./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/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 d906cff84b4353e33f2b63d23acb59c8877e00f4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:49:56,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:49:56,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:49:56,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:49:56,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:49:56,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:49:56,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:49:56,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:49:56,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:49:56,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:49:56,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:49:56,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:49:56,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:49:56,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:49:56,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:49:56,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:49:56,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:49:56,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:49:56,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:49:56,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:49:56,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:49:56,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:49:56,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:49:56,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:49:56,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:49:56,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:49:56,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:49:56,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:49:56,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:49:56,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:49:56,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:49:56,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:49:56,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:49:56,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:49:56,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:49:56,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:49:56,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:49:56,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:49:56,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:49:56,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:49:56,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:49:56,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:49:56,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:49:56,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:49:56,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:49:56,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:49:56,472 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:49:56,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:49:56,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:49:56,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:49:56,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:49:56,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:49:56,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:49:56,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:49:56,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:49:56,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:49:56,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:49:56,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:49:56,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:49:56,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:49:56,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:49:56,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:49:56,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:49:56,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:49:56,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:49:56,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:49:56,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:49:56,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:49:56,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:49:56,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:49:56,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:49:56,478 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_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d906cff84b4353e33f2b63d23acb59c8877e00f4 [2020-11-29 19:49:56,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:49:56,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:49:56,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:49:56,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:49:56,820 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:49:56,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2020-11-29 19:49:56,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/data/479e279f1/ac58ab6ffb20496aad5fb8d2528d0c6d/FLAG8fc3824e0 [2020-11-29 19:49:57,387 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:49:57,392 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2020-11-29 19:49:57,404 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/data/479e279f1/ac58ab6ffb20496aad5fb8d2528d0c6d/FLAG8fc3824e0 [2020-11-29 19:49:57,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/data/479e279f1/ac58ab6ffb20496aad5fb8d2528d0c6d [2020-11-29 19:49:57,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:49:57,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:49:57,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:49:57,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:49:57,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:49:57,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:49:57" (1/1) ... [2020-11-29 19:49:57,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da5e281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:57, skipping insertion in model container [2020-11-29 19:49:57,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:49:57" (1/1) ... [2020-11-29 19:49:57,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:49:57,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:49:57,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:49:58,004 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:49:58,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:49:58,044 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:49:58,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58 WrapperNode [2020-11-29 19:49:58,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:49:58,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:49:58,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:49:58,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:49:58,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (1/1) ... [2020-11-29 19:49:58,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (1/1) ... [2020-11-29 19:49:58,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:49:58,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:49:58,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:49:58,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:49:58,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (1/1) ... [2020-11-29 19:49:58,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (1/1) ... [2020-11-29 19:49:58,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (1/1) ... [2020-11-29 19:49:58,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (1/1) ... [2020-11-29 19:49:58,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (1/1) ... [2020-11-29 19:49:58,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (1/1) ... [2020-11-29 19:49:58,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (1/1) ... [2020-11-29 19:49:58,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:49:58,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:49:58,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:49:58,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:49:58,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:49:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:49:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:49:58,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:49:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:49:58,545 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:49:58,545 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-11-29 19:49:58,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:49:58 BoogieIcfgContainer [2020-11-29 19:49:58,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:49:58,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:49:58,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:49:58,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:49:58,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:49:57" (1/3) ... [2020-11-29 19:49:58,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24893351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:49:58, skipping insertion in model container [2020-11-29 19:49:58,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:49:58" (2/3) ... [2020-11-29 19:49:58,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24893351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:49:58, skipping insertion in model container [2020-11-29 19:49:58,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:49:58" (3/3) ... [2020-11-29 19:49:58,557 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound2.c [2020-11-29 19:49:58,568 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:49:58,572 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 19:49:58,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 19:49:58,609 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:49:58,609 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:49:58,609 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:49:58,610 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:49:58,610 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:49:58,610 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:49:58,610 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:49:58,610 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:49:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-29 19:49:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:49:58,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:49:58,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:49:58,659 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:49:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:49:58,665 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-11-29 19:49:58,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:49:58,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847932999] [2020-11-29 19:49:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:49:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:49:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:49:58,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847932999] [2020-11-29 19:49:58,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:49:58,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:49:58,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624196803] [2020-11-29 19:49:58,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:49:58,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:49:58,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:49:58,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:49:58,929 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-29 19:49:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:49:58,947 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2020-11-29 19:49:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:49:58,948 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 19:49:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:49:58,958 INFO L225 Difference]: With dead ends: 53 [2020-11-29 19:49:58,959 INFO L226 Difference]: Without dead ends: 24 [2020-11-29 19:49:58,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:49:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-29 19:49:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-29 19:49:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 19:49:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-29 19:49:58,999 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2020-11-29 19:49:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:49:59,000 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-29 19:49:59,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:49:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-29 19:49:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:49:59,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:49:59,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:49:59,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:49:59,002 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:49:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:49:59,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-11-29 19:49:59,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:49:59,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951123981] [2020-11-29 19:49:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:49:59,032 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:49:59,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951663986] [2020-11-29 19:49:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:49:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:49:59,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:49:59,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:49:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:49:59,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951123981] [2020-11-29 19:49:59,226 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:49:59,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951663986] [2020-11-29 19:49:59,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:49:59,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:49:59,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931180300] [2020-11-29 19:49:59,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:49:59,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:49:59,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:49:59,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:49:59,230 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2020-11-29 19:49:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:49:59,358 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2020-11-29 19:49:59,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:49:59,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 19:49:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:49:59,360 INFO L225 Difference]: With dead ends: 41 [2020-11-29 19:49:59,360 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 19:49:59,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:49:59,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 19:49:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2020-11-29 19:49:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 19:49:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-11-29 19:49:59,367 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2020-11-29 19:49:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:49:59,367 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-11-29 19:49:59,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:49:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-11-29 19:49:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:49:59,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:49:59,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:49:59,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 19:49:59,569 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:49:59,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:49:59,570 INFO L82 PathProgramCache]: Analyzing trace with hash -936562870, now seen corresponding path program 1 times [2020-11-29 19:49:59,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:49:59,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88869431] [2020-11-29 19:49:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:49:59,600 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:49:59,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793055130] [2020-11-29 19:49:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:49:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:49:59,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 19:49:59,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:49:59,720 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:49:59,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:49:59,785 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:49:59,786 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:49:59,822 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:50:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:50:10,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88869431] [2020-11-29 19:50:10,409 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:50:10,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793055130] [2020-11-29 19:50:10,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:50:10,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 19:50:10,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337819565] [2020-11-29 19:50:10,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:50:10,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:50:10,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:50:10,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=48, Unknown=5, NotChecked=0, Total=72 [2020-11-29 19:50:10,412 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 9 states. [2020-11-29 19:50:15,418 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-11-29 19:50:15,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:50:15,977 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-11-29 19:50:15,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:50:15,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-11-29 19:50:15,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:50:15,979 INFO L225 Difference]: With dead ends: 43 [2020-11-29 19:50:15,979 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 19:50:15,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=79, Invalid=156, Unknown=5, NotChecked=0, Total=240 [2020-11-29 19:50:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 19:50:15,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-11-29 19:50:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 19:50:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-11-29 19:50:15,985 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 14 [2020-11-29 19:50:15,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:50:15,985 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-11-29 19:50:15,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:50:15,985 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-11-29 19:50:15,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:50:15,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:50:15,986 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:50:16,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:16,187 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:50:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:50:16,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1032624077, now seen corresponding path program 1 times [2020-11-29 19:50:16,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:50:16,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543852120] [2020-11-29 19:50:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:50:16,221 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:50:16,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502271106] [2020-11-29 19:50:16,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:50:16,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 19:50:16,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:50:16,340 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 19:50:16,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:16,681 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 24 [2020-11-29 19:50:16,732 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:16,743 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:50:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:50:16,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543852120] [2020-11-29 19:50:16,881 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:50:16,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502271106] [2020-11-29 19:50:16,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:50:16,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 19:50:16,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720212809] [2020-11-29 19:50:16,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:50:16,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:50:16,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:50:16,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:50:16,884 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 8 states. [2020-11-29 19:50:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:50:19,588 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2020-11-29 19:50:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:50:19,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-29 19:50:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:50:19,592 INFO L225 Difference]: With dead ends: 47 [2020-11-29 19:50:19,592 INFO L226 Difference]: Without dead ends: 45 [2020-11-29 19:50:19,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:50:19,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-29 19:50:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2020-11-29 19:50:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:50:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-11-29 19:50:19,602 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 15 [2020-11-29 19:50:19,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:50:19,603 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-11-29 19:50:19,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:50:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-11-29 19:50:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:50:19,604 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:50:19,604 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:50:19,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:19,811 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:50:19,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:50:19,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1949134433, now seen corresponding path program 1 times [2020-11-29 19:50:19,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:50:19,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109646744] [2020-11-29 19:50:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:50:19,827 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:50:19,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082807483] [2020-11-29 19:50:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:50:19,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 19:50:19,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:50:19,944 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 19:50:19,944 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:19,993 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 19:50:19,993 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:20,202 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:50:20,203 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:20,605 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-11-29 19:50:20,636 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:20,641 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,648 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,658 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,670 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,676 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,680 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,687 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,691 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,708 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,714 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,718 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,723 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,729 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,734 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,740 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:50:20,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109646744] [2020-11-29 19:50:20,938 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:50:20,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082807483] [2020-11-29 19:50:20,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:50:20,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-29 19:50:20,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212393185] [2020-11-29 19:50:20,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 19:50:20,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:50:20,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 19:50:20,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:50:20,940 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 12 states. [2020-11-29 19:50:21,333 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-11-29 19:50:21,583 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-11-29 19:50:21,886 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-11-29 19:50:22,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:50:22,050 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-11-29 19:50:22,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:50:22,051 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-11-29 19:50:22,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:50:22,052 INFO L225 Difference]: With dead ends: 57 [2020-11-29 19:50:22,052 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 19:50:22,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-11-29 19:50:22,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 19:50:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-11-29 19:50:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 19:50:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-11-29 19:50:22,059 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 16 [2020-11-29 19:50:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:50:22,059 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-11-29 19:50:22,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 19:50:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-11-29 19:50:22,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:50:22,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:50:22,060 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:50:22,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:22,277 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:50:22,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:50:22,278 INFO L82 PathProgramCache]: Analyzing trace with hash 296333352, now seen corresponding path program 1 times [2020-11-29 19:50:22,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:50:22,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799973068] [2020-11-29 19:50:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:50:22,291 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:50:22,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149539194] [2020-11-29 19:50:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:50:22,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 19:50:22,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:50:22,407 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 19:50:22,408 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:22,674 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:22,679 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:50:22,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799973068] [2020-11-29 19:50:22,801 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:50:22,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149539194] [2020-11-29 19:50:22,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:50:22,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 19:50:22,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635631071] [2020-11-29 19:50:22,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:50:22,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:50:22,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:50:22,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:50:22,803 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 8 states. [2020-11-29 19:50:23,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:50:23,312 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-11-29 19:50:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:50:23,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-29 19:50:23,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:50:23,315 INFO L225 Difference]: With dead ends: 56 [2020-11-29 19:50:23,315 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 19:50:23,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:50:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 19:50:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-11-29 19:50:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 19:50:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-29 19:50:23,321 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 17 [2020-11-29 19:50:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:50:23,322 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-29 19:50:23,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:50:23,326 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-11-29 19:50:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:50:23,328 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:50:23,328 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:50:23,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 19:50:23,529 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:50:23,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:50:23,529 INFO L82 PathProgramCache]: Analyzing trace with hash 296392934, now seen corresponding path program 1 times [2020-11-29 19:50:23,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:50:23,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612683164] [2020-11-29 19:50:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:50:23,544 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:50:23,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731764892] [2020-11-29 19:50:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:50:23,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-29 19:50:23,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:50:23,759 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 19:50:23,759 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:23,824 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 19:50:23,824 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:23,971 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:50:23,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:24,298 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-29 19:50:24,540 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2020-11-29 19:50:24,752 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-11-29 19:50:24,782 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:24,787 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:24,795 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:24,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:24,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:24,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:24,820 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:24,827 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:24,833 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:24,981 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-11-29 19:50:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:50:25,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612683164] [2020-11-29 19:50:25,026 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:50:25,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731764892] [2020-11-29 19:50:25,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:50:25,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-29 19:50:25,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501466629] [2020-11-29 19:50:25,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 19:50:25,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:50:25,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 19:50:25,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:50:25,028 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 14 states. [2020-11-29 19:50:25,413 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-11-29 19:50:25,686 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-11-29 19:50:26,058 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-11-29 19:50:26,334 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-11-29 19:50:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:50:26,828 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-11-29 19:50:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 19:50:26,829 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-29 19:50:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:50:26,830 INFO L225 Difference]: With dead ends: 55 [2020-11-29 19:50:26,830 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 19:50:26,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2020-11-29 19:50:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 19:50:26,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-29 19:50:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 19:50:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-11-29 19:50:26,836 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 17 [2020-11-29 19:50:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:50:26,836 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-11-29 19:50:26,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 19:50:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-11-29 19:50:26,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:50:26,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:50:26,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:50:27,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:27,063 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:50:27,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:50:27,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1940986474, now seen corresponding path program 1 times [2020-11-29 19:50:27,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:50:27,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197603196] [2020-11-29 19:50:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:50:27,075 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:50:27,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17842758] [2020-11-29 19:50:27,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:50:27,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:50:27,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:50:27,165 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:27,172 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:50:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:50:27,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197603196] [2020-11-29 19:50:27,188 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:50:27,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17842758] [2020-11-29 19:50:27,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:50:27,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:50:27,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307261200] [2020-11-29 19:50:27,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:50:27,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:50:27,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:50:27,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:50:27,190 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2020-11-29 19:50:27,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:50:27,246 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-11-29 19:50:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:50:27,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-29 19:50:27,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:50:27,249 INFO L225 Difference]: With dead ends: 43 [2020-11-29 19:50:27,250 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 19:50:27,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:50:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 19:50:27,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-11-29 19:50:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 19:50:27,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-29 19:50:27,257 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 18 [2020-11-29 19:50:27,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:50:27,258 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-29 19:50:27,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:50:27,258 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-29 19:50:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:50:27,259 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:50:27,259 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:50:27,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:27,484 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:50:27,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:50:27,484 INFO L82 PathProgramCache]: Analyzing trace with hash -39736575, now seen corresponding path program 2 times [2020-11-29 19:50:27,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:50:27,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736630869] [2020-11-29 19:50:27,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:50:27,495 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:50:27,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711168800] [2020-11-29 19:50:27,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:27,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:50:27,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:50:27,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 19:50:27,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:50:27,592 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 19:50:27,592 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:27,651 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:27,656 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:27,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 19:50:27,673 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:27,677 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:27,679 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 19:50:27,683 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:50:27,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:27,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:27,691 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:27,693 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 19:50:27,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:50:27,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:27,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:27,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 19:50:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:50:28,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736630869] [2020-11-29 19:50:28,016 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:50:28,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711168800] [2020-11-29 19:50:28,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:50:28,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 19:50:28,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009591970] [2020-11-29 19:50:28,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:50:28,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:50:28,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:50:28,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:50:28,018 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-11-29 19:50:28,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:50:28,419 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-11-29 19:50:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:50:28,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-29 19:50:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:50:28,422 INFO L225 Difference]: With dead ends: 70 [2020-11-29 19:50:28,422 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 19:50:28,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:50:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 19:50:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2020-11-29 19:50:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 19:50:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-11-29 19:50:28,429 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 19 [2020-11-29 19:50:28,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:50:28,429 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-11-29 19:50:28,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:50:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-11-29 19:50:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:50:28,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:50:28,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:50:28,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 19:50:28,630 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:50:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:50:28,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1229274707, now seen corresponding path program 1 times [2020-11-29 19:50:28,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:50:28,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132530776] [2020-11-29 19:50:28,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:50:28,654 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:50:28,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710359855] [2020-11-29 19:50:28,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:50:28,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 19:50:28,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:50:28,745 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 19:50:28,746 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:28,798 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:28,802 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:28,805 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:28,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 19:50:28,816 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:28,818 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 19:50:28,822 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:28,823 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:28,826 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 19:50:28,829 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:50:28,831 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-29 19:50:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:50:28,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132530776] [2020-11-29 19:50:28,996 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:50:28,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710359855] [2020-11-29 19:50:28,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:50:28,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 19:50:28,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024778225] [2020-11-29 19:50:28,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:50:28,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:50:28,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:50:28,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:50:28,998 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 7 states. [2020-11-29 19:50:29,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:50:29,277 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2020-11-29 19:50:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:50:29,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-11-29 19:50:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:50:29,279 INFO L225 Difference]: With dead ends: 73 [2020-11-29 19:50:29,279 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 19:50:29,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:50:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 19:50:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2020-11-29 19:50:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 19:50:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-29 19:50:29,286 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2020-11-29 19:50:29,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:50:29,296 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-29 19:50:29,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:50:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-29 19:50:29,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 19:50:29,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:50:29,298 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:50:29,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:29,515 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:50:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:50:29,515 INFO L82 PathProgramCache]: Analyzing trace with hash 549957402, now seen corresponding path program 1 times [2020-11-29 19:50:29,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:50:29,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689587062] [2020-11-29 19:50:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:50:29,532 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:50:29,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899232465] [2020-11-29 19:50:29,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:50:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:50:29,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 43 conjunts are in the unsatisfiable core [2020-11-29 19:50:29,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:50:29,622 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 19:50:29,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:29,666 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 19:50:29,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:30,140 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-11-29 19:50:36,907 WARN L193 SmtUtils]: Spent 6.69 s on a formula simplification that was a NOOP. DAG size: 47 [2020-11-29 19:50:36,909 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:50:36,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:39,398 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-11-29 19:50:42,058 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 19:50:42,096 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,103 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,115 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,123 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,136 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,142 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,154 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,161 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,169 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,181 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,186 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,213 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,233 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,244 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,252 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,265 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,273 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,281 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,286 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,302 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,308 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,315 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,321 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,326 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,363 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,378 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,385 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,390 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,396 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,406 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,413 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,418 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,425 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:50:42,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:51:07,339 WARN L193 SmtUtils]: Spent 24.86 s on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-29 19:51:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:07,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689587062] [2020-11-29 19:51:07,465 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:07,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899232465] [2020-11-29 19:51:07,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:51:07,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-29 19:51:07,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142288685] [2020-11-29 19:51:07,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 19:51:07,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:07,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 19:51:07,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:51:07,475 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 13 states. [2020-11-29 19:51:10,612 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-11-29 19:51:11,065 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 19:51:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:11,407 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-11-29 19:51:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 19:51:11,408 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-11-29 19:51:11,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:11,408 INFO L225 Difference]: With dead ends: 47 [2020-11-29 19:51:11,408 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:51:11,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:51:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:51:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:51:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:51:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:51:11,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-29 19:51:11,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:11,409 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:51:11,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 19:51:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:51:11,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:51:11,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:51:11,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:51:24,376 WARN L193 SmtUtils]: Spent 12.57 s on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2020-11-29 19:51:37,349 WARN L193 SmtUtils]: Spent 12.97 s on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2020-11-29 19:51:47,923 WARN L193 SmtUtils]: Spent 10.57 s on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-11-29 19:51:47,926 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 19:51:47,926 INFO L274 CegarLoopResult]: For program point L44(lines 44 54) no Hoare annotation was computed. [2020-11-29 19:51:47,926 INFO L274 CegarLoopResult]: For program point L40(lines 40 54) no Hoare annotation was computed. [2020-11-29 19:51:47,926 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 19:51:47,926 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:51:47,926 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:51:47,926 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 19:51:47,927 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-29 19:51:47,927 INFO L270 CegarLoopResult]: At program point L12-1(lines 37 38) the Hoare annotation is: (let ((.cse14 (+ ULTIMATE.start_main_~b~0 1)) (.cse13 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0)) (.cse17 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)) (.cse20 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (let ((.cse6 (= ULTIMATE.start_main_~q~0 0)) (.cse12 (<= 0 ULTIMATE.start_main_~a~0)) (.cse8 (not (= ULTIMATE.start_main_~y~0 0))) (.cse0 (div ULTIMATE.start_main_~x~0 2)) (.cse5 (div ULTIMATE.start_main_~y~0 2)) (.cse2 (= .cse20 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~q~0))) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse10 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (<= ULTIMATE.start_main_~x~0 2)) (.cse19 (+ .cse13 .cse17 ULTIMATE.start_main_~p~0 .cse20)) (.cse18 (+ ULTIMATE.start_main_~a~0 1)) (.cse15 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 0 ULTIMATE.start_main_~x~0)) (.cse11 (= ULTIMATE.start_main_~p~0 1)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse16 (= ULTIMATE.start_main_~y~0 .cse14)) (.cse9 (<= ULTIMATE.start_main_~y~0 2))) (or (and (<= 0 (* 2 ULTIMATE.start_main_~b~0)) (= ULTIMATE.start_main_~a~0 .cse0) .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_main_~a~0 0)) (= ULTIMATE.start_main_~b~0 .cse5) .cse6 .cse7 .cse8 .cse9) (and .cse10 (<= ULTIMATE.start_main_~a~0 2) .cse2 .cse3 .cse11 .cse12 .cse6 .cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse9) (and (= .cse13 ULTIMATE.start_main_~q~0) (<= 0 .cse14) .cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse15 .cse4 .cse11 (<= 1 (mod .cse14 2)) .cse7 .cse16 (= (mod ULTIMATE.start_main_~a~0 2) 0) .cse9) (and (= ULTIMATE.start_main_~q~0 (+ .cse13 .cse17 ULTIMATE.start_main_~p~0)) .cse1 (= .cse0 .cse18) (<= 0 ULTIMATE.start_main_~y~0) .cse15 (= .cse5 .cse14) .cse12 .cse7 .cse8 (= (+ ULTIMATE.start_main_~q~0 (* .cse0 ULTIMATE.start_main_~p~0 .cse5)) .cse19) .cse9) (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~b~0) .cse10 (<= 0 .cse18) (<= .cse18 ULTIMATE.start_main_~x~0) .cse1 (<= 1 (mod .cse18 2)) .cse2 .cse3 .cse11 .cse7 .cse9) (and .cse10 .cse1 (not (= (mod ULTIMATE.start_main_~x~0 2) 0)) (= (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~q~0) .cse19) (= ULTIMATE.start_main_~x~0 .cse18) .cse15 .cse4 .cse11 .cse7 (not (= (mod ULTIMATE.start_main_~y~0 2) 0)) .cse16 .cse9)))) [2020-11-29 19:51:47,927 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-29 19:51:47,927 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~b~0 1)) (.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0)) (.cse9 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)) (.cse15 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (let ((.cse2 (<= ULTIMATE.start_main_~x~0 2)) (.cse11 (+ ULTIMATE.start_main_~a~0 1)) (.cse13 (+ .cse0 .cse9 ULTIMATE.start_main_~p~0 .cse15)) (.cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 0 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~y~0 .cse1)) (.cse8 (<= ULTIMATE.start_main_~y~0 2)) (.cse14 (<= 1 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_main_~p~0 1)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= .cse0 ULTIMATE.start_main_~q~0) (<= 0 .cse1) .cse2 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse3 .cse4 .cse5 (<= 1 (mod .cse1 2)) .cse6 .cse7 (= (mod ULTIMATE.start_main_~a~0 2) 0) .cse8) (let ((.cse10 (div ULTIMATE.start_main_~x~0 2)) (.cse12 (div ULTIMATE.start_main_~y~0 2))) (and (= ULTIMATE.start_main_~q~0 (+ .cse0 .cse9 ULTIMATE.start_main_~p~0)) .cse2 (= .cse10 .cse11) .cse3 (= .cse12 .cse1) (<= 0 ULTIMATE.start_main_~b~0) (<= 0 ULTIMATE.start_main_~a~0) .cse6 (= (+ ULTIMATE.start_main_~q~0 (* .cse10 ULTIMATE.start_main_~p~0 .cse12)) .cse13) .cse8)) (and .cse14 .cse2 (not (= (mod ULTIMATE.start_main_~x~0 2) 0)) (= ULTIMATE.start_main_~x~0 .cse11) (= (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~q~0) .cse13) .cse3 .cse4 .cse5 (not (= (mod ULTIMATE.start_main_~y~0 2) 0)) .cse6 .cse7 .cse8) (and (= ULTIMATE.start_main_~q~0 .cse15) .cse14 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~b~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse5 .cse6 (= .cse15 (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))))))) [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L277 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: true [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L9-4(line 9) no Hoare annotation was computed. [2020-11-29 19:51:47,928 INFO L274 CegarLoopResult]: For program point L34-2(lines 34 55) no Hoare annotation was computed. [2020-11-29 19:51:47,929 INFO L277 CegarLoopResult]: At program point L59(lines 19 60) the Hoare annotation is: true [2020-11-29 19:51:47,929 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 19:51:47,929 INFO L274 CegarLoopResult]: For program point L47(lines 47 54) no Hoare annotation was computed. [2020-11-29 19:51:47,929 INFO L270 CegarLoopResult]: At program point L47-2(lines 34 55) the Hoare annotation is: (let ((.cse11 (+ ULTIMATE.start_main_~b~0 1)) (.cse10 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0)) (.cse17 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)) (.cse21 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (let ((.cse5 (div ULTIMATE.start_main_~x~0 2)) (.cse16 (= .cse21 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~q~0))) (.cse19 (<= 0 ULTIMATE.start_main_~a~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse12 (<= ULTIMATE.start_main_~x~0 2)) (.cse1 (mod ULTIMATE.start_main_~x~0 2)) (.cse20 (+ .cse10 .cse17 ULTIMATE.start_main_~p~0 .cse21)) (.cse15 (+ ULTIMATE.start_main_~a~0 1)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (<= 0 ULTIMATE.start_main_~x~0)) (.cse13 (= ULTIMATE.start_main_~p~0 1)) (.cse8 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= (mod ULTIMATE.start_main_~y~0 2) 0)) (.cse14 (= ULTIMATE.start_main_~y~0 .cse11)) (.cse9 (<= ULTIMATE.start_main_~y~0 2))) (or (let ((.cse2 (* 2 ULTIMATE.start_main_~b~0))) (and .cse0 (<= .cse1 0) (not (= (* ULTIMATE.start_main_~b~0 2) 0)) (<= .cse2 2) (= ULTIMATE.start_main_~p~0 4) .cse3 .cse4 (<= 0 .cse2) (= ULTIMATE.start_main_~a~0 .cse5) .cse6 (not (= ULTIMATE.start_main_~a~0 0)) .cse7 .cse8 (< ULTIMATE.start_main_~a~0 2) .cse9)) (and (= .cse10 ULTIMATE.start_main_~q~0) (<= 0 .cse11) .cse12 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse0 .cse6 .cse13 (<= 1 (mod .cse11 2)) .cse8 .cse14 (= (mod ULTIMATE.start_main_~a~0 2) 0) .cse9) (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~b~0) (<= 0 .cse15) .cse3 (<= .cse15 ULTIMATE.start_main_~x~0) .cse12 (<= 1 (mod .cse15 2)) .cse16 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse13 .cse8 .cse9) (let ((.cse18 (div ULTIMATE.start_main_~y~0 2))) (and .cse3 (= ULTIMATE.start_main_~q~0 (+ .cse10 .cse17 ULTIMATE.start_main_~p~0)) (= .cse5 .cse15) .cse12 .cse0 (= .cse18 .cse11) .cse19 .cse8 (= (+ ULTIMATE.start_main_~q~0 (* .cse5 ULTIMATE.start_main_~p~0 .cse18)) .cse20) .cse9)) (and .cse3 (<= ULTIMATE.start_main_~a~0 2) .cse16 .cse13 .cse19 .cse7 .cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse9) (and .cse3 .cse12 (not (= .cse1 0)) (= (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~q~0) .cse20) (= ULTIMATE.start_main_~x~0 .cse15) .cse0 .cse6 .cse13 .cse8 (not .cse4) .cse14 .cse9)))) [2020-11-29 19:51:47,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:51:47 BoogieIcfgContainer [2020-11-29 19:51:47,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:51:47,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:51:47,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:51:47,985 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:51:47,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:49:58" (3/4) ... [2020-11-29 19:51:47,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:51:48,015 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 19:51:48,017 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 19:51:48,017 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:51:48,018 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:51:48,115 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0c0931a2-8da1-43aa-800b-8adf3aaf5f38/bin/uautomizer/witness.graphml [2020-11-29 19:51:48,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:51:48,117 INFO L168 Benchmark]: Toolchain (without parser) took 110378.52 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 56.8 MB in the beginning and 83.2 MB in the end (delta: -26.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:51:48,117 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 45.5 MB in the beginning and 45.4 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:51:48,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.03 ms. Allocated memory is still 86.0 MB. Free memory was 56.6 MB in the beginning and 63.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:51:48,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.34 ms. Allocated memory is still 86.0 MB. Free memory was 63.7 MB in the beginning and 62.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:51:48,119 INFO L168 Benchmark]: Boogie Preprocessor took 26.99 ms. Allocated memory is still 86.0 MB. Free memory was 62.2 MB in the beginning and 60.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:51:48,119 INFO L168 Benchmark]: RCFGBuilder took 406.10 ms. Allocated memory is still 86.0 MB. Free memory was 60.8 MB in the beginning and 46.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:51:48,120 INFO L168 Benchmark]: TraceAbstraction took 109434.80 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 45.4 MB in the beginning and 86.4 MB in the end (delta: -40.9 MB). Peak memory consumption was 58.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:51:48,121 INFO L168 Benchmark]: Witness Printer took 131.34 ms. Allocated memory is still 125.8 MB. Free memory was 86.4 MB in the beginning and 83.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:51:48,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 45.5 MB in the beginning and 45.4 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.03 ms. Allocated memory is still 86.0 MB. Free memory was 56.6 MB in the beginning and 63.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.34 ms. Allocated memory is still 86.0 MB. Free memory was 63.7 MB in the beginning and 62.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.99 ms. Allocated memory is still 86.0 MB. Free memory was 62.2 MB in the beginning and 60.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 406.10 ms. Allocated memory is still 86.0 MB. Free memory was 60.8 MB in the beginning and 46.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 109434.80 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 45.4 MB in the beginning and 86.4 MB in the end (delta: -40.9 MB). Peak memory consumption was 58.3 MB. Max. memory is 16.1 GB. * Witness Printer took 131.34 ms. Allocated memory is still 125.8 MB. Free memory was 86.4 MB in the beginning and 83.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((((0 <= 2 * b && a == x / 2) && x <= 2) && x * y == a * p * b + q) && 1 == cond) && 0 <= x) && !(a == 0)) && b == y / 2) && q == 0) && cond == 1) && !(y == 0)) && y <= 2) || (((((((((1 <= y && a <= 2) && x * y == a * p * b + q) && 1 == cond) && p == 1) && 0 <= a) && q == 0) && cond == 1) && b == y) && y <= 2)) || (((((((((((a * p == q && 0 <= b + 1) && x <= 2) && a == x) && 1 <= cond) && 0 <= x) && p == 1) && 1 <= (b + 1) % 2) && cond == 1) && y == b + 1) && a % 2 == 0) && y <= 2)) || ((((((((((q == a * p + p * b + p && x <= 2) && x / 2 == a + 1) && 0 <= y) && 1 <= cond) && y / 2 == b + 1) && 0 <= a) && cond == 1) && !(y == 0)) && q + x / 2 * p * (y / 2) == a * p + p * b + p + x * y) && y <= 2)) || ((((((((((y <= b && 1 <= y) && 0 <= a + 1) && a + 1 <= x) && x <= 2) && 1 <= (a + 1) % 2) && x * y == a * p * b + q) && 1 == cond) && p == 1) && cond == 1) && y <= 2)) || (((((((((((1 <= y && x <= 2) && !(x % 2 == 0)) && p * x * y + q == a * p + p * b + p + x * y) && x == a + 1) && 1 <= cond) && 0 <= x) && p == 1) && cond == 1) && !(y % 2 == 0)) && y == b + 1) && y <= 2) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((((((((((((1 <= cond && x % 2 <= 0) && !(b * 2 == 0)) && 2 * b <= 2) && p == 4) && 1 <= y) && y % 2 == 0) && 0 <= 2 * b) && a == x / 2) && 0 <= x) && !(a == 0)) && q == 0) && cond == 1) && a < 2) && y <= 2) || (((((((((((a * p == q && 0 <= b + 1) && x <= 2) && a == x) && 1 <= cond) && 0 <= x) && p == 1) && 1 <= (b + 1) % 2) && cond == 1) && y == b + 1) && a % 2 == 0) && y <= 2)) || ((((((((((y <= b && 0 <= a + 1) && 1 <= y) && a + 1 <= x) && x <= 2) && 1 <= (a + 1) % 2) && x * y == a * p * b + q) && 1 == cond) && p == 1) && cond == 1) && y <= 2)) || (((((((((1 <= y && q == a * p + p * b + p) && x / 2 == a + 1) && x <= 2) && 1 <= cond) && y / 2 == b + 1) && 0 <= a) && cond == 1) && q + x / 2 * p * (y / 2) == a * p + p * b + p + x * y) && y <= 2)) || ((((((((1 <= y && a <= 2) && x * y == a * p * b + q) && p == 1) && 0 <= a) && q == 0) && cond == 1) && b == y) && y <= 2)) || (((((((((((1 <= y && x <= 2) && !(x % 2 == 0)) && p * x * y + q == a * p + p * b + p + x * y) && x == a + 1) && 1 <= cond) && 0 <= x) && p == 1) && cond == 1) && !(y % 2 == 0)) && y == b + 1) && y <= 2) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((((((((((a * p == q && 0 <= b + 1) && x <= 2) && a == x) && 1 <= cond) && 0 <= x) && p == 1) && 1 <= (b + 1) % 2) && cond == 1) && y == b + 1) && a % 2 == 0) && y <= 2) || (((((((((q == a * p + p * b + p && x <= 2) && x / 2 == a + 1) && 1 <= cond) && y / 2 == b + 1) && 0 <= b) && 0 <= a) && cond == 1) && q + x / 2 * p * (y / 2) == a * p + p * b + p + x * y) && y <= 2)) || (((((((((((1 <= y && x <= 2) && !(x % 2 == 0)) && x == a + 1) && p * x * y + q == a * p + p * b + p + x * y) && 1 <= cond) && 0 <= x) && p == 1) && !(y % 2 == 0)) && cond == 1) && y == b + 1) && y <= 2)) || ((((((q == x * y && 1 <= y) && y <= b) && 1 == cond) && p == 1) && cond == 1) && x * y == q + a * b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 73.0s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 36.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 189 SDtfs, 417 SDslu, 454 SDs, 0 SdLazy, 871 SolverSat, 137 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 32.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 62 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 23 NumberOfFragments, 850 HoareAnnotationTreeSize, 5 FomulaSimplifications, 2188 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 459 FormulaSimplificationTreeSizeReductionInter, 36.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 53.0s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 168 ConstructedInterpolants, 1 QuantifiedInterpolants, 38185 SizeOfPredicates, 93 NumberOfNonLiveVariables, 885 ConjunctsInSsa, 232 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 20/35 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...