./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound20.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_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/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 2b2975590751165abbc1c989a092253167effc31 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:17:25,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:17:25,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:17:25,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:17:25,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:17:25,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:17:25,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:17:25,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:17:25,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:17:25,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:17:25,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:17:25,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:17:25,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:17:25,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:17:25,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:17:25,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:17:25,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:17:25,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:17:25,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:17:25,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:17:25,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:17:25,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:17:25,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:17:25,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:17:25,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:17:25,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:17:25,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:17:25,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:17:25,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:17:25,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:17:25,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:17:25,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:17:25,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:17:25,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:17:25,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:17:25,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:17:25,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:17:25,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:17:25,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:17:25,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:17:25,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:17:25,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:17:25,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:17:25,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:17:25,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:17:25,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:17:25,709 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:17:25,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:17:25,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:17:25,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:17:25,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:17:25,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:17:25,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:17:25,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:17:25,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:17:25,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:17:25,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:17:25,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:17:25,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:17:25,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:17:25,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:17:25,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:17:25,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:17:25,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:17:25,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:17:25,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:17:25,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:17:25,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:17:25,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:17:25,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:17:25,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:17:25,715 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_e9cc409e-0f3c-4435-818d-4d4d336f2897/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b2975590751165abbc1c989a092253167effc31 [2020-11-29 21:17:25,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:17:25,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:17:25,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:17:25,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:17:25,985 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:17:25,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound20.c [2020-11-29 21:17:26,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/data/096269aad/ecb3ade2cb014621ab590e059bdbf561/FLAG2086c6cb9 [2020-11-29 21:17:26,605 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:17:26,605 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound20.c [2020-11-29 21:17:26,618 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/data/096269aad/ecb3ade2cb014621ab590e059bdbf561/FLAG2086c6cb9 [2020-11-29 21:17:27,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/data/096269aad/ecb3ade2cb014621ab590e059bdbf561 [2020-11-29 21:17:27,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:17:27,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:17:27,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:17:27,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:17:27,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:17:27,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329c3431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27, skipping insertion in model container [2020-11-29 21:17:27,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:17:27,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:17:27,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:17:27,295 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:17:27,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:17:27,330 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:17:27,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27 WrapperNode [2020-11-29 21:17:27,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:17:27,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:17:27,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:17:27,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:17:27,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:17:27,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:17:27,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:17:27,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:17:27,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (1/1) ... [2020-11-29 21:17:27,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:17:27,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:17:27,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:17:27,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:17:27,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:17:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:17:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:17:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:17:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:17:27,814 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:17:27,825 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-29 21:17:27,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:17:27 BoogieIcfgContainer [2020-11-29 21:17:27,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:17:27,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:17:27,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:17:27,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:17:27,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:17:27" (1/3) ... [2020-11-29 21:17:27,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac7a7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:17:27, skipping insertion in model container [2020-11-29 21:17:27,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:17:27" (2/3) ... [2020-11-29 21:17:27,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac7a7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:17:27, skipping insertion in model container [2020-11-29 21:17:27,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:17:27" (3/3) ... [2020-11-29 21:17:27,843 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound20.c [2020-11-29 21:17:27,855 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:17:27,859 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 21:17:27,879 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 21:17:27,920 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:17:27,920 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:17:27,920 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:17:27,921 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:17:27,921 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:17:27,921 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:17:27,921 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:17:27,921 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:17:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-29 21:17:27,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:17:27,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:17:27,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:27,955 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:17:27,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:27,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2020-11-29 21:17:27,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:27,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682335097] [2020-11-29 21:17:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:28,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682335097] [2020-11-29 21:17:28,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:17:28,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:17:28,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852656122] [2020-11-29 21:17:28,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:17:28,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:17:28,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:17:28,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:17:28,198 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-11-29 21:17:28,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:17:28,220 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2020-11-29 21:17:28,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:17:28,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 21:17:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:17:28,233 INFO L225 Difference]: With dead ends: 37 [2020-11-29 21:17:28,234 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 21:17:28,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:17:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 21:17:28,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 21:17:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 21:17:28,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-29 21:17:28,283 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2020-11-29 21:17:28,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:17:28,284 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-29 21:17:28,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:17:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-29 21:17:28,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:17:28,286 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:17:28,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:28,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:17:28,287 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:17:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:28,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-11-29 21:17:28,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:28,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905640144] [2020-11-29 21:17:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:28,341 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:17:28,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214552264] [2020-11-29 21:17:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:17:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:28,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:17:28,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:28,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905640144] [2020-11-29 21:17:28,532 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:17:28,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214552264] [2020-11-29 21:17:28,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:17:28,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:17:28,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467107551] [2020-11-29 21:17:28,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:17:28,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:17:28,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:17:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:17:28,536 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2020-11-29 21:17:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:17:28,609 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-29 21:17:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:17:28,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 21:17:28,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:17:28,612 INFO L225 Difference]: With dead ends: 30 [2020-11-29 21:17:28,612 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 21:17:28,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:17:28,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 21:17:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-29 21:17:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 21:17:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-29 21:17:28,624 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-11-29 21:17:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:17:28,625 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-29 21:17:28,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:17:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-29 21:17:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:17:28,626 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:17:28,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:28,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 21:17:28,827 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:17:28,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:28,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1811972666, now seen corresponding path program 1 times [2020-11-29 21:17:28,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:28,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449642803] [2020-11-29 21:17:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:28,866 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:17:28,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291898397] [2020-11-29 21:17:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:17:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:28,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 21:17:28,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:29,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449642803] [2020-11-29 21:17:29,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:17:29,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291898397] [2020-11-29 21:17:29,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:17:29,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:17:29,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135676314] [2020-11-29 21:17:29,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:17:29,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:17:29,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:17:29,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:17:29,084 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-11-29 21:17:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:17:31,251 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-11-29 21:17:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:17:31,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 21:17:31,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:17:31,255 INFO L225 Difference]: With dead ends: 30 [2020-11-29 21:17:31,255 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 21:17:31,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:17:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 21:17:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-11-29 21:17:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 21:17:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-29 21:17:31,263 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-11-29 21:17:31,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:17:31,264 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-29 21:17:31,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:17:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-29 21:17:31,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 21:17:31,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:17:31,267 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:31,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:17:31,489 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:17:31,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:31,490 INFO L82 PathProgramCache]: Analyzing trace with hash 336535162, now seen corresponding path program 1 times [2020-11-29 21:17:31,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:31,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429043049] [2020-11-29 21:17:31,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:31,507 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:17:31,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723432668] [2020-11-29 21:17:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:17:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:31,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:17:31,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:31,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429043049] [2020-11-29 21:17:31,595 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:17:31,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723432668] [2020-11-29 21:17:31,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:17:31,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 21:17:31,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127385714] [2020-11-29 21:17:31,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:17:31,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:17:31,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:17:31,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:17:31,597 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-11-29 21:17:31,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:17:31,640 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-29 21:17:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:17:31,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 21:17:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:17:31,642 INFO L225 Difference]: With dead ends: 27 [2020-11-29 21:17:31,642 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 21:17:31,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:17:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 21:17:31,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 21:17:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 21:17:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-29 21:17:31,650 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2020-11-29 21:17:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:17:31,651 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-29 21:17:31,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:17:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-29 21:17:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 21:17:31,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:17:31,654 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:31,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:17:31,869 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:17:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:31,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1334571699, now seen corresponding path program 1 times [2020-11-29 21:17:31,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:31,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168005234] [2020-11-29 21:17:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:31,885 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:17:31,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806032625] [2020-11-29 21:17:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:17:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:31,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 21:17:31,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:31,963 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:17:31,964 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:17:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:17:32,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168005234] [2020-11-29 21:17:32,025 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:17:32,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806032625] [2020-11-29 21:17:32,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:17:32,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:17:32,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879519185] [2020-11-29 21:17:32,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:17:32,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:17:32,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:17:32,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:17:32,027 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-11-29 21:17:36,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:17:36,203 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-29 21:17:36,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:17:36,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-29 21:17:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:17:36,207 INFO L225 Difference]: With dead ends: 27 [2020-11-29 21:17:36,207 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 21:17:36,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:17:36,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 21:17:36,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 21:17:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 21:17:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-29 21:17:36,213 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-11-29 21:17:36,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:17:36,213 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-29 21:17:36,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:17:36,213 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-29 21:17:36,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:17:36,214 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:17:36,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:36,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:17:36,415 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:17:36,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:36,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1576870778, now seen corresponding path program 2 times [2020-11-29 21:17:36,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:36,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809964836] [2020-11-29 21:17:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:36,429 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:17:36,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85473270] [2020-11-29 21:17:36,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:17:36,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:17:36,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:17:36,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 21:17:36,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:36,525 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:17:36,525 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:17:38,617 WARN L838 $PredicateComparison]: unable to prove that (and (<= 2 c_ULTIMATE.start_main_~c~0) (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1)) (<= 1 c_ULTIMATE.start_main_~z~0)) is different from false [2020-11-29 21:17:38,621 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:17:38,621 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:17:44,816 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 21:17:45,051 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:17:45,065 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:17:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-11-29 21:17:45,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809964836] [2020-11-29 21:17:45,101 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:17:45,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85473270] [2020-11-29 21:17:45,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:17:45,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 21:17:45,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079132996] [2020-11-29 21:17:45,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 21:17:45,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:17:45,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 21:17:45,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=52, Unknown=2, NotChecked=14, Total=90 [2020-11-29 21:17:45,104 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 10 states. [2020-11-29 21:18:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:18:06,795 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-29 21:18:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 21:18:06,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-29 21:18:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:18:06,800 INFO L225 Difference]: With dead ends: 34 [2020-11-29 21:18:06,800 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 21:18:06,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=48, Invalid=135, Unknown=3, NotChecked=24, Total=210 [2020-11-29 21:18:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 21:18:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-11-29 21:18:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 21:18:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-29 21:18:06,816 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2020-11-29 21:18:06,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:18:06,817 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-29 21:18:06,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 21:18:06,817 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-29 21:18:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:18:06,823 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:18:06,823 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:07,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 21:18:07,045 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:18:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:07,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1638396498, now seen corresponding path program 2 times [2020-11-29 21:18:07,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:07,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328258834] [2020-11-29 21:18:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:07,057 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:18:07,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797056362] [2020-11-29 21:18:07,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:18:07,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:18:07,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:18:07,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:18:07,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:18:07,175 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 21:18:07,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328258834] [2020-11-29 21:18:07,176 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:18:07,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797056362] [2020-11-29 21:18:07,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:18:07,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:18:07,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622739110] [2020-11-29 21:18:07,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:18:07,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:18:07,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:18:07,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:18:07,178 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2020-11-29 21:18:07,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:18:07,261 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-11-29 21:18:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:18:07,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 21:18:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:18:07,263 INFO L225 Difference]: With dead ends: 31 [2020-11-29 21:18:07,263 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 21:18:07,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:18:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 21:18:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-29 21:18:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 21:18:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-11-29 21:18:07,268 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2020-11-29 21:18:07,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:18:07,268 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-11-29 21:18:07,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:18:07,268 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-11-29 21:18:07,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 21:18:07,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:18:07,269 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:07,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:18:07,470 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:18:07,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:07,477 INFO L82 PathProgramCache]: Analyzing trace with hash -8965934, now seen corresponding path program 3 times [2020-11-29 21:18:07,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:07,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171847284] [2020-11-29 21:18:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:07,492 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:18:07,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887461070] [2020-11-29 21:18:07,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:18:07,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:18:07,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:18:07,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 21:18:07,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:18:07,604 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:18:07,604 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:07,937 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 21:18:07,944 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:07,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 21:18:08,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171847284] [2020-11-29 21:18:08,077 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:18:08,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887461070] [2020-11-29 21:18:08,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:18:08,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:18:08,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798552037] [2020-11-29 21:18:08,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:18:08,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:18:08,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:18:08,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:18:08,079 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 6 states. [2020-11-29 21:18:19,302 WARN L193 SmtUtils]: Spent 11.14 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-29 21:18:31,242 WARN L193 SmtUtils]: Spent 11.90 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-29 21:18:36,183 WARN L193 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 21:18:49,325 WARN L193 SmtUtils]: Spent 13.04 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 21:18:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:18:49,580 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-29 21:18:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:18:49,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 21:18:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:18:49,583 INFO L225 Difference]: With dead ends: 27 [2020-11-29 21:18:49,583 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 21:18:49,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:18:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 21:18:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-11-29 21:18:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 21:18:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-29 21:18:49,590 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2020-11-29 21:18:49,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:18:49,590 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-29 21:18:49,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:18:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-29 21:18:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 21:18:49,590 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:18:49,590 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:49,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:18:49,791 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:18:49,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:49,792 INFO L82 PathProgramCache]: Analyzing trace with hash -277986590, now seen corresponding path program 3 times [2020-11-29 21:18:49,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:49,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208475276] [2020-11-29 21:18:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:49,811 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:18:49,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738714106] [2020-11-29 21:18:49,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:18:49,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:18:49,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:18:49,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 21:18:49,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:18:50,212 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 21:18:50,215 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:18:50,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:53,353 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 21:18:53,359 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:53,376 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:53,382 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:53,385 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 21:18:53,389 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:53,395 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:53,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:53,425 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:18:58,040 WARN L193 SmtUtils]: Spent 4.60 s on a formula simplification that was a NOOP. DAG size: 20 [2020-11-29 21:19:13,254 WARN L193 SmtUtils]: Spent 15.20 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 21:19:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 21:19:18,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208475276] [2020-11-29 21:19:18,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:19:18,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738714106] [2020-11-29 21:19:18,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:19:18,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:19:18,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758186115] [2020-11-29 21:19:18,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:19:18,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:19:18,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:19:18,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2020-11-29 21:19:18,240 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2020-11-29 21:19:35,376 WARN L193 SmtUtils]: Spent 14.43 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-29 21:19:49,141 WARN L193 SmtUtils]: Spent 13.60 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-29 21:20:14,293 WARN L193 SmtUtils]: Spent 20.93 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 21:20:20,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:20:20,435 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-29 21:20:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:20:20,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-29 21:20:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:20:20,460 INFO L225 Difference]: With dead ends: 24 [2020-11-29 21:20:20,460 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:20:20,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 57.9s TimeCoverageRelationStatistics Valid=27, Invalid=43, Unknown=2, NotChecked=0, Total=72 [2020-11-29 21:20:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:20:20,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:20:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:20:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:20:20,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-29 21:20:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:20:20,462 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:20:20,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:20:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:20:20,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:20:20,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 21:20:20,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 21:20:34,640 WARN L193 SmtUtils]: Spent 13.91 s on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-11-29 21:20:40,862 WARN L193 SmtUtils]: Spent 6.22 s on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2020-11-29 21:20:40,868 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 45) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (= ULTIMATE.start_main_~x~0 1) (<= ~counter~0 0) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse0) (let ((.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (let ((.cse1 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse1 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)))) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0)))) [2020-11-29 21:20:40,868 INFO L274 CegarLoopResult]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2020-11-29 21:20:40,868 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 21:20:40,868 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 21:20:40,868 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 21:20:40,868 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 21:20:40,868 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 21:20:40,868 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-29 21:20:40,868 INFO L270 CegarLoopResult]: At program point L16-1(lines 38 39) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (= (+ (* .cse0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)))) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~z~0))) [2020-11-29 21:20:40,868 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-11-29 21:20:40,869 INFO L277 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-11-29 21:20:40,869 INFO L274 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-11-29 21:20:40,869 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-11-29 21:20:40,869 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 21:20:40,869 INFO L277 CegarLoopResult]: At program point L50(lines 23 51) the Hoare annotation is: true [2020-11-29 21:20:40,869 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-29 21:20:40,869 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-11-29 21:20:40,869 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-29 21:20:40,869 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-29 21:20:40,869 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2020-11-29 21:20:40,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:20:40 BoogieIcfgContainer [2020-11-29 21:20:40,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:20:40,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:20:40,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:20:40,891 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:20:40,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:17:27" (3/4) ... [2020-11-29 21:20:40,894 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:20:40,901 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 21:20:40,902 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:20:40,902 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:20:40,902 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:20:40,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e9cc409e-0f3c-4435-818d-4d4d336f2897/bin/uautomizer/witness.graphml [2020-11-29 21:20:40,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:20:40,951 INFO L168 Benchmark]: Toolchain (without parser) took 193927.57 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 72.0 MB in the beginning and 46.5 MB in the end (delta: 25.5 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:40,952 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 100.7 MB. Free memory was 58.1 MB in the beginning and 58.1 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:20:40,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.41 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 71.6 MB in the beginning and 98.3 MB in the end (delta: -26.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:40,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.51 ms. Allocated memory is still 121.6 MB. Free memory was 98.3 MB in the beginning and 96.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:40,953 INFO L168 Benchmark]: Boogie Preprocessor took 34.70 ms. Allocated memory is still 121.6 MB. Free memory was 96.7 MB in the beginning and 95.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:20:40,954 INFO L168 Benchmark]: RCFGBuilder took 423.07 ms. Allocated memory is still 121.6 MB. Free memory was 95.5 MB in the beginning and 82.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:40,955 INFO L168 Benchmark]: TraceAbstraction took 193060.86 ms. Allocated memory is still 121.6 MB. Free memory was 82.0 MB in the beginning and 48.6 MB in the end (delta: 33.5 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:40,955 INFO L168 Benchmark]: Witness Printer took 59.75 ms. Allocated memory is still 121.6 MB. Free memory was 48.6 MB in the beginning and 46.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:40,958 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 100.7 MB. Free memory was 58.1 MB in the beginning and 58.1 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.41 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 71.6 MB in the beginning and 98.3 MB in the end (delta: -26.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.51 ms. Allocated memory is still 121.6 MB. Free memory was 98.3 MB in the beginning and 96.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.70 ms. Allocated memory is still 121.6 MB. Free memory was 96.7 MB in the beginning and 95.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 423.07 ms. Allocated memory is still 121.6 MB. Free memory was 95.5 MB in the beginning and 82.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 193060.86 ms. Allocated memory is still 121.6 MB. Free memory was 82.0 MB in the beginning and 48.6 MB in the end (delta: 33.5 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. * Witness Printer took 59.75 ms. Allocated memory is still 121.6 MB. Free memory was 48.6 MB in the beginning and 46.5 MB in the end (delta: 2.1 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: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((x + -1) / z * z + y == z + (x + -1) / z * z * z && z * x + 1 == x + y) && (x + -1) % z == 0) && 1 == cond) && 1 <= z - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((x == 1 && counter <= 0) && z == y) && 1 <= c) && 1 <= z) || ((((x + -1) / z * z + y == z + (x + -1) / z * z * z && (x + -1) % z == 0) && 1 <= cond) && 1 <= z) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 172.7s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 132.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 20.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 100 SDslu, 252 SDs, 0 SdLazy, 180 SolverSat, 34 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 40.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 106.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=6, 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, 9 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 96 HoareAnnotationTreeSize, 4 FomulaSimplifications, 207 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 163 FormulaSimplificationTreeSizeReductionInter, 20.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 37.9s InterpolantComputationTime, 148 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 13901 SizeOfPredicates, 46 NumberOfNonLiveVariables, 719 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 42/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...