./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55b55e4b8436d76ce2d1f1eabde4e2f1ed0d3d45 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:32:13,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:32:13,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:32:13,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:32:13,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:32:13,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:32:13,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:32:13,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:32:13,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:32:13,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:32:13,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:32:13,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:32:13,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:32:13,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:32:13,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:32:13,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:32:13,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:32:13,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:32:13,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:32:13,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:32:13,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:32:13,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:32:13,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:32:13,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:32:13,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:32:13,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:32:13,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:32:13,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:32:13,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:32:13,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:32:13,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:32:13,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:32:13,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:32:13,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:32:13,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:32:13,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:32:13,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:32:13,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:32:13,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:32:13,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:32:13,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:32:13,291 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:32:13,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:32:13,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:32:13,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:32:13,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:32:13,359 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:32:13,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:32:13,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:32:13,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:32:13,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:32:13,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:32:13,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:32:13,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:32:13,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:32:13,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:32:13,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:32:13,363 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:32:13,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:32:13,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:32:13,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:32:13,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:32:13,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:32:13,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:32:13,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:32:13,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:32:13,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:32:13,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:32:13,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:32:13,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:32:13,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:32:13,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55b55e4b8436d76ce2d1f1eabde4e2f1ed0d3d45 [2020-10-26 00:32:13,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:32:13,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:32:13,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:32:13,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:32:13,787 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:32:13,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i [2020-10-26 00:32:13,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3baf572b3/35231ed01227423ca7c0f6c1c49e971c/FLAG9fb6963f3 [2020-10-26 00:32:14,626 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:32:14,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe024_tso.opt.i [2020-10-26 00:32:14,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3baf572b3/35231ed01227423ca7c0f6c1c49e971c/FLAG9fb6963f3 [2020-10-26 00:32:14,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3baf572b3/35231ed01227423ca7c0f6c1c49e971c [2020-10-26 00:32:14,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:32:14,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:32:14,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:32:14,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:32:14,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:32:14,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:32:14" (1/1) ... [2020-10-26 00:32:14,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d6793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:14, skipping insertion in model container [2020-10-26 00:32:14,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:32:14" (1/1) ... [2020-10-26 00:32:14,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:32:14,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:32:15,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:32:15,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:32:15,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:32:15,509 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:32:15,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15 WrapperNode [2020-10-26 00:32:15,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:32:15,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:32:15,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:32:15,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:32:15,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (1/1) ... [2020-10-26 00:32:15,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (1/1) ... [2020-10-26 00:32:15,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:32:15,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:32:15,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:32:15,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:32:15,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (1/1) ... [2020-10-26 00:32:15,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (1/1) ... [2020-10-26 00:32:15,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (1/1) ... [2020-10-26 00:32:15,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (1/1) ... [2020-10-26 00:32:15,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (1/1) ... [2020-10-26 00:32:15,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (1/1) ... [2020-10-26 00:32:15,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (1/1) ... [2020-10-26 00:32:15,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:32:15,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:32:15,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:32:15,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:32:15,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:32:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:32:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:32:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:32:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:32:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:32:15,675 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:32:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:32:15,676 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:32:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:32:15,676 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:32:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:32:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:32:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:32:15,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:32:15,678 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:32:16,143 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:32:16,143 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:32:16,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:32:16 BoogieIcfgContainer [2020-10-26 00:32:16,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:32:16,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:32:16,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:32:16,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:32:16,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:32:14" (1/3) ... [2020-10-26 00:32:16,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5735a4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:32:16, skipping insertion in model container [2020-10-26 00:32:16,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:15" (2/3) ... [2020-10-26 00:32:16,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5735a4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:32:16, skipping insertion in model container [2020-10-26 00:32:16,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:32:16" (3/3) ... [2020-10-26 00:32:16,156 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2020-10-26 00:32:16,169 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:32:16,169 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:32:16,175 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:32:16,176 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:32:16,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,207 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,207 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,208 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,209 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,209 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,210 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,210 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,211 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,211 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,214 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,220 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,223 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,223 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,224 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,224 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:16,226 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:32:16,241 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:32:16,269 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:32:16,269 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:32:16,269 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:32:16,269 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:32:16,269 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:32:16,269 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:32:16,269 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:32:16,270 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:32:16,283 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:32:16,286 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-10-26 00:32:16,290 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-10-26 00:32:16,292 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-10-26 00:32:16,342 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-26 00:32:16,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:32:16,348 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-26 00:32:16,351 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-26 00:32:17,681 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-26 00:32:18,568 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-26 00:32:18,861 INFO L131 LiptonReduction]: Checked pairs total: 3412 [2020-10-26 00:32:18,861 INFO L133 LiptonReduction]: Total number of compositions: 77 [2020-10-26 00:32:18,867 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-26 00:32:18,895 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-26 00:32:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-26 00:32:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:32:18,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:18,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:18,906 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:18,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:18,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1698580066, now seen corresponding path program 1 times [2020-10-26 00:32:18,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:18,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924269804] [2020-10-26 00:32:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:32:19,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924269804] [2020-10-26 00:32:19,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:19,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:32:19,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667530701] [2020-10-26 00:32:19,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:32:19,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:19,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:32:19,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:32:19,226 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-26 00:32:19,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:19,284 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-26 00:32:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:32:19,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-26 00:32:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:19,308 INFO L225 Difference]: With dead ends: 282 [2020-10-26 00:32:19,308 INFO L226 Difference]: Without dead ends: 218 [2020-10-26 00:32:19,309 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 [2020-10-26 00:32:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-26 00:32:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-26 00:32:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-26 00:32:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-26 00:32:19,381 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-26 00:32:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:19,382 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-26 00:32:19,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:32:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-26 00:32:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:32:19,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:19,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:19,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:32:19,387 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:19,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:19,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1116373545, now seen corresponding path program 1 times [2020-10-26 00:32:19,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:19,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345954639] [2020-10-26 00:32:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:32:19,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345954639] [2020-10-26 00:32:19,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:19,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:32:19,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981493104] [2020-10-26 00:32:19,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:32:19,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:19,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:32:19,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:32:19,531 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-26 00:32:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:19,574 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-26 00:32:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:32:19,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-26 00:32:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:19,577 INFO L225 Difference]: With dead ends: 242 [2020-10-26 00:32:19,577 INFO L226 Difference]: Without dead ends: 146 [2020-10-26 00:32:19,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:32:19,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-26 00:32:19,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-26 00:32:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-26 00:32:19,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-26 00:32:19,593 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-26 00:32:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:19,593 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-26 00:32:19,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:32:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-26 00:32:19,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:32:19,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:19,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:19,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:32:19,596 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:19,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:19,597 INFO L82 PathProgramCache]: Analyzing trace with hash -906978528, now seen corresponding path program 1 times [2020-10-26 00:32:19,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:19,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492962022] [2020-10-26 00:32:19,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:32:19,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492962022] [2020-10-26 00:32:19,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:19,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:32:19,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307254702] [2020-10-26 00:32:19,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:32:19,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:19,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:32:19,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:32:19,727 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-10-26 00:32:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:19,771 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-10-26 00:32:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:32:19,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 00:32:19,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:19,774 INFO L225 Difference]: With dead ends: 165 [2020-10-26 00:32:19,774 INFO L226 Difference]: Without dead ends: 125 [2020-10-26 00:32:19,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:32:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-26 00:32:19,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-26 00:32:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-26 00:32:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-10-26 00:32:19,787 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-10-26 00:32:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:19,788 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-10-26 00:32:19,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:32:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-10-26 00:32:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:32:19,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:19,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:19,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:32:19,791 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:19,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:19,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1053183531, now seen corresponding path program 1 times [2020-10-26 00:32:19,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:19,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697920187] [2020-10-26 00:32:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:32:19,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697920187] [2020-10-26 00:32:19,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:19,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:32:19,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712275584] [2020-10-26 00:32:19,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:32:19,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:19,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:32:19,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:32:19,878 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 5 states. [2020-10-26 00:32:19,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:19,954 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-10-26 00:32:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:32:19,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-26 00:32:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:19,957 INFO L225 Difference]: With dead ends: 122 [2020-10-26 00:32:19,957 INFO L226 Difference]: Without dead ends: 97 [2020-10-26 00:32:19,960 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 [2020-10-26 00:32:19,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-26 00:32:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-26 00:32:19,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-26 00:32:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-26 00:32:19,975 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-10-26 00:32:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:19,976 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-26 00:32:19,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:32:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-26 00:32:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:32:19,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:19,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:19,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:32:19,979 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:19,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:19,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1529886427, now seen corresponding path program 1 times [2020-10-26 00:32:19,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:19,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063555213] [2020-10-26 00:32:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:32:20,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063555213] [2020-10-26 00:32:20,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:20,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:32:20,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974228997] [2020-10-26 00:32:20,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:32:20,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:20,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:32:20,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:32:20,073 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 6 states. [2020-10-26 00:32:20,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:20,143 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-10-26 00:32:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:32:20,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-26 00:32:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:20,145 INFO L225 Difference]: With dead ends: 92 [2020-10-26 00:32:20,145 INFO L226 Difference]: Without dead ends: 84 [2020-10-26 00:32:20,146 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 [2020-10-26 00:32:20,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-26 00:32:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-26 00:32:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-26 00:32:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-10-26 00:32:20,152 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-10-26 00:32:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:20,152 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-10-26 00:32:20,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:32:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-10-26 00:32:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:32:20,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:20,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:20,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:32:20,155 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:20,155 INFO L82 PathProgramCache]: Analyzing trace with hash 212367058, now seen corresponding path program 1 times [2020-10-26 00:32:20,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:20,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590675242] [2020-10-26 00:32:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:32:20,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590675242] [2020-10-26 00:32:20,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:20,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:32:20,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354469373] [2020-10-26 00:32:20,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:32:20,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:20,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:32:20,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:32:20,218 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-10-26 00:32:20,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:20,234 INFO L93 Difference]: Finished difference Result 97 states and 197 transitions. [2020-10-26 00:32:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:32:20,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 00:32:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:20,235 INFO L225 Difference]: With dead ends: 97 [2020-10-26 00:32:20,235 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 00:32:20,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:32:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 00:32:20,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-26 00:32:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 00:32:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-26 00:32:20,239 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2020-10-26 00:32:20,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:20,239 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-26 00:32:20,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:32:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-26 00:32:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:32:20,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:20,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:20,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:32:20,241 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash 671694040, now seen corresponding path program 2 times [2020-10-26 00:32:20,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:20,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44761559] [2020-10-26 00:32:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:32:20,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44761559] [2020-10-26 00:32:20,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:20,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:32:20,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880308596] [2020-10-26 00:32:20,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:32:20,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:20,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:32:20,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:32:20,292 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-26 00:32:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:20,305 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-26 00:32:20,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:32:20,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 00:32:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:20,306 INFO L225 Difference]: With dead ends: 35 [2020-10-26 00:32:20,306 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:32:20,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:32:20,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:32:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:32:20,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:32:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:32:20,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-26 00:32:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:20,308 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:32:20,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:32:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:32:20,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:32:20,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:32:20,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:32:20 BasicIcfg [2020-10-26 00:32:20,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:32:20,314 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:32:20,314 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:32:20,314 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:32:20,315 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:32:16" (3/4) ... [2020-10-26 00:32:20,319 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:32:20,328 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:32:20,328 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:32:20,328 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:32:20,334 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:32:20,335 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:32:20,335 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:32:20,336 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:32:20,392 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:32:20,394 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:32:20,399 INFO L168 Benchmark]: Toolchain (without parser) took 5562.51 ms. Allocated memory was 44.0 MB in the beginning and 100.7 MB in the end (delta: 56.6 MB). Free memory was 27.8 MB in the beginning and 53.3 MB in the end (delta: -25.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:20,400 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 35.7 MB. Free memory was 22.5 MB in the beginning and 22.5 MB in the end (delta: 17.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:32:20,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.91 ms. Allocated memory is still 44.0 MB. Free memory was 27.1 MB in the beginning and 26.4 MB in the end (delta: 670.6 kB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:20,405 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.00 ms. Allocated memory is still 44.0 MB. Free memory was 26.4 MB in the beginning and 24.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:20,406 INFO L168 Benchmark]: Boogie Preprocessor took 28.88 ms. Allocated memory is still 44.0 MB. Free memory was 24.5 MB in the beginning and 23.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:32:20,407 INFO L168 Benchmark]: RCFGBuilder took 553.31 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 23.2 MB in the beginning and 37.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:20,408 INFO L168 Benchmark]: TraceAbstraction took 4165.23 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 37.3 MB in the beginning and 55.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:20,408 INFO L168 Benchmark]: Witness Printer took 80.49 ms. Allocated memory is still 100.7 MB. Free memory was 55.4 MB in the beginning and 53.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:20,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 35.7 MB. Free memory was 22.5 MB in the beginning and 22.5 MB in the end (delta: 17.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 669.91 ms. Allocated memory is still 44.0 MB. Free memory was 27.1 MB in the beginning and 26.4 MB in the end (delta: 670.6 kB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.00 ms. Allocated memory is still 44.0 MB. Free memory was 26.4 MB in the beginning and 24.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.88 ms. Allocated memory is still 44.0 MB. Free memory was 24.5 MB in the beginning and 23.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 553.31 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 23.2 MB in the beginning and 37.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4165.23 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 37.3 MB in the beginning and 55.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * Witness Printer took 80.49 ms. Allocated memory is still 100.7 MB. Free memory was 55.4 MB in the beginning and 53.3 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 1073 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 105 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 77 TotalNumberOfCompositions, 3412 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 136 SDtfs, 132 SDslu, 188 SDs, 0 SdLazy, 96 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 3089 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...