./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.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_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/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 0f3c6dbfc61bcfa3bb6247579821c45f98d2bd1b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:56:15,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:56:15,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:56:15,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:56:15,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:56:15,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:56:15,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:56:15,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:56:15,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:56:15,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:56:15,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:56:15,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:56:15,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:56:15,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:56:15,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:56:16,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:56:16,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:56:16,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:56:16,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:56:16,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:56:16,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:56:16,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:56:16,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:56:16,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:56:16,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:56:16,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:56:16,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:56:16,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:56:16,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:56:16,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:56:16,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:56:16,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:56:16,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:56:16,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:56:16,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:56:16,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:56:16,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:56:16,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:56:16,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:56:16,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:56:16,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:56:16,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:56:16,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:56:16,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:56:16,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:56:16,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:56:16,117 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:56:16,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:56:16,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:56:16,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:56:16,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:56:16,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:56:16,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:56:16,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:56:16,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:56:16,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:56:16,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:56:16,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:56:16,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:56:16,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:56:16,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:56:16,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:56:16,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:56:16,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:56:16,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:56:16,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:56:16,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:56:16,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:56:16,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:56:16,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:56:16,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:56:16,126 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_a886aa27-1954-4abf-8e77-ed6000870ba6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f3c6dbfc61bcfa3bb6247579821c45f98d2bd1b [2020-11-29 21:56:16,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:56:16,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:56:16,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:56:16,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:56:16,523 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:56:16,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c [2020-11-29 21:56:16,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/data/595a76057/d32d7c1baf8047e49af6e03fe4ac16e1/FLAGe8807bd63 [2020-11-29 21:56:17,194 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:56:17,195 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c [2020-11-29 21:56:17,213 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/data/595a76057/d32d7c1baf8047e49af6e03fe4ac16e1/FLAGe8807bd63 [2020-11-29 21:56:17,531 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/data/595a76057/d32d7c1baf8047e49af6e03fe4ac16e1 [2020-11-29 21:56:17,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:56:17,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:56:17,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:56:17,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:56:17,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:56:17,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e50bcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17, skipping insertion in model container [2020-11-29 21:56:17,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:56:17,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:56:17,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:56:17,830 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:56:17,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:56:17,886 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:56:17,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17 WrapperNode [2020-11-29 21:56:17,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:56:17,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:56:17,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:56:17,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:56:17,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:56:17,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:56:17,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:56:17,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:56:17,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (1/1) ... [2020-11-29 21:56:17,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:56:17,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:56:17,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:56:17,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:56:17,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:56:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:56:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:56:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:56:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:56:18,563 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:56:18,564 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-29 21:56:18,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:56:18 BoogieIcfgContainer [2020-11-29 21:56:18,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:56:18,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:56:18,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:56:18,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:56:18,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:56:17" (1/3) ... [2020-11-29 21:56:18,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279bf60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:56:18, skipping insertion in model container [2020-11-29 21:56:18,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:56:17" (2/3) ... [2020-11-29 21:56:18,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279bf60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:56:18, skipping insertion in model container [2020-11-29 21:56:18,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:56:18" (3/3) ... [2020-11-29 21:56:18,579 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound50.c [2020-11-29 21:56:18,593 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:56:18,599 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 21:56:18,619 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 21:56:18,652 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:56:18,653 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:56:18,653 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:56:18,653 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:56:18,653 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:56:18,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:56:18,653 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:56:18,654 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:56:18,672 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-29 21:56:18,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:56:18,686 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:18,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:18,688 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]=== [2020-11-29 21:56:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:18,695 INFO L82 PathProgramCache]: Analyzing trace with hash 122552587, now seen corresponding path program 1 times [2020-11-29 21:56:18,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:18,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803833340] [2020-11-29 21:56:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:18,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803833340] [2020-11-29 21:56:18,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:56:18,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:56:18,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509425134] [2020-11-29 21:56:18,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:56:18,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:18,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:56:18,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:56:18,902 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-29 21:56:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:18,927 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2020-11-29 21:56:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:56:18,928 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 21:56:18,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:18,939 INFO L225 Difference]: With dead ends: 79 [2020-11-29 21:56:18,939 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 21:56:18,943 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 [2020-11-29 21:56:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 21:56:18,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 21:56:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 21:56:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-11-29 21:56:18,986 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2020-11-29 21:56:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:18,986 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-11-29 21:56:18,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:56:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-11-29 21:56:18,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:56:18,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:18,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:18,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:56:18,989 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]=== [2020-11-29 21:56:18,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:18,990 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-11-29 21:56:18,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:18,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314993296] [2020-11-29 21:56:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:19,016 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:19,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231294146] [2020-11-29 21:56:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:19,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 21:56:19,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:19,223 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:56:19,224 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:19,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314993296] [2020-11-29 21:56:19,311 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:19,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231294146] [2020-11-29 21:56:19,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:56:19,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:56:19,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049955174] [2020-11-29 21:56:19,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:56:19,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:19,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:56:19,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:56:19,315 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2020-11-29 21:56:19,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:19,592 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-11-29 21:56:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:56:19,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-29 21:56:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:19,595 INFO L225 Difference]: With dead ends: 51 [2020-11-29 21:56:19,595 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 21:56:19,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:56:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 21:56:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2020-11-29 21:56:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 21:56:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-29 21:56:19,614 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-11-29 21:56:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:19,614 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-29 21:56:19,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:56:19,616 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-29 21:56:19,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 21:56:19,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:19,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:19,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 21:56:19,843 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]=== [2020-11-29 21:56:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1182912719, now seen corresponding path program 1 times [2020-11-29 21:56:19,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:19,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098309833] [2020-11-29 21:56:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:19,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098309833] [2020-11-29 21:56:19,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:56:19,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:56:19,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618627473] [2020-11-29 21:56:19,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:56:19,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:19,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:56:19,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:56:19,969 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-11-29 21:56:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:20,000 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-11-29 21:56:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:56:20,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 21:56:20,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:20,005 INFO L225 Difference]: With dead ends: 44 [2020-11-29 21:56:20,006 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 21:56:20,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:56:20,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 21:56:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-29 21:56:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 21:56:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-11-29 21:56:20,022 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2020-11-29 21:56:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:20,023 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-11-29 21:56:20,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:56:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-11-29 21:56:20,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:56:20,026 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:20,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:20,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:56:20,027 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]=== [2020-11-29 21:56:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:20,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1985303953, now seen corresponding path program 1 times [2020-11-29 21:56:20,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:20,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771290515] [2020-11-29 21:56:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:20,071 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:20,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591861696] [2020-11-29 21:56:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:20,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 21:56:20,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:20,168 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:56:20,169 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:20,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771290515] [2020-11-29 21:56:20,227 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:20,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591861696] [2020-11-29 21:56:20,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:56:20,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:56:20,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923593163] [2020-11-29 21:56:20,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:56:20,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:20,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:56:20,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:56:20,230 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2020-11-29 21:56:20,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:20,511 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-11-29 21:56:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:56:20,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 21:56:20,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:20,513 INFO L225 Difference]: With dead ends: 74 [2020-11-29 21:56:20,513 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 21:56:20,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:56:20,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 21:56:20,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-11-29 21:56:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 21:56:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-11-29 21:56:20,525 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2020-11-29 21:56:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:20,526 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-11-29 21:56:20,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:56:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-11-29 21:56:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:56:20,527 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:20,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:20,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:20,728 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]=== [2020-11-29 21:56:20,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:20,729 INFO L82 PathProgramCache]: Analyzing trace with hash 290615803, now seen corresponding path program 1 times [2020-11-29 21:56:20,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:20,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027840781] [2020-11-29 21:56:20,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:20,741 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:20,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538877092] [2020-11-29 21:56:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:20,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:56:20,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:20,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027840781] [2020-11-29 21:56:20,828 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:20,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538877092] [2020-11-29 21:56:20,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:56:20,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:56:20,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141195400] [2020-11-29 21:56:20,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:56:20,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:20,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:56:20,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:56:20,831 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2020-11-29 21:56:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:20,989 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2020-11-29 21:56:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:56:20,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 21:56:20,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:20,998 INFO L225 Difference]: With dead ends: 104 [2020-11-29 21:56:20,998 INFO L226 Difference]: Without dead ends: 98 [2020-11-29 21:56:20,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:56:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-29 21:56:21,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2020-11-29 21:56:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-29 21:56:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2020-11-29 21:56:21,022 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 14 [2020-11-29 21:56:21,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:21,023 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2020-11-29 21:56:21,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:56:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2020-11-29 21:56:21,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:56:21,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:21,030 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:21,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:21,243 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]=== [2020-11-29 21:56:21,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:21,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1284273978, now seen corresponding path program 1 times [2020-11-29 21:56:21,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:21,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863244619] [2020-11-29 21:56:21,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:21,258 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:21,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381051303] [2020-11-29 21:56:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:21,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:56:21,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:21,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863244619] [2020-11-29 21:56:21,393 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:21,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381051303] [2020-11-29 21:56:21,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:56:21,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:56:21,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293073162] [2020-11-29 21:56:21,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:56:21,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:21,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:56:21,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:56:21,395 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 5 states. [2020-11-29 21:56:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:21,455 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2020-11-29 21:56:21,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:56:21,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 21:56:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:21,457 INFO L225 Difference]: With dead ends: 121 [2020-11-29 21:56:21,457 INFO L226 Difference]: Without dead ends: 75 [2020-11-29 21:56:21,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:56:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-29 21:56:21,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-29 21:56:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-29 21:56:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2020-11-29 21:56:21,470 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 18 [2020-11-29 21:56:21,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:21,471 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2020-11-29 21:56:21,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:56:21,471 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2020-11-29 21:56:21,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:56:21,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:21,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:21,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:21,695 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]=== [2020-11-29 21:56:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:21,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1766286401, now seen corresponding path program 1 times [2020-11-29 21:56:21,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:21,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052732657] [2020-11-29 21:56:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:21,709 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:21,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077836465] [2020-11-29 21:56:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:21,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 21:56:21,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:21,802 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:56:21,802 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:21,828 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:21,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052732657] [2020-11-29 21:56:21,889 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:21,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077836465] [2020-11-29 21:56:21,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:56:21,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:56:21,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001707348] [2020-11-29 21:56:21,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:56:21,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:21,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:56:21,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:56:21,892 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand 6 states. [2020-11-29 21:56:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:22,130 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2020-11-29 21:56:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:56:22,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-29 21:56:22,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:22,132 INFO L225 Difference]: With dead ends: 82 [2020-11-29 21:56:22,132 INFO L226 Difference]: Without dead ends: 80 [2020-11-29 21:56:22,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:56:22,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-29 21:56:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2020-11-29 21:56:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 21:56:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-11-29 21:56:22,144 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 18 [2020-11-29 21:56:22,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:22,145 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-11-29 21:56:22,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:56:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-11-29 21:56:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 21:56:22,147 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:22,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:22,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 21:56:22,375 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]=== [2020-11-29 21:56:22,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:22,376 INFO L82 PathProgramCache]: Analyzing trace with hash -439927536, now seen corresponding path program 1 times [2020-11-29 21:56:22,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:22,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413203716] [2020-11-29 21:56:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:22,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:22,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995641007] [2020-11-29 21:56:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:22,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 21:56:22,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:22,488 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:56:22,488 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:22,557 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:22,560 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:22,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413203716] [2020-11-29 21:56:22,583 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:22,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995641007] [2020-11-29 21:56:22,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:56:22,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 21:56:22,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589001605] [2020-11-29 21:56:22,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:56:22,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:22,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:56:22,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:56:22,585 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 7 states. [2020-11-29 21:56:23,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:23,091 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2020-11-29 21:56:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:56:23,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-29 21:56:23,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:23,094 INFO L225 Difference]: With dead ends: 139 [2020-11-29 21:56:23,094 INFO L226 Difference]: Without dead ends: 133 [2020-11-29 21:56:23,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:56:23,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-29 21:56:23,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 93. [2020-11-29 21:56:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-29 21:56:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2020-11-29 21:56:23,116 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 24 [2020-11-29 21:56:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:23,117 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2020-11-29 21:56:23,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:56:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2020-11-29 21:56:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 21:56:23,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:23,118 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:23,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:23,348 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]=== [2020-11-29 21:56:23,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:23,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2103248441, now seen corresponding path program 1 times [2020-11-29 21:56:23,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:23,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846102068] [2020-11-29 21:56:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:23,367 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:23,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854686815] [2020-11-29 21:56:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:23,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:56:23,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:23,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846102068] [2020-11-29 21:56:23,502 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:23,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854686815] [2020-11-29 21:56:23,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:56:23,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:56:23,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759263711] [2020-11-29 21:56:23,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:56:23,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:23,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:56:23,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:56:23,504 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand 6 states. [2020-11-29 21:56:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:23,571 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2020-11-29 21:56:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:56:23,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-29 21:56:23,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:23,573 INFO L225 Difference]: With dead ends: 100 [2020-11-29 21:56:23,573 INFO L226 Difference]: Without dead ends: 96 [2020-11-29 21:56:23,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:56:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-29 21:56:23,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-11-29 21:56:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 21:56:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2020-11-29 21:56:23,586 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 24 [2020-11-29 21:56:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:23,586 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2020-11-29 21:56:23,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:56:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2020-11-29 21:56:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 21:56:23,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:23,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:23,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:23,799 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]=== [2020-11-29 21:56:23,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:23,800 INFO L82 PathProgramCache]: Analyzing trace with hash -777084809, now seen corresponding path program 1 times [2020-11-29 21:56:23,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:23,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182665406] [2020-11-29 21:56:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:23,807 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:23,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107677415] [2020-11-29 21:56:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:23,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 21:56:23,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:23,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182665406] [2020-11-29 21:56:23,982 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:23,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107677415] [2020-11-29 21:56:23,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:56:23,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 21:56:23,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790767983] [2020-11-29 21:56:23,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:56:23,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:23,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:56:23,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:56:23,984 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand 7 states. [2020-11-29 21:56:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:24,250 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2020-11-29 21:56:24,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:56:24,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-29 21:56:24,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:24,252 INFO L225 Difference]: With dead ends: 166 [2020-11-29 21:56:24,252 INFO L226 Difference]: Without dead ends: 103 [2020-11-29 21:56:24,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:56:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-29 21:56:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2020-11-29 21:56:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-29 21:56:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2020-11-29 21:56:24,275 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 25 [2020-11-29 21:56:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:24,275 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2020-11-29 21:56:24,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:56:24,275 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2020-11-29 21:56:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 21:56:24,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:24,277 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:24,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 21:56:24,478 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]=== [2020-11-29 21:56:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:24,478 INFO L82 PathProgramCache]: Analyzing trace with hash -187977777, now seen corresponding path program 1 times [2020-11-29 21:56:24,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:24,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653310711] [2020-11-29 21:56:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:24,498 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:24,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539460672] [2020-11-29 21:56:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:24,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:56:24,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:24,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653310711] [2020-11-29 21:56:24,645 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:24,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539460672] [2020-11-29 21:56:24,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:56:24,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:56:24,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105104953] [2020-11-29 21:56:24,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:56:24,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:24,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:56:24,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:56:24,647 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 6 states. [2020-11-29 21:56:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:24,695 INFO L93 Difference]: Finished difference Result 147 states and 173 transitions. [2020-11-29 21:56:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:56:24,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-29 21:56:24,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:24,699 INFO L225 Difference]: With dead ends: 147 [2020-11-29 21:56:24,699 INFO L226 Difference]: Without dead ends: 93 [2020-11-29 21:56:24,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:56:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-29 21:56:24,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-29 21:56:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-29 21:56:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2020-11-29 21:56:24,714 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 28 [2020-11-29 21:56:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:24,714 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2020-11-29 21:56:24,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:56:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2020-11-29 21:56:24,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 21:56:24,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:24,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:24,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:24,943 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]=== [2020-11-29 21:56:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:24,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1237119461, now seen corresponding path program 2 times [2020-11-29 21:56:24,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:24,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658840891] [2020-11-29 21:56:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:24,954 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:24,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184886501] [2020-11-29 21:56:24,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:25,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:56:25,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:56:25,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 21:56:25,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:25,072 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:56:25,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:25,151 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:25,153 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:25,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658840891] [2020-11-29 21:56:25,176 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:25,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184886501] [2020-11-29 21:56:25,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:56:25,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 21:56:25,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145150515] [2020-11-29 21:56:25,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:56:25,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:25,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:56:25,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:56:25,178 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand 8 states. [2020-11-29 21:56:25,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:25,950 INFO L93 Difference]: Finished difference Result 178 states and 204 transitions. [2020-11-29 21:56:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 21:56:25,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-11-29 21:56:25,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:25,953 INFO L225 Difference]: With dead ends: 178 [2020-11-29 21:56:25,953 INFO L226 Difference]: Without dead ends: 172 [2020-11-29 21:56:25,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-29 21:56:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-29 21:56:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 113. [2020-11-29 21:56:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 21:56:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2020-11-29 21:56:25,967 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 34 [2020-11-29 21:56:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:25,968 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2020-11-29 21:56:25,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:56:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2020-11-29 21:56:25,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 21:56:25,969 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:25,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:26,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:26,183 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]=== [2020-11-29 21:56:26,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:26,184 INFO L82 PathProgramCache]: Analyzing trace with hash -426201444, now seen corresponding path program 1 times [2020-11-29 21:56:26,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:26,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513330463] [2020-11-29 21:56:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:26,195 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:26,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906323303] [2020-11-29 21:56:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:26,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 21:56:26,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:26,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513330463] [2020-11-29 21:56:26,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:26,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906323303] [2020-11-29 21:56:26,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:56:26,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:56:26,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126759015] [2020-11-29 21:56:26,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:56:26,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:26,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:56:26,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:56:26,361 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand 7 states. [2020-11-29 21:56:26,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:26,423 INFO L93 Difference]: Finished difference Result 120 states and 140 transitions. [2020-11-29 21:56:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:56:26,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-29 21:56:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:26,426 INFO L225 Difference]: With dead ends: 120 [2020-11-29 21:56:26,426 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 21:56:26,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:56:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 21:56:26,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-29 21:56:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-29 21:56:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-11-29 21:56:26,446 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 34 [2020-11-29 21:56:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:26,446 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-11-29 21:56:26,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:56:26,447 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-11-29 21:56:26,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 21:56:26,454 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:26,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:26,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 21:56:26,658 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]=== [2020-11-29 21:56:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:26,659 INFO L82 PathProgramCache]: Analyzing trace with hash -328235454, now seen corresponding path program 1 times [2020-11-29 21:56:26,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:26,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34641938] [2020-11-29 21:56:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:26,669 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:26,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113229831] [2020-11-29 21:56:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:26,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 21:56:26,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:26,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34641938] [2020-11-29 21:56:26,889 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:26,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113229831] [2020-11-29 21:56:26,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:56:26,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 21:56:26,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398614711] [2020-11-29 21:56:26,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:56:26,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:56:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:56:26,891 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 9 states. [2020-11-29 21:56:27,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:27,378 INFO L93 Difference]: Finished difference Result 187 states and 218 transitions. [2020-11-29 21:56:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 21:56:27,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-29 21:56:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:27,380 INFO L225 Difference]: With dead ends: 187 [2020-11-29 21:56:27,380 INFO L226 Difference]: Without dead ends: 179 [2020-11-29 21:56:27,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-29 21:56:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-29 21:56:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 138. [2020-11-29 21:56:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-29 21:56:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-11-29 21:56:27,398 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 35 [2020-11-29 21:56:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:27,398 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-11-29 21:56:27,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:56:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-11-29 21:56:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 21:56:27,399 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:27,400 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:27,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 21:56:27,623 INFO L429 AbstractCegarLoop]: === Iteration 15 === [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]=== [2020-11-29 21:56:27,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:27,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1249964580, now seen corresponding path program 2 times [2020-11-29 21:56:27,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:27,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143185034] [2020-11-29 21:56:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:27,633 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:27,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660093149] [2020-11-29 21:56:27,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:27,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:56:27,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:56:27,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 21:56:27,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:27,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143185034] [2020-11-29 21:56:27,782 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:27,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660093149] [2020-11-29 21:56:27,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:56:27,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:56:27,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651649950] [2020-11-29 21:56:27,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:56:27,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:27,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:56:27,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:56:27,784 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 7 states. [2020-11-29 21:56:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:27,858 INFO L93 Difference]: Finished difference Result 206 states and 244 transitions. [2020-11-29 21:56:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:56:27,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-11-29 21:56:27,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:27,860 INFO L225 Difference]: With dead ends: 206 [2020-11-29 21:56:27,861 INFO L226 Difference]: Without dead ends: 142 [2020-11-29 21:56:27,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:56:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-29 21:56:27,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-11-29 21:56:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-29 21:56:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2020-11-29 21:56:27,875 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 38 [2020-11-29 21:56:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:27,875 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2020-11-29 21:56:27,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:56:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2020-11-29 21:56:27,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 21:56:27,876 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:27,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:28,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 21:56:28,094 INFO L429 AbstractCegarLoop]: === Iteration 16 === [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]=== [2020-11-29 21:56:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:28,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1789775885, now seen corresponding path program 1 times [2020-11-29 21:56:28,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:28,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282718883] [2020-11-29 21:56:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:28,115 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:28,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468361965] [2020-11-29 21:56:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:56:28,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:56:28,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:56:28,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282718883] [2020-11-29 21:56:28,271 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:28,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468361965] [2020-11-29 21:56:28,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:56:28,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 21:56:28,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472311758] [2020-11-29 21:56:28,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:56:28,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:28,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:56:28,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:56:28,273 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 8 states. [2020-11-29 21:56:28,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:56:28,376 INFO L93 Difference]: Finished difference Result 218 states and 257 transitions. [2020-11-29 21:56:28,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 21:56:28,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-11-29 21:56:28,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:56:28,379 INFO L225 Difference]: With dead ends: 218 [2020-11-29 21:56:28,379 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 21:56:28,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:56:28,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 21:56:28,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-11-29 21:56:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-29 21:56:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 176 transitions. [2020-11-29 21:56:28,395 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 176 transitions. Word has length 43 [2020-11-29 21:56:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:56:28,396 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 176 transitions. [2020-11-29 21:56:28,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:56:28,396 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 176 transitions. [2020-11-29 21:56:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 21:56:28,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:56:28,397 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:56:28,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:28,611 INFO L429 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-11-29 21:56:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:56:28,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1351982982, now seen corresponding path program 3 times [2020-11-29 21:56:28,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:56:28,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121367643] [2020-11-29 21:56:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:56:28,620 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:56:28,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692925348] [2020-11-29 21:56:28,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:56:28,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:56:28,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:56:28,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 21:56:28,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:56:28,708 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:56:28,709 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:32,925 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:56:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-29 21:56:39,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121367643] [2020-11-29 21:56:39,094 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:56:39,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692925348] [2020-11-29 21:56:39,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:56:39,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:56:39,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576823918] [2020-11-29 21:56:39,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:56:39,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:56:39,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:56:39,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-11-29 21:56:39,096 INFO L87 Difference]: Start difference. First operand 152 states and 176 transitions. Second operand 6 states. [2020-11-29 21:56:45,314 WARN L193 SmtUtils]: Spent 4.15 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 21:56:53,697 WARN L193 SmtUtils]: Spent 8.35 s on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-11-29 21:57:31,691 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (= c_ULTIMATE.start_main_~b~0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= (mod c_ULTIMATE.start_main_~a~0 (- 2)) 0) (= c_ULTIMATE.start_main_~b~0 (* 2 (* (div (* c_ULTIMATE.start_main_~a~0 (- 1)) (- 2)) c_ULTIMATE.start_main_~y~0)))) is different from false [2020-11-29 21:57:37,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:37,996 INFO L93 Difference]: Finished difference Result 190 states and 215 transitions. [2020-11-29 21:57:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:57:38,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-11-29 21:57:38,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:38,002 INFO L225 Difference]: With dead ends: 190 [2020-11-29 21:57:38,002 INFO L226 Difference]: Without dead ends: 184 [2020-11-29 21:57:38,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=33, Invalid=56, Unknown=5, NotChecked=16, Total=110 [2020-11-29 21:57:38,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-29 21:57:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 134. [2020-11-29 21:57:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 21:57:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2020-11-29 21:57:38,027 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 44 [2020-11-29 21:57:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:38,028 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2020-11-29 21:57:38,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:57:38,028 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2020-11-29 21:57:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 21:57:38,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:38,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:38,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 21:57:38,230 INFO L429 AbstractCegarLoop]: === Iteration 18 === [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]=== [2020-11-29 21:57:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:38,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1279663409, now seen corresponding path program 2 times [2020-11-29 21:57:38,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:38,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080952237] [2020-11-29 21:57:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:38,238 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:38,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258326843] [2020-11-29 21:57:38,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:38,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:57:38,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:38,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:57:38,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:38,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080952237] [2020-11-29 21:57:38,396 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:38,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258326843] [2020-11-29 21:57:38,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:57:38,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 21:57:38,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651679779] [2020-11-29 21:57:38,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:57:38,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:38,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:57:38,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:57:38,399 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand 8 states. [2020-11-29 21:57:38,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:38,574 INFO L93 Difference]: Finished difference Result 141 states and 160 transitions. [2020-11-29 21:57:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:57:38,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-11-29 21:57:38,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:38,576 INFO L225 Difference]: With dead ends: 141 [2020-11-29 21:57:38,576 INFO L226 Difference]: Without dead ends: 137 [2020-11-29 21:57:38,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:57:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-29 21:57:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-11-29 21:57:38,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-29 21:57:38,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 156 transitions. [2020-11-29 21:57:38,614 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 156 transitions. Word has length 44 [2020-11-29 21:57:38,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:38,614 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 156 transitions. [2020-11-29 21:57:38,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:57:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 156 transitions. [2020-11-29 21:57:38,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 21:57:38,615 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:38,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:38,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 21:57:38,831 INFO L429 AbstractCegarLoop]: === Iteration 19 === [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]=== [2020-11-29 21:57:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:38,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1013967437, now seen corresponding path program 2 times [2020-11-29 21:57:38,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:38,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801085386] [2020-11-29 21:57:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:38,840 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:38,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295236166] [2020-11-29 21:57:38,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:38,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:57:38,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:38,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 21:57:38,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:38,965 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:57:38,966 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:57:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:39,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801085386] [2020-11-29 21:57:39,485 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:39,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295236166] [2020-11-29 21:57:39,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:57:39,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 21:57:39,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780137851] [2020-11-29 21:57:39,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 21:57:39,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:39,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 21:57:39,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:57:39,489 INFO L87 Difference]: Start difference. First operand 137 states and 156 transitions. Second operand 10 states. [2020-11-29 21:57:40,170 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-29 21:57:40,474 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-29 21:57:40,746 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-29 21:57:41,047 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-29 21:57:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:41,860 INFO L93 Difference]: Finished difference Result 199 states and 230 transitions. [2020-11-29 21:57:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 21:57:41,862 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-11-29 21:57:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:41,863 INFO L225 Difference]: With dead ends: 199 [2020-11-29 21:57:41,863 INFO L226 Difference]: Without dead ends: 191 [2020-11-29 21:57:41,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2020-11-29 21:57:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-29 21:57:41,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 143. [2020-11-29 21:57:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 21:57:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2020-11-29 21:57:41,887 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 45 [2020-11-29 21:57:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:41,887 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2020-11-29 21:57:41,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 21:57:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2020-11-29 21:57:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 21:57:41,888 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:41,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:42,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:42,103 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-11-29 21:57:42,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:42,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2111494054, now seen corresponding path program 3 times [2020-11-29 21:57:42,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:42,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320742002] [2020-11-29 21:57:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:42,112 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:42,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806734042] [2020-11-29 21:57:42,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:42,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:57:42,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:42,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-29 21:57:42,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:42,212 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:57:42,213 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:57:42,510 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 21:57:42,512 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:57:42,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:57:42,734 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 21:57:42,966 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2020-11-29 21:57:43,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:57:43,007 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 21:57:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-29 21:57:43,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320742002] [2020-11-29 21:57:43,067 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:43,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806734042] [2020-11-29 21:57:43,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:43,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-29 21:57:43,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098260674] [2020-11-29 21:57:43,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 21:57:43,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:43,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 21:57:43,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:57:43,069 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand 11 states. [2020-11-29 21:57:43,718 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-11-29 21:57:43,904 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2020-11-29 21:57:44,424 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2020-11-29 21:57:44,711 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2020-11-29 21:57:44,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:44,940 INFO L93 Difference]: Finished difference Result 212 states and 246 transitions. [2020-11-29 21:57:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:57:44,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-11-29 21:57:44,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:44,943 INFO L225 Difference]: With dead ends: 212 [2020-11-29 21:57:44,943 INFO L226 Difference]: Without dead ends: 150 [2020-11-29 21:57:44,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-11-29 21:57:44,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-29 21:57:44,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2020-11-29 21:57:44,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 21:57:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 161 transitions. [2020-11-29 21:57:44,971 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 161 transitions. Word has length 49 [2020-11-29 21:57:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:44,971 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 161 transitions. [2020-11-29 21:57:44,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 21:57:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 161 transitions. [2020-11-29 21:57:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-29 21:57:44,972 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:44,972 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:45,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:45,191 INFO L429 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-11-29 21:57:45,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:45,192 INFO L82 PathProgramCache]: Analyzing trace with hash -721749736, now seen corresponding path program 2 times [2020-11-29 21:57:45,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:45,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963650254] [2020-11-29 21:57:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:45,206 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:45,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213520356] [2020-11-29 21:57:45,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:45,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:57:45,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:45,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 21:57:45,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:45,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963650254] [2020-11-29 21:57:45,402 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:45,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213520356] [2020-11-29 21:57:45,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:57:45,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 21:57:45,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351031511] [2020-11-29 21:57:45,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:57:45,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:45,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:57:45,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:57:45,406 INFO L87 Difference]: Start difference. First operand 143 states and 161 transitions. Second operand 9 states. [2020-11-29 21:57:45,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:45,646 INFO L93 Difference]: Finished difference Result 218 states and 249 transitions. [2020-11-29 21:57:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 21:57:45,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-11-29 21:57:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:45,649 INFO L225 Difference]: With dead ends: 218 [2020-11-29 21:57:45,649 INFO L226 Difference]: Without dead ends: 165 [2020-11-29 21:57:45,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:57:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-11-29 21:57:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2020-11-29 21:57:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 21:57:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 181 transitions. [2020-11-29 21:57:45,676 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 181 transitions. Word has length 53 [2020-11-29 21:57:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:45,676 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 181 transitions. [2020-11-29 21:57:45,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:57:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 181 transitions. [2020-11-29 21:57:45,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-29 21:57:45,677 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:45,678 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:45,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:45,902 INFO L429 AbstractCegarLoop]: === Iteration 22 === [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]=== [2020-11-29 21:57:45,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:45,903 INFO L82 PathProgramCache]: Analyzing trace with hash 731780486, now seen corresponding path program 4 times [2020-11-29 21:57:45,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:45,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055895638] [2020-11-29 21:57:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:45,914 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:45,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391130413] [2020-11-29 21:57:45,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:45,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 21:57:45,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:45,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-29 21:57:45,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:46,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055895638] [2020-11-29 21:57:46,527 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:46,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391130413] [2020-11-29 21:57:46,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:57:46,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 21:57:46,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223106927] [2020-11-29 21:57:46,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:57:46,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:46,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:57:46,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:57:46,530 INFO L87 Difference]: Start difference. First operand 163 states and 181 transitions. Second operand 9 states. [2020-11-29 21:57:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:48,347 INFO L93 Difference]: Finished difference Result 229 states and 259 transitions. [2020-11-29 21:57:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 21:57:48,351 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-11-29 21:57:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:48,353 INFO L225 Difference]: With dead ends: 229 [2020-11-29 21:57:48,353 INFO L226 Difference]: Without dead ends: 220 [2020-11-29 21:57:48,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-11-29 21:57:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-29 21:57:48,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 172. [2020-11-29 21:57:48,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-29 21:57:48,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 191 transitions. [2020-11-29 21:57:48,399 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 191 transitions. Word has length 54 [2020-11-29 21:57:48,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:48,399 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 191 transitions. [2020-11-29 21:57:48,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:57:48,400 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 191 transitions. [2020-11-29 21:57:48,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 21:57:48,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:48,401 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:48,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 21:57:48,623 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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]=== [2020-11-29 21:57:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:48,623 INFO L82 PathProgramCache]: Analyzing trace with hash -2096365201, now seen corresponding path program 5 times [2020-11-29 21:57:48,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:48,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737721005] [2020-11-29 21:57:48,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:48,631 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:48,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926235508] [2020-11-29 21:57:48,632 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:48,696 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-29 21:57:48,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:48,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 21:57:48,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:57:49,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737721005] [2020-11-29 21:57:49,031 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:49,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926235508] [2020-11-29 21:57:49,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:57:49,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 21:57:49,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359310950] [2020-11-29 21:57:49,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:57:49,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:49,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:57:49,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:57:49,034 INFO L87 Difference]: Start difference. First operand 172 states and 191 transitions. Second operand 7 states. [2020-11-29 21:57:50,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:50,462 INFO L93 Difference]: Finished difference Result 312 states and 348 transitions. [2020-11-29 21:57:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:57:50,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-11-29 21:57:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:50,468 INFO L225 Difference]: With dead ends: 312 [2020-11-29 21:57:50,468 INFO L226 Difference]: Without dead ends: 217 [2020-11-29 21:57:50,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:57:50,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-29 21:57:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 165. [2020-11-29 21:57:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 21:57:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 187 transitions. [2020-11-29 21:57:50,498 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 187 transitions. Word has length 59 [2020-11-29 21:57:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:50,499 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 187 transitions. [2020-11-29 21:57:50,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:57:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 187 transitions. [2020-11-29 21:57:50,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-29 21:57:50,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:50,503 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:50,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 21:57:50,728 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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]=== [2020-11-29 21:57:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:50,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1988325277, now seen corresponding path program 3 times [2020-11-29 21:57:50,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:50,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352059265] [2020-11-29 21:57:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:50,745 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:50,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086919398] [2020-11-29 21:57:50,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:50,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:57:50,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:50,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 21:57:50,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:50,867 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:57:50,868 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:57:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-11-29 21:57:50,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352059265] [2020-11-29 21:57:50,969 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:57:50,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086919398] [2020-11-29 21:57:50,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:57:50,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:57:50,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876444329] [2020-11-29 21:57:50,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:57:50,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:57:50,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:57:50,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:57:50,971 INFO L87 Difference]: Start difference. First operand 165 states and 187 transitions. Second operand 6 states. [2020-11-29 21:57:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:57:55,668 INFO L93 Difference]: Finished difference Result 188 states and 213 transitions. [2020-11-29 21:57:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:57:55,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-11-29 21:57:55,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:57:55,670 INFO L225 Difference]: With dead ends: 188 [2020-11-29 21:57:55,670 INFO L226 Difference]: Without dead ends: 167 [2020-11-29 21:57:55,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:57:55,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-29 21:57:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 124. [2020-11-29 21:57:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-29 21:57:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2020-11-29 21:57:55,694 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 63 [2020-11-29 21:57:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:57:55,694 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2020-11-29 21:57:55,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:57:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2020-11-29 21:57:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-29 21:57:55,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:57:55,700 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:57:55,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:55,915 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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]=== [2020-11-29 21:57:55,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:57:55,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1474300883, now seen corresponding path program 4 times [2020-11-29 21:57:55,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:57:55,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181430639] [2020-11-29 21:57:55,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:57:55,923 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:57:55,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416607148] [2020-11-29 21:57:55,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:57:55,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 21:57:55,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:57:55,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-29 21:57:55,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:57:58,104 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 21:57:58,106 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:57:58,106 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:57:58,928 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 21:57:59,242 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 21:57:59,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:58:00,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181430639] [2020-11-29 21:58:00,054 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:00,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416607148] [2020-11-29 21:58:00,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:00,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-29 21:58:00,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86897606] [2020-11-29 21:58:00,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 21:58:00,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:00,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 21:58:00,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:58:00,055 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 13 states. [2020-11-29 21:58:04,272 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-11-29 21:58:04,737 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-11-29 21:58:04,987 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 21:58:06,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:06,067 INFO L93 Difference]: Finished difference Result 231 states and 256 transitions. [2020-11-29 21:58:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 21:58:06,070 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2020-11-29 21:58:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:06,072 INFO L225 Difference]: With dead ends: 231 [2020-11-29 21:58:06,072 INFO L226 Difference]: Without dead ends: 218 [2020-11-29 21:58:06,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-11-29 21:58:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-29 21:58:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 140. [2020-11-29 21:58:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-29 21:58:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2020-11-29 21:58:06,100 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 63 [2020-11-29 21:58:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:06,100 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2020-11-29 21:58:06,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 21:58:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2020-11-29 21:58:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-29 21:58:06,101 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:06,102 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:06,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-29 21:58:06,307 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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]=== [2020-11-29 21:58:06,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:06,308 INFO L82 PathProgramCache]: Analyzing trace with hash 122644379, now seen corresponding path program 6 times [2020-11-29 21:58:06,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:06,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98270214] [2020-11-29 21:58:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:06,316 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:06,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227977214] [2020-11-29 21:58:06,323 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:06,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-29 21:58:06,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:58:06,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 21:58:06,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:06,414 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:58:06,414 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:06,477 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:58:06,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:06,522 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:06,525 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 43 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-29 21:58:06,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98270214] [2020-11-29 21:58:06,596 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:06,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227977214] [2020-11-29 21:58:06,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:06,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 21:58:06,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589800353] [2020-11-29 21:58:06,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:58:06,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:06,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:58:06,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:58:06,598 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand 9 states. [2020-11-29 21:58:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:11,654 INFO L93 Difference]: Finished difference Result 212 states and 232 transitions. [2020-11-29 21:58:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:58:11,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-11-29 21:58:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:11,657 INFO L225 Difference]: With dead ends: 212 [2020-11-29 21:58:11,657 INFO L226 Difference]: Without dead ends: 206 [2020-11-29 21:58:11,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:58:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-11-29 21:58:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 150. [2020-11-29 21:58:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-29 21:58:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 163 transitions. [2020-11-29 21:58:11,689 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 163 transitions. Word has length 64 [2020-11-29 21:58:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:11,690 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 163 transitions. [2020-11-29 21:58:11,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:58:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 163 transitions. [2020-11-29 21:58:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-29 21:58:11,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:11,691 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:11,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:11,911 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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]=== [2020-11-29 21:58:11,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:11,911 INFO L82 PathProgramCache]: Analyzing trace with hash -372809896, now seen corresponding path program 1 times [2020-11-29 21:58:11,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:11,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958167191] [2020-11-29 21:58:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:11,919 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:11,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293564726] [2020-11-29 21:58:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:58:11,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 21:58:11,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 3 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:58:12,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958167191] [2020-11-29 21:58:12,132 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:12,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293564726] [2020-11-29 21:58:12,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:12,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 21:58:12,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552208198] [2020-11-29 21:58:12,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 21:58:12,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:12,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 21:58:12,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:58:12,135 INFO L87 Difference]: Start difference. First operand 150 states and 163 transitions. Second operand 10 states. [2020-11-29 21:58:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:12,373 INFO L93 Difference]: Finished difference Result 234 states and 258 transitions. [2020-11-29 21:58:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 21:58:12,374 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-11-29 21:58:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:12,375 INFO L225 Difference]: With dead ends: 234 [2020-11-29 21:58:12,376 INFO L226 Difference]: Without dead ends: 171 [2020-11-29 21:58:12,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2020-11-29 21:58:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-29 21:58:12,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-11-29 21:58:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-11-29 21:58:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 182 transitions. [2020-11-29 21:58:12,405 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 182 transitions. Word has length 67 [2020-11-29 21:58:12,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:12,406 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 182 transitions. [2020-11-29 21:58:12,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 21:58:12,406 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 182 transitions. [2020-11-29 21:58:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-11-29 21:58:12,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:12,407 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:12,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-29 21:58:12,618 INFO L429 AbstractCegarLoop]: === Iteration 28 === [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]=== [2020-11-29 21:58:12,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:12,618 INFO L82 PathProgramCache]: Analyzing trace with hash -204396104, now seen corresponding path program 5 times [2020-11-29 21:58:12,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:12,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732072445] [2020-11-29 21:58:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:12,625 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:12,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835617101] [2020-11-29 21:58:12,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:12,718 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-29 21:58:12,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:58:12,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 21:58:12,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 5 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:58:12,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732072445] [2020-11-29 21:58:12,862 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:12,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835617101] [2020-11-29 21:58:12,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:12,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 21:58:12,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100915350] [2020-11-29 21:58:12,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 21:58:12,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:12,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 21:58:12,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:58:12,863 INFO L87 Difference]: Start difference. First operand 169 states and 182 transitions. Second operand 11 states. [2020-11-29 21:58:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:13,160 INFO L93 Difference]: Finished difference Result 267 states and 293 transitions. [2020-11-29 21:58:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 21:58:13,161 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-11-29 21:58:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:13,162 INFO L225 Difference]: With dead ends: 267 [2020-11-29 21:58:13,163 INFO L226 Difference]: Without dead ends: 204 [2020-11-29 21:58:13,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2020-11-29 21:58:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-11-29 21:58:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2020-11-29 21:58:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-29 21:58:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 216 transitions. [2020-11-29 21:58:13,200 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 216 transitions. Word has length 73 [2020-11-29 21:58:13,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:13,200 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 216 transitions. [2020-11-29 21:58:13,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 21:58:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 216 transitions. [2020-11-29 21:58:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-29 21:58:13,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:13,201 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:13,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-29 21:58:13,402 INFO L429 AbstractCegarLoop]: === Iteration 29 === [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]=== [2020-11-29 21:58:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:13,402 INFO L82 PathProgramCache]: Analyzing trace with hash -982821435, now seen corresponding path program 7 times [2020-11-29 21:58:13,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:13,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319673345] [2020-11-29 21:58:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:13,410 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:13,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405514026] [2020-11-29 21:58:13,411 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:58:13,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 21:58:13,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:58:13,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319673345] [2020-11-29 21:58:13,669 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:13,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405514026] [2020-11-29 21:58:13,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:13,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 21:58:13,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561308328] [2020-11-29 21:58:13,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 21:58:13,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:13,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 21:58:13,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:58:13,672 INFO L87 Difference]: Start difference. First operand 202 states and 216 transitions. Second operand 12 states. [2020-11-29 21:58:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:14,044 INFO L93 Difference]: Finished difference Result 259 states and 277 transitions. [2020-11-29 21:58:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 21:58:14,045 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-11-29 21:58:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:14,047 INFO L225 Difference]: With dead ends: 259 [2020-11-29 21:58:14,047 INFO L226 Difference]: Without dead ends: 255 [2020-11-29 21:58:14,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2020-11-29 21:58:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-29 21:58:14,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 220. [2020-11-29 21:58:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-11-29 21:58:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 236 transitions. [2020-11-29 21:58:14,089 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 236 transitions. Word has length 79 [2020-11-29 21:58:14,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:14,089 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 236 transitions. [2020-11-29 21:58:14,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 21:58:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 236 transitions. [2020-11-29 21:58:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-29 21:58:14,090 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:14,091 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:14,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-29 21:58:14,291 INFO L429 AbstractCegarLoop]: === Iteration 30 === [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]=== [2020-11-29 21:58:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:14,292 INFO L82 PathProgramCache]: Analyzing trace with hash -403585991, now seen corresponding path program 3 times [2020-11-29 21:58:14,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:14,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475773639] [2020-11-29 21:58:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:14,299 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:14,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154341589] [2020-11-29 21:58:14,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:14,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:58:14,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:58:14,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 21:58:14,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:14,429 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:58:14,429 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:14,463 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:58:14,463 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-29 21:58:14,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475773639] [2020-11-29 21:58:14,547 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:14,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154341589] [2020-11-29 21:58:14,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:58:14,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:58:14,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600214869] [2020-11-29 21:58:14,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:58:14,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:14,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:58:14,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:58:14,549 INFO L87 Difference]: Start difference. First operand 220 states and 236 transitions. Second operand 6 states. [2020-11-29 21:58:21,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:21,314 INFO L93 Difference]: Finished difference Result 227 states and 244 transitions. [2020-11-29 21:58:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:58:21,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-11-29 21:58:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:21,316 INFO L225 Difference]: With dead ends: 227 [2020-11-29 21:58:21,316 INFO L226 Difference]: Without dead ends: 219 [2020-11-29 21:58:21,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:58:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-11-29 21:58:21,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 206. [2020-11-29 21:58:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-29 21:58:21,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 220 transitions. [2020-11-29 21:58:21,355 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 220 transitions. Word has length 80 [2020-11-29 21:58:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:21,355 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 220 transitions. [2020-11-29 21:58:21,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:58:21,355 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 220 transitions. [2020-11-29 21:58:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-29 21:58:21,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:21,356 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:21,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:21,557 INFO L429 AbstractCegarLoop]: === Iteration 31 === [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]=== [2020-11-29 21:58:21,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:21,558 INFO L82 PathProgramCache]: Analyzing trace with hash 438742244, now seen corresponding path program 1 times [2020-11-29 21:58:21,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:21,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355598265] [2020-11-29 21:58:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:21,568 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:21,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997921491] [2020-11-29 21:58:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:58:21,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 21:58:21,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 75 proven. 86 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 21:58:22,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355598265] [2020-11-29 21:58:22,992 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:22,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997921491] [2020-11-29 21:58:22,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:22,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 21:58:22,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295293796] [2020-11-29 21:58:22,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:58:22,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:22,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:58:22,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:58:22,994 INFO L87 Difference]: Start difference. First operand 206 states and 220 transitions. Second operand 9 states. [2020-11-29 21:58:26,091 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2020-11-29 21:58:26,630 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-11-29 21:58:28,711 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-11-29 21:58:29,176 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-29 21:58:29,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:29,317 INFO L93 Difference]: Finished difference Result 348 states and 373 transitions. [2020-11-29 21:58:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:58:29,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-11-29 21:58:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:29,323 INFO L225 Difference]: With dead ends: 348 [2020-11-29 21:58:29,323 INFO L226 Difference]: Without dead ends: 258 [2020-11-29 21:58:29,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-29 21:58:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-11-29 21:58:29,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 205. [2020-11-29 21:58:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-11-29 21:58:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 221 transitions. [2020-11-29 21:58:29,376 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 221 transitions. Word has length 82 [2020-11-29 21:58:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:29,377 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 221 transitions. [2020-11-29 21:58:29,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:58:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 221 transitions. [2020-11-29 21:58:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-29 21:58:29,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:29,378 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:29,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-11-29 21:58:29,594 INFO L429 AbstractCegarLoop]: === Iteration 32 === [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]=== [2020-11-29 21:58:29,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:29,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1198599555, now seen corresponding path program 6 times [2020-11-29 21:58:29,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:29,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713757192] [2020-11-29 21:58:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:29,601 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:29,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565786245] [2020-11-29 21:58:29,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:29,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-29 21:58:29,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:58:29,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-29 21:58:29,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:29,792 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:58:29,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:58:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-11-29 21:58:30,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713757192] [2020-11-29 21:58:30,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:30,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565786245] [2020-11-29 21:58:30,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:30,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 21:58:30,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994810573] [2020-11-29 21:58:30,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 21:58:30,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:30,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 21:58:30,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:58:30,165 INFO L87 Difference]: Start difference. First operand 205 states and 221 transitions. Second operand 11 states. [2020-11-29 21:58:30,683 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2020-11-29 21:58:31,243 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2020-11-29 21:58:32,120 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2020-11-29 21:58:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:45,666 INFO L93 Difference]: Finished difference Result 243 states and 261 transitions. [2020-11-29 21:58:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 21:58:45,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-11-29 21:58:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:45,669 INFO L225 Difference]: With dead ends: 243 [2020-11-29 21:58:45,669 INFO L226 Difference]: Without dead ends: 204 [2020-11-29 21:58:45,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-11-29 21:58:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-11-29 21:58:45,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 171. [2020-11-29 21:58:45,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-29 21:58:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 183 transitions. [2020-11-29 21:58:45,715 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 183 transitions. Word has length 83 [2020-11-29 21:58:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:45,716 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 183 transitions. [2020-11-29 21:58:45,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 21:58:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 183 transitions. [2020-11-29 21:58:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-29 21:58:45,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:45,717 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:45,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:45,943 INFO L429 AbstractCegarLoop]: === Iteration 33 === [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]=== [2020-11-29 21:58:45,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:45,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1544954675, now seen corresponding path program 7 times [2020-11-29 21:58:45,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:45,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243924658] [2020-11-29 21:58:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:45,950 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:45,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32549833] [2020-11-29 21:58:45,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:58:46,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 21:58:46,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 5 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:58:46,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243924658] [2020-11-29 21:58:46,203 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:46,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32549833] [2020-11-29 21:58:46,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:46,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 21:58:46,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848559233] [2020-11-29 21:58:46,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 21:58:46,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:46,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 21:58:46,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:58:46,208 INFO L87 Difference]: Start difference. First operand 171 states and 183 transitions. Second operand 12 states. [2020-11-29 21:58:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:46,570 INFO L93 Difference]: Finished difference Result 273 states and 297 transitions. [2020-11-29 21:58:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 21:58:46,571 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-11-29 21:58:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:46,572 INFO L225 Difference]: With dead ends: 273 [2020-11-29 21:58:46,572 INFO L226 Difference]: Without dead ends: 212 [2020-11-29 21:58:46,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-11-29 21:58:46,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-11-29 21:58:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2020-11-29 21:58:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-11-29 21:58:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 223 transitions. [2020-11-29 21:58:46,610 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 223 transitions. Word has length 83 [2020-11-29 21:58:46,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:46,610 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 223 transitions. [2020-11-29 21:58:46,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 21:58:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 223 transitions. [2020-11-29 21:58:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 21:58:46,611 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:46,612 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:46,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-11-29 21:58:46,827 INFO L429 AbstractCegarLoop]: === Iteration 34 === [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]=== [2020-11-29 21:58:46,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:46,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1439999258, now seen corresponding path program 8 times [2020-11-29 21:58:46,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:46,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681268878] [2020-11-29 21:58:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:46,835 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:46,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888215142] [2020-11-29 21:58:46,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:46,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:58:46,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:58:46,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 21:58:46,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:58:47,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681268878] [2020-11-29 21:58:47,111 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:47,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888215142] [2020-11-29 21:58:47,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:47,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-29 21:58:47,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786358564] [2020-11-29 21:58:47,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 21:58:47,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:47,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 21:58:47,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:58:47,113 INFO L87 Difference]: Start difference. First operand 210 states and 223 transitions. Second operand 13 states. [2020-11-29 21:58:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:58:47,484 INFO L93 Difference]: Finished difference Result 264 states and 278 transitions. [2020-11-29 21:58:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 21:58:47,485 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-11-29 21:58:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:58:47,486 INFO L225 Difference]: With dead ends: 264 [2020-11-29 21:58:47,486 INFO L226 Difference]: Without dead ends: 257 [2020-11-29 21:58:47,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-11-29 21:58:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-11-29 21:58:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 216. [2020-11-29 21:58:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-29 21:58:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 229 transitions. [2020-11-29 21:58:47,530 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 229 transitions. Word has length 89 [2020-11-29 21:58:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:58:47,531 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 229 transitions. [2020-11-29 21:58:47,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 21:58:47,531 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 229 transitions. [2020-11-29 21:58:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-29 21:58:47,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:58:47,532 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:58:47,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-29 21:58:47,747 INFO L429 AbstractCegarLoop]: === Iteration 35 === [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]=== [2020-11-29 21:58:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:58:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1830206841, now seen corresponding path program 2 times [2020-11-29 21:58:47,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:58:47,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146420490] [2020-11-29 21:58:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:58:47,757 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:58:47,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928103051] [2020-11-29 21:58:47,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:58:47,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:58:47,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:58:47,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 21:58:47,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:58:49,604 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 21:58:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 37 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:58:53,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146420490] [2020-11-29 21:58:53,491 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:58:53,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928103051] [2020-11-29 21:58:53,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:58:53,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 21:58:53,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353460455] [2020-11-29 21:58:53,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 21:58:53,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:58:53,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 21:58:53,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=89, Unknown=1, NotChecked=0, Total=110 [2020-11-29 21:58:53,494 INFO L87 Difference]: Start difference. First operand 216 states and 229 transitions. Second operand 11 states. [2020-11-29 21:59:00,667 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-11-29 21:59:03,622 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-11-29 21:59:04,485 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-11-29 21:59:06,458 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-11-29 21:59:09,899 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-29 21:59:13,795 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-11-29 21:59:14,977 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-11-29 21:59:17,565 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-11-29 21:59:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:59:18,277 INFO L93 Difference]: Finished difference Result 394 states and 420 transitions. [2020-11-29 21:59:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 21:59:18,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-11-29 21:59:18,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:59:18,288 INFO L225 Difference]: With dead ends: 394 [2020-11-29 21:59:18,288 INFO L226 Difference]: Without dead ends: 298 [2020-11-29 21:59:18,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=99, Invalid=280, Unknown=1, NotChecked=0, Total=380 [2020-11-29 21:59:18,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-29 21:59:18,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 229. [2020-11-29 21:59:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-11-29 21:59:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2020-11-29 21:59:18,356 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 92 [2020-11-29 21:59:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:59:18,356 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2020-11-29 21:59:18,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 21:59:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2020-11-29 21:59:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-29 21:59:18,357 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:59:18,358 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:59:18,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-29 21:59:18,571 INFO L429 AbstractCegarLoop]: === Iteration 36 === [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]=== [2020-11-29 21:59:18,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:59:18,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1359225128, now seen corresponding path program 8 times [2020-11-29 21:59:18,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:59:18,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387584718] [2020-11-29 21:59:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:59:18,581 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:59:18,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543369315] [2020-11-29 21:59:18,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:59:18,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:59:18,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:59:18,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 21:59:18,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:59:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 5 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:59:18,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387584718] [2020-11-29 21:59:18,806 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:59:18,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543369315] [2020-11-29 21:59:18,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:59:18,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-29 21:59:18,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651917594] [2020-11-29 21:59:18,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 21:59:18,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:59:18,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 21:59:18,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:59:18,808 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand 13 states. [2020-11-29 21:59:19,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:59:19,237 INFO L93 Difference]: Finished difference Result 379 states and 415 transitions. [2020-11-29 21:59:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 21:59:19,251 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2020-11-29 21:59:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:59:19,254 INFO L225 Difference]: With dead ends: 379 [2020-11-29 21:59:19,254 INFO L226 Difference]: Without dead ends: 270 [2020-11-29 21:59:19,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=264, Unknown=0, NotChecked=0, Total=420 [2020-11-29 21:59:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-11-29 21:59:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2020-11-29 21:59:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-11-29 21:59:19,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 287 transitions. [2020-11-29 21:59:19,324 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 287 transitions. Word has length 93 [2020-11-29 21:59:19,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:59:19,324 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 287 transitions. [2020-11-29 21:59:19,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 21:59:19,324 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 287 transitions. [2020-11-29 21:59:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-29 21:59:19,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:59:19,326 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:59:19,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-29 21:59:19,551 INFO L429 AbstractCegarLoop]: === Iteration 37 === [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]=== [2020-11-29 21:59:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:59:19,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1572975333, now seen corresponding path program 9 times [2020-11-29 21:59:19,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:59:19,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495845265] [2020-11-29 21:59:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:59:19,558 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:59:19,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188356078] [2020-11-29 21:59:19,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:59:19,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:59:19,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:59:19,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 21:59:19,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:59:19,671 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:59:19,671 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:59:19,714 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:59:19,715 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:59:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-11-29 21:59:19,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495845265] [2020-11-29 21:59:19,792 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:59:19,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188356078] [2020-11-29 21:59:19,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:59:19,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 21:59:19,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859412836] [2020-11-29 21:59:19,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:59:19,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:59:19,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:59:19,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:59:19,794 INFO L87 Difference]: Start difference. First operand 268 states and 287 transitions. Second operand 8 states. [2020-11-29 21:59:32,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:59:32,470 INFO L93 Difference]: Finished difference Result 295 states and 315 transitions. [2020-11-29 21:59:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 21:59:32,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-11-29 21:59:32,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:59:32,473 INFO L225 Difference]: With dead ends: 295 [2020-11-29 21:59:32,473 INFO L226 Difference]: Without dead ends: 282 [2020-11-29 21:59:32,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:59:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-29 21:59:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 249. [2020-11-29 21:59:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-11-29 21:59:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 264 transitions. [2020-11-29 21:59:32,526 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 264 transitions. Word has length 99 [2020-11-29 21:59:32,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:59:32,527 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 264 transitions. [2020-11-29 21:59:32,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:59:32,527 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 264 transitions. [2020-11-29 21:59:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 21:59:32,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:59:32,528 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:59:32,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-29 21:59:32,729 INFO L429 AbstractCegarLoop]: === Iteration 38 === [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]=== [2020-11-29 21:59:32,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:59:32,729 INFO L82 PathProgramCache]: Analyzing trace with hash -934357042, now seen corresponding path program 3 times [2020-11-29 21:59:32,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:59:32,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714825960] [2020-11-29 21:59:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:59:32,735 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:59:32,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652013924] [2020-11-29 21:59:32,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:59:32,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:59:32,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:59:32,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:59:32,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:59:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-11-29 21:59:32,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714825960] [2020-11-29 21:59:32,835 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:59:32,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652013924] [2020-11-29 21:59:32,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:59:32,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:59:32,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948211820] [2020-11-29 21:59:32,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:59:32,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:59:32,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:59:32,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:59:32,843 INFO L87 Difference]: Start difference. First operand 249 states and 264 transitions. Second operand 5 states. [2020-11-29 21:59:33,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:59:33,030 INFO L93 Difference]: Finished difference Result 352 states and 378 transitions. [2020-11-29 21:59:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:59:33,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-11-29 21:59:33,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:59:33,034 INFO L225 Difference]: With dead ends: 352 [2020-11-29 21:59:33,034 INFO L226 Difference]: Without dead ends: 246 [2020-11-29 21:59:33,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:59:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-11-29 21:59:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 212. [2020-11-29 21:59:33,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-29 21:59:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 220 transitions. [2020-11-29 21:59:33,097 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 220 transitions. Word has length 102 [2020-11-29 21:59:33,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:59:33,098 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 220 transitions. [2020-11-29 21:59:33,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:59:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 220 transitions. [2020-11-29 21:59:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-29 21:59:33,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:59:33,099 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:59:33,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-29 21:59:33,315 INFO L429 AbstractCegarLoop]: === Iteration 39 === [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]=== [2020-11-29 21:59:33,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:59:33,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1161359581, now seen corresponding path program 9 times [2020-11-29 21:59:33,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:59:33,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937942826] [2020-11-29 21:59:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:59:33,322 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:59:33,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336764383] [2020-11-29 21:59:33,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:59:33,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 21:59:33,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:59:33,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-29 21:59:33,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:59:33,471 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:59:33,471 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:59:33,637 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:59:33,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:59:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 12 proven. 139 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-11-29 21:59:38,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937942826] [2020-11-29 21:59:38,310 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:59:38,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336764383] [2020-11-29 21:59:38,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:59:38,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 21:59:38,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685978025] [2020-11-29 21:59:38,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 21:59:38,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:59:38,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 21:59:38,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-11-29 21:59:38,311 INFO L87 Difference]: Start difference. First operand 212 states and 220 transitions. Second operand 11 states. [2020-11-29 21:59:40,617 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2020-11-29 22:00:05,976 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-11-29 22:01:46,281 WARN L193 SmtUtils]: Spent 1.11 m on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-11-29 22:02:01,796 WARN L193 SmtUtils]: Spent 11.37 s on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-11-29 22:02:29,286 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-11-29 22:02:43,706 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (= c_ULTIMATE.start_main_~b~0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= (mod c_ULTIMATE.start_main_~a~0 (- 2)) 0) (= c_ULTIMATE.start_main_~b~0 (* 2 (* (div (* c_ULTIMATE.start_main_~a~0 (- 1)) (- 2)) c_ULTIMATE.start_main_~y~0))) (= (+ (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~x~0)) is different from false [2020-11-29 22:03:00,505 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 22:03:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:03:12,059 INFO L93 Difference]: Finished difference Result 234 states and 244 transitions. [2020-11-29 22:03:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 22:03:12,061 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-11-29 22:03:12,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:03:12,061 INFO L225 Difference]: With dead ends: 234 [2020-11-29 22:03:12,061 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:03:12,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 150.9s TimeCoverageRelationStatistics Valid=142, Invalid=338, Unknown=30, NotChecked=42, Total=552 [2020-11-29 22:03:12,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:03:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:03:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:03:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:03:12,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2020-11-29 22:03:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:03:12,064 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:03:12,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:03:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:03:12,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:03:12,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-29 22:03:12,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:03:12,790 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 237 [2020-11-29 22:03:13,368 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 257 [2020-11-29 22:03:13,735 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 235 [2020-11-29 22:03:13,951 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 154 [2020-11-29 22:03:15,212 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 317 DAG size of output: 284 [2020-11-29 22:03:15,545 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 228 [2020-11-29 22:03:15,814 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 175 [2020-11-29 22:03:16,115 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 216 [2020-11-29 22:04:09,133 WARN L193 SmtUtils]: Spent 53.01 s on a formula simplification. DAG size of input: 232 DAG size of output: 34 [2020-11-29 22:04:48,926 WARN L193 SmtUtils]: Spent 39.79 s on a formula simplification. DAG size of input: 247 DAG size of output: 46 [2020-11-29 22:05:35,065 WARN L193 SmtUtils]: Spent 46.14 s on a formula simplification. DAG size of input: 230 DAG size of output: 35 [2020-11-29 22:06:08,212 WARN L193 SmtUtils]: Spent 33.15 s on a formula simplification. DAG size of input: 150 DAG size of output: 56 [2020-11-29 22:08:05,085 WARN L193 SmtUtils]: Spent 1.95 m on a formula simplification. DAG size of input: 279 DAG size of output: 34 [2020-11-29 22:09:04,579 WARN L193 SmtUtils]: Spent 59.49 s on a formula simplification. DAG size of input: 223 DAG size of output: 34 [2020-11-29 22:09:47,299 WARN L193 SmtUtils]: Spent 42.72 s on a formula simplification. DAG size of input: 172 DAG size of output: 37 [2020-11-29 22:10:51,838 WARN L193 SmtUtils]: Spent 1.08 m on a formula simplification. DAG size of input: 209 DAG size of output: 38 [2020-11-29 22:10:51,841 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 22:10:51,841 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-29 22:10:51,841 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 22:10:51,841 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:10:51,841 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:10:51,841 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 22:10:51,841 INFO L274 CegarLoopResult]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2020-11-29 22:10:51,842 INFO L270 CegarLoopResult]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~b~0 .cse1)))) (= (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (+ .cse1 ULTIMATE.start_main_~x~0)) (= ULTIMATE.start_assume_abort_if_not_~cond 1))) [2020-11-29 22:10:51,842 INFO L274 CegarLoopResult]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2020-11-29 22:10:51,842 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 22:10:51,842 INFO L274 CegarLoopResult]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2020-11-29 22:10:51,842 INFO L270 CegarLoopResult]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse6 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse1 .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and (<= ~counter~0 4) (= ULTIMATE.start_main_~q~0 2) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) .cse4 .cse5 .cse6))) [2020-11-29 22:10:51,842 INFO L274 CegarLoopResult]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2020-11-29 22:10:51,842 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 22:10:51,843 INFO L277 CegarLoopResult]: At program point L64(lines 23 65) the Hoare annotation is: true [2020-11-29 22:10:51,843 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 22:10:51,843 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-29 22:10:51,843 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse3))) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) .cse1 (<= 0 ULTIMATE.start_main_~r~0)) (and .cse0 .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 .cse3) (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) .cse1) (and .cse0 .cse2 (<= (+ (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2) 1) ULTIMATE.start_main_~y~0) .cse1 (< (+ (div (+ ULTIMATE.start_main_~r~0 (- 2)) 2) 1) ULTIMATE.start_main_~y~0))))) [2020-11-29 22:10:51,843 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-29 22:10:51,843 INFO L270 CegarLoopResult]: At program point L15-3(lines 41 42) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= (+ (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2) 1) ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and (<= ~counter~0 4) (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) (= ULTIMATE.start_main_~q~0 2) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse0 .cse1 .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) .cse3 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (and .cse4 .cse0 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~r~0) .cse2) (and .cse4 .cse5 .cse6 .cse1 (< (+ (div (+ ULTIMATE.start_main_~r~0 (- 2)) 2) 1) ULTIMATE.start_main_~y~0) .cse2) (and .cse4 .cse5 .cse6 .cse2 .cse3))) [2020-11-29 22:10:51,843 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-29 22:10:51,843 INFO L270 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~r~0) .cse1 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)))) [2020-11-29 22:10:51,844 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-29 22:10:51,844 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~r~0) .cse1 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)))) [2020-11-29 22:10:51,844 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-29 22:10:51,844 INFO L270 CegarLoopResult]: At program point L15-9(lines 51 52) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and (<= 1 ULTIMATE.start_main_~r~0) .cse0 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse3) (and .cse0 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)))) [2020-11-29 22:10:51,844 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-29 22:10:51,844 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse5 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (let ((.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~b~0 .cse5))) (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (<= 1 ULTIMATE.start_main_~r~0) .cse1 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4) (and .cse1 .cse2 (= (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 .cse0) (+ .cse5 ULTIMATE.start_main_~x~0)) .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0))))) [2020-11-29 22:10:51,844 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-29 22:10:51,845 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-29 22:10:51,845 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 22:10:51,845 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 22:10:51,845 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-29 22:10:51,845 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-29 22:10:51,845 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-29 22:10:51,845 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-29 22:10:51,845 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-29 22:10:51,845 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-29 22:10:51,845 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-29 22:10:51,845 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:10:51,846 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 22:10:51,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:10:51 BoogieIcfgContainer [2020-11-29 22:10:51,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:10:51,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:10:51,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:10:51,889 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:10:51,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:56:18" (3/4) ... [2020-11-29 22:10:51,909 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:10:51,919 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-29 22:10:51,919 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:10:51,919 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:10:51,920 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:10:51,954 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a886aa27-1954-4abf-8e77-ed6000870ba6/bin/uautomizer/witness.graphml [2020-11-29 22:10:51,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:10:51,955 INFO L168 Benchmark]: Toolchain (without parser) took 874419.62 ms. Allocated memory was 96.5 MB in the beginning and 146.8 MB in the end (delta: 50.3 MB). Free memory was 68.8 MB in the beginning and 68.1 MB in the end (delta: 687.9 kB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:10:51,955 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 56.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:10:51,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.87 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 72.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:10:51,956 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.71 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:10:51,957 INFO L168 Benchmark]: Boogie Preprocessor took 29.13 ms. Allocated memory is still 96.5 MB. Free memory was 70.5 MB in the beginning and 69.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:10:51,957 INFO L168 Benchmark]: RCFGBuilder took 605.77 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 53.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:10:51,957 INFO L168 Benchmark]: TraceAbstraction took 873320.46 ms. Allocated memory was 96.5 MB in the beginning and 146.8 MB in the end (delta: 50.3 MB). Free memory was 52.6 MB in the beginning and 72.3 MB in the end (delta: -19.7 MB). Peak memory consumption was 76.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:10:51,958 INFO L168 Benchmark]: Witness Printer took 65.74 ms. Allocated memory is still 146.8 MB. Free memory was 72.3 MB in the beginning and 68.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:10:51,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 56.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.87 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 72.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.71 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.13 ms. Allocated memory is still 96.5 MB. Free memory was 70.5 MB in the beginning and 69.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 605.77 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 53.2 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 873320.46 ms. Allocated memory was 96.5 MB in the beginning and 146.8 MB in the end (delta: 50.3 MB). Free memory was 52.6 MB in the beginning and 72.3 MB in the end (delta: -19.7 MB). Peak memory consumption was 76.0 MB. Max. memory is 16.1 GB. * Witness Printer took 65.74 ms. Allocated memory is still 146.8 MB. Free memory was 72.3 MB in the beginning and 68.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: 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: 14]: Loop Invariant Derived loop invariant: (((((((x == r + q * y && 1 <= r) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && cond == 1) && a % -2 == 0) && b == a * y) || ((((((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) && b == a * y) && b == y) && y <= r) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((x == r + q * y && 1 <= r) && b == a * -1 / -2 * y * 2) && 1 <= y) && 1 == cond) && cond == 1) && a % -2 == 0) || ((((((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) && b == a * y) && b == y) && y <= r)) || ((((((((counter <= 4 && q == 2) && 2 * r < x) && 1 <= cond) && cond == 1) && x == r + y * 2) && b == a * y) && b == y) && y <= r) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((((((1 <= r && x == r + q * y) && b == a * -1 / -2 * y * 2) && 1 <= y) && 1 <= cond) && cond == 1) && a % -2 == 0) && b == a * y) || ((((((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) && b == a * y) && b == y) && y <= r) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((((counter <= 4 && b == a * -1 / -2 * y * 2) && q == 2) && 2 * r < x) && 1 <= cond) && (b + -1) / 2 + 1 <= y) && cond == 1) && a % -2 == 0) && x == r + y * 2) && b == a * y) && 2 * y <= x) || ((((x == r + q * y && 1 <= cond) && r < y) && 0 <= r) && cond == 1)) || (((((x == r + q * y && 1 <= y) && 1 == cond) && (b + -1) / 2 + 1 <= y) && (r + -2) / 2 + 1 < y) && cond == 1)) || ((((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) && b == a * y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((1 <= y && a == 1) && b == y) || (((1 <= y && b == a * -1 / -2 * y * 2) && a % -2 == 0) && b == a * y)) && r + b + q * y == a * y + x) && cond == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((x == r + q * y && 1 <= r) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && cond == 1) && a % -2 == 0) && b == a * y) || ((((((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) && b == a * y) && b == y) && y <= r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((x == r + q * y && r < y) && cond == 1) && 0 <= r) || ((((x == r + q * y && 1 <= y) && 1 == cond) && r + b + q * y == a * y + x) && cond == 1)) || ((((x == r + q * y && 1 <= y) && (b + -1) / 2 + 1 <= y) && cond == 1) && (r + -2) / 2 + 1 < y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((x == r + q * y && 1 <= r) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && cond == 1) && a % -2 == 0) && b == a * y) || ((((((1 <= y && 1 == cond) && r + b + q * y == a * y + x) && cond == 1) && b == a * y) && b == y) && y <= r) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 413.6s, OverallIterations: 39, TraceHistogramMax: 9, AutomataDifference: 368.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 459.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1312 SDtfs, 3147 SDslu, 4392 SDs, 0 SdLazy, 3960 SolverSat, 890 SolverUnsat, 64 SolverUnknown, 0 SolverNotchecked, 172.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2193 GetRequests, 1760 SyntacticMatches, 8 SemanticMatches, 425 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 205.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred in iteration=36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 39 MinimizatonAttempts, 907 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 196 NumberOfFragments, 657 HoareAnnotationTreeSize, 10 FomulaSimplifications, 923879222814 FormulaSimplificationTreeSizeReduction, 3.8s HoareSimplificationTime, 10 FomulaSimplificationsInter, 49141762200 FormulaSimplificationTreeSizeReductionInter, 455.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 32.3s InterpolantComputationTime, 2033 NumberOfCodeBlocks, 1591 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 1994 ConstructedInterpolants, 86 QuantifiedInterpolants, 822418 SizeOfPredicates, 271 NumberOfNonLiveVariables, 6118 ConjunctsInSsa, 643 ConjunctsInUnsatCore, 39 InterpolantComputations, 12 PerfectInterpolantSequences, 1338/3136 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...