./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_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/safe027_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 a867433c875ea6727c2cf004441bbef7e177744a .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 12:11:35,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:11:35,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:11:35,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:11:35,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:11:35,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:11:35,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:11:35,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:11:35,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:11:35,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:11:35,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:11:35,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:11:35,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:11:35,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:11:35,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:11:35,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:11:35,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:11:35,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:11:35,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:11:35,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:11:35,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:11:35,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:11:35,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:11:35,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:11:35,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:11:35,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:11:35,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:11:35,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:11:35,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:11:35,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:11:35,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:11:35,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:11:35,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:11:35,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:11:35,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:11:35,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:11:35,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:11:35,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:11:35,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:11:35,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:11:35,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:11:35,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:11:35,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:11:35,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:11:35,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:11:35,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:11:35,840 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:11:35,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:11:35,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:11:35,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:11:35,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:11:35,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:11:35,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:11:35,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:11:35,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:11:35,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:11:35,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:11:35,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:11:35,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:11:35,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:11:35,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:11:35,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:11:35,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:11:35,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:11:35,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:11:35,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:11:35,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:11:35,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:11:35,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:11:35,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:11:35,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:11:35,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a867433c875ea6727c2cf004441bbef7e177744a [2020-12-02 12:11:36,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:11:36,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:11:36,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:11:36,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:11:36,299 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:11:36,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2020-12-02 12:11:36,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/811e0a05d/cde8660bb53a461fa19b788cbf42fd80/FLAGbba62524e [2020-12-02 12:11:37,094 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:11:37,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2020-12-02 12:11:37,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/811e0a05d/cde8660bb53a461fa19b788cbf42fd80/FLAGbba62524e [2020-12-02 12:11:37,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/811e0a05d/cde8660bb53a461fa19b788cbf42fd80 [2020-12-02 12:11:37,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:11:37,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:11:37,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:11:37,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:11:37,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:11:37,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:37" (1/1) ... [2020-12-02 12:11:37,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c417a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:37, skipping insertion in model container [2020-12-02 12:11:37,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:37" (1/1) ... [2020-12-02 12:11:37,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:11:37,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:11:37,675 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/safe027_tso.opt.i[949,962] [2020-12-02 12:11:37,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:11:37,940 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:11:37,957 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/safe027_tso.opt.i[949,962] [2020-12-02 12:11:38,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:11:38,152 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:11:38,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38 WrapperNode [2020-12-02 12:11:38,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:11:38,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:11:38,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:11:38,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:11:38,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (1/1) ... [2020-12-02 12:11:38,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (1/1) ... [2020-12-02 12:11:38,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:11:38,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:11:38,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:11:38,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:11:38,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (1/1) ... [2020-12-02 12:11:38,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (1/1) ... [2020-12-02 12:11:38,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (1/1) ... [2020-12-02 12:11:38,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (1/1) ... [2020-12-02 12:11:38,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (1/1) ... [2020-12-02 12:11:38,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (1/1) ... [2020-12-02 12:11:38,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (1/1) ... [2020-12-02 12:11:38,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:11:38,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:11:38,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:11:38,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:11:38,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (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 12:11:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:11:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:11:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:11:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:11:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:11:38,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:11:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:11:38,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:11:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:11:38,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:11:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-02 12:11:38,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-02 12:11:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:11:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:11:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:11:38,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:11:38,430 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 12:11:38,968 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:11:38,969 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:11:38,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:38 BoogieIcfgContainer [2020-12-02 12:11:38,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:11:38,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:11:38,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:11:38,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:11:38,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:11:37" (1/3) ... [2020-12-02 12:11:38,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33af149e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:38, skipping insertion in model container [2020-12-02 12:11:38,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:38" (2/3) ... [2020-12-02 12:11:38,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33af149e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:38, skipping insertion in model container [2020-12-02 12:11:38,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:38" (3/3) ... [2020-12-02 12:11:38,980 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2020-12-02 12:11:38,998 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:11:38,998 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:11:39,002 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:11:39,003 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:11:39,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,046 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,050 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,050 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,057 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,057 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,057 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,057 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,058 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,058 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,058 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,058 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,059 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,059 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,059 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,060 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,062 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,063 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,069 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,069 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,069 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,070 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,072 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,073 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,076 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,076 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,077 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,077 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:39,079 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:11:39,092 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-02 12:11:39,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:11:39,115 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:11:39,116 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:11:39,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:11:39,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:11:39,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:11:39,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:11:39,117 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:11:39,131 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:11:39,134 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-02 12:11:39,137 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-02 12:11:39,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2020-12-02 12:11:39,214 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2020-12-02 12:11:39,214 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:11:39,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-02 12:11:39,223 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-02 12:11:41,482 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-02 12:11:42,810 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-02 12:11:42,916 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-02 12:11:43,159 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-02 12:11:43,266 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-02 12:11:43,537 INFO L131 LiptonReduction]: Checked pairs total: 3161 [2020-12-02 12:11:43,538 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-02 12:11:43,544 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-02 12:11:43,592 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-02 12:11:43,595 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-02 12:11:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:11:43,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:43,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:43,605 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash -545263439, now seen corresponding path program 1 times [2020-12-02 12:11:43,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:43,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537144585] [2020-12-02 12:11:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:43,994 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 12:11:43,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537144585] [2020-12-02 12:11:43,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:43,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:11:43,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210122979] [2020-12-02 12:11:44,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:44,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:44,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:44,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:44,022 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-02 12:11:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:44,113 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2020-12-02 12:11:44,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:44,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-02 12:11:44,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:44,150 INFO L225 Difference]: With dead ends: 832 [2020-12-02 12:11:44,150 INFO L226 Difference]: Without dead ends: 553 [2020-12-02 12:11:44,151 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 12:11:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-02 12:11:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-12-02 12:11:44,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-12-02 12:11:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1851 transitions. [2020-12-02 12:11:44,277 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1851 transitions. Word has length 10 [2020-12-02 12:11:44,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:44,278 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1851 transitions. [2020-12-02 12:11:44,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:44,279 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1851 transitions. [2020-12-02 12:11:44,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:11:44,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:44,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:44,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:11:44,282 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:44,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:44,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1160874164, now seen corresponding path program 1 times [2020-12-02 12:11:44,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:44,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138971433] [2020-12-02 12:11:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:44,382 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 12:11:44,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138971433] [2020-12-02 12:11:44,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:44,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:11:44,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669742799] [2020-12-02 12:11:44,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:44,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:44,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:44,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:44,387 INFO L87 Difference]: Start difference. First operand 553 states and 1851 transitions. Second operand 3 states. [2020-12-02 12:11:44,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:44,405 INFO L93 Difference]: Finished difference Result 526 states and 1743 transitions. [2020-12-02 12:11:44,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:44,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-02 12:11:44,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:44,411 INFO L225 Difference]: With dead ends: 526 [2020-12-02 12:11:44,411 INFO L226 Difference]: Without dead ends: 526 [2020-12-02 12:11:44,412 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 12:11:44,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-02 12:11:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-02 12:11:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-02 12:11:44,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-02 12:11:44,453 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 11 [2020-12-02 12:11:44,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:44,454 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-02 12:11:44,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-02 12:11:44,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:11:44,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:44,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:44,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:11:44,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:44,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:44,466 INFO L82 PathProgramCache]: Analyzing trace with hash 276701328, now seen corresponding path program 1 times [2020-12-02 12:11:44,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:44,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879318032] [2020-12-02 12:11:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:44,578 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 12:11:44,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879318032] [2020-12-02 12:11:44,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:44,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:44,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895644911] [2020-12-02 12:11:44,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:44,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:44,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:44,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:44,582 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-02 12:11:44,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:44,626 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-12-02 12:11:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:44,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:11:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:44,631 INFO L225 Difference]: With dead ends: 682 [2020-12-02 12:11:44,631 INFO L226 Difference]: Without dead ends: 394 [2020-12-02 12:11:44,632 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 12:11:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-12-02 12:11:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-12-02 12:11:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-02 12:11:44,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-12-02 12:11:44,647 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-12-02 12:11:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:44,649 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-12-02 12:11:44,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-12-02 12:11:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:11:44,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:44,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:44,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:11:44,651 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:44,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1446350552, now seen corresponding path program 1 times [2020-12-02 12:11:44,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:44,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408851544] [2020-12-02 12:11:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:44,736 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 12:11:44,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408851544] [2020-12-02 12:11:44,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:44,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:11:44,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712356800] [2020-12-02 12:11:44,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:44,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:44,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:44,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:44,744 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-12-02 12:11:44,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:44,764 INFO L93 Difference]: Finished difference Result 376 states and 1155 transitions. [2020-12-02 12:11:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:44,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-02 12:11:44,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:44,768 INFO L225 Difference]: With dead ends: 376 [2020-12-02 12:11:44,768 INFO L226 Difference]: Without dead ends: 376 [2020-12-02 12:11:44,769 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 12:11:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-02 12:11:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-12-02 12:11:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-02 12:11:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2020-12-02 12:11:44,783 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2020-12-02 12:11:44,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:44,784 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2020-12-02 12:11:44,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:44,784 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2020-12-02 12:11:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:11:44,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:44,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:44,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:11:44,785 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:44,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:44,786 INFO L82 PathProgramCache]: Analyzing trace with hash 367079963, now seen corresponding path program 1 times [2020-12-02 12:11:44,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:44,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593159659] [2020-12-02 12:11:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:44,844 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 12:11:44,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593159659] [2020-12-02 12:11:44,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:44,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:44,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452738657] [2020-12-02 12:11:44,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:44,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:44,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:44,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:44,848 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 5 states. [2020-12-02 12:11:44,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:44,883 INFO L93 Difference]: Finished difference Result 466 states and 1398 transitions. [2020-12-02 12:11:44,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:44,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:11:44,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:44,886 INFO L225 Difference]: With dead ends: 466 [2020-12-02 12:11:44,886 INFO L226 Difference]: Without dead ends: 226 [2020-12-02 12:11:44,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-02 12:11:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-02 12:11:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-02 12:11:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2020-12-02 12:11:44,896 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2020-12-02 12:11:44,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:44,896 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2020-12-02 12:11:44,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:44,896 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2020-12-02 12:11:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:11:44,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:44,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:44,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:11:44,898 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:44,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1626162599, now seen corresponding path program 1 times [2020-12-02 12:11:44,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:44,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072047461] [2020-12-02 12:11:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:44,996 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 12:11:44,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072047461] [2020-12-02 12:11:44,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:44,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:44,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331107589] [2020-12-02 12:11:44,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:44,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:45,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:45,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:45,001 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2020-12-02 12:11:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:45,053 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2020-12-02 12:11:45,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:45,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-02 12:11:45,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:45,055 INFO L225 Difference]: With dead ends: 287 [2020-12-02 12:11:45,055 INFO L226 Difference]: Without dead ends: 206 [2020-12-02 12:11:45,056 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 12:11:45,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-02 12:11:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-02 12:11:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-02 12:11:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-02 12:11:45,064 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2020-12-02 12:11:45,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:45,065 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-02 12:11:45,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:45,065 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-02 12:11:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:11:45,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:45,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:45,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:11:45,067 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:45,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:45,068 INFO L82 PathProgramCache]: Analyzing trace with hash 242504516, now seen corresponding path program 1 times [2020-12-02 12:11:45,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:45,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766032721] [2020-12-02 12:11:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:45,156 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 12:11:45,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766032721] [2020-12-02 12:11:45,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:45,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:45,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882822920] [2020-12-02 12:11:45,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:45,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:45,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:45,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:45,165 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2020-12-02 12:11:45,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:45,225 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2020-12-02 12:11:45,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:11:45,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:11:45,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:45,228 INFO L225 Difference]: With dead ends: 227 [2020-12-02 12:11:45,228 INFO L226 Difference]: Without dead ends: 162 [2020-12-02 12:11:45,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:45,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-02 12:11:45,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-02 12:11:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-02 12:11:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2020-12-02 12:11:45,235 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2020-12-02 12:11:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:45,235 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2020-12-02 12:11:45,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:45,236 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2020-12-02 12:11:45,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:11:45,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:45,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:45,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:11:45,243 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:45,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:45,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1073574531, now seen corresponding path program 1 times [2020-12-02 12:11:45,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:45,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995173887] [2020-12-02 12:11:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:45,340 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 12:11:45,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995173887] [2020-12-02 12:11:45,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:45,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:11:45,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077706400] [2020-12-02 12:11:45,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:11:45,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:45,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:11:45,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:45,343 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2020-12-02 12:11:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:45,422 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2020-12-02 12:11:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:11:45,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:11:45,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:45,423 INFO L225 Difference]: With dead ends: 158 [2020-12-02 12:11:45,424 INFO L226 Difference]: Without dead ends: 125 [2020-12-02 12:11:45,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:11:45,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-02 12:11:45,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-02 12:11:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-02 12:11:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2020-12-02 12:11:45,429 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2020-12-02 12:11:45,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:45,430 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2020-12-02 12:11:45,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:11:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2020-12-02 12:11:45,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:45,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:45,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:45,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:11:45,432 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:45,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:45,432 INFO L82 PathProgramCache]: Analyzing trace with hash -678185987, now seen corresponding path program 1 times [2020-12-02 12:11:45,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:45,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792861866] [2020-12-02 12:11:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:45,477 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 12:11:45,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792861866] [2020-12-02 12:11:45,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:45,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:45,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668242618] [2020-12-02 12:11:45,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:45,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:45,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:45,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:45,480 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 4 states. [2020-12-02 12:11:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:45,501 INFO L93 Difference]: Finished difference Result 166 states and 368 transitions. [2020-12-02 12:11:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:45,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-02 12:11:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:45,502 INFO L225 Difference]: With dead ends: 166 [2020-12-02 12:11:45,503 INFO L226 Difference]: Without dead ends: 127 [2020-12-02 12:11:45,503 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 12:11:45,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-02 12:11:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-02 12:11:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-02 12:11:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-02 12:11:45,508 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-02 12:11:45,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:45,508 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-02 12:11:45,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:45,508 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-02 12:11:45,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:45,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:45,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:45,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:11:45,510 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:45,510 INFO L82 PathProgramCache]: Analyzing trace with hash -972384293, now seen corresponding path program 1 times [2020-12-02 12:11:45,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:45,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103187896] [2020-12-02 12:11:45,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:45,553 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 12:11:45,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103187896] [2020-12-02 12:11:45,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:45,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:45,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632790277] [2020-12-02 12:11:45,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:45,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:45,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:45,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:45,555 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2020-12-02 12:11:45,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:45,577 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2020-12-02 12:11:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:45,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-02 12:11:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:45,578 INFO L225 Difference]: With dead ends: 142 [2020-12-02 12:11:45,579 INFO L226 Difference]: Without dead ends: 87 [2020-12-02 12:11:45,579 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 12:11:45,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-02 12:11:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-12-02 12:11:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-02 12:11:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2020-12-02 12:11:45,582 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2020-12-02 12:11:45,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:45,583 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2020-12-02 12:11:45,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:45,583 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-12-02 12:11:45,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:45,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:45,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:45,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:11:45,584 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:45,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:45,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2140587643, now seen corresponding path program 2 times [2020-12-02 12:11:45,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:45,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154951864] [2020-12-02 12:11:45,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:45,647 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 12:11:45,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154951864] [2020-12-02 12:11:45,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:45,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:11:45,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960825747] [2020-12-02 12:11:45,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 12:11:45,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:45,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 12:11:45,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:11:45,650 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2020-12-02 12:11:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:45,694 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-12-02 12:11:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:11:45,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-02 12:11:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:45,695 INFO L225 Difference]: With dead ends: 81 [2020-12-02 12:11:45,695 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:11:45,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:11:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:11:45,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:11:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:11:45,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:11:45,696 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-02 12:11:45,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:45,697 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:11:45,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 12:11:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:11:45,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:11:45,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:11:45,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:11:45 BasicIcfg [2020-12-02 12:11:45,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:11:45,702 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:11:45,702 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:11:45,702 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:11:45,703 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:38" (3/4) ... [2020-12-02 12:11:45,706 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:11:45,714 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:11:45,714 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:11:45,714 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:11:45,715 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-02 12:11:45,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-02 12:11:45,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:11:45,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:45,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:45,764 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:11:45,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:11:45,766 INFO L168 Benchmark]: Toolchain (without parser) took 8401.03 ms. Allocated memory was 46.1 MB in the beginning and 148.9 MB in the end (delta: 102.8 MB). Free memory was 21.7 MB in the beginning and 62.3 MB in the end (delta: -40.6 MB). Peak memory consumption was 64.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:45,766 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 46.1 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:11:45,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.46 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.5 MB in the beginning and 32.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:45,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.20 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 30.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:45,768 INFO L168 Benchmark]: Boogie Preprocessor took 59.64 ms. Allocated memory is still 56.6 MB. Free memory was 30.3 MB in the beginning and 28.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:45,769 INFO L168 Benchmark]: RCFGBuilder took 667.55 ms. Allocated memory is still 56.6 MB. Free memory was 28.8 MB in the beginning and 34.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:45,770 INFO L168 Benchmark]: TraceAbstraction took 6728.48 ms. Allocated memory was 56.6 MB in the beginning and 148.9 MB in the end (delta: 92.3 MB). Free memory was 34.2 MB in the beginning and 65.4 MB in the end (delta: -31.3 MB). Peak memory consumption was 60.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:45,770 INFO L168 Benchmark]: Witness Printer took 62.87 ms. Allocated memory is still 148.9 MB. Free memory was 65.4 MB in the beginning and 62.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:45,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 46.1 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 787.46 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.5 MB in the beginning and 32.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.20 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 30.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.64 ms. Allocated memory is still 56.6 MB. Free memory was 30.3 MB in the beginning and 28.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 667.55 ms. Allocated memory is still 56.6 MB. Free memory was 28.8 MB in the beginning and 34.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6728.48 ms. Allocated memory was 56.6 MB in the beginning and 148.9 MB in the end (delta: 92.3 MB). Free memory was 34.2 MB in the beginning and 65.4 MB in the end (delta: -31.3 MB). Peak memory consumption was 60.5 MB. Max. memory is 16.1 GB. * Witness Printer took 62.87 ms. Allocated memory is still 148.9 MB. Free memory was 65.4 MB in the beginning and 62.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1210 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.4s, 98 PlacesBefore, 38 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3161 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 236 SDtfs, 273 SDslu, 323 SDs, 0 SdLazy, 170 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 7317 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...