./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.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_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 a0a2e9e6948695d7aa90a7d2948ec209dec0a274 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:40:10,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:40:10,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:40:10,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:40:10,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:40:10,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:40:10,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:40:10,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:40:10,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:40:10,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:40:10,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:40:10,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:40:10,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:40:10,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:40:10,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:40:10,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:40:10,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:40:10,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:40:10,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:40:10,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:40:10,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:40:10,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:40:10,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:40:10,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:40:10,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:40:10,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:40:10,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:40:10,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:40:10,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:40:10,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:40:10,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:40:10,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:40:10,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:40:10,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:40:10,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:40:10,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:40:10,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:40:10,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:40:10,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:40:10,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:40:10,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:40:10,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:40:10,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:40:10,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:40:10,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:40:10,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:40:10,406 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:40:10,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:40:10,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:40:10,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:40:10,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:40:10,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:40:10,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:40:10,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:40:10,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:40:10,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:40:10,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:40:10,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:40:10,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:40:10,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:40:10,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:40:10,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:40:10,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:40:10,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:40:10,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:40:10,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:40:10,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:40:10,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:40:10,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:40:10,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:40:10,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:40:10,412 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_3f5b885b-3812-4fb8-b290-59b05be7149f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0a2e9e6948695d7aa90a7d2948ec209dec0a274 [2020-11-30 00:40:10,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:40:10,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:40:10,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:40:10,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:40:10,738 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:40:10,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2020-11-30 00:40:10,820 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/data/22d09aaee/450e717f344246e28590e1913a33fc50/FLAG075a66686 [2020-11-30 00:40:11,296 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:40:11,297 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2020-11-30 00:40:11,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/data/22d09aaee/450e717f344246e28590e1913a33fc50/FLAG075a66686 [2020-11-30 00:40:11,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/data/22d09aaee/450e717f344246e28590e1913a33fc50 [2020-11-30 00:40:11,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:40:11,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:40:11,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:40:11,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:40:11,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:40:11,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:40:11" (1/1) ... [2020-11-30 00:40:11,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d488df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:11, skipping insertion in model container [2020-11-30 00:40:11,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:40:11" (1/1) ... [2020-11-30 00:40:11,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:40:11,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:40:11,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:40:11,959 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:40:12,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:40:12,024 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:40:12,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12 WrapperNode [2020-11-30 00:40:12,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:40:12,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:40:12,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:40:12,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:40:12,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (1/1) ... [2020-11-30 00:40:12,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (1/1) ... [2020-11-30 00:40:12,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:40:12,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:40:12,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:40:12,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:40:12,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (1/1) ... [2020-11-30 00:40:12,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (1/1) ... [2020-11-30 00:40:12,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (1/1) ... [2020-11-30 00:40:12,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (1/1) ... [2020-11-30 00:40:12,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (1/1) ... [2020-11-30 00:40:12,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (1/1) ... [2020-11-30 00:40:12,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (1/1) ... [2020-11-30 00:40:12,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:40:12,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:40:12,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:40:12,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:40:12,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:40:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:40:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:40:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:40:12,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:40:12,568 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:40:12,568 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-30 00:40:12,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:40:12 BoogieIcfgContainer [2020-11-30 00:40:12,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:40:12,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:40:12,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:40:12,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:40:12,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:40:11" (1/3) ... [2020-11-30 00:40:12,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454e1863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:40:12, skipping insertion in model container [2020-11-30 00:40:12,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:12" (2/3) ... [2020-11-30 00:40:12,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454e1863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:40:12, skipping insertion in model container [2020-11-30 00:40:12,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:40:12" (3/3) ... [2020-11-30 00:40:12,620 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound5.c [2020-11-30 00:40:12,659 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:40:12,664 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 00:40:12,675 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 00:40:12,699 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:40:12,699 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:40:12,700 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:40:12,700 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:40:12,700 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:40:12,700 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:40:12,700 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:40:12,701 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:40:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-30 00:40:12,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:40:12,721 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:12,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:40:12,722 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:12,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:12,728 INFO L82 PathProgramCache]: Analyzing trace with hash 122552587, now seen corresponding path program 1 times [2020-11-30 00:40:12,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:12,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068509578] [2020-11-30 00:40:12,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:12,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068509578] [2020-11-30 00:40:12,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:40:12,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:40:12,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571898893] [2020-11-30 00:40:12,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:40:12,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:12,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:40:12,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:40:12,915 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-30 00:40:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:12,939 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2020-11-30 00:40:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:40:12,941 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 00:40:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:12,952 INFO L225 Difference]: With dead ends: 79 [2020-11-30 00:40:12,953 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 00:40:12,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:40:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 00:40:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-30 00:40:12,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 00:40:12,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-11-30 00:40:13,001 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2020-11-30 00:40:13,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:13,002 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-11-30 00:40:13,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:40:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-11-30 00:40:13,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:40:13,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:13,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:40:13,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:40:13,005 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:13,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:13,006 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-11-30 00:40:13,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:13,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060742262] [2020-11-30 00:40:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:13,031 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:13,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267901284] [2020-11-30 00:40:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:13,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:40:13,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:13,229 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:40:13,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:13,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060742262] [2020-11-30 00:40:13,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:13,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267901284] [2020-11-30 00:40:13,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:40:13,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:40:13,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231566972] [2020-11-30 00:40:13,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:40:13,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:13,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:40:13,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:40:13,320 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2020-11-30 00:40:13,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:13,602 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-11-30 00:40:13,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:40:13,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-30 00:40:13,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:13,604 INFO L225 Difference]: With dead ends: 51 [2020-11-30 00:40:13,604 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 00:40:13,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:40:13,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 00:40:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2020-11-30 00:40:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 00:40:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-30 00:40:13,619 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-11-30 00:40:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:13,620 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-30 00:40:13,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:40:13,620 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-30 00:40:13,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:40:13,621 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:13,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:40:13,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 00:40:13,850 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:13,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:13,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1182912719, now seen corresponding path program 1 times [2020-11-30 00:40:13,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:13,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369328354] [2020-11-30 00:40:13,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:13,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369328354] [2020-11-30 00:40:13,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:40:13,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:40:13,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920612000] [2020-11-30 00:40:13,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:40:13,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:13,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:40:13,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:40:13,954 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-11-30 00:40:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:13,979 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-11-30 00:40:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:40:13,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 00:40:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:13,981 INFO L225 Difference]: With dead ends: 44 [2020-11-30 00:40:13,981 INFO L226 Difference]: Without dead ends: 40 [2020-11-30 00:40:13,982 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 [2020-11-30 00:40:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-30 00:40:13,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-30 00:40:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 00:40:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-11-30 00:40:13,991 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2020-11-30 00:40:13,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:13,991 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-11-30 00:40:13,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:40:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-11-30 00:40:13,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:40:13,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:13,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:40:13,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:40:13,993 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:13,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:13,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1985303953, now seen corresponding path program 1 times [2020-11-30 00:40:13,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:13,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075794040] [2020-11-30 00:40:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:14,010 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:14,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470815767] [2020-11-30 00:40:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:14,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:40:14,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:14,112 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:40:14,113 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:14,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075794040] [2020-11-30 00:40:14,163 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:14,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470815767] [2020-11-30 00:40:14,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:40:14,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:40:14,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478747061] [2020-11-30 00:40:14,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:40:14,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:14,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:40:14,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:40:14,166 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2020-11-30 00:40:14,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:14,432 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-11-30 00:40:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:40:14,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-30 00:40:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:14,434 INFO L225 Difference]: With dead ends: 74 [2020-11-30 00:40:14,434 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 00:40:14,435 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 [2020-11-30 00:40:14,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 00:40:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-11-30 00:40:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-30 00:40:14,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-11-30 00:40:14,452 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2020-11-30 00:40:14,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:14,452 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-11-30 00:40:14,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:40:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-11-30 00:40:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:40:14,454 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:14,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:40:14,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:14,655 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:14,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:14,656 INFO L82 PathProgramCache]: Analyzing trace with hash 290615803, now seen corresponding path program 1 times [2020-11-30 00:40:14,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:14,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028185889] [2020-11-30 00:40:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:14,669 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:14,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16447836] [2020-11-30 00:40:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:14,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:40:14,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:14,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028185889] [2020-11-30 00:40:14,755 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:14,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16447836] [2020-11-30 00:40:14,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:40:14,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:40:14,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013989879] [2020-11-30 00:40:14,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:40:14,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:14,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:40:14,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:40:14,758 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2020-11-30 00:40:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:14,889 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2020-11-30 00:40:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:40:14,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 00:40:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:14,893 INFO L225 Difference]: With dead ends: 104 [2020-11-30 00:40:14,893 INFO L226 Difference]: Without dead ends: 98 [2020-11-30 00:40:14,894 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 [2020-11-30 00:40:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-30 00:40:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2020-11-30 00:40:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 00:40:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2020-11-30 00:40:14,907 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 14 [2020-11-30 00:40:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:14,907 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2020-11-30 00:40:14,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:40:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2020-11-30 00:40:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:40:14,909 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:14,909 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:40:15,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:15,125 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:15,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:15,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1284273978, now seen corresponding path program 1 times [2020-11-30 00:40:15,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:15,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237922449] [2020-11-30 00:40:15,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:15,144 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:15,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614324378] [2020-11-30 00:40:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:15,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:40:15,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:15,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237922449] [2020-11-30 00:40:15,254 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:15,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614324378] [2020-11-30 00:40:15,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:40:15,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:40:15,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931306680] [2020-11-30 00:40:15,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:40:15,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:15,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:40:15,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:40:15,257 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 5 states. [2020-11-30 00:40:15,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:15,298 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2020-11-30 00:40:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:40:15,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-30 00:40:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:15,300 INFO L225 Difference]: With dead ends: 121 [2020-11-30 00:40:15,300 INFO L226 Difference]: Without dead ends: 75 [2020-11-30 00:40:15,301 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 [2020-11-30 00:40:15,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-30 00:40:15,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-30 00:40:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 00:40:15,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2020-11-30 00:40:15,312 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 18 [2020-11-30 00:40:15,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:15,313 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2020-11-30 00:40:15,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:40:15,313 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2020-11-30 00:40:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:40:15,314 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:15,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:40:15,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:15,532 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:15,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:15,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1766286401, now seen corresponding path program 1 times [2020-11-30 00:40:15,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:15,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899033929] [2020-11-30 00:40:15,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:15,543 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:15,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045843574] [2020-11-30 00:40:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:15,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:40:15,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:15,641 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:40:15,641 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:15,672 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:15,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899033929] [2020-11-30 00:40:15,731 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:15,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045843574] [2020-11-30 00:40:15,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:40:15,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:40:15,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434862650] [2020-11-30 00:40:15,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:40:15,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:15,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:40:15,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:40:15,733 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand 6 states. [2020-11-30 00:40:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:15,965 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2020-11-30 00:40:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:40:15,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 00:40:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:15,968 INFO L225 Difference]: With dead ends: 82 [2020-11-30 00:40:15,968 INFO L226 Difference]: Without dead ends: 80 [2020-11-30 00:40:15,969 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 [2020-11-30 00:40:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-30 00:40:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2020-11-30 00:40:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-30 00:40:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-11-30 00:40:15,985 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 18 [2020-11-30 00:40:15,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:15,985 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-11-30 00:40:15,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:40:15,986 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-11-30 00:40:15,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:40:15,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:15,987 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] [2020-11-30 00:40:16,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-30 00:40:16,201 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:16,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:16,202 INFO L82 PathProgramCache]: Analyzing trace with hash -439927536, now seen corresponding path program 1 times [2020-11-30 00:40:16,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:16,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560497812] [2020-11-30 00:40:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:16,214 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:16,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386872679] [2020-11-30 00:40:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:16,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 00:40:16,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:16,322 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:40:16,322 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:16,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:16,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:16,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560497812] [2020-11-30 00:40:16,401 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:16,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386872679] [2020-11-30 00:40:16,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:40:16,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 00:40:16,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722921450] [2020-11-30 00:40:16,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:40:16,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:16,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:40:16,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:40:16,403 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 7 states. [2020-11-30 00:40:16,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:16,865 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2020-11-30 00:40:16,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:40:16,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-30 00:40:16,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:16,867 INFO L225 Difference]: With dead ends: 139 [2020-11-30 00:40:16,867 INFO L226 Difference]: Without dead ends: 133 [2020-11-30 00:40:16,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:40:16,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-30 00:40:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 93. [2020-11-30 00:40:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 00:40:16,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2020-11-30 00:40:16,889 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 24 [2020-11-30 00:40:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:16,890 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2020-11-30 00:40:16,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:40:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2020-11-30 00:40:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:40:16,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:16,892 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] [2020-11-30 00:40:17,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:17,109 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:17,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2103248441, now seen corresponding path program 1 times [2020-11-30 00:40:17,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:17,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633220261] [2020-11-30 00:40:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:17,122 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:17,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703594386] [2020-11-30 00:40:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:17,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:40:17,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:17,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633220261] [2020-11-30 00:40:17,252 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:17,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703594386] [2020-11-30 00:40:17,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:40:17,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:40:17,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235195604] [2020-11-30 00:40:17,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:40:17,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:17,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:40:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:40:17,255 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand 6 states. [2020-11-30 00:40:17,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:17,313 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2020-11-30 00:40:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:40:17,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-30 00:40:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:17,315 INFO L225 Difference]: With dead ends: 100 [2020-11-30 00:40:17,315 INFO L226 Difference]: Without dead ends: 96 [2020-11-30 00:40:17,316 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 [2020-11-30 00:40:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-30 00:40:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-11-30 00:40:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-30 00:40:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2020-11-30 00:40:17,327 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 24 [2020-11-30 00:40:17,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:17,328 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2020-11-30 00:40:17,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:40:17,328 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2020-11-30 00:40:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:40:17,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:17,329 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] [2020-11-30 00:40:17,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:17,557 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:17,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:17,558 INFO L82 PathProgramCache]: Analyzing trace with hash -777084809, now seen corresponding path program 1 times [2020-11-30 00:40:17,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:17,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077593531] [2020-11-30 00:40:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:17,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:17,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319622926] [2020-11-30 00:40:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:17,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 00:40:17,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:17,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077593531] [2020-11-30 00:40:17,752 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:17,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319622926] [2020-11-30 00:40:17,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:40:17,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 00:40:17,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785842934] [2020-11-30 00:40:17,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:40:17,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:17,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:40:17,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:40:17,754 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand 7 states. [2020-11-30 00:40:17,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:17,977 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2020-11-30 00:40:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:40:17,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-30 00:40:17,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:17,979 INFO L225 Difference]: With dead ends: 166 [2020-11-30 00:40:17,979 INFO L226 Difference]: Without dead ends: 103 [2020-11-30 00:40:17,980 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 [2020-11-30 00:40:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-30 00:40:17,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2020-11-30 00:40:17,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 00:40:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2020-11-30 00:40:17,997 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 25 [2020-11-30 00:40:17,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:17,998 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2020-11-30 00:40:17,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:40:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2020-11-30 00:40:18,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 00:40:18,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:18,003 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] [2020-11-30 00:40:18,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 00:40:18,229 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:18,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:18,230 INFO L82 PathProgramCache]: Analyzing trace with hash -187977777, now seen corresponding path program 1 times [2020-11-30 00:40:18,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:18,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338649716] [2020-11-30 00:40:18,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:18,240 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:18,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039117579] [2020-11-30 00:40:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:18,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:40:18,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:18,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338649716] [2020-11-30 00:40:18,367 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:18,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039117579] [2020-11-30 00:40:18,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:40:18,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:40:18,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983532135] [2020-11-30 00:40:18,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:40:18,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:40:18,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:40:18,370 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 6 states. [2020-11-30 00:40:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:18,414 INFO L93 Difference]: Finished difference Result 147 states and 173 transitions. [2020-11-30 00:40:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:40:18,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-30 00:40:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:18,416 INFO L225 Difference]: With dead ends: 147 [2020-11-30 00:40:18,416 INFO L226 Difference]: Without dead ends: 93 [2020-11-30 00:40:18,417 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 [2020-11-30 00:40:18,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-30 00:40:18,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-30 00:40:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 00:40:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2020-11-30 00:40:18,426 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 28 [2020-11-30 00:40:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:18,426 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2020-11-30 00:40:18,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:40:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2020-11-30 00:40:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:40:18,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:18,428 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] [2020-11-30 00:40:18,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:18,641 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:18,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:18,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1237119461, now seen corresponding path program 2 times [2020-11-30 00:40:18,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:18,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136584854] [2020-11-30 00:40:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:18,653 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:18,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698692074] [2020-11-30 00:40:18,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:18,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:40:18,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:40:18,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 00:40:18,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:18,772 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:40:18,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:18,842 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:18,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:18,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136584854] [2020-11-30 00:40:18,885 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:18,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698692074] [2020-11-30 00:40:18,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:40:18,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-30 00:40:18,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403115703] [2020-11-30 00:40:18,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:40:18,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:40:18,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:40:18,888 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand 8 states. [2020-11-30 00:40:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:19,495 INFO L93 Difference]: Finished difference Result 178 states and 204 transitions. [2020-11-30 00:40:19,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:40:19,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-11-30 00:40:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:19,497 INFO L225 Difference]: With dead ends: 178 [2020-11-30 00:40:19,497 INFO L226 Difference]: Without dead ends: 172 [2020-11-30 00:40:19,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:40:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-30 00:40:19,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 113. [2020-11-30 00:40:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-30 00:40:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2020-11-30 00:40:19,518 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 34 [2020-11-30 00:40:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:19,521 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2020-11-30 00:40:19,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:40:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2020-11-30 00:40:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:40:19,525 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:19,525 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] [2020-11-30 00:40:19,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:19,742 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:19,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:19,743 INFO L82 PathProgramCache]: Analyzing trace with hash -426201444, now seen corresponding path program 1 times [2020-11-30 00:40:19,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:19,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026434510] [2020-11-30 00:40:19,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:19,752 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:19,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531299366] [2020-11-30 00:40:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:19,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:40:19,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:19,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026434510] [2020-11-30 00:40:19,895 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:19,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531299366] [2020-11-30 00:40:19,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:40:19,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:40:19,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267029173] [2020-11-30 00:40:19,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:40:19,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:19,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:40:19,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:40:19,898 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand 7 states. [2020-11-30 00:40:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:19,971 INFO L93 Difference]: Finished difference Result 120 states and 140 transitions. [2020-11-30 00:40:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:40:19,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-30 00:40:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:19,973 INFO L225 Difference]: With dead ends: 120 [2020-11-30 00:40:19,973 INFO L226 Difference]: Without dead ends: 116 [2020-11-30 00:40:19,974 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 [2020-11-30 00:40:19,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-30 00:40:19,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-30 00:40:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-30 00:40:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-11-30 00:40:19,985 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 34 [2020-11-30 00:40:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:19,986 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-11-30 00:40:19,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:40:19,986 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-11-30 00:40:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-30 00:40:19,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:19,992 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] [2020-11-30 00:40:20,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-30 00:40:20,217 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:40:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:20,218 INFO L82 PathProgramCache]: Analyzing trace with hash -328235454, now seen corresponding path program 1 times [2020-11-30 00:40:20,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:20,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727379214] [2020-11-30 00:40:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:20,226 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:20,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006471662] [2020-11-30 00:40:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:20,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-30 00:40:20,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:20,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727379214] [2020-11-30 00:40:20,442 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:20,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006471662] [2020-11-30 00:40:20,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:40:20,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-30 00:40:20,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914082825] [2020-11-30 00:40:20,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:40:20,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:20,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:40:20,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:40:20,444 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 9 states. [2020-11-30 00:40:20,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:20,867 INFO L93 Difference]: Finished difference Result 187 states and 218 transitions. [2020-11-30 00:40:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 00:40:20,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-30 00:40:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:20,870 INFO L225 Difference]: With dead ends: 187 [2020-11-30 00:40:20,870 INFO L226 Difference]: Without dead ends: 179 [2020-11-30 00:40:20,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:40:20,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-30 00:40:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 138. [2020-11-30 00:40:20,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-30 00:40:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-11-30 00:40:20,886 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 35 [2020-11-30 00:40:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:20,886 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-11-30 00:40:20,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:40:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-11-30 00:40:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-30 00:40:20,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:20,888 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] [2020-11-30 00:40:21,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-30 00:40:21,113 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]=== [2020-11-30 00:40:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:21,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1249964580, now seen corresponding path program 2 times [2020-11-30 00:40:21,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:21,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754335389] [2020-11-30 00:40:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:21,130 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:21,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872598249] [2020-11-30 00:40:21,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:21,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:40:21,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:40:21,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:40:21,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:21,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754335389] [2020-11-30 00:40:21,268 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:21,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872598249] [2020-11-30 00:40:21,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:40:21,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:40:21,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994824697] [2020-11-30 00:40:21,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:40:21,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:21,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:40:21,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:40:21,271 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 7 states. [2020-11-30 00:40:21,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:21,333 INFO L93 Difference]: Finished difference Result 206 states and 244 transitions. [2020-11-30 00:40:21,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:40:21,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-11-30 00:40:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:21,335 INFO L225 Difference]: With dead ends: 206 [2020-11-30 00:40:21,335 INFO L226 Difference]: Without dead ends: 142 [2020-11-30 00:40:21,336 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 [2020-11-30 00:40:21,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-30 00:40:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-11-30 00:40:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-30 00:40:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2020-11-30 00:40:21,347 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 38 [2020-11-30 00:40:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:21,348 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2020-11-30 00:40:21,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:40:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2020-11-30 00:40:21,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-30 00:40:21,349 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:21,349 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] [2020-11-30 00:40:21,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-30 00:40:21,577 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]=== [2020-11-30 00:40:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:21,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1789775885, now seen corresponding path program 1 times [2020-11-30 00:40:21,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:21,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63695114] [2020-11-30 00:40:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:21,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:21,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637522063] [2020-11-30 00:40:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:40:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:40:21,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:40:21,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:40:21,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63695114] [2020-11-30 00:40:21,735 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:21,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637522063] [2020-11-30 00:40:21,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:40:21,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 00:40:21,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286470364] [2020-11-30 00:40:21,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:40:21,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:21,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:40:21,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:40:21,740 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 8 states. [2020-11-30 00:40:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:40:21,823 INFO L93 Difference]: Finished difference Result 218 states and 257 transitions. [2020-11-30 00:40:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:40:21,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-11-30 00:40:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:40:21,825 INFO L225 Difference]: With dead ends: 218 [2020-11-30 00:40:21,825 INFO L226 Difference]: Without dead ends: 154 [2020-11-30 00:40:21,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:40:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-30 00:40:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-11-30 00:40:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-30 00:40:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 176 transitions. [2020-11-30 00:40:21,843 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 176 transitions. Word has length 43 [2020-11-30 00:40:21,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:40:21,843 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 176 transitions. [2020-11-30 00:40:21,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:40:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 176 transitions. [2020-11-30 00:40:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-30 00:40:21,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:40:21,845 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] [2020-11-30 00:40:22,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:40:22,061 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]=== [2020-11-30 00:40:22,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:40:22,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1351982982, now seen corresponding path program 3 times [2020-11-30 00:40:22,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:40:22,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493631591] [2020-11-30 00:40:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:40:22,072 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:40:22,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240877652] [2020-11-30 00:40:22,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:40:22,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 00:40:22,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:40:22,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:40:22,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:40:22,143 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:40:22,144 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:26,362 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:40:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-30 00:40:32,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493631591] [2020-11-30 00:40:32,555 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:40:32,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240877652] [2020-11-30 00:40:32,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:40:32,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:40:32,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436738357] [2020-11-30 00:40:32,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:40:32,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:40:32,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:40:32,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-11-30 00:40:32,557 INFO L87 Difference]: Start difference. First operand 152 states and 176 transitions. Second operand 6 states. [2020-11-30 00:40:38,711 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 00:40:48,711 WARN L193 SmtUtils]: Spent 9.96 s on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-11-30 00:41:24,646 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 [2020-11-30 00:41:32,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:32,965 INFO L93 Difference]: Finished difference Result 190 states and 215 transitions. [2020-11-30 00:41:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:41:32,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-11-30 00:41:32,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:32,970 INFO L225 Difference]: With dead ends: 190 [2020-11-30 00:41:32,970 INFO L226 Difference]: Without dead ends: 184 [2020-11-30 00:41:32,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=33, Invalid=56, Unknown=5, NotChecked=16, Total=110 [2020-11-30 00:41:32,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-30 00:41:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 134. [2020-11-30 00:41:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-30 00:41:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2020-11-30 00:41:32,994 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 44 [2020-11-30 00:41:32,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:32,995 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2020-11-30 00:41:32,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:41:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2020-11-30 00:41:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-30 00:41:32,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:32,996 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] [2020-11-30 00:41:33,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-30 00:41:33,221 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]=== [2020-11-30 00:41:33,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:33,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1279663409, now seen corresponding path program 2 times [2020-11-30 00:41:33,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:33,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787444242] [2020-11-30 00:41:33,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:33,231 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:41:33,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320751676] [2020-11-30 00:41:33,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:41:33,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:41:33,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:41:33,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:41:33,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:33,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787444242] [2020-11-30 00:41:33,416 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:41:33,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320751676] [2020-11-30 00:41:33,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:41:33,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 00:41:33,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320045693] [2020-11-30 00:41:33,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:41:33,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:33,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:41:33,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:41:33,418 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand 8 states. [2020-11-30 00:41:33,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:33,609 INFO L93 Difference]: Finished difference Result 141 states and 160 transitions. [2020-11-30 00:41:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:41:33,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-11-30 00:41:33,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:33,614 INFO L225 Difference]: With dead ends: 141 [2020-11-30 00:41:33,615 INFO L226 Difference]: Without dead ends: 137 [2020-11-30 00:41:33,617 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 [2020-11-30 00:41:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-30 00:41:33,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-11-30 00:41:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-30 00:41:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 156 transitions. [2020-11-30 00:41:33,648 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 156 transitions. Word has length 44 [2020-11-30 00:41:33,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:33,648 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 156 transitions. [2020-11-30 00:41:33,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:41:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 156 transitions. [2020-11-30 00:41:33,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-30 00:41:33,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:33,650 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] [2020-11-30 00:41:33,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-30 00:41:33,900 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]=== [2020-11-30 00:41:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:33,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1013967437, now seen corresponding path program 2 times [2020-11-30 00:41:33,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:33,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051135623] [2020-11-30 00:41:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:33,909 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:41:33,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439934543] [2020-11-30 00:41:33,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:41:34,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:41:34,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:41:34,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-30 00:41:34,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:34,036 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:41:34,037 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:34,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051135623] [2020-11-30 00:41:34,568 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:41:34,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439934543] [2020-11-30 00:41:34,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:41:34,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-30 00:41:34,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324079959] [2020-11-30 00:41:34,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:41:34,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:34,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:41:34,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:41:34,570 INFO L87 Difference]: Start difference. First operand 137 states and 156 transitions. Second operand 10 states. [2020-11-30 00:41:35,147 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-30 00:41:35,426 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-30 00:41:35,705 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-30 00:41:35,994 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-30 00:41:36,427 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2020-11-30 00:41:36,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:36,893 INFO L93 Difference]: Finished difference Result 199 states and 230 transitions. [2020-11-30 00:41:36,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 00:41:36,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-11-30 00:41:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:36,895 INFO L225 Difference]: With dead ends: 199 [2020-11-30 00:41:36,895 INFO L226 Difference]: Without dead ends: 191 [2020-11-30 00:41:36,896 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 [2020-11-30 00:41:36,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-30 00:41:36,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 143. [2020-11-30 00:41:36,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-30 00:41:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2020-11-30 00:41:36,915 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 45 [2020-11-30 00:41:36,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:36,916 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2020-11-30 00:41:36,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:41:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2020-11-30 00:41:36,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-30 00:41:36,917 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:36,917 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] [2020-11-30 00:41:37,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:41:37,133 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]=== [2020-11-30 00:41:37,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:37,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2111494054, now seen corresponding path program 3 times [2020-11-30 00:41:37,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:37,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817868020] [2020-11-30 00:41:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:37,142 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:41:37,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823569122] [2020-11-30 00:41:37,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:41:37,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 00:41:37,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:41:37,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-30 00:41:37,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:37,268 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:41:37,268 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:37,411 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:41:37,412 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:37,624 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2020-11-30 00:41:37,681 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:37,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:41:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-30 00:41:37,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817868020] [2020-11-30 00:41:37,738 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:41:37,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823569122] [2020-11-30 00:41:37,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:37,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-30 00:41:37,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023491772] [2020-11-30 00:41:37,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:41:37,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:41:37,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:41:37,740 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand 11 states. [2020-11-30 00:41:38,647 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2020-11-30 00:41:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:38,886 INFO L93 Difference]: Finished difference Result 212 states and 246 transitions. [2020-11-30 00:41:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:41:38,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-11-30 00:41:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:38,889 INFO L225 Difference]: With dead ends: 212 [2020-11-30 00:41:38,889 INFO L226 Difference]: Without dead ends: 150 [2020-11-30 00:41:38,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-11-30 00:41:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-30 00:41:38,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2020-11-30 00:41:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-30 00:41:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 161 transitions. [2020-11-30 00:41:38,913 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 161 transitions. Word has length 49 [2020-11-30 00:41:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:38,913 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 161 transitions. [2020-11-30 00:41:38,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:41:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 161 transitions. [2020-11-30 00:41:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-30 00:41:38,914 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:38,915 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] [2020-11-30 00:41:39,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:41:39,125 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]=== [2020-11-30 00:41:39,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:39,126 INFO L82 PathProgramCache]: Analyzing trace with hash -721749736, now seen corresponding path program 2 times [2020-11-30 00:41:39,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:39,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278882584] [2020-11-30 00:41:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:39,139 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:41:39,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695576681] [2020-11-30 00:41:39,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:41:39,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:41:39,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:41:39,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-30 00:41:39,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:39,617 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 17 [2020-11-30 00:41:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:40,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278882584] [2020-11-30 00:41:40,055 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:41:40,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695576681] [2020-11-30 00:41:40,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:41:40,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-30 00:41:40,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669648744] [2020-11-30 00:41:40,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:41:40,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:40,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:41:40,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:41:40,058 INFO L87 Difference]: Start difference. First operand 143 states and 161 transitions. Second operand 11 states. [2020-11-30 00:41:42,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:42,500 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-11-30 00:41:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-30 00:41:42,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-11-30 00:41:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:42,508 INFO L225 Difference]: With dead ends: 241 [2020-11-30 00:41:42,508 INFO L226 Difference]: Without dead ends: 233 [2020-11-30 00:41:42,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:41:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-11-30 00:41:42,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 152. [2020-11-30 00:41:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-30 00:41:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 171 transitions. [2020-11-30 00:41:42,532 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 171 transitions. Word has length 53 [2020-11-30 00:41:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:42,533 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 171 transitions. [2020-11-30 00:41:42,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:41:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 171 transitions. [2020-11-30 00:41:42,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-30 00:41:42,534 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:42,534 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] [2020-11-30 00:41:42,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:41:42,751 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]=== [2020-11-30 00:41:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:42,752 INFO L82 PathProgramCache]: Analyzing trace with hash -207725342, now seen corresponding path program 3 times [2020-11-30 00:41:42,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:42,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959244463] [2020-11-30 00:41:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:42,762 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:41:42,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012149042] [2020-11-30 00:41:42,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:41:42,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 00:41:42,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:41:42,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-30 00:41:42,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:42,866 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:41:42,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:43,118 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:41:43,119 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:43,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:43,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 00:41:43,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959244463] [2020-11-30 00:41:43,511 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:41:43,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012149042] [2020-11-30 00:41:43,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:41:43,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-30 00:41:43,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246660041] [2020-11-30 00:41:43,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:41:43,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:43,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:41:43,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:41:43,514 INFO L87 Difference]: Start difference. First operand 152 states and 171 transitions. Second operand 12 states. [2020-11-30 00:41:44,066 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2020-11-30 00:41:44,361 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-11-30 00:41:45,023 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2020-11-30 00:41:45,495 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-11-30 00:41:46,430 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-11-30 00:41:46,890 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 20 [2020-11-30 00:41:57,888 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2020-11-30 00:42:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:00,710 INFO L93 Difference]: Finished difference Result 289 states and 331 transitions. [2020-11-30 00:42:00,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-30 00:42:00,713 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-11-30 00:42:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:00,715 INFO L225 Difference]: With dead ends: 289 [2020-11-30 00:42:00,715 INFO L226 Difference]: Without dead ends: 277 [2020-11-30 00:42:00,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=321, Invalid=939, Unknown=0, NotChecked=0, Total=1260 [2020-11-30 00:42:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-11-30 00:42:00,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 218. [2020-11-30 00:42:00,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-30 00:42:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 252 transitions. [2020-11-30 00:42:00,758 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 252 transitions. Word has length 53 [2020-11-30 00:42:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:00,759 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 252 transitions. [2020-11-30 00:42:00,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:42:00,759 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 252 transitions. [2020-11-30 00:42:00,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-30 00:42:00,760 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:00,760 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] [2020-11-30 00:42:00,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-30 00:42:00,965 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]=== [2020-11-30 00:42:00,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:00,966 INFO L82 PathProgramCache]: Analyzing trace with hash 731780486, now seen corresponding path program 4 times [2020-11-30 00:42:00,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:00,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901367617] [2020-11-30 00:42:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:00,973 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:42:00,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763572305] [2020-11-30 00:42:00,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:42:01,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:42:01,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:42:01,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-30 00:42:01,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:01,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901367617] [2020-11-30 00:42:01,957 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:42:01,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763572305] [2020-11-30 00:42:01,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:42:01,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-30 00:42:01,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974989510] [2020-11-30 00:42:01,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:42:01,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:01,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:42:01,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:42:01,959 INFO L87 Difference]: Start difference. First operand 218 states and 252 transitions. Second operand 11 states. [2020-11-30 00:42:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:04,354 INFO L93 Difference]: Finished difference Result 287 states and 332 transitions. [2020-11-30 00:42:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 00:42:04,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-11-30 00:42:04,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:04,361 INFO L225 Difference]: With dead ends: 287 [2020-11-30 00:42:04,361 INFO L226 Difference]: Without dead ends: 283 [2020-11-30 00:42:04,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:42:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-11-30 00:42:04,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 224. [2020-11-30 00:42:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-11-30 00:42:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 259 transitions. [2020-11-30 00:42:04,401 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 259 transitions. Word has length 54 [2020-11-30 00:42:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:04,401 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 259 transitions. [2020-11-30 00:42:04,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:42:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 259 transitions. [2020-11-30 00:42:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-30 00:42:04,402 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:04,403 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:04,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-30 00:42:04,617 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]=== [2020-11-30 00:42:04,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:04,618 INFO L82 PathProgramCache]: Analyzing trace with hash 164128141, now seen corresponding path program 1 times [2020-11-30 00:42:04,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:04,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303881347] [2020-11-30 00:42:04,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:04,624 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:42:04,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571455851] [2020-11-30 00:42:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:42:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:04,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:42:04,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-30 00:42:04,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303881347] [2020-11-30 00:42:04,731 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:42:04,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571455851] [2020-11-30 00:42:04,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:04,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:42:04,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067189587] [2020-11-30 00:42:04,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:42:04,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:04,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:42:04,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:42:04,733 INFO L87 Difference]: Start difference. First operand 224 states and 259 transitions. Second operand 5 states. [2020-11-30 00:42:04,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:04,848 INFO L93 Difference]: Finished difference Result 291 states and 334 transitions. [2020-11-30 00:42:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:42:04,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-11-30 00:42:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:04,867 INFO L225 Difference]: With dead ends: 291 [2020-11-30 00:42:04,867 INFO L226 Difference]: Without dead ends: 146 [2020-11-30 00:42:04,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:42:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-30 00:42:04,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-11-30 00:42:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-30 00:42:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2020-11-30 00:42:04,891 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 57 [2020-11-30 00:42:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:04,891 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2020-11-30 00:42:04,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:42:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2020-11-30 00:42:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-30 00:42:04,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:04,893 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:05,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:42:05,106 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]=== [2020-11-30 00:42:05,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:05,106 INFO L82 PathProgramCache]: Analyzing trace with hash 793039886, now seen corresponding path program 3 times [2020-11-30 00:42:05,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:05,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818951065] [2020-11-30 00:42:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:05,114 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:42:05,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833795750] [2020-11-30 00:42:05,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:42:05,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 00:42:05,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:42:05,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-30 00:42:05,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:05,201 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:42:05,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:05,247 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:42:05,248 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:07,709 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-30 00:42:07,718 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:07,722 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:42:11,892 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 00:42:24,347 WARN L193 SmtUtils]: Spent 12.45 s on a formula simplification that was a NOOP. DAG size: 19 [2020-11-30 00:42:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-30 00:42:26,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818951065] [2020-11-30 00:42:26,472 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:42:26,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833795750] [2020-11-30 00:42:26,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:42:26,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-30 00:42:26,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740300415] [2020-11-30 00:42:26,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:42:26,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:26,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:42:26,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=60, Unknown=1, NotChecked=0, Total=90 [2020-11-30 00:42:26,473 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand 10 states. [2020-11-30 00:42:40,677 WARN L193 SmtUtils]: Spent 14.11 s on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-11-30 00:42:54,176 WARN L193 SmtUtils]: Spent 13.45 s on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2020-11-30 00:43:10,511 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-11-30 00:43:21,171 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2020-11-30 00:43:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:21,545 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2020-11-30 00:43:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:43:21,546 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-11-30 00:43:21,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:21,547 INFO L225 Difference]: With dead ends: 139 [2020-11-30 00:43:21,547 INFO L226 Difference]: Without dead ends: 132 [2020-11-30 00:43:21,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=106, Invalid=196, Unknown=4, NotChecked=0, Total=306 [2020-11-30 00:43:21,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-30 00:43:21,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2020-11-30 00:43:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-30 00:43:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2020-11-30 00:43:21,571 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 58 [2020-11-30 00:43:21,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:21,571 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2020-11-30 00:43:21,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:43:21,572 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2020-11-30 00:43:21,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-30 00:43:21,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:21,573 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] [2020-11-30 00:43:21,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-30 00:43:21,777 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]=== [2020-11-30 00:43:21,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:21,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1988325277, now seen corresponding path program 4 times [2020-11-30 00:43:21,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:21,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124034833] [2020-11-30 00:43:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:21,785 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:21,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23699660] [2020-11-30 00:43:21,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:43:21,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 00:43:21,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:43:21,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-30 00:43:21,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:22,381 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 17 [2020-11-30 00:43:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:23,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124034833] [2020-11-30 00:43:23,325 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:23,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23699660] [2020-11-30 00:43:23,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:43:23,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-30 00:43:23,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933651590] [2020-11-30 00:43:23,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:43:23,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:23,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:43:23,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:43:23,327 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand 12 states. [2020-11-30 00:43:25,890 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 00:43:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:26,731 INFO L93 Difference]: Finished difference Result 170 states and 182 transitions. [2020-11-30 00:43:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-30 00:43:26,739 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-11-30 00:43:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:26,741 INFO L225 Difference]: With dead ends: 170 [2020-11-30 00:43:26,741 INFO L226 Difference]: Without dead ends: 163 [2020-11-30 00:43:26,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-11-30 00:43:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-30 00:43:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 120. [2020-11-30 00:43:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-30 00:43:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2020-11-30 00:43:26,758 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 63 [2020-11-30 00:43:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:26,758 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2020-11-30 00:43:26,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:43:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2020-11-30 00:43:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-30 00:43:26,760 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:26,760 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] [2020-11-30 00:43:26,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:43:26,985 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]=== [2020-11-30 00:43:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:26,986 INFO L82 PathProgramCache]: Analyzing trace with hash 77112183, now seen corresponding path program 5 times [2020-11-30 00:43:26,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:26,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095246693] [2020-11-30 00:43:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:26,993 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:26,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058910199] [2020-11-30 00:43:26,994 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:43:27,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-30 00:43:27,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:43:27,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:43:27,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 45 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 00:43:27,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095246693] [2020-11-30 00:43:27,578 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:27,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058910199] [2020-11-30 00:43:27,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:43:27,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 00:43:27,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379294084] [2020-11-30 00:43:27,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:43:27,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:27,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:43:27,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:43:27,580 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand 7 states. [2020-11-30 00:43:28,891 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2020-11-30 00:43:29,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:29,279 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2020-11-30 00:43:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:43:29,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-11-30 00:43:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:29,285 INFO L225 Difference]: With dead ends: 207 [2020-11-30 00:43:29,285 INFO L226 Difference]: Without dead ends: 142 [2020-11-30 00:43:29,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:43:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-30 00:43:29,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 126. [2020-11-30 00:43:29,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-30 00:43:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 134 transitions. [2020-11-30 00:43:29,313 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 134 transitions. Word has length 63 [2020-11-30 00:43:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:29,314 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 134 transitions. [2020-11-30 00:43:29,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:43:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 134 transitions. [2020-11-30 00:43:29,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-30 00:43:29,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:29,315 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] [2020-11-30 00:43:29,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-30 00:43:29,541 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]=== [2020-11-30 00:43:29,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:29,542 INFO L82 PathProgramCache]: Analyzing trace with hash 122644379, now seen corresponding path program 5 times [2020-11-30 00:43:29,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:29,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994554553] [2020-11-30 00:43:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:29,563 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:43:29,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353222238] [2020-11-30 00:43:29,564 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/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 [2020-11-30 00:43:29,646 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-30 00:43:29,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:43:29,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 00:43:29,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:43:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:29,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994554553] [2020-11-30 00:43:29,755 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:43:29,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353222238] [2020-11-30 00:43:29,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:43:29,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-30 00:43:29,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060693704] [2020-11-30 00:43:29,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:43:29,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:29,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:43:29,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:43:29,757 INFO L87 Difference]: Start difference. First operand 126 states and 134 transitions. Second operand 9 states. [2020-11-30 00:43:29,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:29,984 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2020-11-30 00:43:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:43:29,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-11-30 00:43:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:29,990 INFO L225 Difference]: With dead ends: 132 [2020-11-30 00:43:29,990 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:43:29,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:43:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:43:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:43:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:43:29,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:43:29,991 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2020-11-30 00:43:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:29,992 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:43:29,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:43:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:43:29,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:43:30,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-30 00:43:30,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:43:30,378 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 123 [2020-11-30 00:43:30,528 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 103 [2020-11-30 00:43:31,024 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 167 [2020-11-30 00:43:46,532 WARN L193 SmtUtils]: Spent 15.27 s on a formula simplification. DAG size of input: 123 DAG size of output: 63 [2020-11-30 00:43:50,894 WARN L193 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2020-11-30 00:43:59,219 WARN L193 SmtUtils]: Spent 8.32 s on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2020-11-30 00:44:04,551 WARN L193 SmtUtils]: Spent 5.33 s on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2020-11-30 00:47:13,091 WARN L193 SmtUtils]: Spent 3.14 m on a formula simplification. DAG size of input: 162 DAG size of output: 117 [2020-11-30 00:47:23,632 WARN L193 SmtUtils]: Spent 10.54 s on a formula simplification. DAG size of input: 117 DAG size of output: 53 [2020-11-30 00:47:32,767 WARN L193 SmtUtils]: Spent 9.13 s on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2020-11-30 00:47:59,058 WARN L193 SmtUtils]: Spent 26.29 s on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-11-30 00:47:59,063 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:47:59,063 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-30 00:47:59,064 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:47:59,064 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:47:59,064 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:47:59,064 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 00:47:59,064 INFO L274 CegarLoopResult]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2020-11-30 00:47:59,065 INFO L270 CegarLoopResult]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse11 (= ULTIMATE.start_main_~a~0 2)) (.cse12 (* ULTIMATE.start_main_~y~0 2)) (.cse7 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (let ((.cse14 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2))) (.cse15 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (.cse13 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse8 (and .cse7 (= ULTIMATE.start_main_~a~0 1) .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (.cse9 (and .cse7 .cse11 (= ULTIMATE.start_main_~b~0 .cse12) .cse3))) (let ((.cse10 (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0)) (.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (or (and .cse7 .cse14 .cse15 .cse13) .cse8 .cse9)) (.cse6 (<= 6 ~counter~0))) (let ((.cse4 (or (and .cse6 .cse2 .cse3) (and .cse7 .cse14 .cse6 .cse3 .cse15))) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (or (and (or (and (= ULTIMATE.start_main_~q~0 2) .cse11 .cse10 (<= ~counter~0 3) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse12)) .cse13 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (and (<= ~counter~0 4) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0)) .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 4))) (= ULTIMATE.start_main_~q~0 4))) .cse3) (and .cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 8))) .cse2 .cse3)))) (or (and .cse0 .cse1 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) .cse2 (<= 0 ULTIMATE.start_main_~r~0) .cse3) (and .cse4 (= ULTIMATE.start_main_~q~0 9) .cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 9)))) (and .cse4 (= 0 (mod ULTIMATE.start_main_~q~0 (- 2))) .cse1 (= ULTIMATE.start_main_~x~0 (+ (* (* (div (* ULTIMATE.start_main_~q~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2) ULTIMATE.start_main_~r~0))) (and (<= 4 ~counter~0) .cse5) (and .cse0 .cse6 .cse2 .cse3) (and .cse7 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) (<= ~counter~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse3 (<= 0 ~counter~0) (= ULTIMATE.start_main_~b~0 0)) (and (<= (+ (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2) 1) ULTIMATE.start_main_~y~0) (< (+ (div (+ ULTIMATE.start_main_~r~0 (- 2)) 2) 1) ULTIMATE.start_main_~y~0) .cse5) (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (or .cse8 .cse9) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) .cse10 (<= ~counter~0 2))))))) [2020-11-30 00:47:59,065 INFO L274 CegarLoopResult]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2020-11-30 00:47:59,065 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:47:59,066 INFO L274 CegarLoopResult]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2020-11-30 00:47:59,066 INFO L270 CegarLoopResult]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse14 (* ULTIMATE.start_main_~y~0 8)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (* ULTIMATE.start_main_~y~0 4)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse11 (* ULTIMATE.start_main_~y~0 2)) (.cse8 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse10 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0))) (let ((.cse1 (<= 1 ULTIMATE.start_main_~r~0)) (.cse12 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse6 (= ULTIMATE.start_main_~q~0 0)) (.cse0 (or (and .cse2 (= ULTIMATE.start_main_~q~0 8) .cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse14)) .cse7 .cse8 .cse9 .cse10) (and .cse2 .cse7 (or (and .cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse3)) .cse8 .cse9 .cse10 (= ULTIMATE.start_main_~q~0 4)) (and (<= ~counter~0 4) (= ULTIMATE.start_main_~q~0 2) .cse4 (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse11)) .cse8 .cse9 .cse10))))) (.cse13 (<= 5 ~counter~0))) (or (and (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) .cse0) (and .cse1 .cse2 (= ULTIMATE.start_main_~b~0 .cse3) .cse4 (<= 3 ~counter~0) .cse5 .cse6 (<= ~counter~0 3) (= ULTIMATE.start_main_~a~0 4) .cse7) (and (<= 1 ~counter~0) .cse2 (<= ~counter~0 1) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse2 .cse4 (= ULTIMATE.start_main_~a~0 2) .cse5 (= ULTIMATE.start_main_~b~0 .cse11) .cse6 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) .cse7 (<= ~counter~0 2) (<= 2 ~counter~0)) (and .cse1 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse2 .cse12 .cse5 .cse6 .cse7 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse13) (and (<= 4 ~counter~0) .cse1 .cse2 .cse12 (= ULTIMATE.start_main_~b~0 .cse14) .cse5 (= ULTIMATE.start_main_~a~0 8) .cse6 .cse7 (<= (* 8 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0)) (and .cse0 .cse13)))) [2020-11-30 00:47:59,066 INFO L274 CegarLoopResult]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2020-11-30 00:47:59,067 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:47:59,067 INFO L277 CegarLoopResult]: At program point L64(lines 23 65) the Hoare annotation is: true [2020-11-30 00:47:59,067 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:47:59,067 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:47:59,067 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0))) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (let ((.cse2 (or (and .cse1 (or (and .cse3 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) .cse5 .cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 4))) (= ULTIMATE.start_main_~q~0 4)) (and (<= ~counter~0 4) (= ULTIMATE.start_main_~q~0 2) .cse5 (= ULTIMATE.start_main_~a~0 2) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) .cse6 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)))) (and .cse0 .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 8))) .cse1)))) (or (and .cse0 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) .cse1 (<= 0 ULTIMATE.start_main_~r~0)) (and (<= (+ (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2) 1) ULTIMATE.start_main_~y~0) (< (+ (div (+ ULTIMATE.start_main_~r~0 (- 2)) 2) 1) ULTIMATE.start_main_~y~0) .cse2) (and .cse2 (<= 5 ~counter~0)) (and .cse3 (<= 1 ~counter~0) (<= ~counter~0 1) .cse4 .cse5 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse1 .cse6)))) [2020-11-30 00:47:59,068 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:47:59,068 INFO L270 CegarLoopResult]: At program point L15-3(lines 41 42) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (let ((.cse5 (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0)) .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 4))) (= ULTIMATE.start_main_~q~0 4)) (and (<= ~counter~0 4) (= ULTIMATE.start_main_~q~0 2) .cse2 (= ULTIMATE.start_main_~a~0 2) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) .cse4 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (and .cse0 (= ULTIMATE.start_main_~q~0 8) .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 8))) .cse3)))) (or (and (<= 1 ~counter~0) .cse0 (<= ~counter~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse3 .cse4) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~r~0) .cse3) (and .cse5 (<= 5 ~counter~0)) (and (<= (+ (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2) 1) ULTIMATE.start_main_~y~0) (< (+ (div (+ ULTIMATE.start_main_~r~0 (- 2)) 2) 1) ULTIMATE.start_main_~y~0) .cse5)))) [2020-11-30 00:47:59,068 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:47:59,068 INFO L270 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0))) (or (and (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 (= ULTIMATE.start_main_~a~0 2) (<= 3 ~counter~0) .cse6 .cse7 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (<= ~counter~0 3) .cse1 .cse2) (and (<= 4 ~counter~0) (<= 1 ULTIMATE.start_main_~r~0) (<= ~counter~0 4) .cse5 .cse0 .cse6 .cse7 (= ULTIMATE.start_main_~a~0 4) .cse1 .cse2) (and (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse5 .cse0 .cse6 (= ULTIMATE.start_main_~a~0 8) .cse7 .cse1 (<= (* 8 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (<= 5 ~counter~0)) (and .cse5 .cse0 .cse6 .cse7 .cse1 (<= ~counter~0 2) (<= 2 ~counter~0) .cse2 .cse3 .cse4))) [2020-11-30 00:47:59,069 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:47:59,069 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse7 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 8) .cse3 .cse4 (<= (* 8 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) .cse5 (<= 5 ~counter~0)) (and (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) .cse1 .cse4 .cse5 .cse6 .cse7) (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 2) (<= 3 ~counter~0) .cse2 .cse3 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (<= ~counter~0 3) .cse4 .cse5) (and (<= 4 ~counter~0) (<= 1 ULTIMATE.start_main_~r~0) (<= ~counter~0 4) .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~a~0 4) .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= ~counter~0 2) (<= 2 ~counter~0) .cse5 .cse6 .cse7))) [2020-11-30 00:47:59,069 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:47:59,070 INFO L270 CegarLoopResult]: At program point L15-9(lines 51 52) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse8 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 8) .cse3 .cse4 (<= (* 8 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) .cse5 (<= 5 ~counter~0)) (and (<= 4 ~counter~0) (<= 1 ULTIMATE.start_main_~r~0) (<= ~counter~0 4) .cse0 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 4)) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~a~0 2) .cse1 (<= 3 ~counter~0) .cse2 .cse3 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (<= ~counter~0 3) .cse4 .cse5) (and (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) .cse6 .cse4 .cse5 .cse7 .cse8) (and .cse0 .cse6 .cse2 .cse3 .cse4 (<= ~counter~0 2) (<= 2 ~counter~0) .cse5 .cse7 .cse8))) [2020-11-30 00:47:59,070 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:47:59,070 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse2 (<= (* 2 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) (.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and (<= 4 ~counter~0) .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 4)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse1 .cse3 (= ULTIMATE.start_main_~a~0 2) (<= 3 ~counter~0) .cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2)) .cse5 (<= ~counter~0 3) .cse6 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0)) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= ~counter~0 2) (<= 2 ~counter~0) .cse7 (= 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)) .cse1 .cse3 .cse4 .cse5 .cse6 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse7 (<= 5 ~counter~0)))) [2020-11-30 00:47:59,070 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:47:59,070 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-30 00:47:59,071 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:47:59,071 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:47:59,072 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:47:59,072 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:47:59,072 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:47:59,072 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:47:59,073 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:47:59,073 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:47:59,073 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:47:59,073 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:47:59,073 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:47:59,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:47:59 BoogieIcfgContainer [2020-11-30 00:47:59,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:47:59,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:47:59,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:47:59,151 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:47:59,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:40:12" (3/4) ... [2020-11-30 00:47:59,155 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:47:59,171 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-30 00:47:59,171 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:47:59,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:47:59,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:47:59,241 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3f5b885b-3812-4fb8-b290-59b05be7149f/bin/uautomizer/witness.graphml [2020-11-30 00:47:59,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:47:59,243 INFO L168 Benchmark]: Toolchain (without parser) took 467569.39 ms. Allocated memory was 90.2 MB in the beginning and 163.6 MB in the end (delta: 73.4 MB). Free memory was 54.8 MB in the beginning and 77.6 MB in the end (delta: -22.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:47:59,243 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 70.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:47:59,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.02 ms. Allocated memory is still 90.2 MB. Free memory was 54.6 MB in the beginning and 67.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:47:59,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.46 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 65.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:47:59,245 INFO L168 Benchmark]: Boogie Preprocessor took 46.09 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 64.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:47:59,245 INFO L168 Benchmark]: RCFGBuilder took 442.93 ms. Allocated memory is still 90.2 MB. Free memory was 64.3 MB in the beginning and 48.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:47:59,246 INFO L168 Benchmark]: TraceAbstraction took 466578.17 ms. Allocated memory was 90.2 MB in the beginning and 163.6 MB in the end (delta: 73.4 MB). Free memory was 47.7 MB in the beginning and 82.8 MB in the end (delta: -35.1 MB). Peak memory consumption was 79.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:47:59,247 INFO L168 Benchmark]: Witness Printer took 91.54 ms. Allocated memory is still 163.6 MB. Free memory was 82.8 MB in the beginning and 77.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:47:59,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 70.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.02 ms. Allocated memory is still 90.2 MB. Free memory was 54.6 MB in the beginning and 67.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.46 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 65.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.09 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 64.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 442.93 ms. Allocated memory is still 90.2 MB. Free memory was 64.3 MB in the beginning and 48.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 466578.17 ms. Allocated memory was 90.2 MB in the beginning and 163.6 MB in the end (delta: 73.4 MB). Free memory was 47.7 MB in the beginning and 82.8 MB in the end (delta: -35.1 MB). Peak memory consumption was 79.3 MB. Max. memory is 16.1 GB. * Witness Printer took 91.54 ms. Allocated memory is still 163.6 MB. Free memory was 82.8 MB in the beginning and 77.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: (((((((((r < 2 * b && x == r + q * y) && 1 == cond) && cond == 1) && b == a * y) && b == y) && y <= r) || (((((((((1 <= y && 1 == cond) && a == 2) && 3 <= counter) && r == x) && q == 0) && 2 * y <= r) && counter <= 3) && cond == 1) && b == a * y)) || (((((((((4 <= counter && 1 <= r) && counter <= 4) && 1 <= y) && 1 == cond) && r == x) && q == 0) && a == 4) && cond == 1) && b == a * y)) || ((((((((b == a * -1 / -2 * y * 2 && 1 <= y) && 1 == cond) && r == x) && a == 8) && q == 0) && cond == 1) && 8 * y <= r) && 5 <= counter)) || (((((((((1 <= y && 1 == cond) && r == x) && q == 0) && cond == 1) && counter <= 2) && 2 <= counter) && b == a * y) && b == y) && y <= r) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((r < 2 * b && ((((((((1 <= y && q == 8) && 1 == cond) && x == r + y * 8) && cond == 1) && b == a * y) && b == y) && y <= r) || ((1 <= y && cond == 1) && ((((((1 == cond && x == r + y * 4) && b == a * y) && b == y) && y <= r) && q == 4) || (((((((counter <= 4 && q == 2) && 1 == cond) && 2 * r < x) && x == r + y * 2) && b == a * y) && b == y) && y <= r))))) || (((((((((1 <= r && 1 <= y) && b == y * 4) && 1 == cond) && 3 <= counter) && r == x) && q == 0) && counter <= 3) && a == 4) && cond == 1)) || (((((((((1 <= counter && 1 <= y) && counter <= 1) && 1 == cond) && r == x) && q == 0) && cond == 1) && b == a * y) && b == y) && y <= r)) || (((((((((1 <= y && 1 == cond) && a == 2) && r == x) && b == y * 2) && q == 0) && 2 * y <= r) && cond == 1) && counter <= 2) && 2 <= counter)) || ((((((((1 <= r && b == a * -1 / -2 * y * 2) && 1 <= y) && 1 <= cond) && r == x) && q == 0) && cond == 1) && a % -2 == 0) && 5 <= counter)) || (((((((((4 <= counter && 1 <= r) && 1 <= y) && 1 <= cond) && b == y * 8) && r == x) && a == 8) && q == 0) && cond == 1) && 8 * y <= r)) || (((((((((1 <= y && q == 8) && 1 == cond) && x == r + y * 8) && cond == 1) && b == a * y) && b == y) && y <= r) || ((1 <= y && cond == 1) && ((((((1 == cond && x == r + y * 4) && b == a * y) && b == y) && y <= r) && q == 4) || (((((((counter <= 4 && q == 2) && 1 == cond) && 2 * r < x) && x == r + y * 2) && b == a * y) && b == y) && y <= r)))) && 5 <= counter) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((((((((((1 <= y && 1 <= cond) && r == x) && a == 8) && q == 0) && cond == 1) && 8 * y <= r) && b == a * y) && 5 <= counter) || (((((((((4 <= counter && 1 <= r) && counter <= 4) && 1 <= y) && b == y * 4) && 1 <= cond) && r == x) && q == 0) && cond == 1) && b == a * y)) || (((((((((1 <= y && a == 2) && 1 <= cond) && 3 <= counter) && r == x) && q == 0) && 2 * y <= r) && counter <= 3) && cond == 1) && b == a * y)) || ((((((r < 2 * b && x == r + q * y) && 1 == cond) && cond == 1) && b == a * y) && b == y) && y <= r)) || (((((((((1 <= y && 1 == cond) && r == x) && q == 0) && cond == 1) && counter <= 2) && 2 <= counter) && b == a * y) && b == y) && y <= r) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((1 <= counter && 1 <= y) && counter <= 1) && a == q) && 1 == cond) && r == x) && q == 0) && cond == 1) && b == a * y) || ((((x == r + q * y && 1 <= cond) && r < y) && 0 <= r) && cond == 1)) || (((((((((1 <= y && a == q) && 1 == cond) && x == b + r) && cond == 1) && x == r + y * 4) && q == 4) || ((((((((counter <= 4 && q == 2) && 1 == cond) && a == 2) && 2 * r < x) && cond == 1) && x == r + y * 2) && b == a * y) && 2 * y <= x)) || ((((1 <= y && q == 8) && 1 == cond) && x == r + y * 8) && cond == 1)) && 5 <= counter)) || (((b + -1) / 2 + 1 <= y && (r + -2) / 2 + 1 < y) && ((((((((1 <= y && a == q) && 1 == cond) && x == b + r) && cond == 1) && x == r + y * 4) && q == 4) || ((((((((counter <= 4 && q == 2) && 1 == cond) && a == 2) && 2 * r < x) && cond == 1) && x == r + y * 2) && b == a * y) && 2 * y <= x)) || ((((1 <= y && q == 8) && 1 == cond) && x == r + y * 8) && cond == 1))) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((x == r + q * y && 1 <= cond) && r < y) && (((((1 <= y && b == a * -1 / -2 * y * 2) && a % -2 == 0) && b == a * y) || (((1 <= y && a == 1) && cond == 1) && b == y)) || (((1 <= y && a == 2) && b == y * 2) && cond == 1))) && 0 <= r) && cond == 1) || ((((((6 <= counter && (((((1 <= y && b == a * -1 / -2 * y * 2) && a % -2 == 0) && b == a * y) || (((1 <= y && a == 1) && cond == 1) && b == y)) || (((1 <= y && a == 2) && b == y * 2) && cond == 1))) && cond == 1) || ((((1 <= y && b == a * -1 / -2 * y * 2) && 6 <= counter) && cond == 1) && a % -2 == 0)) && q == 9) && 1 <= cond) && x == r + y * 9)) || ((((((6 <= counter && (((((1 <= y && b == a * -1 / -2 * y * 2) && a % -2 == 0) && b == a * y) || (((1 <= y && a == 1) && cond == 1) && b == y)) || (((1 <= y && a == 2) && b == y * 2) && cond == 1))) && cond == 1) || ((((1 <= y && b == a * -1 / -2 * y * 2) && 6 <= counter) && cond == 1) && a % -2 == 0)) && 0 == q % -2) && 1 <= cond) && x == q * -1 / -2 * y * 2 + r)) || (4 <= counter && (((((((((q == 2 && a == 2) && 2 * r < x) && counter <= 3) && x == r + y * 2) && b == a * y) && 2 * y <= x) || ((((counter <= 4 && x == b + r) && (((((1 <= y && b == a * -1 / -2 * y * 2) && a % -2 == 0) && b == a * y) || (((1 <= y && a == 1) && cond == 1) && b == y)) || (((1 <= y && a == 2) && b == y * 2) && cond == 1))) && x == r + y * 4) && q == 4)) && cond == 1) || (((x == r + q * y && x == r + y * 8) && (((((1 <= y && b == a * -1 / -2 * y * 2) && a % -2 == 0) && b == a * y) || (((1 <= y && a == 1) && cond == 1) && b == y)) || (((1 <= y && a == 2) && b == y * 2) && cond == 1))) && cond == 1)))) || (((x == r + q * y && 6 <= counter) && (((((1 <= y && b == a * -1 / -2 * y * 2) && a % -2 == 0) && b == a * y) || (((1 <= y && a == 1) && cond == 1) && b == y)) || (((1 <= y && a == 2) && b == y * 2) && cond == 1))) && cond == 1)) || (((((((1 <= y && a == q) && counter <= 0) && r == x) && q == 0) && cond == 1) && 0 <= counter) && b == 0)) || (((b + -1) / 2 + 1 <= y && (r + -2) / 2 + 1 < y) && (((((((((q == 2 && a == 2) && 2 * r < x) && counter <= 3) && x == r + y * 2) && b == a * y) && 2 * y <= x) || ((((counter <= 4 && x == b + r) && (((((1 <= y && b == a * -1 / -2 * y * 2) && a % -2 == 0) && b == a * y) || (((1 <= y && a == 1) && cond == 1) && b == y)) || (((1 <= y && a == 2) && b == y * 2) && cond == 1))) && x == r + y * 4) && q == 4)) && cond == 1) || (((x == r + q * y && x == r + y * 8) && (((((1 <= y && b == a * -1 / -2 * y * 2) && a % -2 == 0) && b == a * y) || (((1 <= y && a == 1) && cond == 1) && b == y)) || (((1 <= y && a == 2) && b == y * 2) && cond == 1))) && cond == 1)))) || (((((q == 1 && x == r + y) && ((((1 <= y && a == 1) && cond == 1) && b == y) || (((1 <= y && a == 2) && b == y * 2) && cond == 1))) && y <= x) && 2 * r < x) && counter <= 2) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((1 <= y && 1 == cond) && r == x) && a == 8) && q == 0) && cond == 1) && 8 * y <= r) && b == a * y) && 5 <= counter) || ((((((r < 2 * b && x == r + q * y) && 1 == cond) && cond == 1) && b == a * y) && b == y) && y <= r)) || (((((((((1 <= y && 1 == cond) && a == 2) && 3 <= counter) && r == x) && q == 0) && 2 * y <= r) && counter <= 3) && cond == 1) && b == a * y)) || (((((((((4 <= counter && 1 <= r) && counter <= 4) && 1 <= y) && 1 == cond) && r == x) && q == 0) && a == 4) && cond == 1) && b == a * y)) || (((((((((1 <= y && 1 == cond) && r == x) && q == 0) && cond == 1) && counter <= 2) && 2 <= counter) && 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) || (((b + -1) / 2 + 1 <= y && (r + -2) / 2 + 1 < y) && ((cond == 1 && ((((((1 <= y && a == q) && 1 == cond) && x == b + r) && x == r + y * 4) && q == 4) || (((((((counter <= 4 && q == 2) && 1 == cond) && a == 2) && 2 * r < x) && x == r + y * 2) && b == a * y) && 2 * y <= x))) || (((x == r + q * y && 1 <= y) && x == r + y * 8) && cond == 1)))) || (((cond == 1 && ((((((1 <= y && a == q) && 1 == cond) && x == b + r) && x == r + y * 4) && q == 4) || (((((((counter <= 4 && q == 2) && 1 == cond) && a == 2) && 2 * r < x) && x == r + y * 2) && b == a * y) && 2 * y <= x))) || (((x == r + q * y && 1 <= y) && x == r + y * 8) && cond == 1)) && 5 <= counter)) || ((((((((1 <= y && 1 <= counter) && counter <= 1) && x == b + r) && 1 == cond) && r == x) && q == 0) && cond == 1) && b == a * y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((4 <= counter && 1 <= r) && 1 <= y) && b == y * 4) && 2 * b <= r) && 1 == cond) && r == x) && q == 0) && cond == 1) && b == a * y) || (((((((((1 <= y && 1 == cond) && a == 2) && 3 <= counter) && r == x) && b == y * 2) && q == 0) && counter <= 3) && cond == 1) && 2 * y <= r)) || (((((((((1 <= y && 2 * b <= r) && 1 == cond) && r == x) && q == 0) && cond == 1) && counter <= 2) && 2 <= counter) && b == a * y) && b == y)) || (((((((((1 <= r && b == a * -1 / -2 * y * 2) && 1 <= y) && 1 == cond) && r == x) && q == 0) && cond == 1) && a % -2 == 0) && b == a * y) && 5 <= counter) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 197.4s, OverallIterations: 28, TraceHistogramMax: 5, AutomataDifference: 149.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 268.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 957 SDtfs, 2235 SDslu, 2538 SDs, 0 SdLazy, 2976 SolverSat, 655 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 76.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1115 GetRequests, 829 SyntacticMatches, 3 SemanticMatches, 283 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 79.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 28 MinimizatonAttempts, 605 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 58 NumberOfFragments, 2347 HoareAnnotationTreeSize, 10 FomulaSimplifications, 11990592 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 483401 FormulaSimplificationTreeSizeReductionInter, 267.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 38.6s InterpolantComputationTime, 1017 NumberOfCodeBlocks, 919 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 989 ConstructedInterpolants, 0 QuantifiedInterpolants, 328647 SizeOfPredicates, 176 NumberOfNonLiveVariables, 3666 ConjunctsInSsa, 456 ConjunctsInUnsatCore, 28 InterpolantComputations, 9 PerfectInterpolantSequences, 370/750 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...