./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport.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_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/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 78dd3e229728265c0b15a8284c5b0b9fe0d28799 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:14:02,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:02,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:02,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:02,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:02,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:02,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:02,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:02,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:02,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:02,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:02,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:02,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:02,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:02,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:02,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:02,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:02,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:02,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:02,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:02,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:02,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:02,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:02,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:02,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:02,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:02,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:02,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:02,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:02,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:02,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:02,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:02,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:02,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:02,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:02,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:02,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:02,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:02,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:02,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:02,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:02,311 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:14:02,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:02,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:02,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:02,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:02,372 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:02,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:02,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:02,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:14:02,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:02,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:02,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:14:02,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:02,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:14:02,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:02,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:02,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:02,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:14:02,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:02,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:02,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:02,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:02,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:02,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:02,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:02,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:14:02,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:14:02,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:14:02,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:14:02,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:02,380 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_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78dd3e229728265c0b15a8284c5b0b9fe0d28799 [2020-11-30 00:14:02,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:02,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:02,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:02,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:02,758 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:02,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/../../sv-benchmarks/c/pthread-atomic/lamport.i [2020-11-30 00:14:02,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/data/d8495488b/aa565f6db5614e25bd054aff52cc5bbf/FLAG2de0b0749 [2020-11-30 00:14:03,612 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:03,618 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/sv-benchmarks/c/pthread-atomic/lamport.i [2020-11-30 00:14:03,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/data/d8495488b/aa565f6db5614e25bd054aff52cc5bbf/FLAG2de0b0749 [2020-11-30 00:14:03,813 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/data/d8495488b/aa565f6db5614e25bd054aff52cc5bbf [2020-11-30 00:14:03,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:03,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:03,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:03,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:03,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:03,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:03" (1/1) ... [2020-11-30 00:14:03,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca6879a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:03, skipping insertion in model container [2020-11-30 00:14:03,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:03" (1/1) ... [2020-11-30 00:14:03,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:03,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:04,188 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-30 00:14:04,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:04,486 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:04,518 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-30 00:14:04,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:04,688 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:04,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04 WrapperNode [2020-11-30 00:14:04,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:04,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:04,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:04,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:04,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (1/1) ... [2020-11-30 00:14:04,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (1/1) ... [2020-11-30 00:14:04,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:04,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:04,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:04,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:04,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (1/1) ... [2020-11-30 00:14:04,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (1/1) ... [2020-11-30 00:14:04,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (1/1) ... [2020-11-30 00:14:04,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (1/1) ... [2020-11-30 00:14:04,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (1/1) ... [2020-11-30 00:14:04,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (1/1) ... [2020-11-30 00:14:04,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (1/1) ... [2020-11-30 00:14:04,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:04,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:04,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:04,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:04,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/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 [2020-11-30 00:14:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:14:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-11-30 00:14:04,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-11-30 00:14:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-30 00:14:04,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-30 00:14:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:14:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-30 00:14:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:14:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:14:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-30 00:14:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:04,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:14:04,878 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 00:14:05,520 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:14:05,520 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 00:14:05,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:05 BoogieIcfgContainer [2020-11-30 00:14:05,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:14:05,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:14:05,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:14:05,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:14:05,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:03" (1/3) ... [2020-11-30 00:14:05,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0aa8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:05, skipping insertion in model container [2020-11-30 00:14:05,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:04" (2/3) ... [2020-11-30 00:14:05,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0aa8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:05, skipping insertion in model container [2020-11-30 00:14:05,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:05" (3/3) ... [2020-11-30 00:14:05,536 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-11-30 00:14:05,550 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 00:14:05,551 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:14:05,557 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:14:05,558 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 00:14:05,590 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,591 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,591 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,591 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,592 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,592 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,598 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,598 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,598 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,598 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,601 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,611 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,611 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,611 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,612 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,612 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,615 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,623 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,623 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,624 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,624 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,625 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:14:05,636 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-30 00:14:05,649 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 00:14:05,676 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:14:05,677 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:14:05,677 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:14:05,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:14:05,677 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:14:05,677 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:14:05,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:14:05,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:14:05,694 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 00:14:05,697 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 133 transitions, 288 flow [2020-11-30 00:14:05,701 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 133 transitions, 288 flow [2020-11-30 00:14:05,703 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 112 places, 133 transitions, 288 flow [2020-11-30 00:14:05,767 INFO L129 PetriNetUnfolder]: 27/133 cut-off events. [2020-11-30 00:14:05,767 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-30 00:14:05,779 INFO L80 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 133 events. 27/133 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 324 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 105. Up to 5 conditions per place. [2020-11-30 00:14:05,788 INFO L116 LiptonReduction]: Number of co-enabled transitions 5640 [2020-11-30 00:14:07,725 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-30 00:14:08,430 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-11-30 00:14:08,565 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-30 00:14:08,596 INFO L131 LiptonReduction]: Checked pairs total: 15865 [2020-11-30 00:14:08,596 INFO L133 LiptonReduction]: Total number of compositions: 92 [2020-11-30 00:14:08,602 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 69 transitions, 160 flow [2020-11-30 00:14:08,676 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 879 states. [2020-11-30 00:14:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states. [2020-11-30 00:14:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 00:14:08,684 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:08,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 00:14:08,685 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:08,692 INFO L82 PathProgramCache]: Analyzing trace with hash 18098443, now seen corresponding path program 1 times [2020-11-30 00:14:08,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:08,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631737390] [2020-11-30 00:14:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:08,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631737390] [2020-11-30 00:14:08,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:08,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:14:08,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973322980] [2020-11-30 00:14:08,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:14:08,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:08,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:14:08,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:14:08,979 INFO L87 Difference]: Start difference. First operand 879 states. Second operand 2 states. [2020-11-30 00:14:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:09,066 INFO L93 Difference]: Finished difference Result 879 states and 2535 transitions. [2020-11-30 00:14:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:14:09,067 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-11-30 00:14:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:09,108 INFO L225 Difference]: With dead ends: 879 [2020-11-30 00:14:09,109 INFO L226 Difference]: Without dead ends: 840 [2020-11-30 00:14:09,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:14:09,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-11-30 00:14:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2020-11-30 00:14:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-11-30 00:14:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 2450 transitions. [2020-11-30 00:14:09,300 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 2450 transitions. Word has length 4 [2020-11-30 00:14:09,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:09,300 INFO L481 AbstractCegarLoop]: Abstraction has 840 states and 2450 transitions. [2020-11-30 00:14:09,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:14:09,301 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 2450 transitions. [2020-11-30 00:14:09,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:14:09,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:09,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:09,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:14:09,305 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:09,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1270916706, now seen corresponding path program 1 times [2020-11-30 00:14:09,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:09,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901855020] [2020-11-30 00:14:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:09,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901855020] [2020-11-30 00:14:09,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:09,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:14:09,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499399028] [2020-11-30 00:14:09,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:09,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:09,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:09,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:09,418 INFO L87 Difference]: Start difference. First operand 840 states and 2450 transitions. Second operand 3 states. [2020-11-30 00:14:09,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:09,488 INFO L93 Difference]: Finished difference Result 841 states and 2411 transitions. [2020-11-30 00:14:09,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:09,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-30 00:14:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:09,499 INFO L225 Difference]: With dead ends: 841 [2020-11-30 00:14:09,499 INFO L226 Difference]: Without dead ends: 706 [2020-11-30 00:14:09,501 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 [2020-11-30 00:14:09,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-11-30 00:14:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 688. [2020-11-30 00:14:09,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-11-30 00:14:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 2024 transitions. [2020-11-30 00:14:09,542 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 2024 transitions. Word has length 10 [2020-11-30 00:14:09,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:09,543 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 2024 transitions. [2020-11-30 00:14:09,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:09,543 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 2024 transitions. [2020-11-30 00:14:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:14:09,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:09,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:09,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:14:09,548 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:09,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:09,549 INFO L82 PathProgramCache]: Analyzing trace with hash -890786191, now seen corresponding path program 1 times [2020-11-30 00:14:09,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:09,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422519266] [2020-11-30 00:14:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:09,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422519266] [2020-11-30 00:14:09,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:09,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:14:09,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868230093] [2020-11-30 00:14:09,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:09,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:09,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:09,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:09,669 INFO L87 Difference]: Start difference. First operand 688 states and 2024 transitions. Second operand 3 states. [2020-11-30 00:14:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:09,717 INFO L93 Difference]: Finished difference Result 665 states and 1940 transitions. [2020-11-30 00:14:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:09,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-30 00:14:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:09,724 INFO L225 Difference]: With dead ends: 665 [2020-11-30 00:14:09,725 INFO L226 Difference]: Without dead ends: 524 [2020-11-30 00:14:09,725 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 [2020-11-30 00:14:09,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-11-30 00:14:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2020-11-30 00:14:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-11-30 00:14:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1570 transitions. [2020-11-30 00:14:09,778 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1570 transitions. Word has length 11 [2020-11-30 00:14:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:09,779 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 1570 transitions. [2020-11-30 00:14:09,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:09,780 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1570 transitions. [2020-11-30 00:14:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:14:09,795 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:09,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:09,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:14:09,797 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:09,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1786836014, now seen corresponding path program 1 times [2020-11-30 00:14:09,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:09,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887099158] [2020-11-30 00:14:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:09,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887099158] [2020-11-30 00:14:09,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:09,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:14:09,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32092344] [2020-11-30 00:14:09,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:14:09,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:09,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:14:09,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:14:09,933 INFO L87 Difference]: Start difference. First operand 524 states and 1570 transitions. Second operand 4 states. [2020-11-30 00:14:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:10,158 INFO L93 Difference]: Finished difference Result 1056 states and 3176 transitions. [2020-11-30 00:14:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:14:10,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 00:14:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:10,166 INFO L225 Difference]: With dead ends: 1056 [2020-11-30 00:14:10,166 INFO L226 Difference]: Without dead ends: 572 [2020-11-30 00:14:10,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:10,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-11-30 00:14:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 554. [2020-11-30 00:14:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-11-30 00:14:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1650 transitions. [2020-11-30 00:14:10,197 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1650 transitions. Word has length 18 [2020-11-30 00:14:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:10,197 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 1650 transitions. [2020-11-30 00:14:10,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:14:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1650 transitions. [2020-11-30 00:14:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:14:10,200 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:10,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:10,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:14:10,200 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:10,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:10,201 INFO L82 PathProgramCache]: Analyzing trace with hash 395464812, now seen corresponding path program 2 times [2020-11-30 00:14:10,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:10,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358812620] [2020-11-30 00:14:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:10,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358812620] [2020-11-30 00:14:10,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:10,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:14:10,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954813646] [2020-11-30 00:14:10,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:14:10,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:10,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:14:10,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:14:10,274 INFO L87 Difference]: Start difference. First operand 554 states and 1650 transitions. Second operand 4 states. [2020-11-30 00:14:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:10,368 INFO L93 Difference]: Finished difference Result 1650 states and 4884 transitions. [2020-11-30 00:14:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:14:10,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 00:14:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:10,387 INFO L225 Difference]: With dead ends: 1650 [2020-11-30 00:14:10,387 INFO L226 Difference]: Without dead ends: 1650 [2020-11-30 00:14:10,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2020-11-30 00:14:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 652. [2020-11-30 00:14:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-11-30 00:14:10,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1929 transitions. [2020-11-30 00:14:10,477 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1929 transitions. Word has length 18 [2020-11-30 00:14:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:10,477 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 1929 transitions. [2020-11-30 00:14:10,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:14:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1929 transitions. [2020-11-30 00:14:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:14:10,480 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:10,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:10,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:14:10,480 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:10,481 INFO L82 PathProgramCache]: Analyzing trace with hash -882163476, now seen corresponding path program 3 times [2020-11-30 00:14:10,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:10,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092005407] [2020-11-30 00:14:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:10,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092005407] [2020-11-30 00:14:10,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:10,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:14:10,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104427696] [2020-11-30 00:14:10,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:10,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:10,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:10,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:10,562 INFO L87 Difference]: Start difference. First operand 652 states and 1929 transitions. Second operand 3 states. [2020-11-30 00:14:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:10,594 INFO L93 Difference]: Finished difference Result 1006 states and 2918 transitions. [2020-11-30 00:14:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:10,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-30 00:14:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:10,605 INFO L225 Difference]: With dead ends: 1006 [2020-11-30 00:14:10,605 INFO L226 Difference]: Without dead ends: 1006 [2020-11-30 00:14:10,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-11-30 00:14:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 686. [2020-11-30 00:14:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-11-30 00:14:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2016 transitions. [2020-11-30 00:14:10,644 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2016 transitions. Word has length 18 [2020-11-30 00:14:10,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:10,645 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 2016 transitions. [2020-11-30 00:14:10,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2016 transitions. [2020-11-30 00:14:10,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:14:10,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:10,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:10,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:14:10,647 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1835455792, now seen corresponding path program 1 times [2020-11-30 00:14:10,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:10,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463041105] [2020-11-30 00:14:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:10,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463041105] [2020-11-30 00:14:10,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:10,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:14:10,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526042952] [2020-11-30 00:14:10,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:10,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:10,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:10,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:10,692 INFO L87 Difference]: Start difference. First operand 686 states and 2016 transitions. Second operand 3 states. [2020-11-30 00:14:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:10,751 INFO L93 Difference]: Finished difference Result 818 states and 2370 transitions. [2020-11-30 00:14:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:10,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-30 00:14:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:10,756 INFO L225 Difference]: With dead ends: 818 [2020-11-30 00:14:10,756 INFO L226 Difference]: Without dead ends: 536 [2020-11-30 00:14:10,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-11-30 00:14:10,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 462. [2020-11-30 00:14:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-11-30 00:14:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1260 transitions. [2020-11-30 00:14:10,776 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1260 transitions. Word has length 18 [2020-11-30 00:14:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:10,776 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 1260 transitions. [2020-11-30 00:14:10,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1260 transitions. [2020-11-30 00:14:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:14:10,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:10,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:10,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:14:10,778 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:10,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1818565130, now seen corresponding path program 1 times [2020-11-30 00:14:10,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:10,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502089686] [2020-11-30 00:14:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:10,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502089686] [2020-11-30 00:14:10,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:10,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:14:10,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167596446] [2020-11-30 00:14:10,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:14:10,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:10,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:14:10,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:14:10,814 INFO L87 Difference]: Start difference. First operand 462 states and 1260 transitions. Second operand 4 states. [2020-11-30 00:14:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:10,864 INFO L93 Difference]: Finished difference Result 534 states and 1408 transitions. [2020-11-30 00:14:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:14:10,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-30 00:14:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:10,870 INFO L225 Difference]: With dead ends: 534 [2020-11-30 00:14:10,870 INFO L226 Difference]: Without dead ends: 514 [2020-11-30 00:14:10,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:10,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-11-30 00:14:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 474. [2020-11-30 00:14:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-11-30 00:14:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1268 transitions. [2020-11-30 00:14:10,894 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 1268 transitions. Word has length 21 [2020-11-30 00:14:10,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:10,894 INFO L481 AbstractCegarLoop]: Abstraction has 474 states and 1268 transitions. [2020-11-30 00:14:10,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:14:10,894 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1268 transitions. [2020-11-30 00:14:10,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:14:10,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:10,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:10,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:14:10,897 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash -865494114, now seen corresponding path program 1 times [2020-11-30 00:14:10,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:10,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384057118] [2020-11-30 00:14:10,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:10,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384057118] [2020-11-30 00:14:10,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:10,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:14:10,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701682926] [2020-11-30 00:14:10,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:14:10,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:10,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:14:10,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:14:10,991 INFO L87 Difference]: Start difference. First operand 474 states and 1268 transitions. Second operand 4 states. [2020-11-30 00:14:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:11,038 INFO L93 Difference]: Finished difference Result 396 states and 1013 transitions. [2020-11-30 00:14:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:14:11,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-30 00:14:11,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:11,043 INFO L225 Difference]: With dead ends: 396 [2020-11-30 00:14:11,043 INFO L226 Difference]: Without dead ends: 370 [2020-11-30 00:14:11,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:11,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-11-30 00:14:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 342. [2020-11-30 00:14:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-11-30 00:14:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 888 transitions. [2020-11-30 00:14:11,059 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 888 transitions. Word has length 22 [2020-11-30 00:14:11,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:11,061 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 888 transitions. [2020-11-30 00:14:11,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:14:11,061 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 888 transitions. [2020-11-30 00:14:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:14:11,063 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:11,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:11,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:14:11,063 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:11,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1091650042, now seen corresponding path program 1 times [2020-11-30 00:14:11,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:11,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269861538] [2020-11-30 00:14:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:11,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269861538] [2020-11-30 00:14:11,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:11,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:14:11,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035856380] [2020-11-30 00:14:11,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:14:11,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:11,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:14:11,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:14:11,127 INFO L87 Difference]: Start difference. First operand 342 states and 888 transitions. Second operand 4 states. [2020-11-30 00:14:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:11,177 INFO L93 Difference]: Finished difference Result 520 states and 1309 transitions. [2020-11-30 00:14:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:14:11,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-30 00:14:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:11,182 INFO L225 Difference]: With dead ends: 520 [2020-11-30 00:14:11,183 INFO L226 Difference]: Without dead ends: 460 [2020-11-30 00:14:11,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-11-30 00:14:11,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 322. [2020-11-30 00:14:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-11-30 00:14:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 825 transitions. [2020-11-30 00:14:11,203 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 825 transitions. Word has length 25 [2020-11-30 00:14:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:11,204 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 825 transitions. [2020-11-30 00:14:11,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:14:11,204 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 825 transitions. [2020-11-30 00:14:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:14:11,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:11,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:11,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:14:11,206 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:11,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:11,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1833026170, now seen corresponding path program 2 times [2020-11-30 00:14:11,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:11,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871429511] [2020-11-30 00:14:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:11,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871429511] [2020-11-30 00:14:11,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:11,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:14:11,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673922972] [2020-11-30 00:14:11,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:14:11,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:11,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:14:11,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:14:11,250 INFO L87 Difference]: Start difference. First operand 322 states and 825 transitions. Second operand 4 states. [2020-11-30 00:14:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:11,279 INFO L93 Difference]: Finished difference Result 218 states and 577 transitions. [2020-11-30 00:14:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:14:11,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-30 00:14:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:11,280 INFO L225 Difference]: With dead ends: 218 [2020-11-30 00:14:11,280 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:14:11,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:14:11,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:14:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:14:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:14:11,281 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-11-30 00:14:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:11,281 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:14:11,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:14:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:14:11,281 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:14:11,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 00:14:11,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:14:11 BasicIcfg [2020-11-30 00:14:11,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:14:11,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:14:11,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:14:11,288 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:14:11,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:05" (3/4) ... [2020-11-30 00:14:11,295 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:14:11,303 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-11-30 00:14:11,303 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-11-30 00:14:11,308 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-30 00:14:11,309 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:14:11,309 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:14:11,309 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:14:11,363 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_58ed6c52-4060-41c3-8f27-8b0a0ba8e084/bin/uautomizer/witness.graphml [2020-11-30 00:14:11,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:14:11,365 INFO L168 Benchmark]: Toolchain (without parser) took 7546.24 ms. Allocated memory was 75.5 MB in the beginning and 136.3 MB in the end (delta: 60.8 MB). Free memory was 41.2 MB in the beginning and 68.1 MB in the end (delta: -27.0 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:11,366 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 55.0 MB in the beginning and 55.0 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:11,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 864.30 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 40.9 MB in the beginning and 48.4 MB in the end (delta: -7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:11,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.19 ms. Allocated memory is still 92.3 MB. Free memory was 48.4 MB in the beginning and 46.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:11,368 INFO L168 Benchmark]: Boogie Preprocessor took 32.28 ms. Allocated memory is still 92.3 MB. Free memory was 46.3 MB in the beginning and 44.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:11,369 INFO L168 Benchmark]: RCFGBuilder took 745.07 ms. Allocated memory is still 92.3 MB. Free memory was 44.9 MB in the beginning and 49.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:11,370 INFO L168 Benchmark]: TraceAbstraction took 5758.38 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 49.5 MB in the beginning and 70.2 MB in the end (delta: -20.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:11,370 INFO L168 Benchmark]: Witness Printer took 75.90 ms. Allocated memory is still 136.3 MB. Free memory was 70.2 MB in the beginning and 68.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:11,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 55.0 MB in the beginning and 55.0 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 864.30 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 40.9 MB in the beginning and 48.4 MB in the end (delta: -7.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.19 ms. Allocated memory is still 92.3 MB. Free memory was 48.4 MB in the beginning and 46.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.28 ms. Allocated memory is still 92.3 MB. Free memory was 46.3 MB in the beginning and 44.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 745.07 ms. Allocated memory is still 92.3 MB. Free memory was 44.9 MB in the beginning and 49.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5758.38 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 49.5 MB in the beginning and 70.2 MB in the end (delta: -20.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. * Witness Printer took 75.90 ms. Allocated memory is still 136.3 MB. Free memory was 70.2 MB in the beginning and 68.1 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 3572 VarBasedMoverChecksPositive, 148 VarBasedMoverChecksNegative, 80 SemBasedMoverChecksPositive, 68 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 826 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 112 PlacesBefore, 56 PlacesAfterwards, 133 TransitionsBefore, 69 TransitionsAfterwards, 5640 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 8 ChoiceCompositions, 92 TotalNumberOfCompositions, 15865 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 106 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 861 SDtfs, 496 SDslu, 795 SDs, 0 SdLazy, 196 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=879occurred 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: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 1634 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 5551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...