./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ed4e776f61f45179464b0c5963a32fbca5f06af ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:06:11,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:06:11,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:06:11,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:06:11,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:06:11,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:06:11,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:06:11,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:06:11,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:06:11,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:06:11,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:06:11,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:06:11,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:06:11,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:06:11,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:06:11,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:06:11,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:06:11,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:06:11,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:06:11,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:06:11,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:06:11,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:06:11,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:06:11,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:06:11,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:06:11,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:06:11,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:06:11,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:06:11,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:06:11,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:06:11,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:06:11,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:06:11,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:06:11,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:06:11,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:06:11,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:06:11,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:06:11,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:06:11,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:06:11,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:06:11,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:06:11,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:06:11,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:06:11,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:06:11,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:06:11,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:06:11,224 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:06:11,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:06:11,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:06:11,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:06:11,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:06:11,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:06:11,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:06:11,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:06:11,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:06:11,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:06:11,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:06:11,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:06:11,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:06:11,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:06:11,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:06:11,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:06:11,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:06:11,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:06:11,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:06:11,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:06:11,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:06:11,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:06:11,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:06:11,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:06:11,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:06:11,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ed4e776f61f45179464b0c5963a32fbca5f06af [2020-12-02 12:06:11,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:06:11,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:06:11,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:06:11,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:06:11,713 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:06:11,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i [2020-12-02 12:06:11,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13a8945fc/10da431664e24bf68bf2a0b5388ae86b/FLAGf6262f52b [2020-12-02 12:06:12,531 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:06:12,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i [2020-12-02 12:06:12,557 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13a8945fc/10da431664e24bf68bf2a0b5388ae86b/FLAGf6262f52b [2020-12-02 12:06:12,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13a8945fc/10da431664e24bf68bf2a0b5388ae86b [2020-12-02 12:06:12,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:06:12,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:06:12,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:06:12,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:06:12,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:06:12,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:06:12" (1/1) ... [2020-12-02 12:06:12,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d13a7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:12, skipping insertion in model container [2020-12-02 12:06:12,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:06:12" (1/1) ... [2020-12-02 12:06:12,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:06:12,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:06:12,996 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i[949,962] [2020-12-02 12:06:13,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:06:13,247 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:06:13,260 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i[949,962] [2020-12-02 12:06:13,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:06:13,402 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:06:13,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13 WrapperNode [2020-12-02 12:06:13,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:06:13,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:06:13,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:06:13,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:06:13,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (1/1) ... [2020-12-02 12:06:13,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (1/1) ... [2020-12-02 12:06:13,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:06:13,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:06:13,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:06:13,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:06:13,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (1/1) ... [2020-12-02 12:06:13,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (1/1) ... [2020-12-02 12:06:13,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (1/1) ... [2020-12-02 12:06:13,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (1/1) ... [2020-12-02 12:06:13,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (1/1) ... [2020-12-02 12:06:13,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (1/1) ... [2020-12-02 12:06:13,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (1/1) ... [2020-12-02 12:06:13,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:06:13,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:06:13,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:06:13,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:06:13,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 12:06:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:06:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:06:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:06:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:06:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:06:13,647 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:06:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:06:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:06:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:06:13,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:06:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:06:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:06:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:06:13,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:06:13,653 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:06:14,296 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:06:14,296 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:06:14,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:06:14 BoogieIcfgContainer [2020-12-02 12:06:14,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:06:14,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:06:14,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:06:14,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:06:14,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:06:12" (1/3) ... [2020-12-02 12:06:14,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e310129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:06:14, skipping insertion in model container [2020-12-02 12:06:14,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:13" (2/3) ... [2020-12-02 12:06:14,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e310129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:06:14, skipping insertion in model container [2020-12-02 12:06:14,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:06:14" (3/3) ... [2020-12-02 12:06:14,311 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-12-02 12:06:14,330 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:06:14,330 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:06:14,336 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:06:14,337 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:06:14,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,386 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,386 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,387 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,387 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,390 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,390 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,394 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,394 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,399 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,399 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,399 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,416 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,416 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,419 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:14,421 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:06:14,436 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:06:14,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:06:14,464 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:06:14,464 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:06:14,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:06:14,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:06:14,465 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:06:14,465 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:06:14,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:06:14,481 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:06:14,484 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:06:14,488 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:06:14,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-02 12:06:14,566 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-02 12:06:14,566 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:06:14,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:06:14,593 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:06:17,064 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-02 12:06:17,262 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-02 12:06:18,227 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-02 12:06:18,572 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-02 12:06:18,740 INFO L131 LiptonReduction]: Checked pairs total: 2371 [2020-12-02 12:06:18,741 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-02 12:06:18,748 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-02 12:06:18,786 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-02 12:06:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-02 12:06:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:06:18,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:18,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:18,797 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:18,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:18,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1684989787, now seen corresponding path program 1 times [2020-12-02 12:06:18,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:18,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632686543] [2020-12-02 12:06:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:19,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632686543] [2020-12-02 12:06:19,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:19,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:06:19,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835820298] [2020-12-02 12:06:19,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:06:19,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:19,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:06:19,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:06:19,147 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-02 12:06:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:19,221 INFO L93 Difference]: Finished difference Result 468 states and 1286 transitions. [2020-12-02 12:06:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:06:19,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 12:06:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:19,242 INFO L225 Difference]: With dead ends: 468 [2020-12-02 12:06:19,242 INFO L226 Difference]: Without dead ends: 292 [2020-12-02 12:06:19,243 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 [2020-12-02 12:06:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-12-02 12:06:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 250. [2020-12-02 12:06:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-12-02 12:06:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 640 transitions. [2020-12-02 12:06:19,335 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 640 transitions. Word has length 8 [2020-12-02 12:06:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:19,337 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 640 transitions. [2020-12-02 12:06:19,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:06:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 640 transitions. [2020-12-02 12:06:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:06:19,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:19,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:19,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:06:19,339 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:19,340 INFO L82 PathProgramCache]: Analyzing trace with hash 695081323, now seen corresponding path program 1 times [2020-12-02 12:06:19,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:19,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991996785] [2020-12-02 12:06:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:19,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991996785] [2020-12-02 12:06:19,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:19,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:06:19,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135390986] [2020-12-02 12:06:19,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:06:19,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:06:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:06:19,439 INFO L87 Difference]: Start difference. First operand 250 states and 640 transitions. Second operand 3 states. [2020-12-02 12:06:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:19,452 INFO L93 Difference]: Finished difference Result 226 states and 558 transitions. [2020-12-02 12:06:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:06:19,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-02 12:06:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:19,456 INFO L225 Difference]: With dead ends: 226 [2020-12-02 12:06:19,456 INFO L226 Difference]: Without dead ends: 174 [2020-12-02 12:06:19,457 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 [2020-12-02 12:06:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-02 12:06:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 158. [2020-12-02 12:06:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-02 12:06:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 398 transitions. [2020-12-02 12:06:19,471 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 398 transitions. Word has length 9 [2020-12-02 12:06:19,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:19,472 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 398 transitions. [2020-12-02 12:06:19,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:06:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 398 transitions. [2020-12-02 12:06:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:06:19,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:19,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:19,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:06:19,474 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:19,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:19,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2036864499, now seen corresponding path program 1 times [2020-12-02 12:06:19,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:19,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20542046] [2020-12-02 12:06:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:19,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20542046] [2020-12-02 12:06:19,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:19,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:06:19,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118608692] [2020-12-02 12:06:19,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:06:19,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:19,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:06:19,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:06:19,560 INFO L87 Difference]: Start difference. First operand 158 states and 398 transitions. Second operand 4 states. [2020-12-02 12:06:19,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:19,609 INFO L93 Difference]: Finished difference Result 230 states and 562 transitions. [2020-12-02 12:06:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:06:19,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:06:19,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:19,616 INFO L225 Difference]: With dead ends: 230 [2020-12-02 12:06:19,616 INFO L226 Difference]: Without dead ends: 134 [2020-12-02 12:06:19,617 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 [2020-12-02 12:06:19,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-02 12:06:19,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-12-02 12:06:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-02 12:06:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 318 transitions. [2020-12-02 12:06:19,647 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 318 transitions. Word has length 11 [2020-12-02 12:06:19,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:19,647 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 318 transitions. [2020-12-02 12:06:19,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:06:19,648 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 318 transitions. [2020-12-02 12:06:19,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:06:19,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:19,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:19,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:06:19,650 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:19,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:19,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1140467669, now seen corresponding path program 1 times [2020-12-02 12:06:19,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:19,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550831367] [2020-12-02 12:06:19,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:19,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550831367] [2020-12-02 12:06:19,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:19,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:06:19,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220904179] [2020-12-02 12:06:19,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:06:19,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:19,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:06:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:06:19,760 INFO L87 Difference]: Start difference. First operand 134 states and 318 transitions. Second operand 5 states. [2020-12-02 12:06:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:19,826 INFO L93 Difference]: Finished difference Result 218 states and 496 transitions. [2020-12-02 12:06:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:06:19,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:06:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:19,829 INFO L225 Difference]: With dead ends: 218 [2020-12-02 12:06:19,829 INFO L226 Difference]: Without dead ends: 126 [2020-12-02 12:06:19,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:06:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-02 12:06:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 98. [2020-12-02 12:06:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-02 12:06:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 216 transitions. [2020-12-02 12:06:19,836 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 216 transitions. Word has length 12 [2020-12-02 12:06:19,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:19,836 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 216 transitions. [2020-12-02 12:06:19,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:06:19,837 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 216 transitions. [2020-12-02 12:06:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:06:19,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:19,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:19,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:06:19,839 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:19,840 INFO L82 PathProgramCache]: Analyzing trace with hash -841103600, now seen corresponding path program 1 times [2020-12-02 12:06:19,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:19,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632000802] [2020-12-02 12:06:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:19,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632000802] [2020-12-02 12:06:19,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:19,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:06:19,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751077252] [2020-12-02 12:06:19,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:06:19,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:19,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:06:19,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:06:19,952 INFO L87 Difference]: Start difference. First operand 98 states and 216 transitions. Second operand 4 states. [2020-12-02 12:06:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:19,990 INFO L93 Difference]: Finished difference Result 116 states and 237 transitions. [2020-12-02 12:06:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:06:19,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:06:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:19,992 INFO L225 Difference]: With dead ends: 116 [2020-12-02 12:06:19,993 INFO L226 Difference]: Without dead ends: 84 [2020-12-02 12:06:19,993 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 [2020-12-02 12:06:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-02 12:06:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-12-02 12:06:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-02 12:06:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 169 transitions. [2020-12-02 12:06:20,007 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 169 transitions. Word has length 13 [2020-12-02 12:06:20,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:20,008 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 169 transitions. [2020-12-02 12:06:20,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:06:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 169 transitions. [2020-12-02 12:06:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:06:20,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:20,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:20,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:06:20,015 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:20,016 INFO L82 PathProgramCache]: Analyzing trace with hash -646597307, now seen corresponding path program 1 times [2020-12-02 12:06:20,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:20,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233389433] [2020-12-02 12:06:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:20,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233389433] [2020-12-02 12:06:20,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:20,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:06:20,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178325943] [2020-12-02 12:06:20,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:06:20,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:20,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:06:20,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:06:20,118 INFO L87 Difference]: Start difference. First operand 84 states and 169 transitions. Second operand 5 states. [2020-12-02 12:06:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:20,169 INFO L93 Difference]: Finished difference Result 86 states and 160 transitions. [2020-12-02 12:06:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:06:20,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:06:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:20,171 INFO L225 Difference]: With dead ends: 86 [2020-12-02 12:06:20,171 INFO L226 Difference]: Without dead ends: 66 [2020-12-02 12:06:20,171 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 [2020-12-02 12:06:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-02 12:06:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-02 12:06:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-02 12:06:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 118 transitions. [2020-12-02 12:06:20,176 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 118 transitions. Word has length 14 [2020-12-02 12:06:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:20,176 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 118 transitions. [2020-12-02 12:06:20,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:06:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 118 transitions. [2020-12-02 12:06:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:06:20,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:20,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:20,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:06:20,178 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:20,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:20,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1430343700, now seen corresponding path program 1 times [2020-12-02 12:06:20,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:20,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084500079] [2020-12-02 12:06:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:20,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084500079] [2020-12-02 12:06:20,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:20,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:06:20,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006834399] [2020-12-02 12:06:20,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:06:20,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:20,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:06:20,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:06:20,287 INFO L87 Difference]: Start difference. First operand 66 states and 118 transitions. Second operand 6 states. [2020-12-02 12:06:20,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:20,357 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-12-02 12:06:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:06:20,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:06:20,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:20,362 INFO L225 Difference]: With dead ends: 63 [2020-12-02 12:06:20,363 INFO L226 Difference]: Without dead ends: 56 [2020-12-02 12:06:20,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:06:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-02 12:06:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-12-02 12:06:20,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-02 12:06:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 90 transitions. [2020-12-02 12:06:20,371 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 90 transitions. Word has length 15 [2020-12-02 12:06:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:20,371 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 90 transitions. [2020-12-02 12:06:20,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:06:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 90 transitions. [2020-12-02 12:06:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:06:20,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:20,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:20,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:06:20,374 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:20,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:20,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1271805033, now seen corresponding path program 1 times [2020-12-02 12:06:20,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:20,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212269075] [2020-12-02 12:06:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:20,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212269075] [2020-12-02 12:06:20,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:20,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:06:20,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183236121] [2020-12-02 12:06:20,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:06:20,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:20,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:06:20,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:06:20,505 INFO L87 Difference]: Start difference. First operand 52 states and 90 transitions. Second operand 4 states. [2020-12-02 12:06:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:20,520 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2020-12-02 12:06:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:06:20,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-02 12:06:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:20,521 INFO L225 Difference]: With dead ends: 51 [2020-12-02 12:06:20,521 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:06:20,522 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 [2020-12-02 12:06:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:06:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:06:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:06:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:06:20,523 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-02 12:06:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:20,523 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:06:20,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:06:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:06:20,524 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:06:20,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:06:20,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:06:20 BasicIcfg [2020-12-02 12:06:20,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:06:20,529 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:06:20,529 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:06:20,529 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:06:20,530 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:06:14" (3/4) ... [2020-12-02 12:06:20,535 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:06:20,544 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:06:20,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:06:20,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:06:20,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:06:20,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:06:20,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:06:20,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:06:20,622 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:06:20,626 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:06:20,628 INFO L168 Benchmark]: Toolchain (without parser) took 7905.81 ms. Allocated memory was 48.2 MB in the beginning and 125.8 MB in the end (delta: 77.6 MB). Free memory was 23.9 MB in the beginning and 48.2 MB in the end (delta: -24.3 MB). Peak memory consumption was 54.0 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:20,632 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:06:20,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.03 ms. Allocated memory is still 48.2 MB. Free memory was 23.7 MB in the beginning and 26.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:20,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.31 ms. Allocated memory is still 48.2 MB. Free memory was 26.2 MB in the beginning and 24.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:20,634 INFO L168 Benchmark]: Boogie Preprocessor took 29.98 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:06:20,636 INFO L168 Benchmark]: RCFGBuilder took 808.50 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 37.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:20,639 INFO L168 Benchmark]: TraceAbstraction took 6227.41 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 36.8 MB in the beginning and 51.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:20,640 INFO L168 Benchmark]: Witness Printer took 97.95 ms. Allocated memory is still 125.8 MB. Free memory was 51.4 MB in the beginning and 48.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:20,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 679.03 ms. Allocated memory is still 48.2 MB. Free memory was 23.7 MB in the beginning and 26.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.31 ms. Allocated memory is still 48.2 MB. Free memory was 26.2 MB in the beginning and 24.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.98 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 808.50 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 37.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6227.41 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 36.8 MB in the beginning and 51.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. * Witness Printer took 97.95 ms. Allocated memory is still 125.8 MB. Free memory was 51.4 MB in the beginning and 48.2 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 845 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.2s, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 2371 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 137 SDtfs, 172 SDslu, 150 SDs, 0 SdLazy, 84 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 90 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 4001 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...