./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX --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 6568b5930df9b96ff5e807ba48758caa6128d98ba24e8c1d6b9a86c6290462f1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:32:50,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:32:50,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:32:50,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:32:50,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:32:50,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:32:50,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:32:50,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:32:50,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:32:50,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:32:50,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:32:50,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:32:50,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:32:50,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:32:50,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:32:50,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:32:50,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:32:50,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:32:50,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:32:50,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:32:50,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:32:50,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:32:50,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:32:50,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:32:50,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:32:50,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:32:50,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:32:50,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:32:50,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:32:50,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:32:50,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:32:50,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:32:50,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:32:50,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:32:50,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:32:50,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:32:50,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:32:50,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:32:50,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:32:50,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:32:50,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:32:50,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:32:50,811 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:32:50,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:32:50,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:32:50,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:32:50,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:32:50,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:32:50,813 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:32:50,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:32:50,818 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:32:50,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:32:50,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:32:50,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:32:50,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:32:50,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:32:50,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:32:50,819 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:32:50,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:32:50,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:32:50,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:32:50,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:32:50,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:32:50,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:32:50,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:32:50,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:32:50,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:32:50,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:32:50,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:32:50,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:32:50,822 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:32:50,822 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:32:50,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:32:50,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:32:50,823 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_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6568b5930df9b96ff5e807ba48758caa6128d98ba24e8c1d6b9a86c6290462f1 [2021-11-09 09:32:51,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:32:51,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:32:51,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:32:51,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:32:51,156 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:32:51,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c [2021-11-09 09:32:51,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/data/2e4c33ba8/cd8edca53df8496b9b350d1c2bd3604c/FLAG69cc8d1c9 [2021-11-09 09:32:51,777 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:32:51,777 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c [2021-11-09 09:32:51,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/data/2e4c33ba8/cd8edca53df8496b9b350d1c2bd3604c/FLAG69cc8d1c9 [2021-11-09 09:32:52,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/data/2e4c33ba8/cd8edca53df8496b9b350d1c2bd3604c [2021-11-09 09:32:52,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:32:52,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:32:52,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:32:52,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:32:52,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:32:52,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc66f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52, skipping insertion in model container [2021-11-09 09:32:52,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:32:52,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:32:52,340 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c[524,537] [2021-11-09 09:32:52,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:32:52,370 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:32:52,382 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound1.c[524,537] [2021-11-09 09:32:52,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:32:52,421 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:32:52,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52 WrapperNode [2021-11-09 09:32:52,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:32:52,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:32:52,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:32:52,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:32:52,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:32:52,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:32:52,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:32:52,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:32:52,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:32:52,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:32:52,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:32:52,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:32:52,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (1/1) ... [2021-11-09 09:32:52,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:32:52,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:32:52,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:32:52,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:32:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:32:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:32:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:32:52,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:32:52,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:32:52,854 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-09 09:32:52,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:32:52 BoogieIcfgContainer [2021-11-09 09:32:52,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:32:52,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:32:52,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:32:52,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:32:52,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:32:52" (1/3) ... [2021-11-09 09:32:52,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f39141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:32:52, skipping insertion in model container [2021-11-09 09:32:52,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:32:52" (2/3) ... [2021-11-09 09:32:52,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f39141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:32:52, skipping insertion in model container [2021-11-09 09:32:52,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:32:52" (3/3) ... [2021-11-09 09:32:52,880 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound1.c [2021-11-09 09:32:52,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:32:52,886 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-09 09:32:52,986 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:32:52,996 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:32:52,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-09 09:32:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:53,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:32:53,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:32:53,036 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:53,037 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:32:53,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1235340721, now seen corresponding path program 1 times [2021-11-09 09:32:53,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:53,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572383486] [2021-11-09 09:32:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:53,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:53,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:32:53,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851298815] [2021-11-09 09:32:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:53,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:32:53,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:32:53,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:32:53,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:32:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:53,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 09:32:53,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:32:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:53,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:53,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572383486] [2021-11-09 09:32:53,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:32:53,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851298815] [2021-11-09 09:32:53,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851298815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:53,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:53,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:32:53,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712306425] [2021-11-09 09:32:53,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:32:53,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:53,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:32:53,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:32:53,296 INFO L87 Difference]: Start difference. First operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:53,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:32:53,310 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-11-09 09:32:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:32:53,312 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 09:32:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:32:53,319 INFO L225 Difference]: With dead ends: 39 [2021-11-09 09:32:53,320 INFO L226 Difference]: Without dead ends: 17 [2021-11-09 09:32:53,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:32:53,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-09 09:32:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-09 09:32:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-09 09:32:53,353 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2021-11-09 09:32:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:32:53,353 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-09 09:32:53,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:32:53,354 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-09 09:32:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:32:53,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:32:53,355 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:32:53,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:32:53,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-09 09:32:53,582 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:32:53,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:32:53,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-11-09 09:32:53,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:32:53,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982646674] [2021-11-09 09:32:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:53,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:32:53,605 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:32:53,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232885223] [2021-11-09 09:32:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:32:53,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:32:53,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:32:53,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:32:53,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:32:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:32:53,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:32:53,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:32:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:32:53,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:32:53,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982646674] [2021-11-09 09:32:53,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:32:53,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232885223] [2021-11-09 09:32:53,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232885223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:32:53,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:32:53,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:32:53,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585604003] [2021-11-09 09:32:53,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:32:53,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:32:53,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:32:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:32:53,952 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:01,557 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-11-09 09:33:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:33:01,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 09:33:01,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:01,559 INFO L225 Difference]: With dead ends: 32 [2021-11-09 09:33:01,559 INFO L226 Difference]: Without dead ends: 30 [2021-11-09 09:33:01,560 INFO L786 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 [2021-11-09 09:33:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-09 09:33:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2021-11-09 09:33:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:01,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-09 09:33:01,565 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2021-11-09 09:33:01,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:01,565 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-09 09:33:01,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:01,566 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-09 09:33:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 09:33:01,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:01,566 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:01,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:01,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:01,767 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:33:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:01,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1507424085, now seen corresponding path program 1 times [2021-11-09 09:33:01,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:01,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240637759] [2021-11-09 09:33:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:01,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:01,778 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:33:01,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751611001] [2021-11-09 09:33:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:01,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:01,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:01,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:01,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:33:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:01,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:33:01,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:01,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:01,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240637759] [2021-11-09 09:33:01,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:33:01,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751611001] [2021-11-09 09:33:01,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751611001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:01,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:01,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:33:01,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091916864] [2021-11-09 09:33:01,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:33:01,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:01,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:33:01,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:33:01,921 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:01,934 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-11-09 09:33:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:33:01,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-09 09:33:01,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:01,935 INFO L225 Difference]: With dead ends: 24 [2021-11-09 09:33:01,935 INFO L226 Difference]: Without dead ends: 20 [2021-11-09 09:33:01,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:33:01,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-09 09:33:01,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-09 09:33:01,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:01,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-09 09:33:01,940 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2021-11-09 09:33:01,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:01,941 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-09 09:33:01,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:01,941 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-09 09:33:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 09:33:01,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:01,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:01,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:02,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:02,162 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:33:02,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1189458428, now seen corresponding path program 1 times [2021-11-09 09:33:02,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:02,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567447103] [2021-11-09 09:33:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:02,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:02,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:33:02,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025802742] [2021-11-09 09:33:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:02,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:02,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:02,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:02,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:33:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:02,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:33:02,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:02,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:33:02,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567447103] [2021-11-09 09:33:02,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:33:02,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025802742] [2021-11-09 09:33:02,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025802742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:02,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:02,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:33:02,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334942721] [2021-11-09 09:33:02,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:33:02,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:33:02,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:33:02,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:33:02,447 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:02,608 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-11-09 09:33:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:33:02,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-09 09:33:02,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:02,609 INFO L225 Difference]: With dead ends: 24 [2021-11-09 09:33:02,610 INFO L226 Difference]: Without dead ends: 18 [2021-11-09 09:33:02,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:33:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-09 09:33:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-11-09 09:33:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:02,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-09 09:33:02,614 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-11-09 09:33:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:02,614 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-09 09:33:02,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-09 09:33:02,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 09:33:02,615 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:02,615 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:02,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:02,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:02,816 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:33:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:02,816 INFO L85 PathProgramCache]: Analyzing trace with hash -132612007, now seen corresponding path program 1 times [2021-11-09 09:33:02,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:02,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967982046] [2021-11-09 09:33:02,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:02,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:02,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:33:02,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083583957] [2021-11-09 09:33:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:02,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:02,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:02,841 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:33:02,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:33:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:33:02,922 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:33:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:33:02,959 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:33:02,960 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 09:33:02,961 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:33:02,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:33:03,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:03,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:33:03,177 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-09 09:33:03,180 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:33:03,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:33:03 BoogieIcfgContainer [2021-11-09 09:33:03,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:33:03,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:33:03,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:33:03,209 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:33:03,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:32:52" (3/4) ... [2021-11-09 09:33:03,211 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-09 09:33:03,260 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:33:03,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:33:03,262 INFO L168 Benchmark]: Toolchain (without parser) took 11124.00 ms. Allocated memory is still 109.1 MB. Free memory was 74.6 MB in the beginning and 40.5 MB in the end (delta: 34.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:03,262 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 83.5 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:33:03,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.77 ms. Allocated memory is still 109.1 MB. Free memory was 74.3 MB in the beginning and 84.8 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:03,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.90 ms. Allocated memory is still 109.1 MB. Free memory was 84.8 MB in the beginning and 83.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:03,265 INFO L168 Benchmark]: Boogie Preprocessor took 48.96 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 81.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:03,265 INFO L168 Benchmark]: RCFGBuilder took 334.16 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 71.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:03,266 INFO L168 Benchmark]: TraceAbstraction took 10349.30 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 42.6 MB in the end (delta: 28.6 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:03,267 INFO L168 Benchmark]: Witness Printer took 51.63 ms. Allocated memory is still 109.1 MB. Free memory was 42.6 MB in the beginning and 40.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:03,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 83.5 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.77 ms. Allocated memory is still 109.1 MB. Free memory was 74.3 MB in the beginning and 84.8 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.90 ms. Allocated memory is still 109.1 MB. Free memory was 84.8 MB in the beginning and 83.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.96 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 81.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 334.16 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 71.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10349.30 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 42.6 MB in the end (delta: 28.6 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Witness Printer took 51.63 ms. Allocated memory is still 109.1 MB. Free memory was 42.6 MB in the beginning and 40.5 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) VAL [counter=0] [L9] COND FALSE !(!cond) VAL [counter=0] [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<1 [L12] COND FALSE !(!(cond)) VAL [counter=1] [L36] COND FALSE !(!(r != 0)) VAL [counter=1] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND FALSE !(counter++<1) [L12] COND TRUE !(cond) VAL [counter=2] [L14] reach_error() VAL [counter=2] - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 30 SDslu, 74 SDs, 0 SdLazy, 56 SolverSat, 15 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 13 NumberOfNonLiveVariables, 279 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 incorrect! [2021-11-09 09:33:03,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20372cc7-515c-4a0c-afea-ac49060a8029/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE