./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.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_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/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 ea0dd35677cfacf05fc27f5cca6df484a5bc4e8e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:41:15,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:41:15,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:41:15,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:41:15,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:41:15,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:41:15,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:41:15,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:41:15,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:41:15,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:41:15,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:41:15,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:41:15,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:41:15,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:41:15,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:41:15,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:41:15,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:41:15,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:41:15,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:41:15,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:41:15,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:41:15,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:41:15,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:41:15,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:41:15,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:41:15,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:41:15,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:41:15,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:41:15,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:41:15,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:41:15,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:41:15,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:41:15,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:41:15,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:41:15,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:41:15,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:41:15,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:41:15,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:41:15,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:41:15,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:41:15,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:41:15,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:41:15,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:41:15,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:41:15,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:41:15,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:41:15,262 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:41:15,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:41:15,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:41:15,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:41:15,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:41:15,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:41:15,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:41:15,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:41:15,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:41:15,265 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:41:15,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:41:15,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:41:15,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:41:15,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:41:15,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:41:15,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:41:15,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:41:15,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:41:15,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:41:15,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:41:15,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:41:15,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:41:15,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:41:15,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:41:15,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:41:15,268 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_34598d36-6b18-448c-bd3f-be3df7ec2380/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0dd35677cfacf05fc27f5cca6df484a5bc4e8e [2020-11-29 22:41:15,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:41:15,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:41:15,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:41:15,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:41:15,661 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:41:15,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2020-11-29 22:41:15,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/data/f9183e3a0/1775cb29bd5a42d3b121daf9788fecf8/FLAG3da76e79d [2020-11-29 22:41:16,379 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:41:16,384 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2020-11-29 22:41:16,415 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/data/f9183e3a0/1775cb29bd5a42d3b121daf9788fecf8/FLAG3da76e79d [2020-11-29 22:41:16,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/data/f9183e3a0/1775cb29bd5a42d3b121daf9788fecf8 [2020-11-29 22:41:16,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:41:16,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:41:16,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:41:16,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:41:16,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:41:16,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:41:16" (1/1) ... [2020-11-29 22:41:16,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8020b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:16, skipping insertion in model container [2020-11-29 22:41:16,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:41:16" (1/1) ... [2020-11-29 22:41:16,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:41:16,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:41:17,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:41:17,039 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:41:17,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:41:17,199 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:41:17,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17 WrapperNode [2020-11-29 22:41:17,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:41:17,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:41:17,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:41:17,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:41:17,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (1/1) ... [2020-11-29 22:41:17,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (1/1) ... [2020-11-29 22:41:17,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:41:17,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:41:17,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:41:17,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:41:17,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (1/1) ... [2020-11-29 22:41:17,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (1/1) ... [2020-11-29 22:41:17,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (1/1) ... [2020-11-29 22:41:17,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (1/1) ... [2020-11-29 22:41:17,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (1/1) ... [2020-11-29 22:41:17,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (1/1) ... [2020-11-29 22:41:17,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (1/1) ... [2020-11-29 22:41:17,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:41:17,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:41:17,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:41:17,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:41:17,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/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 [2020-11-29 22:41:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:41:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 22:41:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:41:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:41:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 22:41:17,421 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 22:41:17,422 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 22:41:17,422 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 22:41:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 22:41:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 22:41:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:41:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 22:41:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:41:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:41:17,426 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 22:41:17,972 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:41:17,973 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 22:41:17,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:41:17 BoogieIcfgContainer [2020-11-29 22:41:17,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:41:17,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:41:17,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:41:17,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:41:17,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:41:16" (1/3) ... [2020-11-29 22:41:17,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f0bc52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:41:17, skipping insertion in model container [2020-11-29 22:41:17,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:17" (2/3) ... [2020-11-29 22:41:17,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f0bc52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:41:17, skipping insertion in model container [2020-11-29 22:41:17,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:41:17" (3/3) ... [2020-11-29 22:41:17,987 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-11-29 22:41:18,004 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 22:41:18,005 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:41:18,010 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:41:18,011 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 22:41:18,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,050 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,051 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,060 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,061 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,070 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,071 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,071 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:41:18,077 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 22:41:18,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 22:41:18,126 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:41:18,127 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:41:18,127 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:41:18,127 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:41:18,127 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:41:18,127 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:41:18,128 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:41:18,128 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:41:18,145 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 22:41:18,146 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-29 22:41:18,150 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-29 22:41:18,151 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-29 22:41:18,215 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-29 22:41:18,215 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 22:41:18,220 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 57 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. [2020-11-29 22:41:18,225 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 22:41:18,528 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-29 22:41:20,841 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-11-29 22:41:20,954 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-29 22:41:21,007 INFO L131 LiptonReduction]: Checked pairs total: 3181 [2020-11-29 22:41:21,007 INFO L133 LiptonReduction]: Total number of compositions: 74 [2020-11-29 22:41:21,013 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-29 22:41:21,039 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-29 22:41:21,041 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-29 22:41:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:41:21,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:41:21,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:21,049 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:41:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:21,054 INFO L82 PathProgramCache]: Analyzing trace with hash 2101373786, now seen corresponding path program 1 times [2020-11-29 22:41:21,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:21,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234824395] [2020-11-29 22:41:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:21,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234824395] [2020-11-29 22:41:21,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:21,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 22:41:21,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014948864] [2020-11-29 22:41:21,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:41:21,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:21,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:41:21,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:41:21,281 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-29 22:41:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:21,323 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-29 22:41:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:41:21,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 22:41:21,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:41:21,362 INFO L225 Difference]: With dead ends: 282 [2020-11-29 22:41:21,363 INFO L226 Difference]: Without dead ends: 218 [2020-11-29 22:41:21,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:41:21,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-29 22:41:21,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-29 22:41:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-29 22:41:21,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-29 22:41:21,456 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-29 22:41:21,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:41:21,457 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-29 22:41:21,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:41:21,459 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-29 22:41:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:41:21,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:41:21,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:21,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:41:21,465 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:41:21,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:21,469 INFO L82 PathProgramCache]: Analyzing trace with hash 718076695, now seen corresponding path program 1 times [2020-11-29 22:41:21,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:21,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785126146] [2020-11-29 22:41:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:21,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785126146] [2020-11-29 22:41:21,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:21,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:41:21,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410283350] [2020-11-29 22:41:21,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:41:21,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:21,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:41:21,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:41:21,635 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-29 22:41:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:21,671 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-29 22:41:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:41:21,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 22:41:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:41:21,675 INFO L225 Difference]: With dead ends: 242 [2020-11-29 22:41:21,675 INFO L226 Difference]: Without dead ends: 146 [2020-11-29 22:41:21,676 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 [2020-11-29 22:41:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-29 22:41:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-29 22:41:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-29 22:41:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-29 22:41:21,687 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-29 22:41:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:41:21,688 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-29 22:41:21,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:41:21,688 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-29 22:41:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:41:21,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:41:21,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:21,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:41:21,690 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:41:21,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:21,691 INFO L82 PathProgramCache]: Analyzing trace with hash -676988276, now seen corresponding path program 1 times [2020-11-29 22:41:21,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:21,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604779876] [2020-11-29 22:41:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:21,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604779876] [2020-11-29 22:41:21,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:21,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 22:41:21,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543471895] [2020-11-29 22:41:21,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:41:21,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:21,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:41:21,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:41:21,748 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-29 22:41:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:21,760 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-11-29 22:41:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:41:21,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-29 22:41:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:41:21,763 INFO L225 Difference]: With dead ends: 144 [2020-11-29 22:41:21,763 INFO L226 Difference]: Without dead ends: 144 [2020-11-29 22:41:21,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:41:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-29 22:41:21,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-29 22:41:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-29 22:41:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-29 22:41:21,773 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-11-29 22:41:21,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:41:21,773 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-29 22:41:21,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:41:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-29 22:41:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:41:21,774 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:41:21,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:21,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:41:21,775 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:41:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:21,775 INFO L82 PathProgramCache]: Analyzing trace with hash 799592622, now seen corresponding path program 1 times [2020-11-29 22:41:21,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:21,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375704153] [2020-11-29 22:41:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:21,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375704153] [2020-11-29 22:41:21,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:21,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:41:21,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945251894] [2020-11-29 22:41:21,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:41:21,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:41:21,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:41:21,844 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-11-29 22:41:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:21,861 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-11-29 22:41:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:41:21,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 22:41:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:41:21,863 INFO L225 Difference]: With dead ends: 182 [2020-11-29 22:41:21,863 INFO L226 Difference]: Without dead ends: 86 [2020-11-29 22:41:21,864 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 [2020-11-29 22:41:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-29 22:41:21,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-29 22:41:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-29 22:41:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-11-29 22:41:21,869 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 12 [2020-11-29 22:41:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:41:21,870 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-11-29 22:41:21,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:41:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-11-29 22:41:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 22:41:21,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:41:21,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:21,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:41:21,871 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:41:21,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:21,872 INFO L82 PathProgramCache]: Analyzing trace with hash -492629862, now seen corresponding path program 1 times [2020-11-29 22:41:21,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:21,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767329588] [2020-11-29 22:41:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:21,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767329588] [2020-11-29 22:41:21,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:21,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:41:21,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376983168] [2020-11-29 22:41:21,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:41:21,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:21,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:41:21,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:41:21,990 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-11-29 22:41:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:22,041 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-11-29 22:41:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:41:22,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 22:41:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:41:22,042 INFO L225 Difference]: With dead ends: 99 [2020-11-29 22:41:22,042 INFO L226 Difference]: Without dead ends: 77 [2020-11-29 22:41:22,043 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 [2020-11-29 22:41:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-29 22:41:22,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-29 22:41:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-29 22:41:22,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-11-29 22:41:22,047 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-11-29 22:41:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:41:22,047 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-11-29 22:41:22,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:41:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-11-29 22:41:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:41:22,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:41:22,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:22,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:41:22,049 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:41:22,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:22,049 INFO L82 PathProgramCache]: Analyzing trace with hash 430385268, now seen corresponding path program 1 times [2020-11-29 22:41:22,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:22,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667596606] [2020-11-29 22:41:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:22,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667596606] [2020-11-29 22:41:22,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:22,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:41:22,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864972464] [2020-11-29 22:41:22,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:41:22,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:22,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:41:22,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:41:22,122 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 5 states. [2020-11-29 22:41:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:22,175 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-11-29 22:41:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:41:22,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 22:41:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:41:22,177 INFO L225 Difference]: With dead ends: 78 [2020-11-29 22:41:22,177 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 22:41:22,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:41:22,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 22:41:22,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-29 22:41:22,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 22:41:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-11-29 22:41:22,181 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-11-29 22:41:22,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:41:22,181 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-11-29 22:41:22,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:41:22,181 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-11-29 22:41:22,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 22:41:22,182 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:41:22,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:22,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:41:22,182 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:41:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:22,183 INFO L82 PathProgramCache]: Analyzing trace with hash 493445752, now seen corresponding path program 1 times [2020-11-29 22:41:22,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:22,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951292192] [2020-11-29 22:41:22,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:22,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951292192] [2020-11-29 22:41:22,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:22,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:41:22,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145108789] [2020-11-29 22:41:22,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:41:22,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:41:22,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:41:22,343 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 6 states. [2020-11-29 22:41:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:22,411 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-11-29 22:41:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:41:22,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 22:41:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:41:22,413 INFO L225 Difference]: With dead ends: 60 [2020-11-29 22:41:22,413 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 22:41:22,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:41:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 22:41:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 22:41:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 22:41:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-29 22:41:22,417 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-11-29 22:41:22,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:41:22,418 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-29 22:41:22,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:41:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-29 22:41:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:41:22,419 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:41:22,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:22,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 22:41:22,419 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:41:22,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:22,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1724594669, now seen corresponding path program 1 times [2020-11-29 22:41:22,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:22,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187233700] [2020-11-29 22:41:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:22,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187233700] [2020-11-29 22:41:22,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:22,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:41:22,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486876122] [2020-11-29 22:41:22,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:41:22,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:22,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:41:22,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:41:22,483 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 3 states. [2020-11-29 22:41:22,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:22,489 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-11-29 22:41:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:41:22,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 22:41:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:41:22,490 INFO L225 Difference]: With dead ends: 53 [2020-11-29 22:41:22,490 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:41:22,491 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 [2020-11-29 22:41:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:41:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:41:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:41:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:41:22,491 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 22:41:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:41:22,492 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:41:22,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:41:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:41:22,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:41:22,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 22:41:22,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:41:22 BasicIcfg [2020-11-29 22:41:22,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:41:22,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:41:22,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:41:22,497 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:41:22,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:41:17" (3/4) ... [2020-11-29 22:41:22,500 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:41:22,506 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 22:41:22,507 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 22:41:22,507 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 22:41:22,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 22:41:22,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:41:22,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:41:22,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:41:22,578 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_34598d36-6b18-448c-bd3f-be3df7ec2380/bin/uautomizer/witness.graphml [2020-11-29 22:41:22,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:41:22,579 INFO L168 Benchmark]: Toolchain (without parser) took 5950.23 ms. Allocated memory was 79.7 MB in the beginning and 157.3 MB in the end (delta: 77.6 MB). Free memory was 58.7 MB in the beginning and 105.0 MB in the end (delta: -46.3 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:22,580 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 79.7 MB. Free memory was 59.5 MB in the beginning and 59.4 MB in the end (delta: 43.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:41:22,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.52 ms. Allocated memory is still 79.7 MB. Free memory was 58.6 MB in the beginning and 35.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:22,581 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.68 ms. Allocated memory is still 79.7 MB. Free memory was 35.1 MB in the beginning and 33.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:22,581 INFO L168 Benchmark]: Boogie Preprocessor took 34.33 ms. Allocated memory is still 79.7 MB. Free memory was 33.1 MB in the beginning and 31.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:41:22,582 INFO L168 Benchmark]: RCFGBuilder took 641.75 ms. Allocated memory is still 107.0 MB. Free memory was 85.3 MB in the beginning and 65.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:22,582 INFO L168 Benchmark]: TraceAbstraction took 4516.14 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 64.4 MB in the beginning and 107.1 MB in the end (delta: -42.7 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:22,582 INFO L168 Benchmark]: Witness Printer took 81.75 ms. Allocated memory is still 157.3 MB. Free memory was 107.1 MB in the beginning and 105.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:22,585 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 79.7 MB. Free memory was 59.5 MB in the beginning and 59.4 MB in the end (delta: 43.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 569.52 ms. Allocated memory is still 79.7 MB. Free memory was 58.6 MB in the beginning and 35.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.68 ms. Allocated memory is still 79.7 MB. Free memory was 35.1 MB in the beginning and 33.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.33 ms. Allocated memory is still 79.7 MB. Free memory was 33.1 MB in the beginning and 31.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 641.75 ms. Allocated memory is still 107.0 MB. Free memory was 85.3 MB in the beginning and 65.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4516.14 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 64.4 MB in the beginning and 107.1 MB in the end (delta: -42.7 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Witness Printer took 81.75 ms. Allocated memory is still 157.3 MB. Free memory was 107.1 MB in the beginning and 105.0 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 1035 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 97 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 3181 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: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 135 SDtfs, 121 SDslu, 165 SDs, 0 SdLazy, 97 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3193 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...