-09 18:40:17,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:40:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1939 transitions. [2020-12-09 18:40:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 18:40:17,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:17,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:17,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 18:40:17,510 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:17,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:17,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1755710469, now seen corresponding path program 1 times [2020-12-09 18:40:17,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:17,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808193049] [2020-12-09 18:40:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:17,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808193049] [2020-12-09 18:40:17,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:17,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:40:17,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167242075] [2020-12-09 18:40:17,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:40:17,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:17,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:40:17,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:40:17,568 INFO L87 Difference]: Start difference. First operand 604 states and 1939 transitions. Second operand 5 states. [2020-12-09 18:40:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:17,600 INFO L93 Difference]: Finished difference Result 856 states and 2659 transitions. [2020-12-09 18:40:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:40:17,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 18:40:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:17,605 INFO L225 Difference]: With dead ends: 856 [2020-12-09 18:40:17,605 INFO L226 Difference]: Without dead ends: 472 [2020-12-09 18:40:17,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:40:17,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-12-09 18:40:17,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 436. [2020-12-09 18:40:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-12-09 18:40:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1375 transitions. [2020-12-09 18:40:17,624 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1375 transitions. Word has length 12 [2020-12-09 18:40:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:17,624 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 1375 transitions. [2020-12-09 18:40:17,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:40:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1375 transitions. [2020-12-09 18:40:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 18:40:17,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:17,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:17,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 18:40:17,626 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash -485610361, now seen corresponding path program 2 times [2020-12-09 18:40:17,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:17,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232011830] [2020-12-09 18:40:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:17,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232011830] [2020-12-09 18:40:17,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:17,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 18:40:17,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934772082] [2020-12-09 18:40:17,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:40:17,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:17,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:40:17,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:40:17,663 INFO L87 Difference]: Start difference. First operand 436 states and 1375 transitions. Second operand 3 states. [2020-12-09 18:40:17,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:17,669 INFO L93 Difference]: Finished difference Result 418 states and 1306 transitions. [2020-12-09 18:40:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:40:17,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-09 18:40:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:17,672 INFO L225 Difference]: With dead ends: 418 [2020-12-09 18:40:17,672 INFO L226 Difference]: Without dead ends: 418 [2020-12-09 18:40:17,672 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 [2020-12-09 18:40:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-12-09 18:40:17,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-12-09 18:40:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-09 18:40:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1306 transitions. [2020-12-09 18:40:17,683 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1306 transitions. Word has length 12 [2020-12-09 18:40:17,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:17,683 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1306 transitions. [2020-12-09 18:40:17,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:40:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1306 transitions. [2020-12-09 18:40:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 18:40:17,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:17,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:17,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 18:40:17,684 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:17,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:17,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1949399229, now seen corresponding path program 1 times [2020-12-09 18:40:17,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:17,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735891131] [2020-12-09 18:40:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:17,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735891131] [2020-12-09 18:40:17,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:17,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:40:17,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552528706] [2020-12-09 18:40:17,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:40:17,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:17,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:40:17,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:40:17,719 INFO L87 Difference]: Start difference. First operand 418 states and 1306 transitions. Second operand 4 states. [2020-12-09 18:40:17,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:17,735 INFO L93 Difference]: Finished difference Result 532 states and 1601 transitions. [2020-12-09 18:40:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:40:17,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 18:40:17,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:17,738 INFO L225 Difference]: With dead ends: 532 [2020-12-09 18:40:17,738 INFO L226 Difference]: Without dead ends: 412 [2020-12-09 18:40:17,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:40:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-09 18:40:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2020-12-09 18:40:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-09 18:40:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1137 transitions. [2020-12-09 18:40:17,749 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1137 transitions. Word has length 13 [2020-12-09 18:40:17,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:17,749 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1137 transitions. [2020-12-09 18:40:17,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:40:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1137 transitions. [2020-12-09 18:40:17,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 18:40:17,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:17,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:17,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 18:40:17,750 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1949381931, now seen corresponding path program 1 times [2020-12-09 18:40:17,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:17,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193947695] [2020-12-09 18:40:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:17,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193947695] [2020-12-09 18:40:17,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:17,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:40:17,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627597044] [2020-12-09 18:40:17,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:40:17,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:17,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:40:17,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:40:17,782 INFO L87 Difference]: Start difference. First operand 376 states and 1137 transitions. Second operand 4 states. [2020-12-09 18:40:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:17,802 INFO L93 Difference]: Finished difference Result 526 states and 1530 transitions. [2020-12-09 18:40:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:40:17,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 18:40:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:17,805 INFO L225 Difference]: With dead ends: 526 [2020-12-09 18:40:17,805 INFO L226 Difference]: Without dead ends: 274 [2020-12-09 18:40:17,806 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 [2020-12-09 18:40:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-12-09 18:40:17,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-12-09 18:40:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-09 18:40:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-12-09 18:40:17,815 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 13 [2020-12-09 18:40:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:17,816 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-12-09 18:40:17,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:40:17,816 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-12-09 18:40:17,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 18:40:17,817 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:17,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:17,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 18:40:17,817 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:17,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:17,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2123867267, now seen corresponding path program 1 times [2020-12-09 18:40:17,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:17,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756165398] [2020-12-09 18:40:17,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:17,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756165398] [2020-12-09 18:40:17,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:17,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:40:17,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126475714] [2020-12-09 18:40:17,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:40:17,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:17,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:40:17,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:40:17,874 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-12-09 18:40:17,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:17,905 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-12-09 18:40:17,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:40:17,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 18:40:17,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:17,908 INFO L225 Difference]: With dead ends: 345 [2020-12-09 18:40:17,908 INFO L226 Difference]: Without dead ends: 252 [2020-12-09 18:40:17,909 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 [2020-12-09 18:40:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-09 18:40:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-12-09 18:40:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-09 18:40:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-12-09 18:40:17,918 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-12-09 18:40:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:17,918 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-12-09 18:40:17,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:40:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-12-09 18:40:17,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 18:40:17,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:17,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:17,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 18:40:17,919 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:17,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:17,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1422134941, now seen corresponding path program 1 times [2020-12-09 18:40:17,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:17,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699420682] [2020-12-09 18:40:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:17,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699420682] [2020-12-09 18:40:17,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:17,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:40:17,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914131931] [2020-12-09 18:40:17,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:40:17,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:17,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:40:17,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:40:17,973 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-12-09 18:40:18,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:18,005 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-12-09 18:40:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:40:18,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 18:40:18,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:18,007 INFO L225 Difference]: With dead ends: 278 [2020-12-09 18:40:18,007 INFO L226 Difference]: Without dead ends: 203 [2020-12-09 18:40:18,007 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 [2020-12-09 18:40:18,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-09 18:40:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-12-09 18:40:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-09 18:40:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-12-09 18:40:18,012 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-12-09 18:40:18,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:18,013 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-12-09 18:40:18,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:40:18,013 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-12-09 18:40:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 18:40:18,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:18,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:18,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 18:40:18,014 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:18,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1099628631, now seen corresponding path program 1 times [2020-12-09 18:40:18,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:18,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559358993] [2020-12-09 18:40:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:18,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559358993] [2020-12-09 18:40:18,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:18,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:40:18,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244255376] [2020-12-09 18:40:18,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 18:40:18,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:18,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 18:40:18,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:40:18,054 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-12-09 18:40:18,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:18,109 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-12-09 18:40:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 18:40:18,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 18:40:18,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:18,111 INFO L225 Difference]: With dead ends: 200 [2020-12-09 18:40:18,111 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 18:40:18,111 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 [2020-12-09 18:40:18,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 18:40:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-09 18:40:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-09 18:40:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-12-09 18:40:18,116 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-12-09 18:40:18,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:18,117 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-12-09 18:40:18,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 18:40:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-12-09 18:40:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 18:40:18,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:18,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:18,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 18:40:18,118 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:18,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:18,118 INFO L82 PathProgramCache]: Analyzing trace with hash 554738786, now seen corresponding path program 1 times [2020-12-09 18:40:18,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:18,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441668830] [2020-12-09 18:40:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:18,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441668830] [2020-12-09 18:40:18,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:18,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:40:18,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047123024] [2020-12-09 18:40:18,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:40:18,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:18,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:40:18,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:40:18,165 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 5 states. [2020-12-09 18:40:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:18,189 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-12-09 18:40:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:40:18,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 18:40:18,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:18,190 INFO L225 Difference]: With dead ends: 194 [2020-12-09 18:40:18,190 INFO L226 Difference]: Without dead ends: 127 [2020-12-09 18:40:18,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:40:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-09 18:40:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-09 18:40:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-09 18:40:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-09 18:40:18,194 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-09 18:40:18,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:18,194 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-09 18:40:18,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:40:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-09 18:40:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 18:40:18,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:18,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:18,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 18:40:18,195 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash -780782352, now seen corresponding path program 2 times [2020-12-09 18:40:18,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:18,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847606749] [2020-12-09 18:40:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:18,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847606749] [2020-12-09 18:40:18,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:18,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 18:40:18,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761912929] [2020-12-09 18:40:18,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 18:40:18,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:18,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 18:40:18,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 18:40:18,249 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-12-09 18:40:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:18,307 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-12-09 18:40:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 18:40:18,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-09 18:40:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:18,309 INFO L225 Difference]: With dead ends: 120 [2020-12-09 18:40:18,309 INFO L226 Difference]: Without dead ends: 71 [2020-12-09 18:40:18,309 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 [2020-12-09 18:40:18,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-09 18:40:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-09 18:40:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-09 18:40:18,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-12-09 18:40:18,312 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-12-09 18:40:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:18,312 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-12-09 18:40:18,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 18:40:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-12-09 18:40:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 18:40:18,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:40:18,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:40:18,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 18:40:18,313 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:40:18,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:40:18,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1285342776, now seen corresponding path program 1 times [2020-12-09 18:40:18,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:40:18,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018281131] [2020-12-09 18:40:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:40:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:40:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:40:18,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018281131] [2020-12-09 18:40:18,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:40:18,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:40:18,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164221489] [2020-12-09 18:40:18,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:40:18,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:40:18,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:40:18,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:40:18,357 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-12-09 18:40:18,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:40:18,377 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-12-09 18:40:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:40:18,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-09 18:40:18,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:40:18,378 INFO L225 Difference]: With dead ends: 70 [2020-12-09 18:40:18,378 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:40:18,378 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 [2020-12-09 18:40:18,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:40:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:40:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:40:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:40:18,379 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-09 18:40:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:40:18,379 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:40:18,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:40:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:40:18,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:40:18,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 18:40:18,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:40:18 BasicIcfg [2020-12-09 18:40:18,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:40:18,383 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:40:18,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:40:18,383 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:40:18,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:40:14" (3/4) ... [2020-12-09 18:40:18,386 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:40:18,390 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 18:40:18,390 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 18:40:18,390 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 18:40:18,390 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-09 18:40:18,394 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-09 18:40:18,394 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 18:40:18,394 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:40:18,394 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:40:18,420 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bf639229-5895-41cc-8c31-ad98982e61cd/bin/utaipan/witness.graphml [2020-12-09 18:40:18,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:40:18,421 INFO L168 Benchmark]: Toolchain (without parser) took 4894.15 ms. Allocated memory was 115.3 MB in the beginning and 174.1 MB in the end (delta: 58.7 MB). Free memory was 91.1 MB in the beginning and 82.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 67.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:40:18,421 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 115.3 MB. Free memory was 79.9 MB in the beginning and 79.8 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:40:18,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.42 ms. Allocated memory is still 115.3 MB. Free memory was 90.8 MB in the beginning and 70.7 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2020-12-09 18:40:18,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.44 ms. Allocated memory is still 115.3 MB. Free memory was 70.7 MB in the beginning and 69.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:40:18,423 INFO L168 Benchmark]: Boogie Preprocessor took 19.06 ms. Allocated memory is still 115.3 MB. Free memory was 69.0 MB in the beginning and 67.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:40:18,423 INFO L168 Benchmark]: RCFGBuilder took 283.15 ms. Allocated memory is still 115.3 MB. Free memory was 67.5 MB in the beginning and 43.8 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:40:18,424 INFO L168 Benchmark]: TraceAbstraction took 4157.89 ms. Allocated memory was 115.3 MB in the beginning and 174.1 MB in the end (delta: 58.7 MB). Free memory was 43.1 MB in the beginning and 85.2 MB in the end (delta: -42.1 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:40:18,424 INFO L168 Benchmark]: Witness Printer took 37.14 ms. Allocated memory is still 174.1 MB. Free memory was 85.2 MB in the beginning and 82.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:40:18,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 115.3 MB. Free memory was 79.9 MB in the beginning and 79.8 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.42 ms. Allocated memory is still 115.3 MB. Free memory was 90.8 MB in the beginning and 70.7 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.44 ms. Allocated memory is still 115.3 MB. Free memory was 70.7 MB in the beginning and 69.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.06 ms. Allocated memory is still 115.3 MB. Free memory was 69.0 MB in the beginning and 67.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 283.15 ms. Allocated memory is still 115.3 MB. Free memory was 67.5 MB in the beginning and 43.8 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4157.89 ms. Allocated memory was 115.3 MB in the beginning and 174.1 MB in the end (delta: 58.7 MB). Free memory was 43.1 MB in the beginning and 85.2 MB in the end (delta: -42.1 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Witness Printer took 37.14 ms. Allocated memory is still 174.1 MB. Free memory was 85.2 MB in the beginning and 82.1 MB in the end (delta: 3.1 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 1172 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 97 PlacesBefore, 38 PlacesAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2978 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 283 SDtfs, 313 SDslu, 410 SDs, 0 SdLazy, 234 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s 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: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 248 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 10828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...