./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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/safe034_tso.oepc.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 11443ba5fcb940082a69ee7d992d4714d4f5f72b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:34:07,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:34:07,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:34:07,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:34:07,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:34:07,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:34:07,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:34:07,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:34:08,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:34:08,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:34:08,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:34:08,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:34:08,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:34:08,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:34:08,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:34:08,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:34:08,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:34:08,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:34:08,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:34:08,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:34:08,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:34:08,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:34:08,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:34:08,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:34:08,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:34:08,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:34:08,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:34:08,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:34:08,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:34:08,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:34:08,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:34:08,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:34:08,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:34:08,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:34:08,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:34:08,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:34:08,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:34:08,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:34:08,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:34:08,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:34:08,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:34:08,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:34:08,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:34:08,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:34:08,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:34:08,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:34:08,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:34:08,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:34:08,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:34:08,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:34:08,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:34:08,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:34:08,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:34:08,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:34:08,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:34:08,117 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:34:08,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:34:08,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:34:08,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:34:08,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:34:08,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:34:08,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:34:08,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:34:08,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:34:08,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:34:08,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:34:08,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:34:08,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:34:08,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:34:08,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:34:08,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:34:08,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11443ba5fcb940082a69ee7d992d4714d4f5f72b [2020-10-26 00:34:08,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:34:08,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:34:08,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:34:08,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:34:08,571 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:34:08,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i [2020-10-26 00:34:08,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1a58da0/3b35d693a8fc4a66be7b5bdfd7956900/FLAGc93698839 [2020-10-26 00:34:09,387 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:34:09,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.oepc.i [2020-10-26 00:34:09,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1a58da0/3b35d693a8fc4a66be7b5bdfd7956900/FLAGc93698839 [2020-10-26 00:34:09,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1a58da0/3b35d693a8fc4a66be7b5bdfd7956900 [2020-10-26 00:34:09,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:34:09,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:34:09,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:34:09,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:34:09,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:34:09,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:34:09" (1/1) ... [2020-10-26 00:34:09,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5baa8cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:09, skipping insertion in model container [2020-10-26 00:34:09,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:34:09" (1/1) ... [2020-10-26 00:34:09,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:34:09,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:34:10,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:34:10,119 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:34:10,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:34:10,308 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:34:10,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10 WrapperNode [2020-10-26 00:34:10,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:34:10,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:34:10,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:34:10,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:34:10,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (1/1) ... [2020-10-26 00:34:10,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (1/1) ... [2020-10-26 00:34:10,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:34:10,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:34:10,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:34:10,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:34:10,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (1/1) ... [2020-10-26 00:34:10,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (1/1) ... [2020-10-26 00:34:10,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (1/1) ... [2020-10-26 00:34:10,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (1/1) ... [2020-10-26 00:34:10,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (1/1) ... [2020-10-26 00:34:10,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (1/1) ... [2020-10-26 00:34:10,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (1/1) ... [2020-10-26 00:34:10,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:34:10,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:34:10,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:34:10,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:34:10,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (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 [2020-10-26 00:34:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:34:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:34:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:34:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:34:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:34:10,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:34:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:34:10,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:34:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:34:10,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:34:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:34:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:34:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:34:10,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:34:10,468 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:34:10,828 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:34:10,833 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:34:10,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:34:10 BoogieIcfgContainer [2020-10-26 00:34:10,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:34:10,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:34:10,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:34:10,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:34:10,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:34:09" (1/3) ... [2020-10-26 00:34:10,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262fd1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:34:10, skipping insertion in model container [2020-10-26 00:34:10,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:10" (2/3) ... [2020-10-26 00:34:10,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262fd1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:34:10, skipping insertion in model container [2020-10-26 00:34:10,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:34:10" (3/3) ... [2020-10-26 00:34:10,857 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-10-26 00:34:10,878 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:34:10,879 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:34:10,883 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:34:10,884 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:34:10,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,925 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,925 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,926 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,927 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,927 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,927 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,928 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,928 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,928 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,928 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,929 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,929 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,931 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,950 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,950 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:10,958 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:34:10,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:34:10,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:34:10,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:34:10,995 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:34:10,995 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:34:10,995 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:34:10,996 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:34:10,996 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:34:10,996 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:34:11,009 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:34:11,012 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-26 00:34:11,015 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-26 00:34:11,017 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-26 00:34:11,069 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-26 00:34:11,069 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:34:11,077 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-26 00:34:11,083 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-26 00:34:12,909 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-26 00:34:13,019 INFO L131 LiptonReduction]: Checked pairs total: 2658 [2020-10-26 00:34:13,019 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-10-26 00:34:13,025 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-26 00:34:13,053 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-26 00:34:13,056 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-26 00:34:13,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:34:13,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:13,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:13,064 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:13,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:13,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1479466227, now seen corresponding path program 1 times [2020-10-26 00:34:13,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:13,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267256057] [2020-10-26 00:34:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:13,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267256057] [2020-10-26 00:34:13,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:13,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:34:13,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831847130] [2020-10-26 00:34:13,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:34:13,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:13,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:34:13,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:34:13,365 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-26 00:34:13,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:13,409 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-26 00:34:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:34:13,411 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-26 00:34:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:13,428 INFO L225 Difference]: With dead ends: 362 [2020-10-26 00:34:13,428 INFO L226 Difference]: Without dead ends: 298 [2020-10-26 00:34:13,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:34:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-26 00:34:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-26 00:34:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-26 00:34:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-26 00:34:13,510 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-26 00:34:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:13,511 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-26 00:34:13,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:34:13,512 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-26 00:34:13,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:34:13,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:13,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:13,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:34:13,514 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:13,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:13,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1381176445, now seen corresponding path program 1 times [2020-10-26 00:34:13,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:13,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479220430] [2020-10-26 00:34:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:13,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479220430] [2020-10-26 00:34:13,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:13,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:34:13,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854023347] [2020-10-26 00:34:13,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:34:13,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:34:13,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:34:13,634 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-26 00:34:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:13,674 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-10-26 00:34:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:13,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-26 00:34:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:13,679 INFO L225 Difference]: With dead ends: 346 [2020-10-26 00:34:13,679 INFO L226 Difference]: Without dead ends: 282 [2020-10-26 00:34:13,680 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 [2020-10-26 00:34:13,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-26 00:34:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-26 00:34:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-26 00:34:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-10-26 00:34:13,703 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-10-26 00:34:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:13,703 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-10-26 00:34:13,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:34:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-10-26 00:34:13,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:34:13,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:13,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:13,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:34:13,706 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:13,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1310825236, now seen corresponding path program 1 times [2020-10-26 00:34:13,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:13,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083090164] [2020-10-26 00:34:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:13,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083090164] [2020-10-26 00:34:13,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:13,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:34:13,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599094423] [2020-10-26 00:34:13,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:34:13,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:13,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:34:13,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:34:13,795 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-10-26 00:34:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:13,850 INFO L93 Difference]: Finished difference Result 277 states and 699 transitions. [2020-10-26 00:34:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:13,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 00:34:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:13,853 INFO L225 Difference]: With dead ends: 277 [2020-10-26 00:34:13,854 INFO L226 Difference]: Without dead ends: 213 [2020-10-26 00:34:13,854 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 [2020-10-26 00:34:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-26 00:34:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-10-26 00:34:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-26 00:34:13,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 528 transitions. [2020-10-26 00:34:13,867 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 528 transitions. Word has length 10 [2020-10-26 00:34:13,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:13,868 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 528 transitions. [2020-10-26 00:34:13,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:34:13,868 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 528 transitions. [2020-10-26 00:34:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:34:13,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:13,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:13,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:34:13,871 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:13,872 INFO L82 PathProgramCache]: Analyzing trace with hash -346485744, now seen corresponding path program 1 times [2020-10-26 00:34:13,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:13,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45240805] [2020-10-26 00:34:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:13,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45240805] [2020-10-26 00:34:13,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:13,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:34:13,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618901715] [2020-10-26 00:34:13,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:34:13,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:13,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:34:13,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:34:13,966 INFO L87 Difference]: Start difference. First operand 213 states and 528 transitions. Second operand 5 states. [2020-10-26 00:34:14,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:14,022 INFO L93 Difference]: Finished difference Result 173 states and 387 transitions. [2020-10-26 00:34:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:34:14,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-26 00:34:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:14,024 INFO L225 Difference]: With dead ends: 173 [2020-10-26 00:34:14,025 INFO L226 Difference]: Without dead ends: 136 [2020-10-26 00:34:14,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:34:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-26 00:34:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-26 00:34:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-26 00:34:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-26 00:34:14,033 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-26 00:34:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:14,034 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-26 00:34:14,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:34:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-26 00:34:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:34:14,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:14,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:14,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:34:14,043 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:14,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:14,044 INFO L82 PathProgramCache]: Analyzing trace with hash 685431305, now seen corresponding path program 1 times [2020-10-26 00:34:14,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:14,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384060283] [2020-10-26 00:34:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:14,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384060283] [2020-10-26 00:34:14,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:14,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:34:14,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172573602] [2020-10-26 00:34:14,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:34:14,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:14,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:34:14,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:34:14,190 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-10-26 00:34:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:14,254 INFO L93 Difference]: Finished difference Result 119 states and 261 transitions. [2020-10-26 00:34:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:34:14,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-26 00:34:14,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:14,256 INFO L225 Difference]: With dead ends: 119 [2020-10-26 00:34:14,256 INFO L226 Difference]: Without dead ends: 109 [2020-10-26 00:34:14,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:34:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-26 00:34:14,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-26 00:34:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-26 00:34:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-26 00:34:14,262 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-26 00:34:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:14,262 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-26 00:34:14,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:34:14,263 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-26 00:34:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:34:14,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:14,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:14,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:34:14,264 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:14,265 INFO L82 PathProgramCache]: Analyzing trace with hash 461507696, now seen corresponding path program 1 times [2020-10-26 00:34:14,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:14,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048072352] [2020-10-26 00:34:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:14,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048072352] [2020-10-26 00:34:14,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:14,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:34:14,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419448217] [2020-10-26 00:34:14,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:34:14,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:14,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:34:14,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:34:14,332 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-10-26 00:34:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:14,353 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-10-26 00:34:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:34:14,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-26 00:34:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:14,355 INFO L225 Difference]: With dead ends: 135 [2020-10-26 00:34:14,355 INFO L226 Difference]: Without dead ends: 55 [2020-10-26 00:34:14,355 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 [2020-10-26 00:34:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-26 00:34:14,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-26 00:34:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-26 00:34:14,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-26 00:34:14,358 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-10-26 00:34:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:14,358 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-26 00:34:14,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:34:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-26 00:34:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:34:14,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:14,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:14,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:34:14,360 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:14,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:14,361 INFO L82 PathProgramCache]: Analyzing trace with hash 356647694, now seen corresponding path program 2 times [2020-10-26 00:34:14,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:14,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996246227] [2020-10-26 00:34:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:14,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996246227] [2020-10-26 00:34:14,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:14,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 00:34:14,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459736552] [2020-10-26 00:34:14,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:34:14,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:14,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:34:14,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:34:14,506 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 10 states. [2020-10-26 00:34:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:14,710 INFO L93 Difference]: Finished difference Result 87 states and 149 transitions. [2020-10-26 00:34:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 00:34:14,710 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-26 00:34:14,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:14,711 INFO L225 Difference]: With dead ends: 87 [2020-10-26 00:34:14,711 INFO L226 Difference]: Without dead ends: 63 [2020-10-26 00:34:14,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-26 00:34:14,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-26 00:34:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2020-10-26 00:34:14,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-26 00:34:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 102 transitions. [2020-10-26 00:34:14,716 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 102 transitions. Word has length 18 [2020-10-26 00:34:14,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:14,716 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 102 transitions. [2020-10-26 00:34:14,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:34:14,717 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 102 transitions. [2020-10-26 00:34:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:34:14,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:14,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:14,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:34:14,718 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:14,719 INFO L82 PathProgramCache]: Analyzing trace with hash -2018587562, now seen corresponding path program 3 times [2020-10-26 00:34:14,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:14,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467358880] [2020-10-26 00:34:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:14,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467358880] [2020-10-26 00:34:14,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:14,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 00:34:14,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840671409] [2020-10-26 00:34:14,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:34:14,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:14,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:34:14,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:34:14,846 INFO L87 Difference]: Start difference. First operand 59 states and 102 transitions. Second operand 10 states. [2020-10-26 00:34:15,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:15,014 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2020-10-26 00:34:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 00:34:15,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-26 00:34:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:15,017 INFO L225 Difference]: With dead ends: 73 [2020-10-26 00:34:15,017 INFO L226 Difference]: Without dead ends: 45 [2020-10-26 00:34:15,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-26 00:34:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-26 00:34:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2020-10-26 00:34:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 00:34:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-10-26 00:34:15,024 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-10-26 00:34:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:15,024 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-10-26 00:34:15,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:34:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-10-26 00:34:15,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:34:15,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:15,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:15,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:34:15,027 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:15,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:15,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1017008488, now seen corresponding path program 4 times [2020-10-26 00:34:15,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:15,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132054238] [2020-10-26 00:34:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:15,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132054238] [2020-10-26 00:34:15,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:15,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 00:34:15,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075029465] [2020-10-26 00:34:15,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:34:15,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:15,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:34:15,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:34:15,200 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 10 states. [2020-10-26 00:34:15,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:15,368 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2020-10-26 00:34:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 00:34:15,369 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-26 00:34:15,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:15,369 INFO L225 Difference]: With dead ends: 49 [2020-10-26 00:34:15,370 INFO L226 Difference]: Without dead ends: 27 [2020-10-26 00:34:15,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-26 00:34:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-26 00:34:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-26 00:34:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-26 00:34:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-26 00:34:15,372 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 18 [2020-10-26 00:34:15,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:15,373 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-26 00:34:15,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:34:15,373 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-10-26 00:34:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:34:15,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:15,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:15,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 00:34:15,374 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:15,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:15,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1533397848, now seen corresponding path program 5 times [2020-10-26 00:34:15,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:15,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699459428] [2020-10-26 00:34:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:15,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699459428] [2020-10-26 00:34:15,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:15,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 00:34:15,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006301888] [2020-10-26 00:34:15,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:34:15,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:15,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:34:15,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:34:15,525 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 10 states. [2020-10-26 00:34:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:15,599 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2020-10-26 00:34:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 00:34:15,599 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-26 00:34:15,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:15,602 INFO L225 Difference]: With dead ends: 26 [2020-10-26 00:34:15,602 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:34:15,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-26 00:34:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:34:15,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:34:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:34:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:34:15,604 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-26 00:34:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:15,604 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:34:15,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:34:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:34:15,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:34:15,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 00:34:15,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:34:15 BasicIcfg [2020-10-26 00:34:15,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:34:15,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:34:15,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:34:15,612 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:34:15,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:34:10" (3/4) ... [2020-10-26 00:34:15,615 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:34:15,621 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:34:15,621 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:34:15,621 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:34:15,626 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:34:15,626 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:34:15,627 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:34:15,627 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:34:15,685 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:34:15,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:34:15,687 INFO L168 Benchmark]: Toolchain (without parser) took 6038.62 ms. Allocated memory was 48.2 MB in the beginning and 142.6 MB in the end (delta: 94.4 MB). Free memory was 31.1 MB in the beginning and 97.2 MB in the end (delta: -66.1 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:15,687 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 37.7 MB. Free memory was 24.0 MB in the beginning and 24.0 MB in the end (delta: 17.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:34:15,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.76 ms. Allocated memory is still 48.2 MB. Free memory was 30.5 MB in the beginning and 30.0 MB in the end (delta: 462.3 kB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:15,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.61 ms. Allocated memory is still 48.2 MB. Free memory was 29.8 MB in the beginning and 27.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:15,689 INFO L168 Benchmark]: Boogie Preprocessor took 28.15 ms. Allocated memory is still 48.2 MB. Free memory was 27.9 MB in the beginning and 26.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:34:15,689 INFO L168 Benchmark]: RCFGBuilder took 451.53 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 26.5 MB in the beginning and 39.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:15,690 INFO L168 Benchmark]: TraceAbstraction took 4769.96 ms. Allocated memory was 58.7 MB in the beginning and 142.6 MB in the end (delta: 83.9 MB). Free memory was 38.9 MB in the beginning and 100.3 MB in the end (delta: -61.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:15,690 INFO L168 Benchmark]: Witness Printer took 73.65 ms. Allocated memory is still 142.6 MB. Free memory was 100.3 MB in the beginning and 97.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:15,694 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 37.7 MB. Free memory was 24.0 MB in the beginning and 24.0 MB in the end (delta: 17.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 655.76 ms. Allocated memory is still 48.2 MB. Free memory was 30.5 MB in the beginning and 30.0 MB in the end (delta: 462.3 kB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.61 ms. Allocated memory is still 48.2 MB. Free memory was 29.8 MB in the beginning and 27.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.15 ms. Allocated memory is still 48.2 MB. Free memory was 27.9 MB in the beginning and 26.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 451.53 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 26.5 MB in the beginning and 39.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4769.96 ms. Allocated memory was 58.7 MB in the beginning and 142.6 MB in the end (delta: 83.9 MB). Free memory was 38.9 MB in the beginning and 100.3 MB in the end (delta: -61.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Witness Printer took 73.65 ms. Allocated memory is still 142.6 MB. Free memory was 100.3 MB in the beginning and 97.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 948 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2658 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 216 SDtfs, 196 SDslu, 716 SDs, 0 SdLazy, 563 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 10170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...