./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer --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 5e3a13afdd4064627690571de84930a283adde5b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:58:35,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:35,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:35,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:35,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:35,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:35,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:35,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:35,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:35,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:35,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:35,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:35,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:35,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:35,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:35,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:35,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:35,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:35,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:35,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:35,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:35,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:35,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:35,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:35,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:35,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:35,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:35,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:35,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:35,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:35,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:35,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:35,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:35,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:35,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:35,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:35,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:35,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:35,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:35,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:35,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:35,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:58:35,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:35,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:35,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:35,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:35,190 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:35,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:35,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:35,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:35,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:35,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:35,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:58:35,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:35,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:58:35,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:35,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:35,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:35,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:58:35,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:35,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:35,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:35,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:35,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:35,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:35,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:35,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:58:35,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:35,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:35,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:58:35,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:35,195 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:/tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e3a13afdd4064627690571de84930a283adde5b [2020-11-28 02:58:35,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:35,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:35,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:35,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:35,462 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:35,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc.i [2020-11-28 02:58:35,539 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/data/c281eb0bc/5ee64ee20e92411c9e0fcd8bd9b03528/FLAG009a5bc99 [2020-11-28 02:58:36,174 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:36,175 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc.i [2020-11-28 02:58:36,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/data/c281eb0bc/5ee64ee20e92411c9e0fcd8bd9b03528/FLAG009a5bc99 [2020-11-28 02:58:36,459 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/data/c281eb0bc/5ee64ee20e92411c9e0fcd8bd9b03528 [2020-11-28 02:58:36,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:36,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:36,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:36,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:36,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:36,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697a6cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36, skipping insertion in model container [2020-11-28 02:58:36,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:36,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:37,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:37,095 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:37,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:37,269 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:37,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37 WrapperNode [2020-11-28 02:58:37,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:37,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:37,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:37,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:37,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (1/1) ... [2020-11-28 02:58:37,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (1/1) ... [2020-11-28 02:58:37,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:37,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:37,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:37,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:37,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (1/1) ... [2020-11-28 02:58:37,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (1/1) ... [2020-11-28 02:58:37,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (1/1) ... [2020-11-28 02:58:37,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (1/1) ... [2020-11-28 02:58:37,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (1/1) ... [2020-11-28 02:58:37,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (1/1) ... [2020-11-28 02:58:37,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (1/1) ... [2020-11-28 02:58:37,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:37,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:37,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:37,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:37,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/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 [2020-11-28 02:58:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:58:37,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 02:58:37,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 02:58:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 02:58:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 02:58:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 02:58:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 02:58:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 02:58:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 02:58:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:37,484 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 02:58:38,016 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:38,017 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 02:58:38,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:38 BoogieIcfgContainer [2020-11-28 02:58:38,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:38,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:38,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:38,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:38,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:36" (1/3) ... [2020-11-28 02:58:38,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6135dd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:38, skipping insertion in model container [2020-11-28 02:58:38,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:37" (2/3) ... [2020-11-28 02:58:38,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6135dd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:38, skipping insertion in model container [2020-11-28 02:58:38,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:38" (3/3) ... [2020-11-28 02:58:38,032 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2020-11-28 02:58:38,043 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 02:58:38,044 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:38,048 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:58:38,049 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 02:58:38,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,099 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,099 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,103 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,103 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,103 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,103 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,109 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,117 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,117 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,117 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,117 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,124 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,124 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,124 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,124 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:38,128 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 02:58:38,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 02:58:38,178 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:38,179 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:38,180 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:38,180 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:38,180 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:38,180 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:38,180 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:38,180 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:38,195 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 02:58:38,198 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-28 02:58:38,202 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-28 02:58:38,203 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-28 02:58:38,270 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-28 02:58:38,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 02:58:38,275 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-28 02:58:38,279 INFO L116 LiptonReduction]: Number of co-enabled transitions 1356 [2020-11-28 02:58:39,188 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-28 02:58:40,930 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-28 02:58:41,041 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-11-28 02:58:41,041 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-28 02:58:41,045 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-28 02:58:41,070 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2020-11-28 02:58:41,072 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-11-28 02:58:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:58:41,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:41,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,084 INFO L82 PathProgramCache]: Analyzing trace with hash 982566713, now seen corresponding path program 1 times [2020-11-28 02:58:41,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593330413] [2020-11-28 02:58:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593330413] [2020-11-28 02:58:41,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:41,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556346498] [2020-11-28 02:58:41,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:41,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:41,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:41,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:41,316 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2020-11-28 02:58:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:41,344 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-28 02:58:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:41,346 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 02:58:41,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:41,360 INFO L225 Difference]: With dead ends: 282 [2020-11-28 02:58:41,361 INFO L226 Difference]: Without dead ends: 234 [2020-11-28 02:58:41,362 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 [2020-11-28 02:58:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-28 02:58:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-11-28 02:58:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-28 02:58:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-11-28 02:58:41,440 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-11-28 02:58:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,441 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-11-28 02:58:41,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-11-28 02:58:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:58:41,443 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:41,444 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,445 INFO L82 PathProgramCache]: Analyzing trace with hash 394788315, now seen corresponding path program 1 times [2020-11-28 02:58:41,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88172446] [2020-11-28 02:58:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88172446] [2020-11-28 02:58:41,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:41,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573401729] [2020-11-28 02:58:41,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:58:41,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:41,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:58:41,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:41,540 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 3 states. [2020-11-28 02:58:41,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:41,567 INFO L93 Difference]: Finished difference Result 180 states and 440 transitions. [2020-11-28 02:58:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:58:41,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 02:58:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:41,576 INFO L225 Difference]: With dead ends: 180 [2020-11-28 02:58:41,579 INFO L226 Difference]: Without dead ends: 180 [2020-11-28 02:58:41,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:41,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-28 02:58:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-11-28 02:58:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-28 02:58:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-11-28 02:58:41,604 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 9 [2020-11-28 02:58:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,604 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-11-28 02:58:41,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:58:41,604 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-11-28 02:58:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:58:41,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:41,607 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1410976981, now seen corresponding path program 1 times [2020-11-28 02:58:41,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147268520] [2020-11-28 02:58:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147268520] [2020-11-28 02:58:41,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:41,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741171200] [2020-11-28 02:58:41,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:41,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:41,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:41,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:41,684 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 4 states. [2020-11-28 02:58:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:41,724 INFO L93 Difference]: Finished difference Result 117 states and 251 transitions. [2020-11-28 02:58:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:41,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:58:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:41,727 INFO L225 Difference]: With dead ends: 117 [2020-11-28 02:58:41,727 INFO L226 Difference]: Without dead ends: 117 [2020-11-28 02:58:41,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:41,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-28 02:58:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-11-28 02:58:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-28 02:58:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 251 transitions. [2020-11-28 02:58:41,736 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 251 transitions. Word has length 11 [2020-11-28 02:58:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,737 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 251 transitions. [2020-11-28 02:58:41,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 251 transitions. [2020-11-28 02:58:41,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:58:41,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:58:41,741 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1834300814, now seen corresponding path program 1 times [2020-11-28 02:58:41,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906495238] [2020-11-28 02:58:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906495238] [2020-11-28 02:58:41,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:41,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796725129] [2020-11-28 02:58:41,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:41,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:41,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:41,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:41,874 INFO L87 Difference]: Start difference. First operand 117 states and 251 transitions. Second operand 5 states. [2020-11-28 02:58:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:41,911 INFO L93 Difference]: Finished difference Result 93 states and 203 transitions. [2020-11-28 02:58:41,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:41,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 02:58:41,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:41,915 INFO L225 Difference]: With dead ends: 93 [2020-11-28 02:58:41,915 INFO L226 Difference]: Without dead ends: 93 [2020-11-28 02:58:41,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:41,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-28 02:58:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-28 02:58:41,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-28 02:58:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 203 transitions. [2020-11-28 02:58:41,921 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 203 transitions. Word has length 14 [2020-11-28 02:58:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:41,921 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 203 transitions. [2020-11-28 02:58:41,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:41,921 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 203 transitions. [2020-11-28 02:58:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:41,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:41,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:41,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:58:41,923 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:41,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:41,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1160615665, now seen corresponding path program 1 times [2020-11-28 02:58:41,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:41,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038110167] [2020-11-28 02:58:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:41,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038110167] [2020-11-28 02:58:41,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:41,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:42,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691024395] [2020-11-28 02:58:42,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:42,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:42,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:42,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:42,002 INFO L87 Difference]: Start difference. First operand 93 states and 203 transitions. Second operand 4 states. [2020-11-28 02:58:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:42,054 INFO L93 Difference]: Finished difference Result 111 states and 233 transitions. [2020-11-28 02:58:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:42,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 02:58:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:42,056 INFO L225 Difference]: With dead ends: 111 [2020-11-28 02:58:42,056 INFO L226 Difference]: Without dead ends: 77 [2020-11-28 02:58:42,056 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 [2020-11-28 02:58:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-28 02:58:42,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-28 02:58:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-28 02:58:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 159 transitions. [2020-11-28 02:58:42,070 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 159 transitions. Word has length 17 [2020-11-28 02:58:42,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:42,071 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 159 transitions. [2020-11-28 02:58:42,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:42,071 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 159 transitions. [2020-11-28 02:58:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:42,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:42,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:42,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:58:42,074 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:42,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1741772653, now seen corresponding path program 2 times [2020-11-28 02:58:42,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:42,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247685137] [2020-11-28 02:58:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:42,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247685137] [2020-11-28 02:58:42,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:42,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:42,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987159803] [2020-11-28 02:58:42,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:42,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:42,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:42,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:42,195 INFO L87 Difference]: Start difference. First operand 77 states and 159 transitions. Second operand 5 states. [2020-11-28 02:58:42,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:42,241 INFO L93 Difference]: Finished difference Result 109 states and 220 transitions. [2020-11-28 02:58:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:42,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 02:58:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:42,242 INFO L225 Difference]: With dead ends: 109 [2020-11-28 02:58:42,242 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 02:58:42,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 02:58:42,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-28 02:58:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 02:58:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-11-28 02:58:42,246 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 17 [2020-11-28 02:58:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:42,247 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-11-28 02:58:42,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-11-28 02:58:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:42,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:42,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:42,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:58:42,248 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:42,249 INFO L82 PathProgramCache]: Analyzing trace with hash 477726785, now seen corresponding path program 3 times [2020-11-28 02:58:42,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:42,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125699221] [2020-11-28 02:58:42,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:42,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125699221] [2020-11-28 02:58:42,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:42,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:42,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170152002] [2020-11-28 02:58:42,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:42,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:42,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:42,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:42,348 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 5 states. [2020-11-28 02:58:42,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:42,387 INFO L93 Difference]: Finished difference Result 52 states and 98 transitions. [2020-11-28 02:58:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:42,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 02:58:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:42,387 INFO L225 Difference]: With dead ends: 52 [2020-11-28 02:58:42,387 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:58:42,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:58:42,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:58:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:58:42,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:58:42,388 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 02:58:42,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:42,388 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:42,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:42,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:42,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:58:42,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:58:42,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:42 BasicIcfg [2020-11-28 02:58:42,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:42,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:42,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:42,392 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:42,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:38" (3/4) ... [2020-11-28 02:58:42,395 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:58:42,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 02:58:42,401 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 02:58:42,401 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 02:58:42,405 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 02:58:42,405 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:58:42,406 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:42,406 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:42,442 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b6eda26a-c275-4b7f-90ca-69a945053b91/bin/uautomizer/witness.graphml [2020-11-28 02:58:42,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:42,444 INFO L168 Benchmark]: Toolchain (without parser) took 5977.01 ms. Allocated memory was 121.6 MB in the beginning and 182.5 MB in the end (delta: 60.8 MB). Free memory was 90.8 MB in the beginning and 130.5 MB in the end (delta: -39.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,445 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:42,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.25 ms. Allocated memory is still 121.6 MB. Free memory was 90.5 MB in the beginning and 76.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.96 ms. Allocated memory is still 121.6 MB. Free memory was 76.0 MB in the beginning and 74.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,457 INFO L168 Benchmark]: Boogie Preprocessor took 47.60 ms. Allocated memory is still 121.6 MB. Free memory was 74.3 MB in the beginning and 72.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:42,458 INFO L168 Benchmark]: RCFGBuilder took 624.31 ms. Allocated memory is still 121.6 MB. Free memory was 72.9 MB in the beginning and 89.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,459 INFO L168 Benchmark]: TraceAbstraction took 4366.64 ms. Allocated memory was 121.6 MB in the beginning and 182.5 MB in the end (delta: 60.8 MB). Free memory was 88.3 MB in the beginning and 132.6 MB in the end (delta: -44.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,461 INFO L168 Benchmark]: Witness Printer took 50.68 ms. Allocated memory is still 182.5 MB. Free memory was 132.6 MB in the beginning and 130.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:42,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 799.25 ms. Allocated memory is still 121.6 MB. Free memory was 90.5 MB in the beginning and 76.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.96 ms. Allocated memory is still 121.6 MB. Free memory was 76.0 MB in the beginning and 74.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.60 ms. Allocated memory is still 121.6 MB. Free memory was 74.3 MB in the beginning and 72.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 624.31 ms. Allocated memory is still 121.6 MB. Free memory was 72.9 MB in the beginning and 89.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4366.64 ms. Allocated memory was 121.6 MB in the beginning and 182.5 MB in the end (delta: 60.8 MB). Free memory was 88.3 MB in the beginning and 132.6 MB in the end (delta: -44.2 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * Witness Printer took 50.68 ms. Allocated memory is still 182.5 MB. Free memory was 132.6 MB in the beginning and 130.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 945 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 74 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 84 PlacesBefore, 31 PlacesAfterwards, 77 TransitionsBefore, 22 TransitionsAfterwards, 1356 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2462 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 111 SDtfs, 79 SDslu, 136 SDs, 0 SdLazy, 58 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2892 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...