./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.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_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 6eb545a456a66b29ef54dda1fc01800b021f2fd2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:28:21,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:28:21,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:28:21,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:28:21,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:28:21,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:28:21,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:28:21,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:28:21,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:28:21,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:28:21,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:28:21,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:28:21,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:28:21,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:28:21,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:28:21,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:28:21,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:28:21,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:28:21,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:28:21,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:28:21,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:28:21,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:28:21,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:28:21,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:28:21,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:28:21,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:28:21,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:28:21,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:28:21,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:28:21,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:28:21,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:28:21,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:28:21,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:28:21,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:28:21,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:28:21,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:28:21,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:28:21,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:28:21,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:28:21,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:28:21,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:28:21,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:28:21,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:28:21,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:28:21,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:28:21,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:28:21,739 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:28:21,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:28:21,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:28:21,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:28:21,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:28:21,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:28:21,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:28:21,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:28:21,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:28:21,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:28:21,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:28:21,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:28:21,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:28:21,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:28:21,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:28:21,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:28:21,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:28:21,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:28:21,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:28:21,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:28:21,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:28:21,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:28:21,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:28:21,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:28:21,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:28:21,745 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_448eb7ca-74c1-48dc-833a-74faff333a98/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eb545a456a66b29ef54dda1fc01800b021f2fd2 [2020-11-30 01:28:21,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:28:22,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:28:22,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:28:22,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:28:22,007 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:28:22,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2020-11-30 01:28:22,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/data/737bfca66/b3e0cd0040be430892a180e7f1bed7ac/FLAGf95f958d1 [2020-11-30 01:28:22,515 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:28:22,516 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2020-11-30 01:28:22,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/data/737bfca66/b3e0cd0040be430892a180e7f1bed7ac/FLAGf95f958d1 [2020-11-30 01:28:22,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/data/737bfca66/b3e0cd0040be430892a180e7f1bed7ac [2020-11-30 01:28:22,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:28:22,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:28:22,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:28:22,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:28:22,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:28:22,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:28:22" (1/1) ... [2020-11-30 01:28:22,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c10ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:22, skipping insertion in model container [2020-11-30 01:28:22,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:28:22" (1/1) ... [2020-11-30 01:28:22,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:28:22,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:28:23,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:28:23,217 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:28:23,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:28:23,253 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:28:23,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23 WrapperNode [2020-11-30 01:28:23,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:28:23,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:28:23,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:28:23,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:28:23,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:28:23,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:28:23,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:28:23,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:28:23,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:28:23,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:28:23,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:28:23,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:28:23,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:28:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:28:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:28:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:28:23,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:28:23,786 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:28:23,786 INFO L298 CfgBuilder]: Removed 41 assume(true) statements. [2020-11-30 01:28:23,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:23 BoogieIcfgContainer [2020-11-30 01:28:23,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:28:23,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:28:23,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:28:23,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:28:23,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:28:22" (1/3) ... [2020-11-30 01:28:23,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b77ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:28:23, skipping insertion in model container [2020-11-30 01:28:23,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (2/3) ... [2020-11-30 01:28:23,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b77ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:28:23, skipping insertion in model container [2020-11-30 01:28:23,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:23" (3/3) ... [2020-11-30 01:28:23,800 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2020-11-30 01:28:23,812 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:28:23,816 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 01:28:23,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 01:28:23,850 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:28:23,850 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:28:23,850 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:28:23,850 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:28:23,851 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:28:23,851 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:28:23,851 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:28:23,851 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:28:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-30 01:28:23,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:28:23,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:23,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:23,872 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:23,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:23,878 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-11-30 01:28:23,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:23,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510358036] [2020-11-30 01:28:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:24,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510358036] [2020-11-30 01:28:24,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:24,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:28:24,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455829539] [2020-11-30 01:28:24,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:28:24,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:24,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:28:24,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:28:24,119 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-11-30 01:28:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:24,146 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-11-30 01:28:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:28:24,148 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 01:28:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:24,158 INFO L225 Difference]: With dead ends: 85 [2020-11-30 01:28:24,158 INFO L226 Difference]: Without dead ends: 40 [2020-11-30 01:28:24,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:28:24,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-30 01:28:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-30 01:28:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 01:28:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-11-30 01:28:24,196 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2020-11-30 01:28:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:24,197 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-11-30 01:28:24,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:28:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-11-30 01:28:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:28:24,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:24,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:24,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:28:24,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:24,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:24,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-11-30 01:28:24,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:24,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101929784] [2020-11-30 01:28:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:24,231 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:24,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239850204] [2020-11-30 01:28:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:24,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:28:24,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:24,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101929784] [2020-11-30 01:28:24,394 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:24,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239850204] [2020-11-30 01:28:24,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:24,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:24,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070696380] [2020-11-30 01:28:24,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:24,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:24,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:24,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:24,397 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 4 states. [2020-11-30 01:28:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:24,567 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-11-30 01:28:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:24,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 01:28:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:24,571 INFO L225 Difference]: With dead ends: 70 [2020-11-30 01:28:24,571 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 01:28:24,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:24,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 01:28:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-11-30 01:28:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 01:28:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-11-30 01:28:24,582 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 13 [2020-11-30 01:28:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:24,582 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-11-30 01:28:24,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:24,583 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-11-30 01:28:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:28:24,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:24,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:24,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 01:28:24,799 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1454273793, now seen corresponding path program 1 times [2020-11-30 01:28:24,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:24,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750888212] [2020-11-30 01:28:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:24,836 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:24,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471096311] [2020-11-30 01:28:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:24,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 01:28:24,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:24,977 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:28:24,977 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:25,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750888212] [2020-11-30 01:28:25,037 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:25,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471096311] [2020-11-30 01:28:25,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:25,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:28:25,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899067118] [2020-11-30 01:28:25,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:28:25,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:25,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:28:25,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:28:25,039 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 6 states. [2020-11-30 01:28:25,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:25,289 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-11-30 01:28:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:28:25,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 01:28:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:25,292 INFO L225 Difference]: With dead ends: 83 [2020-11-30 01:28:25,292 INFO L226 Difference]: Without dead ends: 81 [2020-11-30 01:28:25,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:28:25,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-30 01:28:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 61. [2020-11-30 01:28:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-30 01:28:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-11-30 01:28:25,314 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 15 [2020-11-30 01:28:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:25,314 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-11-30 01:28:25,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:28:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-11-30 01:28:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:28:25,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:25,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:25,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:25,535 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:25,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1692931460, now seen corresponding path program 1 times [2020-11-30 01:28:25,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:25,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303369400] [2020-11-30 01:28:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:25,552 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:25,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607418405] [2020-11-30 01:28:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:25,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 01:28:25,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:25,633 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:28:25,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:25,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303369400] [2020-11-30 01:28:25,693 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:25,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607418405] [2020-11-30 01:28:25,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:25,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:28:25,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356204054] [2020-11-30 01:28:25,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:28:25,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:25,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:28:25,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:28:25,695 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 6 states. [2020-11-30 01:28:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:25,889 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-11-30 01:28:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:28:25,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-30 01:28:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:25,891 INFO L225 Difference]: With dead ends: 94 [2020-11-30 01:28:25,891 INFO L226 Difference]: Without dead ends: 86 [2020-11-30 01:28:25,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:28:25,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-30 01:28:25,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2020-11-30 01:28:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 01:28:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-11-30 01:28:25,908 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 17 [2020-11-30 01:28:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:25,908 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-11-30 01:28:25,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:28:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-11-30 01:28:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 01:28:25,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:25,910 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] [2020-11-30 01:28:26,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:26,111 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:26,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1673934348, now seen corresponding path program 1 times [2020-11-30 01:28:26,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:26,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21598494] [2020-11-30 01:28:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:26,126 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:26,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480376392] [2020-11-30 01:28:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:26,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:28:26,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:26,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21598494] [2020-11-30 01:28:26,195 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:26,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480376392] [2020-11-30 01:28:26,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:26,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:26,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801060071] [2020-11-30 01:28:26,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:26,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:26,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:26,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:26,197 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 4 states. [2020-11-30 01:28:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:26,335 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-11-30 01:28:26,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:26,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-30 01:28:26,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:26,337 INFO L225 Difference]: With dead ends: 74 [2020-11-30 01:28:26,337 INFO L226 Difference]: Without dead ends: 72 [2020-11-30 01:28:26,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-30 01:28:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-11-30 01:28:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 01:28:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2020-11-30 01:28:26,351 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 20 [2020-11-30 01:28:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:26,352 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2020-11-30 01:28:26,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2020-11-30 01:28:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:28:26,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:26,356 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] [2020-11-30 01:28:26,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:26,573 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:26,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:26,573 INFO L82 PathProgramCache]: Analyzing trace with hash -350771232, now seen corresponding path program 1 times [2020-11-30 01:28:26,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:26,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757169084] [2020-11-30 01:28:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:26,590 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:26,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736975907] [2020-11-30 01:28:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:26,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:28:26,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:28:26,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757169084] [2020-11-30 01:28:26,701 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:26,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736975907] [2020-11-30 01:28:26,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:26,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-30 01:28:26,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660108248] [2020-11-30 01:28:26,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:26,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:26,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:26,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:26,703 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 4 states. [2020-11-30 01:28:26,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:26,801 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-11-30 01:28:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:26,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-30 01:28:26,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:26,803 INFO L225 Difference]: With dead ends: 80 [2020-11-30 01:28:26,803 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 01:28:26,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:26,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 01:28:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-11-30 01:28:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-30 01:28:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2020-11-30 01:28:26,816 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 21 [2020-11-30 01:28:26,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:26,816 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2020-11-30 01:28:26,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:26,817 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2020-11-30 01:28:26,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:28:26,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:26,818 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] [2020-11-30 01:28:27,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 01:28:27,029 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:27,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:27,030 INFO L82 PathProgramCache]: Analyzing trace with hash -350711650, now seen corresponding path program 1 times [2020-11-30 01:28:27,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:27,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585031307] [2020-11-30 01:28:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:27,048 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:27,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442039829] [2020-11-30 01:28:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:27,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:28:27,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:28:27,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585031307] [2020-11-30 01:28:27,167 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:27,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442039829] [2020-11-30 01:28:27,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:27,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-30 01:28:27,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637852421] [2020-11-30 01:28:27,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:27,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:27,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:27,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:27,169 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 4 states. [2020-11-30 01:28:27,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:27,264 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-11-30 01:28:27,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:27,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-30 01:28:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:27,266 INFO L225 Difference]: With dead ends: 88 [2020-11-30 01:28:27,266 INFO L226 Difference]: Without dead ends: 84 [2020-11-30 01:28:27,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-30 01:28:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2020-11-30 01:28:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 01:28:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-11-30 01:28:27,279 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2020-11-30 01:28:27,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:27,279 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-11-30 01:28:27,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-11-30 01:28:27,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:28:27,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:27,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:27,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:27,490 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:27,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1962016375, now seen corresponding path program 1 times [2020-11-30 01:28:27,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:27,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262029250] [2020-11-30 01:28:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:27,503 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:27,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333819466] [2020-11-30 01:28:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:27,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:28:27,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:27,603 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:28:27,603 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:27,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262029250] [2020-11-30 01:28:27,662 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:27,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333819466] [2020-11-30 01:28:27,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:27,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:28:27,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105273323] [2020-11-30 01:28:27,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:28:27,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:27,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:28:27,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:28:27,664 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 6 states. [2020-11-30 01:28:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:27,936 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-11-30 01:28:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:28:27,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-30 01:28:27,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:27,937 INFO L225 Difference]: With dead ends: 80 [2020-11-30 01:28:27,938 INFO L226 Difference]: Without dead ends: 72 [2020-11-30 01:28:27,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:28:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-30 01:28:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-11-30 01:28:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-30 01:28:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-11-30 01:28:27,956 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2020-11-30 01:28:27,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:27,958 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-11-30 01:28:27,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:28:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-11-30 01:28:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 01:28:27,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:27,960 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:28,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:28,187 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:28,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:28,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2083517661, now seen corresponding path program 1 times [2020-11-30 01:28:28,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:28,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22744293] [2020-11-30 01:28:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:28,203 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:28,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167898790] [2020-11-30 01:28:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:28,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-30 01:28:28,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:28,288 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:28:28,288 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:28,324 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:28:28,324 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:28,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22744293] [2020-11-30 01:28:28,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:28,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167898790] [2020-11-30 01:28:28,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:28,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-30 01:28:28,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592530228] [2020-11-30 01:28:28,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:28:28,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:28,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:28:28,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:28:28,465 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 9 states. [2020-11-30 01:28:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:29,142 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-11-30 01:28:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:28:29,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-30 01:28:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:29,144 INFO L225 Difference]: With dead ends: 105 [2020-11-30 01:28:29,144 INFO L226 Difference]: Without dead ends: 103 [2020-11-30 01:28:29,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:28:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-30 01:28:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2020-11-30 01:28:29,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 01:28:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-11-30 01:28:29,161 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2020-11-30 01:28:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:29,162 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-11-30 01:28:29,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:28:29,162 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-11-30 01:28:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:28:29,165 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:29,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:29,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-30 01:28:29,391 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:29,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:29,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1614871324, now seen corresponding path program 1 times [2020-11-30 01:28:29,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:29,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631157171] [2020-11-30 01:28:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:29,403 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:29,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454979748] [2020-11-30 01:28:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:29,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-30 01:28:29,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:29,479 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:28:29,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:29,520 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:28:29,521 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:29,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631157171] [2020-11-30 01:28:29,690 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:29,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454979748] [2020-11-30 01:28:29,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:29,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-30 01:28:29,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265837204] [2020-11-30 01:28:29,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:28:29,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:29,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:28:29,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:28:29,692 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 10 states. [2020-11-30 01:28:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:30,149 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2020-11-30 01:28:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:28:30,150 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-11-30 01:28:30,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:30,151 INFO L225 Difference]: With dead ends: 116 [2020-11-30 01:28:30,151 INFO L226 Difference]: Without dead ends: 104 [2020-11-30 01:28:30,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:28:30,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-30 01:28:30,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-11-30 01:28:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-30 01:28:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-11-30 01:28:30,182 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2020-11-30 01:28:30,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:30,182 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-11-30 01:28:30,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:28:30,183 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-11-30 01:28:30,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 01:28:30,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:30,186 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:30,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:30,411 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:30,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:30,412 INFO L82 PathProgramCache]: Analyzing trace with hash -389708480, now seen corresponding path program 1 times [2020-11-30 01:28:30,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:30,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373376896] [2020-11-30 01:28:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:30,423 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:30,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654895271] [2020-11-30 01:28:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:30,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:28:30,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:30,531 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:28:30,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:30,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373376896] [2020-11-30 01:28:30,593 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:30,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654895271] [2020-11-30 01:28:30,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:30,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 01:28:30,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358967468] [2020-11-30 01:28:30,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:28:30,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:30,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:28:30,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:30,595 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 7 states. [2020-11-30 01:28:30,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:30,806 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-11-30 01:28:30,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:28:30,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-11-30 01:28:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:30,808 INFO L225 Difference]: With dead ends: 128 [2020-11-30 01:28:30,808 INFO L226 Difference]: Without dead ends: 98 [2020-11-30 01:28:30,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:28:30,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-30 01:28:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-11-30 01:28:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-30 01:28:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-11-30 01:28:30,822 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 29 [2020-11-30 01:28:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:30,823 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-11-30 01:28:30,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:28:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-11-30 01:28:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 01:28:30,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:30,824 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:31,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:31,039 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:31,040 INFO L82 PathProgramCache]: Analyzing trace with hash -131602624, now seen corresponding path program 2 times [2020-11-30 01:28:31,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:31,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223794940] [2020-11-30 01:28:31,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:31,047 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:31,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861804894] [2020-11-30 01:28:31,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:31,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:28:31,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:28:31,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:28:31,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:31,173 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:28:31,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:31,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223794940] [2020-11-30 01:28:31,234 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:31,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861804894] [2020-11-30 01:28:31,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:31,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 01:28:31,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760873123] [2020-11-30 01:28:31,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:28:31,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:31,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:28:31,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:31,236 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-11-30 01:28:31,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:31,413 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2020-11-30 01:28:31,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:28:31,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-11-30 01:28:31,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:31,416 INFO L225 Difference]: With dead ends: 100 [2020-11-30 01:28:31,416 INFO L226 Difference]: Without dead ends: 80 [2020-11-30 01:28:31,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:28:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-30 01:28:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-11-30 01:28:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-30 01:28:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-11-30 01:28:31,431 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 29 [2020-11-30 01:28:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:31,432 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-11-30 01:28:31,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:28:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-11-30 01:28:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 01:28:31,436 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:31,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:31,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-30 01:28:31,651 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:31,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:31,652 INFO L82 PathProgramCache]: Analyzing trace with hash -904765627, now seen corresponding path program 2 times [2020-11-30 01:28:31,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:31,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581659446] [2020-11-30 01:28:31,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:31,669 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:31,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236468618] [2020-11-30 01:28:31,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:31,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:28:31,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:28:31,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 01:28:31,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:31,784 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:28:31,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:31,811 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:28:31,811 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:31,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581659446] [2020-11-30 01:28:31,873 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:31,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236468618] [2020-11-30 01:28:31,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:31,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:28:31,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140658380] [2020-11-30 01:28:31,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:28:31,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:31,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:28:31,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:28:31,875 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 8 states. [2020-11-30 01:28:32,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:32,116 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-11-30 01:28:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:28:32,116 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-11-30 01:28:32,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:32,117 INFO L225 Difference]: With dead ends: 84 [2020-11-30 01:28:32,117 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 01:28:32,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:28:32,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 01:28:32,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-30 01:28:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-30 01:28:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-11-30 01:28:32,125 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 31 [2020-11-30 01:28:32,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:32,125 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-11-30 01:28:32,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:28:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-11-30 01:28:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 01:28:32,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:32,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:32,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-30 01:28:32,327 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:32,328 INFO L82 PathProgramCache]: Analyzing trace with hash 568366148, now seen corresponding path program 2 times [2020-11-30 01:28:32,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:32,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840979939] [2020-11-30 01:28:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:32,338 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:32,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766430059] [2020-11-30 01:28:32,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/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 [2020-11-30 01:28:32,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:28:32,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:28:32,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:28:32,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:32,440 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:28:32,440 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:32,472 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:28:32,472 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:32,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840979939] [2020-11-30 01:28:32,567 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:32,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766430059] [2020-11-30 01:28:32,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:32,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-30 01:28:32,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545173075] [2020-11-30 01:28:32,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:28:32,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:32,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:28:32,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:28:32,570 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 9 states. [2020-11-30 01:28:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:32,769 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-11-30 01:28:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:28:32,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-11-30 01:28:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:32,770 INFO L225 Difference]: With dead ends: 66 [2020-11-30 01:28:32,770 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:28:32,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:28:32,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:28:32,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:28:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:28:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:28:32,772 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-11-30 01:28:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:32,772 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:28:32,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:28:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:28:32,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:28:32,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-30 01:28:32,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:28:33,432 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-11-30 01:28:33,571 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-11-30 01:28:33,849 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-11-30 01:28:34,009 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-11-30 01:28:34,275 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-30 01:28:34,503 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-11-30 01:28:34,641 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-11-30 01:28:34,643 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2020-11-30 01:28:34,644 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:28:34,644 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-30 01:28:34,644 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~r~0 0)) (.cse3 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)))) (.cse5 (<= 1 ULTIMATE.start_main_~x~0)) (.cse7 (<= ULTIMATE.start_main_~y~0 2)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse10 (<= 1 ULTIMATE.start_main_~b~0))) (or (and (< 0 ULTIMATE.start_main_~b~0) .cse0 .cse1 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (and (<= ULTIMATE.start_main_~a~0 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse8 .cse6 .cse9 .cse10 .cse7) (and (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse1 (< 0 ULTIMATE.start_main_~a~0) .cse2 .cse4 .cse8 .cse6 (= (+ ULTIMATE.start_main_~r~0 1) 0) .cse9 .cse10))) [2020-11-30 01:28:34,644 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-30 01:28:34,645 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~r~0 0)) (.cse10 (<= ULTIMATE.start_main_~y~0 2)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)))) (.cse4 (= ULTIMATE.start_main_~s~0 1)) (.cse5 (<= 1 ULTIMATE.start_main_~x~0)) (.cse6 (= ULTIMATE.start_main_~q~0 0)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse9 (<= 1 ULTIMATE.start_main_~b~0))) (or (and (<= ULTIMATE.start_main_~a~0 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and (< 0 ULTIMATE.start_main_~b~0) .cse0 .cse1 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse2 .cse3 .cse4 .cse5 .cse7 .cse10 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (and (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (<= ULTIMATE.start_main_~x~0 2) .cse1 (< 0 ULTIMATE.start_main_~a~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9))) [2020-11-30 01:28:34,645 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-30 01:28:34,645 INFO L270 CegarLoopResult]: At program point L11-5(lines 40 41) the Hoare annotation is: (let ((.cse9 (= ULTIMATE.start_main_~r~0 0)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)))) (.cse3 (= ULTIMATE.start_main_~s~0 1)) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0)) (.cse10 (<= ULTIMATE.start_main_~y~0 2))) (or (and (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (<= ULTIMATE.start_main_~x~0 2) .cse0 (< 0 ULTIMATE.start_main_~a~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and (< 0 ULTIMATE.start_main_~b~0) .cse9 .cse0 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse1 .cse2 .cse3 .cse4 .cse6 .cse10 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (and (<= ULTIMATE.start_main_~a~0 2) .cse9 .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse10))) [2020-11-30 01:28:34,646 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-30 01:28:34,646 INFO L270 CegarLoopResult]: At program point L11-7(lines 10 16) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_main_~s~0 1)) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0))) (or (and (= ULTIMATE.start_main_~b~0 .cse0) .cse1 (= ULTIMATE.start_main_~r~0 0) .cse2 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse3 .cse4 .cse5 .cse6 (<= ULTIMATE.start_main_~y~0 2) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (and .cse1 .cse2 .cse4 .cse3 (= ULTIMATE.start_main_~a~0 .cse0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse6 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2020-11-30 01:28:34,646 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-30 01:28:34,646 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: (let ((.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse8 (= ULTIMATE.start_main_~r~0 0)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse1 (= ULTIMATE.start_main_~s~0 1)) (.cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse8 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7) (and (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) .cse0 .cse8 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse2 .cse1 .cse6 .cse5 (<= ULTIMATE.start_main_~y~0 2) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))))) [2020-11-30 01:28:34,646 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-30 01:28:34,646 INFO L270 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~s~0 1)) (.cse1 (<= 1 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= 1 ULTIMATE.start_main_~y~0) .cse0 .cse1 (= ULTIMATE.start_main_~q~0 0) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (not (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)) (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) .cse0 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse1 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (<= ULTIMATE.start_main_~y~0 2) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))))) [2020-11-30 01:28:34,646 INFO L274 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L277 CegarLoopResult]: At program point L11-13(lines 10 16) the Hoare annotation is: true [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2020-11-30 01:28:34,647 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point L8-4(line 8) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point L8-6(line 8) no Hoare annotation was computed. [2020-11-30 01:28:34,648 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:28:34,649 INFO L277 CegarLoopResult]: At program point L58(lines 18 59) the Hoare annotation is: true [2020-11-30 01:28:34,649 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 01:28:34,649 INFO L274 CegarLoopResult]: For program point L43(lines 43 51) no Hoare annotation was computed. [2020-11-30 01:28:34,649 INFO L270 CegarLoopResult]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~r~0 0)) (.cse2 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)))) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse9 (<= ULTIMATE.start_main_~y~0 2)) (.cse10 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~s~0 1)) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0))) (or (and (<= ULTIMATE.start_main_~a~0 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (< 0 ULTIMATE.start_main_~b~0) .cse0 .cse10 .cse2 .cse1 (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse3 .cse4 .cse6 .cse9 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (and (<= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 2) (= (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse10 (< 0 ULTIMATE.start_main_~a~0) .cse1 .cse3 .cse5 .cse6 (= (+ ULTIMATE.start_main_~r~0 1) 0) .cse7 .cse8))) [2020-11-30 01:28:34,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:28:34 BoogieIcfgContainer [2020-11-30 01:28:34,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:28:34,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:28:34,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:28:34,677 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:28:34,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:23" (3/4) ... [2020-11-30 01:28:34,681 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:28:34,692 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2020-11-30 01:28:34,692 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:28:34,692 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:28:34,693 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:28:34,743 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_448eb7ca-74c1-48dc-833a-74faff333a98/bin/uautomizer/witness.graphml [2020-11-30 01:28:34,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:28:34,744 INFO L168 Benchmark]: Toolchain (without parser) took 11803.39 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 60.7 MB in the beginning and 45.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:34,745 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 49.5 MB in the beginning and 49.5 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:34,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.99 ms. Allocated memory is still 90.2 MB. Free memory was 60.7 MB in the beginning and 68.2 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:34,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.67 ms. Allocated memory is still 90.2 MB. Free memory was 68.2 MB in the beginning and 66.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:34,746 INFO L168 Benchmark]: Boogie Preprocessor took 24.02 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 65.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:34,746 INFO L168 Benchmark]: RCFGBuilder took 471.63 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 48.5 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:34,747 INFO L168 Benchmark]: TraceAbstraction took 10886.91 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 48.1 MB in the beginning and 49.8 MB in the end (delta: -1.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:34,747 INFO L168 Benchmark]: Witness Printer took 66.39 ms. Allocated memory is still 113.2 MB. Free memory was 49.8 MB in the beginning and 45.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:34,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 49.5 MB in the beginning and 49.5 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.99 ms. Allocated memory is still 90.2 MB. Free memory was 60.7 MB in the beginning and 68.2 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.67 ms. Allocated memory is still 90.2 MB. Free memory was 68.2 MB in the beginning and 66.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.02 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 65.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 471.63 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 48.5 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10886.91 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 48.1 MB in the beginning and 49.8 MB in the end (delta: -1.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. * Witness Printer took 66.39 ms. Allocated memory is still 113.2 MB. Free memory was 49.8 MB in the beginning and 45.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((0 < b && r == 0) && 1 <= cond) && q + 1 == 0) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && cond == 1) && y <= 2) && y == b + x) || (((((((((((a <= 2 && r == 0) && 1 <= cond) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) && y <= 2)) || ((((((((((a + b <= 2 && a + y == x) && 1 <= cond) && 0 < a) && p == 1) && s == 1) && q == 0) && cond == 1) && r + 1 == 0) && b == y) && 1 <= b) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((1 <= y && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) || (((((((((!(y == x) && x <= y) && a == p * x + r * y) && s == 1) && q + 1 == 0) && 1 <= x) && cond == 1) && b == a) && y <= 2) && y == b + x) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a + b <= 2 && x <= 2) && 1 <= cond) && 0 < a) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) || ((((((((((0 < b && r == 0) && 1 <= cond) && q + 1 == 0) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && cond == 1) && y <= 2) && y == b + x)) || (((((((((((a <= 2 && r == 0) && 1 <= cond) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) && y <= 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((1 <= y && s == 1) && p == 1) && 1 <= x) && q == 0) && cond == 1) && b == a) && b == y) || ((((((((1 <= y && a == x) && r == 0) && s == 1) && p == 1) && 1 <= x) && q == 0) && cond == 1) && b == y)) || ((((((((((b == p * x + r * y && 1 <= y) && r == 0) && 1 == cond) && q + 1 == 0) && p == 1) && s == 1) && b == a) && cond == 1) && y <= 2) && y == b + x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((a <= 2 && r == 0) && 1 == cond) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) && y <= 2) || ((((((((((0 < b && r == 0) && 1 == cond) && q + 1 == 0) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && cond == 1) && y <= 2) && y == b + x)) || (((((((((((a + b <= 2 && x <= 2) && 1 == cond) && 0 < a) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((a <= 2 && r == 0) && p == 1) && a == p * x + r * y) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) && y <= 2) || ((((((((((0 < b && r == 0) && 1 <= cond) && a == p * x + r * y) && p == 1) && q + 1 == 0) && s == 1) && 1 <= x) && cond == 1) && y <= 2) && y == b + x)) || ((((((((((a + b <= 2 && a + y == x) && 1 <= cond) && 0 < a) && p == 1) && s == 1) && q == 0) && cond == 1) && r + 1 == 0) && b == y) && 1 <= b) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((b == p * x + r * y && 1 <= y) && r == 0) && 1 == cond) && q + 1 == 0) && p == 1) && s == 1) && b == a) && cond == 1) && y <= 2) && y == b + x) || (((((((((1 <= y && 1 == cond) && s == 1) && p == 1) && a == p * x + r * y) && 1 <= x) && q == 0) && cond == 1) && b == a) && b == y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.1s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 419 SDtfs, 821 SDslu, 770 SDs, 0 SdLazy, 895 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 228 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=10, 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, 14 MinimizatonAttempts, 112 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 30 NumberOfFragments, 763 HoareAnnotationTreeSize, 9 FomulaSimplifications, 642 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 450 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 51351 SizeOfPredicates, 100 NumberOfNonLiveVariables, 1374 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 46/74 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...