./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe011_tso.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_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/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 4f9168ff295249f67b2765c0795aeaeb041d1bf4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 13:54:08,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 13:54:08,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 13:54:08,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 13:54:08,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 13:54:08,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 13:54:08,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 13:54:08,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 13:54:08,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 13:54:08,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 13:54:08,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 13:54:08,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 13:54:08,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 13:54:08,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 13:54:08,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 13:54:08,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 13:54:08,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 13:54:08,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 13:54:08,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 13:54:08,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 13:54:08,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 13:54:08,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 13:54:08,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 13:54:08,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 13:54:08,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 13:54:08,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 13:54:08,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 13:54:08,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 13:54:08,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 13:54:08,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 13:54:08,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 13:54:08,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 13:54:08,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 13:54:08,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 13:54:08,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 13:54:08,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 13:54:08,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 13:54:08,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 13:54:08,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 13:54:08,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 13:54:08,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 13:54:08,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 13:54:08,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 13:54:08,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 13:54:08,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 13:54:08,593 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 13:54:08,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 13:54:08,594 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 13:54:08,594 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 13:54:08,594 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 13:54:08,594 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 13:54:08,594 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 13:54:08,594 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 13:54:08,594 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 13:54:08,594 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 13:54:08,595 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 13:54:08,595 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 13:54:08,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 13:54:08,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 13:54:08,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 13:54:08,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 13:54:08,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 13:54:08,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 13:54:08,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 13:54:08,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 13:54:08,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 13:54:08,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 13:54:08,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 13:54:08,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 13:54:08,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 13:54:08,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 13:54:08,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 13:54:08,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 13:54:08,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 13:54:08,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 13:54:08,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 13:54:08,598 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 13:54:08,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 13:54:08,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 13:54:08,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 13:54:08,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 13:54:08,598 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_8322acdf-0849-4958-a1e0-014a2787a367/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9168ff295249f67b2765c0795aeaeb041d1bf4 [2020-12-09 13:54:08,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 13:54:08,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 13:54:08,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 13:54:08,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 13:54:08,817 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 13:54:08,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i [2020-12-09 13:54:08,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/data/97bd09d70/2d428cdcfe1147a897b03da7937e1c0e/FLAG1fafcb6e9 [2020-12-09 13:54:09,279 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 13:54:09,279 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i [2020-12-09 13:54:09,289 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/data/97bd09d70/2d428cdcfe1147a897b03da7937e1c0e/FLAG1fafcb6e9 [2020-12-09 13:54:09,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/data/97bd09d70/2d428cdcfe1147a897b03da7937e1c0e [2020-12-09 13:54:09,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 13:54:09,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 13:54:09,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 13:54:09,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 13:54:09,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 13:54:09,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1969e7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09, skipping insertion in model container [2020-12-09 13:54:09,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 13:54:09,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 13:54:09,458 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_8322acdf-0849-4958-a1e0-014a2787a367/sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i[949,962] [2020-12-09 13:54:09,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 13:54:09,565 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 13:54:09,573 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_8322acdf-0849-4958-a1e0-014a2787a367/sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i[949,962] [2020-12-09 13:54:09,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 13:54:09,641 INFO L208 MainTranslator]: Completed translation [2020-12-09 13:54:09,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09 WrapperNode [2020-12-09 13:54:09,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 13:54:09,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 13:54:09,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 13:54:09,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 13:54:09,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 13:54:09,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 13:54:09,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 13:54:09,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 13:54:09,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (1/1) ... [2020-12-09 13:54:09,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 13:54:09,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 13:54:09,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 13:54:09,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 13:54:09,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/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 13:54:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 13:54:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 13:54:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 13:54:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 13:54:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 13:54:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 13:54:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 13:54:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 13:54:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 13:54:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 13:54:09,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 13:54:09,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 13:54:09,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 13:54:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 13:54:09,748 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 13:54:09,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 13:54:09,989 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 13:54:09,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:54:09 BoogieIcfgContainer [2020-12-09 13:54:09,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 13:54:09,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 13:54:09,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 13:54:09,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 13:54:09,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:54:09" (1/3) ... [2020-12-09 13:54:09,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3499682f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:54:09, skipping insertion in model container [2020-12-09 13:54:09,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:54:09" (2/3) ... [2020-12-09 13:54:09,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3499682f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:54:09, skipping insertion in model container [2020-12-09 13:54:09,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:54:09" (3/3) ... [2020-12-09 13:54:09,997 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2020-12-09 13:54:10,006 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 13:54:10,007 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 13:54:10,009 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 13:54:10,009 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 13:54:10,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,031 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,034 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,034 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,034 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,034 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,034 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,035 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,035 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,036 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,036 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,036 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,036 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,036 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,037 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,037 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,037 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,037 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,037 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,038 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,038 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,038 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,038 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,045 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,046 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,048 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,048 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 13:54:10,050 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 13:54:10,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 13:54:10,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 13:54:10,080 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 13:54:10,080 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 13:54:10,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 13:54:10,081 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 13:54:10,081 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 13:54:10,081 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 13:54:10,081 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 13:54:10,092 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 13:54:10,094 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-09 13:54:10,097 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-09 13:54:10,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-09 13:54:10,138 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-09 13:54:10,138 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 13:54:10,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 13:54:10,145 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 13:54:11,779 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-09 13:54:11,975 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-09 13:54:12,042 INFO L131 LiptonReduction]: Checked pairs total: 2448 [2020-12-09 13:54:12,042 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-09 13:54:12,046 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 13:54:12,064 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 13:54:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 13:54:12,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 13:54:12,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:12,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:12,072 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:12,077 INFO L82 PathProgramCache]: Analyzing trace with hash 70130421, now seen corresponding path program 1 times [2020-12-09 13:54:12,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:12,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535270894] [2020-12-09 13:54:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:12,212 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 13:54:12,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535270894] [2020-12-09 13:54:12,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:12,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 13:54:12,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797574296] [2020-12-09 13:54:12,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 13:54:12,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 13:54:12,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 13:54:12,226 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 13:54:12,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:12,247 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 13:54:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 13:54:12,248 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 13:54:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:12,262 INFO L225 Difference]: With dead ends: 362 [2020-12-09 13:54:12,262 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 13:54:12,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 13:54:12,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 13:54:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 13:54:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 13:54:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 13:54:12,315 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 13:54:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:12,316 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 13:54:12,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 13:54:12,316 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 13:54:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 13:54:12,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:12,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:12,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 13:54:12,318 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:12,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2120938041, now seen corresponding path program 1 times [2020-12-09 13:54:12,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:12,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598913726] [2020-12-09 13:54:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:12,416 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 13:54:12,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598913726] [2020-12-09 13:54:12,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:12,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 13:54:12,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767363169] [2020-12-09 13:54:12,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:12,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:12,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:12,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:12,420 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 13:54:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:12,454 INFO L93 Difference]: Finished difference Result 572 states and 1557 transitions. [2020-12-09 13:54:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:54:12,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 13:54:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:12,458 INFO L225 Difference]: With dead ends: 572 [2020-12-09 13:54:12,458 INFO L226 Difference]: Without dead ends: 420 [2020-12-09 13:54:12,459 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 13:54:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-12-09 13:54:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 340. [2020-12-09 13:54:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-12-09 13:54:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 926 transitions. [2020-12-09 13:54:12,488 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 926 transitions. Word has length 9 [2020-12-09 13:54:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:12,488 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 926 transitions. [2020-12-09 13:54:12,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 926 transitions. [2020-12-09 13:54:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 13:54:12,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:12,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:12,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 13:54:12,491 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1222306100, now seen corresponding path program 1 times [2020-12-09 13:54:12,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:12,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229600941] [2020-12-09 13:54:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:12,549 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 13:54:12,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229600941] [2020-12-09 13:54:12,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:12,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:12,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100790026] [2020-12-09 13:54:12,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:54:12,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:12,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:54:12,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:12,551 INFO L87 Difference]: Start difference. First operand 340 states and 926 transitions. Second operand 5 states. [2020-12-09 13:54:12,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:12,586 INFO L93 Difference]: Finished difference Result 464 states and 1193 transitions. [2020-12-09 13:54:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 13:54:12,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 13:54:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:12,589 INFO L225 Difference]: With dead ends: 464 [2020-12-09 13:54:12,589 INFO L226 Difference]: Without dead ends: 378 [2020-12-09 13:54:12,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 13:54:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-12-09 13:54:12,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 286. [2020-12-09 13:54:12,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-12-09 13:54:12,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 766 transitions. [2020-12-09 13:54:12,602 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 766 transitions. Word has length 10 [2020-12-09 13:54:12,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:12,603 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 766 transitions. [2020-12-09 13:54:12,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:54:12,603 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 766 transitions. [2020-12-09 13:54:12,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 13:54:12,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:12,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:12,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 13:54:12,604 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:12,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:12,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1325562886, now seen corresponding path program 1 times [2020-12-09 13:54:12,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:12,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409517958] [2020-12-09 13:54:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:12,656 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 13:54:12,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409517958] [2020-12-09 13:54:12,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:12,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:12,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910783871] [2020-12-09 13:54:12,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:54:12,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:12,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:54:12,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:12,658 INFO L87 Difference]: Start difference. First operand 286 states and 766 transitions. Second operand 5 states. [2020-12-09 13:54:12,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:12,695 INFO L93 Difference]: Finished difference Result 436 states and 1097 transitions. [2020-12-09 13:54:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 13:54:12,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 13:54:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:12,698 INFO L225 Difference]: With dead ends: 436 [2020-12-09 13:54:12,699 INFO L226 Difference]: Without dead ends: 358 [2020-12-09 13:54:12,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 13:54:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-12-09 13:54:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 270. [2020-12-09 13:54:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-09 13:54:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 712 transitions. [2020-12-09 13:54:12,711 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 712 transitions. Word has length 10 [2020-12-09 13:54:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:12,711 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 712 transitions. [2020-12-09 13:54:12,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:54:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 712 transitions. [2020-12-09 13:54:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 13:54:12,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:12,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:12,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 13:54:12,714 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:12,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1857187595, now seen corresponding path program 1 times [2020-12-09 13:54:12,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:12,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146174137] [2020-12-09 13:54:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:12,765 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 13:54:12,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146174137] [2020-12-09 13:54:12,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:12,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:12,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412576637] [2020-12-09 13:54:12,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:54:12,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:12,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:54:12,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:12,768 INFO L87 Difference]: Start difference. First operand 270 states and 712 transitions. Second operand 5 states. [2020-12-09 13:54:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:12,808 INFO L93 Difference]: Finished difference Result 382 states and 967 transitions. [2020-12-09 13:54:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 13:54:12,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 13:54:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:12,811 INFO L225 Difference]: With dead ends: 382 [2020-12-09 13:54:12,811 INFO L226 Difference]: Without dead ends: 340 [2020-12-09 13:54:12,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 13:54:12,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-12-09 13:54:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 264. [2020-12-09 13:54:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-12-09 13:54:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 690 transitions. [2020-12-09 13:54:12,819 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 690 transitions. Word has length 11 [2020-12-09 13:54:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:12,819 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 690 transitions. [2020-12-09 13:54:12,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:54:12,819 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 690 transitions. [2020-12-09 13:54:12,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 13:54:12,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:12,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:12,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 13:54:12,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:12,821 INFO L82 PathProgramCache]: Analyzing trace with hash 575547449, now seen corresponding path program 1 times [2020-12-09 13:54:12,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:12,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171633037] [2020-12-09 13:54:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:12,860 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 13:54:12,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171633037] [2020-12-09 13:54:12,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:12,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:54:12,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828649603] [2020-12-09 13:54:12,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:54:12,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:12,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:54:12,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:12,861 INFO L87 Difference]: Start difference. First operand 264 states and 690 transitions. Second operand 5 states. [2020-12-09 13:54:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:12,892 INFO L93 Difference]: Finished difference Result 418 states and 1021 transitions. [2020-12-09 13:54:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 13:54:12,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 13:54:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:12,894 INFO L225 Difference]: With dead ends: 418 [2020-12-09 13:54:12,894 INFO L226 Difference]: Without dead ends: 328 [2020-12-09 13:54:12,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 13:54:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-12-09 13:54:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 248. [2020-12-09 13:54:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-09 13:54:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 632 transitions. [2020-12-09 13:54:12,907 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 632 transitions. Word has length 12 [2020-12-09 13:54:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:12,907 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 632 transitions. [2020-12-09 13:54:12,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:54:12,908 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 632 transitions. [2020-12-09 13:54:12,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 13:54:12,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:12,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:12,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 13:54:12,909 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:12,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:12,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2140910896, now seen corresponding path program 1 times [2020-12-09 13:54:12,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:12,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915018223] [2020-12-09 13:54:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:12,950 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 13:54:12,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915018223] [2020-12-09 13:54:12,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:12,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:54:12,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556966366] [2020-12-09 13:54:12,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 13:54:12,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:12,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 13:54:12,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:54:12,952 INFO L87 Difference]: Start difference. First operand 248 states and 632 transitions. Second operand 6 states. [2020-12-09 13:54:12,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:12,985 INFO L93 Difference]: Finished difference Result 299 states and 726 transitions. [2020-12-09 13:54:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 13:54:12,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 13:54:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:12,986 INFO L225 Difference]: With dead ends: 299 [2020-12-09 13:54:12,987 INFO L226 Difference]: Without dead ends: 158 [2020-12-09 13:54:12,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 13:54:12,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-09 13:54:12,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2020-12-09 13:54:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-09 13:54:12,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 318 transitions. [2020-12-09 13:54:12,991 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 318 transitions. Word has length 12 [2020-12-09 13:54:12,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:12,991 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 318 transitions. [2020-12-09 13:54:12,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 13:54:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 318 transitions. [2020-12-09 13:54:12,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 13:54:12,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:12,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:12,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 13:54:12,992 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:12,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1024807024, now seen corresponding path program 1 times [2020-12-09 13:54:12,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:12,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606438651] [2020-12-09 13:54:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:13,024 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 13:54:13,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606438651] [2020-12-09 13:54:13,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:13,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 13:54:13,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331914466] [2020-12-09 13:54:13,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 13:54:13,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:13,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 13:54:13,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 13:54:13,025 INFO L87 Difference]: Start difference. First operand 142 states and 318 transitions. Second operand 4 states. [2020-12-09 13:54:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:13,045 INFO L93 Difference]: Finished difference Result 152 states and 308 transitions. [2020-12-09 13:54:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 13:54:13,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 13:54:13,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:13,046 INFO L225 Difference]: With dead ends: 152 [2020-12-09 13:54:13,046 INFO L226 Difference]: Without dead ends: 120 [2020-12-09 13:54:13,046 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 13:54:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-09 13:54:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-12-09 13:54:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-09 13:54:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 243 transitions. [2020-12-09 13:54:13,049 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 243 transitions. Word has length 13 [2020-12-09 13:54:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:13,049 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 243 transitions. [2020-12-09 13:54:13,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 13:54:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 243 transitions. [2020-12-09 13:54:13,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 13:54:13,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:13,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:13,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 13:54:13,050 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:13,050 INFO L82 PathProgramCache]: Analyzing trace with hash -704924573, now seen corresponding path program 1 times [2020-12-09 13:54:13,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:13,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710878105] [2020-12-09 13:54:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:13,083 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 13:54:13,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710878105] [2020-12-09 13:54:13,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:13,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 13:54:13,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462396351] [2020-12-09 13:54:13,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 13:54:13,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:13,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 13:54:13,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 13:54:13,085 INFO L87 Difference]: Start difference. First operand 120 states and 243 transitions. Second operand 5 states. [2020-12-09 13:54:13,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:13,114 INFO L93 Difference]: Finished difference Result 106 states and 197 transitions. [2020-12-09 13:54:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 13:54:13,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 13:54:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:13,115 INFO L225 Difference]: With dead ends: 106 [2020-12-09 13:54:13,115 INFO L226 Difference]: Without dead ends: 77 [2020-12-09 13:54:13,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 13:54:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-09 13:54:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-12-09 13:54:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-09 13:54:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2020-12-09 13:54:13,118 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 14 [2020-12-09 13:54:13,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:13,118 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2020-12-09 13:54:13,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 13:54:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2020-12-09 13:54:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 13:54:13,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 13:54:13,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 13:54:13,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 13:54:13,119 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 13:54:13,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 13:54:13,119 INFO L82 PathProgramCache]: Analyzing trace with hash -237179704, now seen corresponding path program 1 times [2020-12-09 13:54:13,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 13:54:13,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744131535] [2020-12-09 13:54:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 13:54:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 13:54:13,164 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 13:54:13,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744131535] [2020-12-09 13:54:13,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 13:54:13,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 13:54:13,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809029848] [2020-12-09 13:54:13,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 13:54:13,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 13:54:13,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 13:54:13,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 13:54:13,166 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 6 states. [2020-12-09 13:54:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 13:54:13,187 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-12-09 13:54:13,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 13:54:13,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 13:54:13,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 13:54:13,188 INFO L225 Difference]: With dead ends: 67 [2020-12-09 13:54:13,188 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 13:54:13,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 13:54:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 13:54:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 13:54:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 13:54:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 13:54:13,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 13:54:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 13:54:13,189 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 13:54:13,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 13:54:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 13:54:13,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 13:54:13,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 13:54:13,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:54:13 BasicIcfg [2020-12-09 13:54:13,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 13:54:13,192 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 13:54:13,192 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 13:54:13,192 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 13:54:13,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:54:09" (3/4) ... [2020-12-09 13:54:13,194 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 13:54:13,198 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 13:54:13,199 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 13:54:13,199 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 13:54:13,202 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 13:54:13,202 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 13:54:13,202 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 13:54:13,202 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 13:54:13,227 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8322acdf-0849-4958-a1e0-014a2787a367/bin/utaipan/witness.graphml [2020-12-09 13:54:13,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 13:54:13,229 INFO L168 Benchmark]: Toolchain (without parser) took 3925.88 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 83.9 MB in the beginning and 55.9 MB in the end (delta: 28.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:13,229 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 123.7 MB. Free memory is still 101.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 13:54:13,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.09 ms. Allocated memory is still 123.7 MB. Free memory was 83.7 MB in the beginning and 78.0 MB in the end (delta: 5.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:13,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.34 ms. Allocated memory is still 123.7 MB. Free memory was 78.0 MB in the beginning and 76.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:13,230 INFO L168 Benchmark]: Boogie Preprocessor took 17.46 ms. Allocated memory is still 123.7 MB. Free memory was 76.4 MB in the beginning and 74.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 13:54:13,230 INFO L168 Benchmark]: RCFGBuilder took 300.51 ms. Allocated memory is still 123.7 MB. Free memory was 74.9 MB in the beginning and 52.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:13,231 INFO L168 Benchmark]: TraceAbstraction took 3199.48 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 52.8 MB in the beginning and 58.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:13,231 INFO L168 Benchmark]: Witness Printer took 36.15 ms. Allocated memory is still 148.9 MB. Free memory was 58.0 MB in the beginning and 55.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 13:54:13,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 123.7 MB. Free memory is still 101.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.09 ms. Allocated memory is still 123.7 MB. Free memory was 83.7 MB in the beginning and 78.0 MB in the end (delta: 5.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.34 ms. Allocated memory is still 123.7 MB. Free memory was 78.0 MB in the beginning and 76.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.46 ms. Allocated memory is still 123.7 MB. Free memory was 76.4 MB in the beginning and 74.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 300.51 ms. Allocated memory is still 123.7 MB. Free memory was 74.9 MB in the beginning and 52.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3199.48 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 52.8 MB in the beginning and 58.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * Witness Printer took 36.15 ms. Allocated memory is still 148.9 MB. Free memory was 58.0 MB in the beginning and 55.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 815 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2448 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 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 256 SDtfs, 270 SDslu, 436 SDs, 0 SdLazy, 155 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 432 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 5235 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...