./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i -s /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ede5453ff4880225cb88b0dd90121515560cc28 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:48:41,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:41,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:41,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:41,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:41,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:41,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:41,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:41,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:41,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:41,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:41,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:41,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:41,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:41,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:41,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:41,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:41,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:41,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:41,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:41,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:41,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:41,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:41,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:41,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:41,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:41,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:41,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:41,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:41,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:41,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:41,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:41,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:41,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:41,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:41,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:41,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:41,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:41,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:41,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:41,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:41,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:48:41,562 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:41,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:41,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:41,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:41,563 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:41,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:41,564 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:48:41,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:48:41,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:48:41,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:41,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:48:41,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:48:41,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:48:41,565 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:48:41,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:48:41,565 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:41,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:48:41,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:41,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:41,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:48:41,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:48:41,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:41,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:41,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:48:41,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:48:41,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:48:41,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:48:41,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:48:41,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_30b56ae7-65d3-4f58-8917-2999d74e9658/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(__VERIFIER_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 -> 3ede5453ff4880225cb88b0dd90121515560cc28 [2019-11-25 08:48:41,717 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:41,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:41,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:41,734 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:41,734 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:41,736 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2019-11-25 08:48:41,795 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/data/4c2799a78/f726ee734f864635b0a08ce216f92d5a/FLAGd3956150a [2019-11-25 08:48:42,225 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:42,226 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2019-11-25 08:48:42,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/data/4c2799a78/f726ee734f864635b0a08ce216f92d5a/FLAGd3956150a [2019-11-25 08:48:42,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/data/4c2799a78/f726ee734f864635b0a08ce216f92d5a [2019-11-25 08:48:42,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:42,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:48:42,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:42,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:42,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:42,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42359333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:42, skipping insertion in model container [2019-11-25 08:48:42,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:42" (1/1) ... [2019-11-25 08:48:42,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:42,672 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:43,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:43,047 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:43,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:43,168 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:43,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43 WrapperNode [2019-11-25 08:48:43,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:43,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:43,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:48:43,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:48:43,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:43,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:43,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:43,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:43,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... [2019-11-25 08:48:43,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:43,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:43,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:43,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:43,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/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 [2019-11-25 08:48:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-25 08:48:43,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-25 08:48:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:48:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:48:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:48:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:43,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:43,320 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-25 08:48:43,538 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:43,539 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:48:43,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:43 BoogieIcfgContainer [2019-11-25 08:48:43,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:43,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:48:43,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:48:43,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:48:43,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:48:42" (1/3) ... [2019-11-25 08:48:43,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bd03d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:43, skipping insertion in model container [2019-11-25 08:48:43,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:43" (2/3) ... [2019-11-25 08:48:43,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bd03d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:43, skipping insertion in model container [2019-11-25 08:48:43,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:43" (3/3) ... [2019-11-25 08:48:43,548 INFO L109 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2019-11-25 08:48:43,580 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,580 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,580 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,580 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,581 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,581 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,581 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,582 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,582 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,582 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,582 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,583 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,583 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,583 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,584 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,584 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,584 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,585 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,585 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,585 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,585 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,586 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,590 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,590 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,590 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,591 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,591 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,591 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,591 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,592 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,592 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,592 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,592 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,593 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,593 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,593 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,593 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,594 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:48:43,605 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-25 08:48:43,606 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:48:43,612 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-25 08:48:43,621 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-25 08:48:43,639 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:48:43,639 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:48:43,639 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:48:43,639 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:43,639 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:43,640 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:48:43,640 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:43,640 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:48:43,650 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 58 transitions [2019-11-25 08:48:45,482 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 16974 states. [2019-11-25 08:48:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 16974 states. [2019-11-25 08:48:45,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-25 08:48:45,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:45,498 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:45,499 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:45,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:45,504 INFO L82 PathProgramCache]: Analyzing trace with hash -71964291, now seen corresponding path program 1 times [2019-11-25 08:48:45,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:45,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194911008] [2019-11-25 08:48:45,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:45,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194911008] [2019-11-25 08:48:45,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:45,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:48:45,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311427701] [2019-11-25 08:48:45,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:48:45,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:45,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:48:45,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:48:45,747 INFO L87 Difference]: Start difference. First operand 16974 states. Second operand 3 states. [2019-11-25 08:48:45,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:45,948 INFO L93 Difference]: Finished difference Result 9029 states and 30601 transitions. [2019-11-25 08:48:45,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:48:45,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-25 08:48:45,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:46,064 INFO L225 Difference]: With dead ends: 9029 [2019-11-25 08:48:46,064 INFO L226 Difference]: Without dead ends: 8561 [2019-11-25 08:48:46,066 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:48:46,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8561 states. [2019-11-25 08:48:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8561 to 7301. [2019-11-25 08:48:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7301 states. [2019-11-25 08:48:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7301 states to 7301 states and 24931 transitions. [2019-11-25 08:48:46,617 INFO L78 Accepts]: Start accepts. Automaton has 7301 states and 24931 transitions. Word has length 21 [2019-11-25 08:48:46,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:46,618 INFO L462 AbstractCegarLoop]: Abstraction has 7301 states and 24931 transitions. [2019-11-25 08:48:46,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:48:46,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7301 states and 24931 transitions. [2019-11-25 08:48:46,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:48:46,622 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:46,622 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:46,622 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:46,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:46,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1724056198, now seen corresponding path program 1 times [2019-11-25 08:48:46,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:46,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702889350] [2019-11-25 08:48:46,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:48:46,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702889350] [2019-11-25 08:48:46,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:46,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:48:46,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084292590] [2019-11-25 08:48:46,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:48:46,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:46,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:48:46,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:48:46,706 INFO L87 Difference]: Start difference. First operand 7301 states and 24931 transitions. Second operand 3 states. [2019-11-25 08:48:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:46,858 INFO L93 Difference]: Finished difference Result 8081 states and 27041 transitions. [2019-11-25 08:48:46,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:48:46,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-25 08:48:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:46,920 INFO L225 Difference]: With dead ends: 8081 [2019-11-25 08:48:46,920 INFO L226 Difference]: Without dead ends: 7829 [2019-11-25 08:48:46,925 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:48:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7829 states. [2019-11-25 08:48:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7829 to 6917. [2019-11-25 08:48:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6917 states. [2019-11-25 08:48:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6917 states to 6917 states and 23292 transitions. [2019-11-25 08:48:47,224 INFO L78 Accepts]: Start accepts. Automaton has 6917 states and 23292 transitions. Word has length 25 [2019-11-25 08:48:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:47,224 INFO L462 AbstractCegarLoop]: Abstraction has 6917 states and 23292 transitions. [2019-11-25 08:48:47,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:48:47,225 INFO L276 IsEmpty]: Start isEmpty. Operand 6917 states and 23292 transitions. [2019-11-25 08:48:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-25 08:48:47,230 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:47,230 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:47,231 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:47,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:47,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1865190416, now seen corresponding path program 1 times [2019-11-25 08:48:47,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:47,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937771367] [2019-11-25 08:48:47,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:48:47,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937771367] [2019-11-25 08:48:47,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:47,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:48:47,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360747663] [2019-11-25 08:48:47,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:48:47,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:47,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:48:47,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:48:47,310 INFO L87 Difference]: Start difference. First operand 6917 states and 23292 transitions. Second operand 3 states. [2019-11-25 08:48:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:47,379 INFO L93 Difference]: Finished difference Result 6953 states and 22695 transitions. [2019-11-25 08:48:47,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:48:47,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-11-25 08:48:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:47,404 INFO L225 Difference]: With dead ends: 6953 [2019-11-25 08:48:47,404 INFO L226 Difference]: Without dead ends: 6665 [2019-11-25 08:48:47,405 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:48:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2019-11-25 08:48:47,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6233. [2019-11-25 08:48:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6233 states. [2019-11-25 08:48:47,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 20346 transitions. [2019-11-25 08:48:47,808 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 20346 transitions. Word has length 29 [2019-11-25 08:48:47,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:47,809 INFO L462 AbstractCegarLoop]: Abstraction has 6233 states and 20346 transitions. [2019-11-25 08:48:47,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:48:47,809 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 20346 transitions. [2019-11-25 08:48:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-25 08:48:47,813 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:47,814 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:47,814 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:47,815 INFO L82 PathProgramCache]: Analyzing trace with hash -842417849, now seen corresponding path program 1 times [2019-11-25 08:48:47,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:47,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001602686] [2019-11-25 08:48:47,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:48:47,897 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001602686] [2019-11-25 08:48:47,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:47,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:48:47,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041605599] [2019-11-25 08:48:47,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:48:47,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:47,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:48:47,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:47,899 INFO L87 Difference]: Start difference. First operand 6233 states and 20346 transitions. Second operand 5 states. [2019-11-25 08:48:48,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:48,046 INFO L93 Difference]: Finished difference Result 8861 states and 27895 transitions. [2019-11-25 08:48:48,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:48:48,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-25 08:48:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:48,075 INFO L225 Difference]: With dead ends: 8861 [2019-11-25 08:48:48,076 INFO L226 Difference]: Without dead ends: 8585 [2019-11-25 08:48:48,076 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:48:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8585 states. [2019-11-25 08:48:48,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8585 to 6313. [2019-11-25 08:48:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6313 states. [2019-11-25 08:48:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6313 states to 6313 states and 20590 transitions. [2019-11-25 08:48:48,328 INFO L78 Accepts]: Start accepts. Automaton has 6313 states and 20590 transitions. Word has length 31 [2019-11-25 08:48:48,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:48,329 INFO L462 AbstractCegarLoop]: Abstraction has 6313 states and 20590 transitions. [2019-11-25 08:48:48,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:48:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6313 states and 20590 transitions. [2019-11-25 08:48:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-25 08:48:48,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:48,333 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:48,334 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:48,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1533237303, now seen corresponding path program 1 times [2019-11-25 08:48:48,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:48,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680092026] [2019-11-25 08:48:48,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:48:48,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680092026] [2019-11-25 08:48:48,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:48,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:48:48,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649059814] [2019-11-25 08:48:48,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:48:48,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:48,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:48:48,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:48,379 INFO L87 Difference]: Start difference. First operand 6313 states and 20590 transitions. Second operand 5 states. [2019-11-25 08:48:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:48,526 INFO L93 Difference]: Finished difference Result 8065 states and 25091 transitions. [2019-11-25 08:48:48,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:48:48,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-25 08:48:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:48,551 INFO L225 Difference]: With dead ends: 8065 [2019-11-25 08:48:48,551 INFO L226 Difference]: Without dead ends: 7489 [2019-11-25 08:48:48,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:48:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2019-11-25 08:48:48,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 4905. [2019-11-25 08:48:48,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4905 states. [2019-11-25 08:48:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4905 states to 4905 states and 15791 transitions. [2019-11-25 08:48:48,732 INFO L78 Accepts]: Start accepts. Automaton has 4905 states and 15791 transitions. Word has length 31 [2019-11-25 08:48:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:48,733 INFO L462 AbstractCegarLoop]: Abstraction has 4905 states and 15791 transitions. [2019-11-25 08:48:48,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:48:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4905 states and 15791 transitions. [2019-11-25 08:48:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-25 08:48:48,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:48,745 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:48,752 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:48,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:48,753 INFO L82 PathProgramCache]: Analyzing trace with hash -53997041, now seen corresponding path program 1 times [2019-11-25 08:48:48,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:48,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370600446] [2019-11-25 08:48:48,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:48:48,821 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370600446] [2019-11-25 08:48:48,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:48,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:48:48,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249541882] [2019-11-25 08:48:48,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:48:48,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:48,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:48:48,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:48,822 INFO L87 Difference]: Start difference. First operand 4905 states and 15791 transitions. Second operand 5 states. [2019-11-25 08:48:48,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:48,946 INFO L93 Difference]: Finished difference Result 6365 states and 19858 transitions. [2019-11-25 08:48:48,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:48:48,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-11-25 08:48:48,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:48,967 INFO L225 Difference]: With dead ends: 6365 [2019-11-25 08:48:48,967 INFO L226 Difference]: Without dead ends: 6013 [2019-11-25 08:48:48,968 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:48:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6013 states. [2019-11-25 08:48:49,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6013 to 4957. [2019-11-25 08:48:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4957 states. [2019-11-25 08:48:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 15858 transitions. [2019-11-25 08:48:49,120 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 15858 transitions. Word has length 35 [2019-11-25 08:48:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:49,121 INFO L462 AbstractCegarLoop]: Abstraction has 4957 states and 15858 transitions. [2019-11-25 08:48:49,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:48:49,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 15858 transitions. [2019-11-25 08:48:49,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-25 08:48:49,257 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:49,258 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:49,258 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:49,258 INFO L82 PathProgramCache]: Analyzing trace with hash 631493869, now seen corresponding path program 2 times [2019-11-25 08:48:49,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:49,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244204429] [2019-11-25 08:48:49,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:48:49,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244204429] [2019-11-25 08:48:49,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:49,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:48:49,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115983947] [2019-11-25 08:48:49,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:48:49,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:49,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:48:49,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:49,310 INFO L87 Difference]: Start difference. First operand 4957 states and 15858 transitions. Second operand 5 states. [2019-11-25 08:48:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:49,448 INFO L93 Difference]: Finished difference Result 5305 states and 16447 transitions. [2019-11-25 08:48:49,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:48:49,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-11-25 08:48:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:49,458 INFO L225 Difference]: With dead ends: 5305 [2019-11-25 08:48:49,458 INFO L226 Difference]: Without dead ends: 4557 [2019-11-25 08:48:49,459 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:48:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2019-11-25 08:48:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 3201. [2019-11-25 08:48:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3201 states. [2019-11-25 08:48:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 10245 transitions. [2019-11-25 08:48:49,555 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 10245 transitions. Word has length 35 [2019-11-25 08:48:49,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:49,555 INFO L462 AbstractCegarLoop]: Abstraction has 3201 states and 10245 transitions. [2019-11-25 08:48:49,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:48:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 10245 transitions. [2019-11-25 08:48:49,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-25 08:48:49,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:49,561 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:49,562 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:49,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:49,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1299393709, now seen corresponding path program 1 times [2019-11-25 08:48:49,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:49,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479792178] [2019-11-25 08:48:49,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:48:49,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479792178] [2019-11-25 08:48:49,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:49,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:48:49,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568234838] [2019-11-25 08:48:49,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:48:49,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:49,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:48:49,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:49,606 INFO L87 Difference]: Start difference. First operand 3201 states and 10245 transitions. Second operand 5 states. [2019-11-25 08:48:49,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:49,713 INFO L93 Difference]: Finished difference Result 3897 states and 11979 transitions. [2019-11-25 08:48:49,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:48:49,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-11-25 08:48:49,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:49,719 INFO L225 Difference]: With dead ends: 3897 [2019-11-25 08:48:49,719 INFO L226 Difference]: Without dead ends: 2945 [2019-11-25 08:48:49,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:48:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2019-11-25 08:48:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2801. [2019-11-25 08:48:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2019-11-25 08:48:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 8785 transitions. [2019-11-25 08:48:49,789 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 8785 transitions. Word has length 35 [2019-11-25 08:48:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:49,790 INFO L462 AbstractCegarLoop]: Abstraction has 2801 states and 8785 transitions. [2019-11-25 08:48:49,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:48:49,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 8785 transitions. [2019-11-25 08:48:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-25 08:48:49,797 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:49,797 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:49,797 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:48:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:49,798 INFO L82 PathProgramCache]: Analyzing trace with hash 873129171, now seen corresponding path program 1 times [2019-11-25 08:48:49,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:49,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647485362] [2019-11-25 08:48:49,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:48:49,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647485362] [2019-11-25 08:48:49,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:49,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:48:49,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613077840] [2019-11-25 08:48:49,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:48:49,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:49,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:48:49,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:49,850 INFO L87 Difference]: Start difference. First operand 2801 states and 8785 transitions. Second operand 5 states. [2019-11-25 08:48:49,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:49,945 INFO L93 Difference]: Finished difference Result 2289 states and 6917 transitions. [2019-11-25 08:48:49,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:48:49,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-11-25 08:48:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:49,946 INFO L225 Difference]: With dead ends: 2289 [2019-11-25 08:48:49,946 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:48:49,946 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:48:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:48:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:48:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:48:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:48:49,947 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-11-25 08:48:49,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:49,947 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:49,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:48:49,947 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:48:49,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:48:49,950 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-25 08:48:49,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:48:49 BasicIcfg [2019-11-25 08:48:49,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:48:49,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:49,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:49,954 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:49,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:43" (3/4) ... [2019-11-25 08:48:49,961 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:48:49,979 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-25 08:48:49,982 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-25 08:48:49,983 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:48:49,983 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:48:50,021 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_30b56ae7-65d3-4f58-8917-2999d74e9658/bin/uautomizer/witness.graphml [2019-11-25 08:48:50,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:50,024 INFO L168 Benchmark]: Toolchain (without parser) took 7419.21 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 521.7 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -263.3 MB). Peak memory consumption was 258.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:50,024 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:50,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:50,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:50,026 INFO L168 Benchmark]: Boogie Preprocessor took 32.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:50,026 INFO L168 Benchmark]: RCFGBuilder took 285.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:50,027 INFO L168 Benchmark]: TraceAbstraction took 6412.23 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 395.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -143.5 MB). Peak memory consumption was 252.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:50,027 INFO L168 Benchmark]: Witness Printer took 68.60 ms. Allocated memory is still 1.6 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:50,030 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 564.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 285.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6412.23 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 395.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -143.5 MB). Peak memory consumption was 252.4 MB. Max. memory is 11.5 GB. * Witness Printer took 68.60 ms. Allocated memory is still 1.6 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 680]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 680]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 680]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 680]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 67 locations, 4 error locations. Result: SAFE, OverallTime: 6.3s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 864 SDtfs, 635 SDslu, 1167 SDs, 0 SdLazy, 350 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16974occurred 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: 1.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 10016 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 268 ConstructedInterpolants, 0 QuantifiedInterpolants, 10348 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 59/59 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...