./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/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 32935a3786295b4ca9a51ffc083c82e75ec24a5d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:30:56,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:30:56,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:30:56,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:30:56,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:30:56,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:30:56,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:30:56,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:30:56,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:30:56,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:30:56,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:30:56,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:30:56,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:30:56,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:30:56,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:30:56,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:30:56,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:30:56,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:30:56,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:30:56,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:30:56,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:30:56,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:30:56,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:30:56,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:30:56,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:30:56,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:30:56,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:30:56,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:30:56,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:30:56,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:30:56,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:30:56,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:30:56,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:30:56,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:30:56,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:30:56,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:30:56,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:30:56,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:30:56,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:30:56,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:30:56,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:30:56,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:30:56,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:30:56,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:30:56,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:30:56,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:30:56,382 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:30:56,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:30:56,383 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:30:56,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:30:56,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:30:56,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:30:56,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:30:56,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:30:56,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:30:56,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:30:56,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:30:56,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:30:56,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:30:56,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:30:56,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:30:56,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:30:56,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:30:56,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:30:56,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:30:56,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:30:56,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:30:56,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:30:56,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:30:56,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:30:56,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:30:56,390 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_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32935a3786295b4ca9a51ffc083c82e75ec24a5d [2020-12-01 15:30:56,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:30:56,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:30:56,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:30:56,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:30:56,817 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:30:56,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i [2020-12-01 15:30:56,898 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/data/6b88d7a1b/15272ead1b0a425993476c2b7fa18253/FLAG851e959b2 [2020-12-01 15:30:57,515 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:30:57,517 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/sv-benchmarks/c/pthread-wmm/safe035_tso.opt.i [2020-12-01 15:30:57,546 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/data/6b88d7a1b/15272ead1b0a425993476c2b7fa18253/FLAG851e959b2 [2020-12-01 15:30:57,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/data/6b88d7a1b/15272ead1b0a425993476c2b7fa18253 [2020-12-01 15:30:57,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:30:57,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:30:57,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:30:57,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:30:57,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:30:57,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:30:57" (1/1) ... [2020-12-01 15:30:57,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79000ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:57, skipping insertion in model container [2020-12-01 15:30:57,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:30:57" (1/1) ... [2020-12-01 15:30:57,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:30:57,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:30:58,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:30:58,522 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:30:58,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:30:58,716 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:30:58,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58 WrapperNode [2020-12-01 15:30:58,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:30:58,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:30:58,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:30:58,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:30:58,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (1/1) ... [2020-12-01 15:30:58,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (1/1) ... [2020-12-01 15:30:58,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:30:58,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:30:58,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:30:58,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:30:58,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (1/1) ... [2020-12-01 15:30:58,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (1/1) ... [2020-12-01 15:30:58,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (1/1) ... [2020-12-01 15:30:58,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (1/1) ... [2020-12-01 15:30:58,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (1/1) ... [2020-12-01 15:30:58,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (1/1) ... [2020-12-01 15:30:58,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (1/1) ... [2020-12-01 15:30:58,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:30:58,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:30:58,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:30:58,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:30:58,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/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 [2020-12-01 15:30:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:30:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:30:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:30:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:30:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:30:58,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:30:58,912 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:30:58,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:30:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:30:58,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:30:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:30:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:30:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:30:58,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:30:58,915 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 15:30:59,307 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:30:59,308 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:30:59,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:30:59 BoogieIcfgContainer [2020-12-01 15:30:59,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:30:59,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:30:59,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:30:59,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:30:59,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:30:57" (1/3) ... [2020-12-01 15:30:59,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a17845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:30:59, skipping insertion in model container [2020-12-01 15:30:59,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:58" (2/3) ... [2020-12-01 15:30:59,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a17845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:30:59, skipping insertion in model container [2020-12-01 15:30:59,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:30:59" (3/3) ... [2020-12-01 15:30:59,322 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-12-01 15:30:59,341 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:30:59,342 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:30:59,345 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:30:59,347 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:30:59,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,386 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,387 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,388 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,388 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,392 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,400 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,401 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,401 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,404 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,405 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,406 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,406 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,411 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,424 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,425 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,425 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,430 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,431 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,434 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,435 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,435 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,435 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:30:59,451 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:30:59,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 15:30:59,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:30:59,514 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:30:59,514 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:30:59,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:30:59,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:30:59,515 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:30:59,515 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:30:59,515 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:30:59,535 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:30:59,538 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 15:30:59,542 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 15:30:59,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-12-01 15:30:59,626 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-12-01 15:30:59,627 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:30:59,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-12-01 15:30:59,636 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-12-01 15:31:02,736 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-01 15:31:02,916 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-01 15:31:04,030 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-01 15:31:04,138 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-01 15:31:04,410 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-01 15:31:04,678 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-01 15:31:04,786 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-01 15:31:05,025 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-01 15:31:05,031 INFO L131 LiptonReduction]: Checked pairs total: 2778 [2020-12-01 15:31:05,032 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-12-01 15:31:05,039 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-01 15:31:05,074 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-01 15:31:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-01 15:31:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:31:05,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:05,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:05,087 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:05,095 INFO L82 PathProgramCache]: Analyzing trace with hash -345538935, now seen corresponding path program 1 times [2020-12-01 15:31:05,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:05,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107777861] [2020-12-01 15:31:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:05,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107777861] [2020-12-01 15:31:05,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:05,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:31:05,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926533465] [2020-12-01 15:31:05,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:31:05,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:05,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:31:05,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:31:05,415 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-01 15:31:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:05,463 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-01 15:31:05,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:31:05,465 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-01 15:31:05,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:05,492 INFO L225 Difference]: With dead ends: 362 [2020-12-01 15:31:05,492 INFO L226 Difference]: Without dead ends: 298 [2020-12-01 15:31:05,508 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 [2020-12-01 15:31:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-01 15:31:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-01 15:31:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-01 15:31:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-01 15:31:05,607 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-01 15:31:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:05,608 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-01 15:31:05,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:31:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-01 15:31:05,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:31:05,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:05,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:05,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:31:05,612 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:05,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:05,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2121797576, now seen corresponding path program 1 times [2020-12-01 15:31:05,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:05,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291757301] [2020-12-01 15:31:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:05,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291757301] [2020-12-01 15:31:05,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:05,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:31:05,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366444380] [2020-12-01 15:31:05,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:31:05,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:05,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:31:05,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:31:05,742 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-01 15:31:05,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:05,804 INFO L93 Difference]: Finished difference Result 298 states and 816 transitions. [2020-12-01 15:31:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:31:05,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-01 15:31:05,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:05,812 INFO L225 Difference]: With dead ends: 298 [2020-12-01 15:31:05,814 INFO L226 Difference]: Without dead ends: 234 [2020-12-01 15:31:05,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:31:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-12-01 15:31:05,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-12-01 15:31:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-12-01 15:31:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 640 transitions. [2020-12-01 15:31:05,869 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 640 transitions. Word has length 9 [2020-12-01 15:31:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:05,870 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 640 transitions. [2020-12-01 15:31:05,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:31:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 640 transitions. [2020-12-01 15:31:05,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:31:05,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:05,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:05,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:31:05,878 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:05,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1060758680, now seen corresponding path program 1 times [2020-12-01 15:31:05,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:05,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917532807] [2020-12-01 15:31:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:05,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917532807] [2020-12-01 15:31:05,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:05,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:31:05,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573866483] [2020-12-01 15:31:05,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:31:05,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:05,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:31:05,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:31:05,959 INFO L87 Difference]: Start difference. First operand 234 states and 640 transitions. Second operand 4 states. [2020-12-01 15:31:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:05,998 INFO L93 Difference]: Finished difference Result 346 states and 916 transitions. [2020-12-01 15:31:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:31:05,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 15:31:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:06,002 INFO L225 Difference]: With dead ends: 346 [2020-12-01 15:31:06,003 INFO L226 Difference]: Without dead ends: 164 [2020-12-01 15:31:06,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:31:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-12-01 15:31:06,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-12-01 15:31:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-01 15:31:06,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 432 transitions. [2020-12-01 15:31:06,025 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 432 transitions. Word has length 11 [2020-12-01 15:31:06,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:06,025 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 432 transitions. [2020-12-01 15:31:06,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:31:06,026 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 432 transitions. [2020-12-01 15:31:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:31:06,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:06,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:06,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:31:06,028 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:06,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:06,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1476250237, now seen corresponding path program 1 times [2020-12-01 15:31:06,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:06,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834462935] [2020-12-01 15:31:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:06,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834462935] [2020-12-01 15:31:06,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:06,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:31:06,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799903937] [2020-12-01 15:31:06,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:31:06,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:06,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:31:06,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:31:06,200 INFO L87 Difference]: Start difference. First operand 164 states and 432 transitions. Second operand 4 states. [2020-12-01 15:31:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:06,236 INFO L93 Difference]: Finished difference Result 183 states and 435 transitions. [2020-12-01 15:31:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:31:06,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 15:31:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:06,240 INFO L225 Difference]: With dead ends: 183 [2020-12-01 15:31:06,240 INFO L226 Difference]: Without dead ends: 131 [2020-12-01 15:31:06,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:31:06,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-01 15:31:06,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-12-01 15:31:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-01 15:31:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 303 transitions. [2020-12-01 15:31:06,251 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 303 transitions. Word has length 12 [2020-12-01 15:31:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:06,251 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 303 transitions. [2020-12-01 15:31:06,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:31:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 303 transitions. [2020-12-01 15:31:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:31:06,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:06,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:06,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:31:06,254 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:06,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:06,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1073724632, now seen corresponding path program 1 times [2020-12-01 15:31:06,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:06,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503988415] [2020-12-01 15:31:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:06,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503988415] [2020-12-01 15:31:06,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:06,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:31:06,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152611] [2020-12-01 15:31:06,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:31:06,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:06,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:31:06,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:31:06,391 INFO L87 Difference]: Start difference. First operand 131 states and 303 transitions. Second operand 5 states. [2020-12-01 15:31:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:06,459 INFO L93 Difference]: Finished difference Result 118 states and 245 transitions. [2020-12-01 15:31:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:31:06,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-01 15:31:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:06,461 INFO L225 Difference]: With dead ends: 118 [2020-12-01 15:31:06,461 INFO L226 Difference]: Without dead ends: 87 [2020-12-01 15:31:06,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:31:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-01 15:31:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-12-01 15:31:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-01 15:31:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 172 transitions. [2020-12-01 15:31:06,467 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 172 transitions. Word has length 13 [2020-12-01 15:31:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:06,467 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 172 transitions. [2020-12-01 15:31:06,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:31:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 172 transitions. [2020-12-01 15:31:06,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:31:06,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:06,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:06,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:31:06,470 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:06,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash 809328863, now seen corresponding path program 1 times [2020-12-01 15:31:06,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:06,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991455832] [2020-12-01 15:31:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:06,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991455832] [2020-12-01 15:31:06,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:06,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:31:06,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686291362] [2020-12-01 15:31:06,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:31:06,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:06,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:31:06,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:31:06,599 INFO L87 Difference]: Start difference. First operand 87 states and 172 transitions. Second operand 6 states. [2020-12-01 15:31:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:06,675 INFO L93 Difference]: Finished difference Result 76 states and 148 transitions. [2020-12-01 15:31:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:31:06,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-01 15:31:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:06,677 INFO L225 Difference]: With dead ends: 76 [2020-12-01 15:31:06,677 INFO L226 Difference]: Without dead ends: 67 [2020-12-01 15:31:06,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:31:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-01 15:31:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-12-01 15:31:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-01 15:31:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 132 transitions. [2020-12-01 15:31:06,682 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 132 transitions. Word has length 15 [2020-12-01 15:31:06,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:06,683 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 132 transitions. [2020-12-01 15:31:06,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:31:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 132 transitions. [2020-12-01 15:31:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:31:06,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:06,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:06,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:31:06,685 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:06,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:06,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1097223765, now seen corresponding path program 1 times [2020-12-01 15:31:06,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:06,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42630651] [2020-12-01 15:31:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:06,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42630651] [2020-12-01 15:31:06,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:06,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 15:31:06,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325737869] [2020-12-01 15:31:06,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:31:06,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:06,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:31:06,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:31:06,912 INFO L87 Difference]: Start difference. First operand 67 states and 132 transitions. Second operand 10 states. [2020-12-01 15:31:07,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:07,170 INFO L93 Difference]: Finished difference Result 108 states and 197 transitions. [2020-12-01 15:31:07,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:31:07,170 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-12-01 15:31:07,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:07,171 INFO L225 Difference]: With dead ends: 108 [2020-12-01 15:31:07,171 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 15:31:07,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-12-01 15:31:07,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 15:31:07,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-12-01 15:31:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-01 15:31:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 78 transitions. [2020-12-01 15:31:07,175 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 78 transitions. Word has length 18 [2020-12-01 15:31:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:07,176 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 78 transitions. [2020-12-01 15:31:07,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:31:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 78 transitions. [2020-12-01 15:31:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:31:07,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:07,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:07,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:31:07,177 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:07,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:07,179 INFO L82 PathProgramCache]: Analyzing trace with hash -30995043, now seen corresponding path program 2 times [2020-12-01 15:31:07,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:07,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169307122] [2020-12-01 15:31:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:07,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169307122] [2020-12-01 15:31:07,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:07,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 15:31:07,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205667784] [2020-12-01 15:31:07,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:31:07,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:07,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:31:07,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:31:07,313 INFO L87 Difference]: Start difference. First operand 46 states and 78 transitions. Second operand 10 states. [2020-12-01 15:31:07,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:07,489 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2020-12-01 15:31:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:31:07,490 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-12-01 15:31:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:07,491 INFO L225 Difference]: With dead ends: 54 [2020-12-01 15:31:07,491 INFO L226 Difference]: Without dead ends: 44 [2020-12-01 15:31:07,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:31:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-01 15:31:07,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-12-01 15:31:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-01 15:31:07,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2020-12-01 15:31:07,495 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 18 [2020-12-01 15:31:07,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:07,496 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2020-12-01 15:31:07,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:31:07,496 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2020-12-01 15:31:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:31:07,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:07,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:07,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:31:07,498 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:07,498 INFO L82 PathProgramCache]: Analyzing trace with hash -196901277, now seen corresponding path program 3 times [2020-12-01 15:31:07,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:07,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601484556] [2020-12-01 15:31:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:07,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601484556] [2020-12-01 15:31:07,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:07,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 15:31:07,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239734020] [2020-12-01 15:31:07,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:31:07,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:07,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:31:07,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:31:07,682 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand 10 states. [2020-12-01 15:31:07,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:07,865 INFO L93 Difference]: Finished difference Result 58 states and 95 transitions. [2020-12-01 15:31:07,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:31:07,866 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-12-01 15:31:07,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:07,867 INFO L225 Difference]: With dead ends: 58 [2020-12-01 15:31:07,868 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 15:31:07,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:31:07,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 15:31:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-12-01 15:31:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-01 15:31:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 72 transitions. [2020-12-01 15:31:07,873 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 72 transitions. Word has length 18 [2020-12-01 15:31:07,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:07,873 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 72 transitions. [2020-12-01 15:31:07,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:31:07,874 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2020-12-01 15:31:07,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:31:07,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:07,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:07,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:31:07,875 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:07,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1712999733, now seen corresponding path program 4 times [2020-12-01 15:31:07,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:07,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137034755] [2020-12-01 15:31:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:08,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137034755] [2020-12-01 15:31:08,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:08,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 15:31:08,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244681151] [2020-12-01 15:31:08,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:31:08,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:08,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:31:08,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:31:08,060 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 10 states. [2020-12-01 15:31:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:08,226 INFO L93 Difference]: Finished difference Result 59 states and 92 transitions. [2020-12-01 15:31:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:31:08,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-12-01 15:31:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:08,230 INFO L225 Difference]: With dead ends: 59 [2020-12-01 15:31:08,231 INFO L226 Difference]: Without dead ends: 51 [2020-12-01 15:31:08,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:31:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-01 15:31:08,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2020-12-01 15:31:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-01 15:31:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-12-01 15:31:08,234 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 18 [2020-12-01 15:31:08,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:08,235 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-12-01 15:31:08,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:31:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-12-01 15:31:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:31:08,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:08,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:08,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 15:31:08,237 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:08,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1731427213, now seen corresponding path program 5 times [2020-12-01 15:31:08,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:08,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574488179] [2020-12-01 15:31:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:08,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574488179] [2020-12-01 15:31:08,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:08,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:31:08,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969875954] [2020-12-01 15:31:08,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:31:08,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:08,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:31:08,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:31:08,313 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-12-01 15:31:08,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:08,351 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2020-12-01 15:31:08,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:31:08,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-01 15:31:08,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:08,352 INFO L225 Difference]: With dead ends: 39 [2020-12-01 15:31:08,352 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:31:08,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:31:08,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:31:08,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:31:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:31:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:31:08,355 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-01 15:31:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:08,356 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:31:08,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:31:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:31:08,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:31:08,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-01 15:31:08,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:31:08 BasicIcfg [2020-12-01 15:31:08,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:31:08,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:31:08,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:31:08,363 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:31:08,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:30:59" (3/4) ... [2020-12-01 15:31:08,371 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:31:08,380 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:31:08,380 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:31:08,380 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:31:08,389 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:31:08,389 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:31:08,389 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:31:08,390 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:31:08,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3d0c4b0b-4d3f-4227-a560-9cd2c1dfbeb1/bin/uautomizer/witness.graphml [2020-12-01 15:31:08,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:31:08,465 INFO L168 Benchmark]: Toolchain (without parser) took 10648.43 ms. Allocated memory was 92.3 MB in the beginning and 174.1 MB in the end (delta: 81.8 MB). Free memory was 53.0 MB in the beginning and 90.7 MB in the end (delta: -37.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:08,465 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 92.3 MB. Free memory was 70.8 MB in the beginning and 70.8 MB in the end (delta: 56.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:31:08,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 897.51 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 52.8 MB in the beginning and 71.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:08,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.47 ms. Allocated memory is still 115.3 MB. Free memory was 71.3 MB in the beginning and 69.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:08,468 INFO L168 Benchmark]: Boogie Preprocessor took 36.51 ms. Allocated memory is still 115.3 MB. Free memory was 69.6 MB in the beginning and 68.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:08,468 INFO L168 Benchmark]: RCFGBuilder took 493.61 ms. Allocated memory is still 115.3 MB. Free memory was 68.0 MB in the beginning and 46.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:08,469 INFO L168 Benchmark]: TraceAbstraction took 9048.93 ms. Allocated memory was 115.3 MB in the beginning and 174.1 MB in the end (delta: 58.7 MB). Free memory was 45.6 MB in the beginning and 93.8 MB in the end (delta: -48.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:08,470 INFO L168 Benchmark]: Witness Printer took 100.77 ms. Allocated memory is still 174.1 MB. Free memory was 93.8 MB in the beginning and 90.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:08,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 92.3 MB. Free memory was 70.8 MB in the beginning and 70.8 MB in the end (delta: 56.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 897.51 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 52.8 MB in the beginning and 71.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.47 ms. Allocated memory is still 115.3 MB. Free memory was 71.3 MB in the beginning and 69.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.51 ms. Allocated memory is still 115.3 MB. Free memory was 69.6 MB in the beginning and 68.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 493.61 ms. Allocated memory is still 115.3 MB. Free memory was 68.0 MB in the beginning and 46.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9048.93 ms. Allocated memory was 115.3 MB in the beginning and 174.1 MB in the end (delta: 58.7 MB). Free memory was 45.6 MB in the beginning and 93.8 MB in the end (delta: -48.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 100.77 ms. Allocated memory is still 174.1 MB. Free memory was 93.8 MB in the beginning and 90.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 999 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.4s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2778 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 243 SDtfs, 210 SDslu, 742 SDs, 0 SdLazy, 600 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 9531 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...