./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/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 6029375071a37af887817933cb6d522f173528f0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:56:07,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:56:07,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:56:07,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:56:07,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:56:07,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:56:07,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:56:07,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:56:07,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:56:07,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:56:07,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:56:07,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:56:07,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:56:07,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:56:07,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:56:07,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:56:07,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:56:07,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:56:07,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:56:07,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:56:07,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:56:07,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:56:07,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:56:07,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:56:07,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:56:07,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:56:07,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:56:07,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:56:07,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:56:07,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:56:07,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:56:07,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:56:07,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:56:07,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:56:07,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:56:07,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:56:07,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:56:07,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:56:07,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:56:07,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:56:07,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:56:07,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:56:07,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:56:07,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:56:07,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:56:07,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:56:07,837 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:56:07,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:56:07,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:56:07,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:56:07,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:56:07,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:56:07,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:56:07,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:56:07,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:56:07,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:56:07,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:56:07,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:56:07,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:56:07,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:56:07,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:56:07,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:56:07,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:56:07,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:56:07,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:56:07,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:56:07,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:56:07,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:56:07,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:56:07,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:56:07,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:56:07,843 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_7bf84534-ece5-487a-9247-61b10cfdaa92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6029375071a37af887817933cb6d522f173528f0 [2020-11-29 23:56:08,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:56:08,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:56:08,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:56:08,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:56:08,105 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:56:08,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-11-29 23:56:08,192 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/data/cd9ce000d/b85b7b2bb7614bdd8dcd12aeb0d627d0/FLAG144bfa318 [2020-11-29 23:56:08,646 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:56:08,647 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-11-29 23:56:08,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/data/cd9ce000d/b85b7b2bb7614bdd8dcd12aeb0d627d0/FLAG144bfa318 [2020-11-29 23:56:09,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/data/cd9ce000d/b85b7b2bb7614bdd8dcd12aeb0d627d0 [2020-11-29 23:56:09,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:56:09,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:56:09,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:09,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:56:09,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:56:09,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b1ef58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09, skipping insertion in model container [2020-11-29 23:56:09,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:56:09,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:56:09,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:09,316 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:56:09,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:09,374 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:56:09,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09 WrapperNode [2020-11-29 23:56:09,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:09,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:09,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:56:09,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:56:09,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:09,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:56:09,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:56:09,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:56:09,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... [2020-11-29 23:56:09,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:56:09,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:56:09,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:56:09,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:56:09,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:56:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:56:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:56:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:56:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:56:10,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:56:10,291 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-29 23:56:10,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:10 BoogieIcfgContainer [2020-11-29 23:56:10,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:56:10,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:56:10,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:56:10,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:56:10,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:56:09" (1/3) ... [2020-11-29 23:56:10,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d82483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:56:10, skipping insertion in model container [2020-11-29 23:56:10,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:09" (2/3) ... [2020-11-29 23:56:10,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d82483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:56:10, skipping insertion in model container [2020-11-29 23:56:10,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:10" (3/3) ... [2020-11-29 23:56:10,302 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-11-29 23:56:10,313 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:56:10,319 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:56:10,329 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:56:10,352 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:56:10,352 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:56:10,353 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:56:10,353 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:56:10,353 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:56:10,353 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:56:10,353 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:56:10,353 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:56:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-11-29 23:56:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:56:10,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:10,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:10,376 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:10,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2020-11-29 23:56:10,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:10,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911560444] [2020-11-29 23:56:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:10,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911560444] [2020-11-29 23:56:10,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:10,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:10,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297484228] [2020-11-29 23:56:10,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:56:10,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:10,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:56:10,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:10,632 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-11-29 23:56:10,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:10,679 INFO L93 Difference]: Finished difference Result 151 states and 252 transitions. [2020-11-29 23:56:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:56:10,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 23:56:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:10,691 INFO L225 Difference]: With dead ends: 151 [2020-11-29 23:56:10,692 INFO L226 Difference]: Without dead ends: 68 [2020-11-29 23:56:10,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-29 23:56:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-29 23:56:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 23:56:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2020-11-29 23:56:10,730 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2020-11-29 23:56:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:10,731 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2020-11-29 23:56:10,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:56:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2020-11-29 23:56:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 23:56:10,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:10,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:10,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:56:10,733 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:10,734 INFO L82 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2020-11-29 23:56:10,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:10,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2938706] [2020-11-29 23:56:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:10,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2938706] [2020-11-29 23:56:10,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:10,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:10,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265574545] [2020-11-29 23:56:10,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:10,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:10,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:10,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:10,886 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand 4 states. [2020-11-29 23:56:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:10,958 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2020-11-29 23:56:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:10,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-29 23:56:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:10,961 INFO L225 Difference]: With dead ends: 88 [2020-11-29 23:56:10,961 INFO L226 Difference]: Without dead ends: 68 [2020-11-29 23:56:10,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-29 23:56:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-29 23:56:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 23:56:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-11-29 23:56:10,972 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2020-11-29 23:56:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:10,972 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-11-29 23:56:10,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:10,972 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-11-29 23:56:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 23:56:10,974 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:10,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:10,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:56:10,975 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:10,975 INFO L82 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2020-11-29 23:56:10,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:10,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465085261] [2020-11-29 23:56:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:11,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465085261] [2020-11-29 23:56:11,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:11,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:11,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243493835] [2020-11-29 23:56:11,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:56:11,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:11,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:56:11,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:11,063 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-11-29 23:56:11,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:11,183 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2020-11-29 23:56:11,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:56:11,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-29 23:56:11,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:11,185 INFO L225 Difference]: With dead ends: 119 [2020-11-29 23:56:11,185 INFO L226 Difference]: Without dead ends: 69 [2020-11-29 23:56:11,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-29 23:56:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-11-29 23:56:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 23:56:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2020-11-29 23:56:11,195 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2020-11-29 23:56:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:11,195 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2020-11-29 23:56:11,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:56:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2020-11-29 23:56:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 23:56:11,197 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:11,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:11,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:56:11,198 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:11,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2020-11-29 23:56:11,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:11,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400499557] [2020-11-29 23:56:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:11,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400499557] [2020-11-29 23:56:11,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:11,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:11,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592080986] [2020-11-29 23:56:11,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:56:11,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:11,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:56:11,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:11,275 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand 3 states. [2020-11-29 23:56:11,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:11,335 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2020-11-29 23:56:11,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:56:11,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-29 23:56:11,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:11,336 INFO L225 Difference]: With dead ends: 129 [2020-11-29 23:56:11,337 INFO L226 Difference]: Without dead ends: 75 [2020-11-29 23:56:11,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:11,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-29 23:56:11,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-11-29 23:56:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 23:56:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2020-11-29 23:56:11,346 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2020-11-29 23:56:11,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:11,347 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2020-11-29 23:56:11,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:56:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2020-11-29 23:56:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 23:56:11,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:11,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:11,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:56:11,349 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:11,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:11,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2020-11-29 23:56:11,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:11,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980414170] [2020-11-29 23:56:11,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:11,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980414170] [2020-11-29 23:56:11,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:11,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:11,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715652440] [2020-11-29 23:56:11,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:11,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:11,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:11,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:11,456 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand 4 states. [2020-11-29 23:56:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:11,627 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2020-11-29 23:56:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:11,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-29 23:56:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:11,628 INFO L225 Difference]: With dead ends: 136 [2020-11-29 23:56:11,628 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 23:56:11,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:11,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 23:56:11,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-11-29 23:56:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-29 23:56:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2020-11-29 23:56:11,636 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2020-11-29 23:56:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:11,637 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2020-11-29 23:56:11,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:11,637 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2020-11-29 23:56:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 23:56:11,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:11,638 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-11-29 23:56:11,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:56:11,639 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:11,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:11,639 INFO L82 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2020-11-29 23:56:11,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:11,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398244246] [2020-11-29 23:56:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:11,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398244246] [2020-11-29 23:56:11,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947624071] [2020-11-29 23:56:11,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:11,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:56:11,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:11,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:11,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-29 23:56:11,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802386227] [2020-11-29 23:56:11,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:11,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:11,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:11,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:11,863 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand 5 states. [2020-11-29 23:56:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:11,917 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2020-11-29 23:56:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:11,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-11-29 23:56:11,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:11,920 INFO L225 Difference]: With dead ends: 160 [2020-11-29 23:56:11,920 INFO L226 Difference]: Without dead ends: 103 [2020-11-29 23:56:11,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-29 23:56:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-11-29 23:56:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 23:56:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2020-11-29 23:56:11,929 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2020-11-29 23:56:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:11,929 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2020-11-29 23:56:11,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2020-11-29 23:56:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 23:56:11,931 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:11,931 INFO L422 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, 1, 1, 1, 1] [2020-11-29 23:56:12,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 23:56:12,157 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:12,158 INFO L82 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2020-11-29 23:56:12,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:12,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611318744] [2020-11-29 23:56:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:12,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611318744] [2020-11-29 23:56:12,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870479418] [2020-11-29 23:56:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:12,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:56:12,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:12,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:12,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 23:56:12,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715672326] [2020-11-29 23:56:12,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:56:12,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:12,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:56:12,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:56:12,498 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand 6 states. [2020-11-29 23:56:12,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:12,612 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2020-11-29 23:56:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:56:12,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-11-29 23:56:12,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:12,613 INFO L225 Difference]: With dead ends: 126 [2020-11-29 23:56:12,613 INFO L226 Difference]: Without dead ends: 79 [2020-11-29 23:56:12,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:56:12,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-29 23:56:12,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-11-29 23:56:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 23:56:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2020-11-29 23:56:12,620 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 35 [2020-11-29 23:56:12,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:12,621 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2020-11-29 23:56:12,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:56:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2020-11-29 23:56:12,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 23:56:12,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:12,622 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1] [2020-11-29 23:56:12,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:12,823 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:12,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:12,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2010695315, now seen corresponding path program 2 times [2020-11-29 23:56:12,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:12,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605018731] [2020-11-29 23:56:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:12,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605018731] [2020-11-29 23:56:12,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139095443] [2020-11-29 23:56:12,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:13,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 23:56:13,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:13,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 23:56:13,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 23:56:13,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:13,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2020-11-29 23:56:13,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593470706] [2020-11-29 23:56:13,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:56:13,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:13,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:56:13,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:56:13,189 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand 6 states. [2020-11-29 23:56:13,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:13,416 INFO L93 Difference]: Finished difference Result 172 states and 227 transitions. [2020-11-29 23:56:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:56:13,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-11-29 23:56:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:13,418 INFO L225 Difference]: With dead ends: 172 [2020-11-29 23:56:13,418 INFO L226 Difference]: Without dead ends: 168 [2020-11-29 23:56:13,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-29 23:56:13,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-29 23:56:13,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 127. [2020-11-29 23:56:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-29 23:56:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-11-29 23:56:13,437 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 36 [2020-11-29 23:56:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:13,437 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-11-29 23:56:13,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:56:13,437 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-11-29 23:56:13,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 23:56:13,439 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:13,439 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2020-11-29 23:56:13,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:13,640 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:13,640 INFO L82 PathProgramCache]: Analyzing trace with hash 508659463, now seen corresponding path program 1 times [2020-11-29 23:56:13,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:13,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115246261] [2020-11-29 23:56:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:13,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115246261] [2020-11-29 23:56:13,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345460605] [2020-11-29 23:56:13,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:13,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:56:13,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:13,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:13,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 23:56:13,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725632409] [2020-11-29 23:56:13,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:56:13,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:13,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:56:13,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:56:13,846 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 6 states. [2020-11-29 23:56:13,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:13,935 INFO L93 Difference]: Finished difference Result 288 states and 395 transitions. [2020-11-29 23:56:13,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:56:13,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-11-29 23:56:13,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:13,938 INFO L225 Difference]: With dead ends: 288 [2020-11-29 23:56:13,938 INFO L226 Difference]: Without dead ends: 188 [2020-11-29 23:56:13,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:56:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-11-29 23:56:13,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 134. [2020-11-29 23:56:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 23:56:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 182 transitions. [2020-11-29 23:56:13,951 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 182 transitions. Word has length 38 [2020-11-29 23:56:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:13,951 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 182 transitions. [2020-11-29 23:56:13,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:56:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 182 transitions. [2020-11-29 23:56:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-29 23:56:13,953 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:13,953 INFO L422 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, 1, 1, 1, 1, 1] [2020-11-29 23:56:14,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:14,181 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:14,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:14,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1319305574, now seen corresponding path program 1 times [2020-11-29 23:56:14,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:14,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458125068] [2020-11-29 23:56:14,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:14,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458125068] [2020-11-29 23:56:14,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629524901] [2020-11-29 23:56:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:14,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:56:14,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:14,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:14,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-29 23:56:14,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249064817] [2020-11-29 23:56:14,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:56:14,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:14,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:56:14,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:14,445 INFO L87 Difference]: Start difference. First operand 134 states and 182 transitions. Second operand 7 states. [2020-11-29 23:56:14,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:14,711 INFO L93 Difference]: Finished difference Result 234 states and 325 transitions. [2020-11-29 23:56:14,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:56:14,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-11-29 23:56:14,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:14,713 INFO L225 Difference]: With dead ends: 234 [2020-11-29 23:56:14,714 INFO L226 Difference]: Without dead ends: 146 [2020-11-29 23:56:14,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-29 23:56:14,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2020-11-29 23:56:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 23:56:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 184 transitions. [2020-11-29 23:56:14,729 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 184 transitions. Word has length 40 [2020-11-29 23:56:14,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:14,730 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 184 transitions. [2020-11-29 23:56:14,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:56:14,731 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 184 transitions. [2020-11-29 23:56:14,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-29 23:56:14,734 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:14,734 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1] [2020-11-29 23:56:14,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 23:56:14,961 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:14,962 INFO L82 PathProgramCache]: Analyzing trace with hash -976708544, now seen corresponding path program 2 times [2020-11-29 23:56:14,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:14,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037305801] [2020-11-29 23:56:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:15,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037305801] [2020-11-29 23:56:15,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015655186] [2020-11-29 23:56:15,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:15,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 23:56:15,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:15,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:56:15,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-29 23:56:15,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:15,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-11-29 23:56:15,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953687665] [2020-11-29 23:56:15,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:15,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:15,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:15,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:56:15,154 INFO L87 Difference]: Start difference. First operand 136 states and 184 transitions. Second operand 5 states. [2020-11-29 23:56:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:15,213 INFO L93 Difference]: Finished difference Result 155 states and 203 transitions. [2020-11-29 23:56:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:15,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-11-29 23:56:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:15,215 INFO L225 Difference]: With dead ends: 155 [2020-11-29 23:56:15,215 INFO L226 Difference]: Without dead ends: 150 [2020-11-29 23:56:15,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:56:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-29 23:56:15,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2020-11-29 23:56:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-29 23:56:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 194 transitions. [2020-11-29 23:56:15,223 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 194 transitions. Word has length 41 [2020-11-29 23:56:15,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:15,224 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 194 transitions. [2020-11-29 23:56:15,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:15,224 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 194 transitions. [2020-11-29 23:56:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-29 23:56:15,225 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:15,225 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1] [2020-11-29 23:56:15,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:15,445 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash -974861502, now seen corresponding path program 1 times [2020-11-29 23:56:15,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:15,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626377353] [2020-11-29 23:56:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-29 23:56:15,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626377353] [2020-11-29 23:56:15,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:15,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:56:15,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135876995] [2020-11-29 23:56:15,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:56:15,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:15,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:56:15,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:15,506 INFO L87 Difference]: Start difference. First operand 145 states and 194 transitions. Second operand 5 states. [2020-11-29 23:56:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:15,546 INFO L93 Difference]: Finished difference Result 150 states and 198 transitions. [2020-11-29 23:56:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:56:15,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-11-29 23:56:15,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:15,548 INFO L225 Difference]: With dead ends: 150 [2020-11-29 23:56:15,549 INFO L226 Difference]: Without dead ends: 140 [2020-11-29 23:56:15,549 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 [2020-11-29 23:56:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-29 23:56:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-11-29 23:56:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-29 23:56:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2020-11-29 23:56:15,558 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 41 [2020-11-29 23:56:15,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:15,558 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2020-11-29 23:56:15,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:56:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2020-11-29 23:56:15,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-29 23:56:15,563 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:15,563 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1] [2020-11-29 23:56:15,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 23:56:15,563 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:15,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:15,564 INFO L82 PathProgramCache]: Analyzing trace with hash -543462300, now seen corresponding path program 1 times [2020-11-29 23:56:15,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:15,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931886799] [2020-11-29 23:56:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:15,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931886799] [2020-11-29 23:56:15,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726072720] [2020-11-29 23:56:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:15,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:56:15,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:15,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:15,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-29 23:56:15,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259158144] [2020-11-29 23:56:15,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:56:15,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:15,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:56:15,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:15,773 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand 7 states. [2020-11-29 23:56:15,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:15,863 INFO L93 Difference]: Finished difference Result 315 states and 414 transitions. [2020-11-29 23:56:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:56:15,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-11-29 23:56:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:15,867 INFO L225 Difference]: With dead ends: 315 [2020-11-29 23:56:15,867 INFO L226 Difference]: Without dead ends: 208 [2020-11-29 23:56:15,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:15,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-29 23:56:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 147. [2020-11-29 23:56:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-29 23:56:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2020-11-29 23:56:15,875 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 42 [2020-11-29 23:56:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:15,876 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2020-11-29 23:56:15,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:56:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2020-11-29 23:56:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 23:56:15,877 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:15,877 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:16,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:16,105 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:16,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:16,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1931714523, now seen corresponding path program 1 times [2020-11-29 23:56:16,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:16,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407404246] [2020-11-29 23:56:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:16,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407404246] [2020-11-29 23:56:16,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938735152] [2020-11-29 23:56:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:16,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 23:56:16,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:16,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:16,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-29 23:56:16,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427165210] [2020-11-29 23:56:16,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:56:16,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:16,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:56:16,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:56:16,403 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand 8 states. [2020-11-29 23:56:16,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:16,663 INFO L93 Difference]: Finished difference Result 251 states and 337 transitions. [2020-11-29 23:56:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:56:16,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-11-29 23:56:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:16,665 INFO L225 Difference]: With dead ends: 251 [2020-11-29 23:56:16,665 INFO L226 Difference]: Without dead ends: 159 [2020-11-29 23:56:16,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:56:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-29 23:56:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2020-11-29 23:56:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-29 23:56:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2020-11-29 23:56:16,674 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 44 [2020-11-29 23:56:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:16,674 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2020-11-29 23:56:16,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:56:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2020-11-29 23:56:16,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 23:56:16,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:16,675 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1] [2020-11-29 23:56:16,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 23:56:16,893 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:16,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:16,894 INFO L82 PathProgramCache]: Analyzing trace with hash 514014493, now seen corresponding path program 2 times [2020-11-29 23:56:16,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:16,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524421095] [2020-11-29 23:56:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:16,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524421095] [2020-11-29 23:56:16,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670546006] [2020-11-29 23:56:16,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:17,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 23:56:17,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:17,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:56:17,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-29 23:56:17,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:17,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2020-11-29 23:56:17,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386203372] [2020-11-29 23:56:17,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:56:17,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:17,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:56:17,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:56:17,107 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand 6 states. [2020-11-29 23:56:17,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:17,248 INFO L93 Difference]: Finished difference Result 182 states and 232 transitions. [2020-11-29 23:56:17,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:56:17,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-11-29 23:56:17,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:17,250 INFO L225 Difference]: With dead ends: 182 [2020-11-29 23:56:17,250 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 23:56:17,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-11-29 23:56:17,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 23:56:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2020-11-29 23:56:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-29 23:56:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 191 transitions. [2020-11-29 23:56:17,261 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 191 transitions. Word has length 45 [2020-11-29 23:56:17,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:17,262 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 191 transitions. [2020-11-29 23:56:17,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:56:17,263 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 191 transitions. [2020-11-29 23:56:17,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 23:56:17,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:17,264 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:17,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 23:56:17,489 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:17,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:17,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1892120530, now seen corresponding path program 1 times [2020-11-29 23:56:17,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:17,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893529229] [2020-11-29 23:56:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:17,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893529229] [2020-11-29 23:56:17,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660019451] [2020-11-29 23:56:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:17,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:56:17,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:17,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:17,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-29 23:56:17,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589669076] [2020-11-29 23:56:17,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:56:17,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:17,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:56:17,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:56:17,775 INFO L87 Difference]: Start difference. First operand 149 states and 191 transitions. Second operand 8 states. [2020-11-29 23:56:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:17,875 INFO L93 Difference]: Finished difference Result 330 states and 422 transitions. [2020-11-29 23:56:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:56:17,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-11-29 23:56:17,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:17,877 INFO L225 Difference]: With dead ends: 330 [2020-11-29 23:56:17,877 INFO L226 Difference]: Without dead ends: 220 [2020-11-29 23:56:17,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:56:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-29 23:56:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 156. [2020-11-29 23:56:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-29 23:56:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 199 transitions. [2020-11-29 23:56:17,889 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 199 transitions. Word has length 49 [2020-11-29 23:56:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:17,889 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 199 transitions. [2020-11-29 23:56:17,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:56:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 199 transitions. [2020-11-29 23:56:17,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 23:56:17,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:17,891 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:18,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 23:56:18,105 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:18,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:18,106 INFO L82 PathProgramCache]: Analyzing trace with hash -260802349, now seen corresponding path program 1 times [2020-11-29 23:56:18,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:18,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000990533] [2020-11-29 23:56:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:18,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000990533] [2020-11-29 23:56:18,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900005926] [2020-11-29 23:56:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:18,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 23:56:18,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:18,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:18,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-29 23:56:18,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682196458] [2020-11-29 23:56:18,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 23:56:18,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:18,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 23:56:18,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:56:18,438 INFO L87 Difference]: Start difference. First operand 156 states and 199 transitions. Second operand 9 states. [2020-11-29 23:56:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:18,680 INFO L93 Difference]: Finished difference Result 260 states and 339 transitions. [2020-11-29 23:56:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:56:18,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-11-29 23:56:18,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:18,682 INFO L225 Difference]: With dead ends: 260 [2020-11-29 23:56:18,682 INFO L226 Difference]: Without dead ends: 168 [2020-11-29 23:56:18,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:56:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-29 23:56:18,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 158. [2020-11-29 23:56:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-29 23:56:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 201 transitions. [2020-11-29 23:56:18,691 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 201 transitions. Word has length 51 [2020-11-29 23:56:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:18,691 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 201 transitions. [2020-11-29 23:56:18,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 23:56:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 201 transitions. [2020-11-29 23:56:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-29 23:56:18,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:18,693 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:18,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 23:56:18,907 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:18,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1844505351, now seen corresponding path program 2 times [2020-11-29 23:56:18,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:18,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530539954] [2020-11-29 23:56:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:18,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530539954] [2020-11-29 23:56:18,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453260885] [2020-11-29 23:56:18,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:19,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 23:56:19,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:19,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 23:56:19,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-29 23:56:19,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:19,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2020-11-29 23:56:19,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941799784] [2020-11-29 23:56:19,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:56:19,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:19,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:56:19,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:56:19,118 INFO L87 Difference]: Start difference. First operand 158 states and 201 transitions. Second operand 7 states. [2020-11-29 23:56:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:19,290 INFO L93 Difference]: Finished difference Result 256 states and 317 transitions. [2020-11-29 23:56:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:56:19,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-11-29 23:56:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:19,293 INFO L225 Difference]: With dead ends: 256 [2020-11-29 23:56:19,293 INFO L226 Difference]: Without dead ends: 206 [2020-11-29 23:56:19,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-11-29 23:56:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-11-29 23:56:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 177. [2020-11-29 23:56:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-29 23:56:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 223 transitions. [2020-11-29 23:56:19,318 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 223 transitions. Word has length 52 [2020-11-29 23:56:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:19,319 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 223 transitions. [2020-11-29 23:56:19,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:56:19,319 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 223 transitions. [2020-11-29 23:56:19,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-29 23:56:19,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:19,320 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:19,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 23:56:19,533 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:19,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:19,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1144040006, now seen corresponding path program 1 times [2020-11-29 23:56:19,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:19,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026954241] [2020-11-29 23:56:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:19,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026954241] [2020-11-29 23:56:19,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522321117] [2020-11-29 23:56:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:19,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 23:56:19,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:19,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:19,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-29 23:56:19,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211411089] [2020-11-29 23:56:19,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 23:56:19,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 23:56:19,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:56:19,718 INFO L87 Difference]: Start difference. First operand 177 states and 223 transitions. Second operand 9 states. [2020-11-29 23:56:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:19,829 INFO L93 Difference]: Finished difference Result 391 states and 491 transitions. [2020-11-29 23:56:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:56:19,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-11-29 23:56:19,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:19,832 INFO L225 Difference]: With dead ends: 391 [2020-11-29 23:56:19,832 INFO L226 Difference]: Without dead ends: 259 [2020-11-29 23:56:19,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:56:19,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-11-29 23:56:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 184. [2020-11-29 23:56:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-29 23:56:19,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 231 transitions. [2020-11-29 23:56:19,844 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 231 transitions. Word has length 54 [2020-11-29 23:56:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:19,844 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 231 transitions. [2020-11-29 23:56:19,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 23:56:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 231 transitions. [2020-11-29 23:56:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-29 23:56:19,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:19,845 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:20,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:20,065 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:20,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:20,065 INFO L82 PathProgramCache]: Analyzing trace with hash -988904487, now seen corresponding path program 1 times [2020-11-29 23:56:20,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:20,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714166402] [2020-11-29 23:56:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-29 23:56:20,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714166402] [2020-11-29 23:56:20,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:20,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:56:20,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123172920] [2020-11-29 23:56:20,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:56:20,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:20,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:56:20,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:20,099 INFO L87 Difference]: Start difference. First operand 184 states and 231 transitions. Second operand 3 states. [2020-11-29 23:56:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:20,163 INFO L93 Difference]: Finished difference Result 255 states and 316 transitions. [2020-11-29 23:56:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:56:20,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-11-29 23:56:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:20,164 INFO L225 Difference]: With dead ends: 255 [2020-11-29 23:56:20,164 INFO L226 Difference]: Without dead ends: 74 [2020-11-29 23:56:20,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:56:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-29 23:56:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-29 23:56:20,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 23:56:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-11-29 23:56:20,170 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 56 [2020-11-29 23:56:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:20,171 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-11-29 23:56:20,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:56:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-11-29 23:56:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-29 23:56:20,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:20,172 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:20,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 23:56:20,172 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:20,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:20,172 INFO L82 PathProgramCache]: Analyzing trace with hash -408520283, now seen corresponding path program 1 times [2020-11-29 23:56:20,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:20,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493037557] [2020-11-29 23:56:20,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:20,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493037557] [2020-11-29 23:56:20,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897163141] [2020-11-29 23:56:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:20,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 23:56:20,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:20,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:20,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-29 23:56:20,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177050643] [2020-11-29 23:56:20,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:56:20,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:56:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:56:20,504 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 10 states. [2020-11-29 23:56:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:20,725 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2020-11-29 23:56:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:56:20,726 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-11-29 23:56:20,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:20,726 INFO L225 Difference]: With dead ends: 126 [2020-11-29 23:56:20,727 INFO L226 Difference]: Without dead ends: 79 [2020-11-29 23:56:20,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:56:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-29 23:56:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-11-29 23:56:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-29 23:56:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-11-29 23:56:20,734 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 58 [2020-11-29 23:56:20,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:20,734 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-11-29 23:56:20,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:56:20,735 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-11-29 23:56:20,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 23:56:20,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:20,739 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:20,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:20,961 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:20,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:20,961 INFO L82 PathProgramCache]: Analyzing trace with hash -807057443, now seen corresponding path program 1 times [2020-11-29 23:56:20,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:20,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409660848] [2020-11-29 23:56:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:21,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409660848] [2020-11-29 23:56:21,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534453932] [2020-11-29 23:56:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:21,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:56:21,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:21,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:56:21,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-29 23:56:21,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569475837] [2020-11-29 23:56:21,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:56:21,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:56:21,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:56:21,147 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 10 states. [2020-11-29 23:56:21,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:21,218 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-11-29 23:56:21,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:56:21,219 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-11-29 23:56:21,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:21,220 INFO L225 Difference]: With dead ends: 149 [2020-11-29 23:56:21,220 INFO L226 Difference]: Without dead ends: 103 [2020-11-29 23:56:21,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:56:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-29 23:56:21,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2020-11-29 23:56:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-29 23:56:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2020-11-29 23:56:21,226 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 59 [2020-11-29 23:56:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:21,227 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2020-11-29 23:56:21,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:56:21,227 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2020-11-29 23:56:21,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-29 23:56:21,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:21,228 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:21,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 23:56:21,428 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:21,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:21,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2016429986, now seen corresponding path program 2 times [2020-11-29 23:56:21,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:21,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669422930] [2020-11-29 23:56:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:21,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669422930] [2020-11-29 23:56:21,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456952133] [2020-11-29 23:56:21,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:21,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 23:56:21,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:21,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 23:56:21,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-11-29 23:56:21,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:21,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2020-11-29 23:56:21,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996501903] [2020-11-29 23:56:21,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:56:21,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:21,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:56:21,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-11-29 23:56:21,813 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand 7 states. [2020-11-29 23:56:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:21,971 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2020-11-29 23:56:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:56:21,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-11-29 23:56:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:21,972 INFO L225 Difference]: With dead ends: 80 [2020-11-29 23:56:21,972 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:56:21,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-11-29 23:56:21,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:56:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:56:21,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:56:21,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:56:21,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-11-29 23:56:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:21,973 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:56:21,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:56:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:56:21,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:56:22,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:22,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:56:22,668 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 23:56:22,669 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:56:22,669 INFO L274 CegarLoopResult]: For program point L235(lines 235 244) no Hoare annotation was computed. [2020-11-29 23:56:22,669 INFO L274 CegarLoopResult]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2020-11-29 23:56:22,669 INFO L274 CegarLoopResult]: For program point L252(lines 252 256) no Hoare annotation was computed. [2020-11-29 23:56:22,669 INFO L274 CegarLoopResult]: For program point L186(lines 186 203) no Hoare annotation was computed. [2020-11-29 23:56:22,669 INFO L274 CegarLoopResult]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2020-11-29 23:56:22,669 INFO L274 CegarLoopResult]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2020-11-29 23:56:22,669 INFO L274 CegarLoopResult]: For program point L21(lines 21 26) no Hoare annotation was computed. [2020-11-29 23:56:22,669 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2020-11-29 23:56:22,669 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-11-29 23:56:22,670 INFO L274 CegarLoopResult]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2020-11-29 23:56:22,670 INFO L270 CegarLoopResult]: At program point L71(lines 20 73) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~e 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-11-29 23:56:22,670 INFO L270 CegarLoopResult]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-29 23:56:22,670 INFO L270 CegarLoopResult]: At program point L71-2(lines 20 73) the Hoare annotation is: (or (and (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-29 23:56:22,670 INFO L270 CegarLoopResult]: At program point L71-3(lines 20 73) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2020-11-29 23:56:22,670 INFO L274 CegarLoopResult]: For program point L187(lines 187 192) no Hoare annotation was computed. [2020-11-29 23:56:22,670 INFO L274 CegarLoopResult]: For program point L171(lines 171 176) no Hoare annotation was computed. [2020-11-29 23:56:22,670 INFO L270 CegarLoopResult]: At program point L72(lines 16 74) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~e 0) (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-11-29 23:56:22,670 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-11-29 23:56:22,670 INFO L270 CegarLoopResult]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-29 23:56:22,671 INFO L270 CegarLoopResult]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2020-11-29 23:56:22,671 INFO L270 CegarLoopResult]: At program point L72-2(lines 16 74) the Hoare annotation is: (or (= ULTIMATE.start_main_~zero~0 0) (and (= |ULTIMATE.start_base2flt_#res| 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0))) [2020-11-29 23:56:22,671 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-11-29 23:56:22,671 INFO L270 CegarLoopResult]: At program point L72-3(lines 16 74) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (and (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-29 23:56:22,671 INFO L270 CegarLoopResult]: At program point L39-3(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-29 23:56:22,671 INFO L274 CegarLoopResult]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-11-29 23:56:22,671 INFO L270 CegarLoopResult]: At program point L39-5(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-29 23:56:22,671 INFO L274 CegarLoopResult]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2020-11-29 23:56:22,671 INFO L270 CegarLoopResult]: At program point L39-7(lines 29 44) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-29 23:56:22,671 INFO L274 CegarLoopResult]: For program point L238(lines 238 242) no Hoare annotation was computed. [2020-11-29 23:56:22,671 INFO L274 CegarLoopResult]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2020-11-29 23:56:22,672 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-29 23:56:22,672 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:56:22,672 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-29 23:56:22,672 INFO L270 CegarLoopResult]: At program point L208(lines 149 210) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0) (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0))) [2020-11-29 23:56:22,672 INFO L274 CegarLoopResult]: For program point L27(lines 27 67) no Hoare annotation was computed. [2020-11-29 23:56:22,672 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2020-11-29 23:56:22,672 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2020-11-29 23:56:22,672 INFO L274 CegarLoopResult]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2020-11-29 23:56:22,672 INFO L270 CegarLoopResult]: At program point L209(lines 139 211) the Hoare annotation is: (or (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= |ULTIMATE.start_mulflt_#res| 0)) (and (= ULTIMATE.start_main_~sb~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sb~0 1) 0)) [2020-11-29 23:56:22,673 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:56:22,673 INFO L274 CegarLoopResult]: For program point L177(lines 177 182) no Hoare annotation was computed. [2020-11-29 23:56:22,673 INFO L274 CegarLoopResult]: For program point L195(lines 195 200) no Hoare annotation was computed. [2020-11-29 23:56:22,673 INFO L274 CegarLoopResult]: For program point L30(lines 29 44) no Hoare annotation was computed. [2020-11-29 23:56:22,673 INFO L274 CegarLoopResult]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2020-11-29 23:56:22,673 INFO L274 CegarLoopResult]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2020-11-29 23:56:22,673 INFO L274 CegarLoopResult]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2020-11-29 23:56:22,674 INFO L270 CegarLoopResult]: At program point L65(lines 27 67) the Hoare annotation is: false [2020-11-29 23:56:22,674 INFO L270 CegarLoopResult]: At program point L65-1(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-29 23:56:22,674 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:56:22,674 INFO L270 CegarLoopResult]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-29 23:56:22,674 INFO L270 CegarLoopResult]: At program point L65-3(lines 27 67) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-29 23:56:22,675 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 23:56:22,675 INFO L270 CegarLoopResult]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2020-11-29 23:56:22,675 INFO L270 CegarLoopResult]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2020-11-29 23:56:22,675 INFO L270 CegarLoopResult]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-11-29 23:56:22,675 INFO L270 CegarLoopResult]: At program point L49-11(lines 49 64) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-11-29 23:56:22,675 INFO L274 CegarLoopResult]: For program point L248(lines 248 264) no Hoare annotation was computed. [2020-11-29 23:56:22,675 INFO L277 CegarLoopResult]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2020-11-29 23:56:22,675 INFO L274 CegarLoopResult]: For program point L50(lines 49 64) no Hoare annotation was computed. [2020-11-29 23:56:22,676 INFO L274 CegarLoopResult]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2020-11-29 23:56:22,676 INFO L274 CegarLoopResult]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2020-11-29 23:56:22,676 INFO L274 CegarLoopResult]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2020-11-29 23:56:22,677 INFO L274 CegarLoopResult]: For program point L249(lines 249 258) no Hoare annotation was computed. [2020-11-29 23:56:22,677 INFO L274 CegarLoopResult]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2020-11-29 23:56:22,677 INFO L274 CegarLoopResult]: For program point L150(lines 150 156) no Hoare annotation was computed. [2020-11-29 23:56:22,677 INFO L274 CegarLoopResult]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2020-11-29 23:56:22,677 INFO L274 CegarLoopResult]: For program point L51(lines 49 64) no Hoare annotation was computed. [2020-11-29 23:56:22,677 INFO L274 CegarLoopResult]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2020-11-29 23:56:22,677 INFO L274 CegarLoopResult]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2020-11-29 23:56:22,677 INFO L274 CegarLoopResult]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2020-11-29 23:56:22,678 INFO L277 CegarLoopResult]: At program point L266(lines 212 268) the Hoare annotation is: true [2020-11-29 23:56:22,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:56:22 BoogieIcfgContainer [2020-11-29 23:56:22,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:56:22,723 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:56:22,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:56:22,724 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:56:22,724 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:10" (3/4) ... [2020-11-29 23:56:22,727 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:56:22,760 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 23:56:22,760 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-29 23:56:22,761 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:56:22,762 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:56:22,786 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 [2020-11-29 23:56:22,787 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: zero == 0 || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) [2020-11-29 23:56:22,788 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((a == 0 && zero % 4294967296 <= 0) || (\result == 0 && __retres4 == 0)) || zero == 0 [2020-11-29 23:56:22,789 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 [2020-11-29 23:56:22,842 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7bf84534-ece5-487a-9247-61b10cfdaa92/bin/uautomizer/witness.graphml [2020-11-29 23:56:22,842 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:56:22,844 INFO L168 Benchmark]: Toolchain (without parser) took 13801.40 ms. Allocated memory was 88.1 MB in the beginning and 207.6 MB in the end (delta: 119.5 MB). Free memory was 57.0 MB in the beginning and 132.7 MB in the end (delta: -75.8 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:22,844 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:56:22,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.24 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 56.7 MB in the beginning and 92.9 MB in the end (delta: -36.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:22,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.52 ms. Allocated memory is still 117.4 MB. Free memory was 92.9 MB in the beginning and 90.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:22,846 INFO L168 Benchmark]: Boogie Preprocessor took 38.27 ms. Allocated memory is still 117.4 MB. Free memory was 90.8 MB in the beginning and 89.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:22,846 INFO L168 Benchmark]: RCFGBuilder took 819.38 ms. Allocated memory is still 117.4 MB. Free memory was 89.3 MB in the beginning and 61.4 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:22,847 INFO L168 Benchmark]: TraceAbstraction took 12428.64 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 61.3 MB in the beginning and 138.0 MB in the end (delta: -76.7 MB). Peak memory consumption was 69.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:22,847 INFO L168 Benchmark]: Witness Printer took 118.86 ms. Allocated memory is still 207.6 MB. Free memory was 138.0 MB in the beginning and 132.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:22,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.24 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 56.7 MB in the beginning and 92.9 MB in the end (delta: -36.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.52 ms. Allocated memory is still 117.4 MB. Free memory was 92.9 MB in the beginning and 90.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.27 ms. Allocated memory is still 117.4 MB. Free memory was 90.8 MB in the beginning and 89.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 819.38 ms. Allocated memory is still 117.4 MB. Free memory was 89.3 MB in the beginning and 61.4 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12428.64 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 61.3 MB in the beginning and 138.0 MB in the end (delta: -76.7 MB). Peak memory consumption was 69.0 MB. Max. memory is 16.1 GB. * Witness Printer took 118.86 ms. Allocated memory is still 207.6 MB. Free memory was 138.0 MB in the beginning and 132.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (zero % 4294967296 <= 0 && __retres4 == 0) || zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((a == 0 && zero % 4294967296 <= 0) || (\result == 0 && __retres4 == 0)) || zero == 0 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((sb == 1 && tmp == 1) || sb + 1 <= 0) || (__retres10 == 0 && zero % 4294967296 <= 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (e == 0 && __retres4 == 0) && m == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 248]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((a == 0 && zero % 4294967296 <= 0) || zero == 0) || __retres4 == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.8s, OverallIterations: 23, TraceHistogramMax: 7, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2053 SDtfs, 1005 SDslu, 4873 SDs, 0 SdLazy, 1760 SolverSat, 157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 885 GetRequests, 726 SyntacticMatches, 16 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 447 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 68 NumberOfFragments, 201 HoareAnnotationTreeSize, 24 FomulaSimplifications, 17454 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1714 NumberOfCodeBlocks, 1654 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1675 ConstructedInterpolants, 0 QuantifiedInterpolants, 169320 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2685 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 39 InterpolantComputations, 12 PerfectInterpolantSequences, 211/866 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...