./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg --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 c7f1683dc0c60d20b83300f79a9b15e37cd1fd05703e492aec10298f1b5a1afa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:31:51,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:31:51,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:31:51,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:31:51,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:31:51,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:31:51,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:31:51,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:31:51,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:31:51,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:31:51,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:31:51,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:31:51,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:31:51,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:31:51,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:31:51,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:31:51,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:31:51,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:31:51,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:31:51,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:31:51,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:31:51,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:31:51,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:31:51,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:31:51,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:31:51,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:31:51,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:31:51,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:31:51,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:31:51,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:31:51,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:31:51,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:31:51,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:31:51,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:31:51,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:31:51,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:31:51,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:31:51,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:31:51,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:31:51,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:31:51,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:31:51,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:31:51,874 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:31:51,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:31:51,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:31:51,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:31:51,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:31:51,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:31:51,877 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:31:51,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:31:51,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:31:51,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:31:51,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:31:51,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:31:51,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:31:51,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:31:51,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:31:51,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:31:51,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:31:51,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:31:51,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:31:51,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:31:51,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:31:51,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:31:51,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:31:51,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:31:51,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:31:51,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:31:51,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:31:51,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:31:51,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:31:51,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:31:51,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:31:51,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:31:51,882 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_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7f1683dc0c60d20b83300f79a9b15e37cd1fd05703e492aec10298f1b5a1afa [2021-10-28 09:31:52,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:31:52,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:31:52,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:31:52,161 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:31:52,162 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:31:52,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c [2021-10-28 09:31:52,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/data/799d6c3a6/226f2cd38d984b9ca84301e8f124d24a/FLAG682ae2d0b [2021-10-28 09:31:52,789 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:31:52,789 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c [2021-10-28 09:31:52,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/data/799d6c3a6/226f2cd38d984b9ca84301e8f124d24a/FLAG682ae2d0b [2021-10-28 09:31:53,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/data/799d6c3a6/226f2cd38d984b9ca84301e8f124d24a [2021-10-28 09:31:53,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:31:53,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:31:53,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:31:53,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:31:53,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:31:53,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a0db1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53, skipping insertion in model container [2021-10-28 09:31:53,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:31:53,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:31:53,386 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_33bbc93e-eb19-482c-8be8-76575ffcface/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c[524,537] [2021-10-28 09:31:53,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:31:53,434 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:31:53,449 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_33bbc93e-eb19-482c-8be8-76575ffcface/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c[524,537] [2021-10-28 09:31:53,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:31:53,498 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:31:53,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53 WrapperNode [2021-10-28 09:31:53,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:31:53,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:31:53,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:31:53,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:31:53,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:31:53,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:31:53,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:31:53,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:31:53,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:31:53,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:31:53,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:31:53,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:31:53,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (1/1) ... [2021-10-28 09:31:53,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:31:53,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:53,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:31:53,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:31:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:31:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:31:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:31:53,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:31:54,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:31:54,022 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 09:31:54,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:31:54 BoogieIcfgContainer [2021-10-28 09:31:54,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:31:54,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:31:54,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:31:54,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:31:54,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:31:53" (1/3) ... [2021-10-28 09:31:54,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c77cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:31:54, skipping insertion in model container [2021-10-28 09:31:54,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:31:53" (2/3) ... [2021-10-28 09:31:54,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c77cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:31:54, skipping insertion in model container [2021-10-28 09:31:54,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:31:54" (3/3) ... [2021-10-28 09:31:54,049 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound1.c [2021-10-28 09:31:54,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:31:54,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 09:31:54,132 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:31:54,139 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 [2021-10-28 09:31:54,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:31:54,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 24 states have (on average 1.625) internal successors, (39), 27 states have internal predecessors, (39), 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) [2021-10-28 09:31:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:31:54,161 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:31:54,161 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:54,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:31:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-28 09:31:54,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:54,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745462171] [2021-10-28 09:31:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:54,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:54,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:31:54,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745462171] [2021-10-28 09:31:54,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745462171] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:31:54,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:31:54,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:31:54,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204478415] [2021-10-28 09:31:54,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:31:54,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:31:54,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:31:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:31:54,422 INFO L87 Difference]: Start difference. First operand has 28 states, 24 states have (on average 1.625) internal successors, (39), 27 states have internal predecessors, (39), 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 5.5) internal successors, (11), 2 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) [2021-10-28 09:31:54,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:31:54,441 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2021-10-28 09:31:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:31:54,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2021-10-28 09:31:54,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:31:54,451 INFO L225 Difference]: With dead ends: 53 [2021-10-28 09:31:54,451 INFO L226 Difference]: Without dead ends: 24 [2021-10-28 09:31:54,455 INFO L786 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 [2021-10-28 09:31:54,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-28 09:31:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-28 09:31:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 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) [2021-10-28 09:31:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-28 09:31:54,491 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2021-10-28 09:31:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:31:54,492 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-28 09:31:54,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-10-28 09:31:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-28 09:31:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:31:54,504 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:31:54,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:54,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:31:54,505 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:31:54,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:54,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-28 09:31:54,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:54,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860039317] [2021-10-28 09:31:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:54,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:54,570 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:31:54,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723761148] [2021-10-28 09:31:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:54,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:31:54,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:54,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:31:54,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:31:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:54,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 09:31:54,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:55,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:31:55,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860039317] [2021-10-28 09:31:55,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:31:55,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723761148] [2021-10-28 09:31:55,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723761148] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:31:55,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:31:55,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:31:55,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119472452] [2021-10-28 09:31:55,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:31:55,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:31:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:31:55,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:31:55,379 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2021-10-28 09:31:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:31:55,836 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-10-28 09:31:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:31:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 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 [2021-10-28 09:31:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:31:55,838 INFO L225 Difference]: With dead ends: 55 [2021-10-28 09:31:55,839 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 09:31:55,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:31:55,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 09:31:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2021-10-28 09:31:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-10-28 09:31:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-28 09:31:55,856 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 11 [2021-10-28 09:31:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:31:55,857 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-28 09:31:55,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2021-10-28 09:31:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-10-28 09:31:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:31:55,858 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:31:55,858 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:55,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 09:31:56,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-28 09:31:56,084 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:31:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash -937517175, now seen corresponding path program 1 times [2021-10-28 09:31:56,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:56,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933641742] [2021-10-28 09:31:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:56,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:56,104 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:31:56,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716216189] [2021-10-28 09:31:56,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:56,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:31:56,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:56,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:31:56,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:31:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:56,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:31:56,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:57,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:31:57,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933641742] [2021-10-28 09:31:57,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:31:57,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716216189] [2021-10-28 09:31:57,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716216189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:31:57,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:31:57,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:31:57,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198542646] [2021-10-28 09:31:57,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:31:57,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:31:57,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:31:57,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:31:57,074 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-10-28 09:31:58,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:31:58,486 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-10-28 09:31:58,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:31:58,487 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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 14 [2021-10-28 09:31:58,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:31:58,488 INFO L225 Difference]: With dead ends: 39 [2021-10-28 09:31:58,488 INFO L226 Difference]: Without dead ends: 37 [2021-10-28 09:31:58,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:31:58,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-28 09:31:58,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2021-10-28 09:31:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.25) internal successors, (35), 30 states have internal predecessors, (35), 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) [2021-10-28 09:31:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-10-28 09:31:58,494 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 14 [2021-10-28 09:31:58,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:31:58,495 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-28 09:31:58,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-10-28 09:31:58,495 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-10-28 09:31:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:31:58,496 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:31:58,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:58,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:58,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:31:58,708 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:31:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash 989284300, now seen corresponding path program 1 times [2021-10-28 09:31:58,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:58,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622696782] [2021-10-28 09:31:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:58,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:58,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:31:58,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914067906] [2021-10-28 09:31:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:58,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:31:58,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:58,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:31:58,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:31:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:58,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:31:58,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:58,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:31:58,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622696782] [2021-10-28 09:31:58,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:31:58,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914067906] [2021-10-28 09:31:58,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914067906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:31:58,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:31:58,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:31:58,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180600845] [2021-10-28 09:31:58,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:31:58,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:31:58,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:31:58,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:31:58,963 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2021-10-28 09:31:59,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:31:59,103 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-10-28 09:31:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:31:59,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 16 [2021-10-28 09:31:59,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:31:59,105 INFO L225 Difference]: With dead ends: 36 [2021-10-28 09:31:59,105 INFO L226 Difference]: Without dead ends: 30 [2021-10-28 09:31:59,105 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:31:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-28 09:31:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-10-28 09:31:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 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) [2021-10-28 09:31:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-10-28 09:31:59,110 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 16 [2021-10-28 09:31:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:31:59,110 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-10-28 09:31:59,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2021-10-28 09:31:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-10-28 09:31:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:31:59,112 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:31:59,112 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:59,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:59,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:31:59,326 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:31:59,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:59,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1931404169, now seen corresponding path program 1 times [2021-10-28 09:31:59,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:59,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789802029] [2021-10-28 09:31:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:59,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:59,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:31:59,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503532521] [2021-10-28 09:31:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:59,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:31:59,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:59,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:31:59,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:31:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:31:59,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:31:59,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:31:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:31:59,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:31:59,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789802029] [2021-10-28 09:31:59,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:31:59,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503532521] [2021-10-28 09:31:59,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503532521] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:31:59,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:31:59,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:31:59,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292655893] [2021-10-28 09:31:59,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:31:59,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:31:59,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:31:59,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:31:59,655 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-28 09:31:59,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:31:59,725 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-10-28 09:31:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:31:59,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-10-28 09:31:59,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:31:59,729 INFO L225 Difference]: With dead ends: 45 [2021-10-28 09:31:59,729 INFO L226 Difference]: Without dead ends: 29 [2021-10-28 09:31:59,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:31:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-28 09:31:59,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-28 09:31:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-10-28 09:31:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-28 09:31:59,736 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2021-10-28 09:31:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:31:59,737 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-28 09:31:59,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-28 09:31:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-28 09:31:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:31:59,738 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:31:59,738 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:31:59,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:31:59,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:31:59,960 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:31:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:31:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1931463751, now seen corresponding path program 1 times [2021-10-28 09:31:59,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:31:59,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182774507] [2021-10-28 09:31:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:59,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:31:59,977 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:31:59,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134841383] [2021-10-28 09:31:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:31:59,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:31:59,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:31:59,979 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:31:59,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:32:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:00,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 09:32:00,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:00,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:00,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182774507] [2021-10-28 09:32:00,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:00,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134841383] [2021-10-28 09:32:00,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134841383] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:00,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:00,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 09:32:00,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453225292] [2021-10-28 09:32:00,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:32:00,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:00,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:32:00,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:32:00,436 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-10-28 09:32:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:00,691 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-10-28 09:32:00,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:32:00,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 17 [2021-10-28 09:32:00,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:00,692 INFO L225 Difference]: With dead ends: 37 [2021-10-28 09:32:00,692 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:32:00,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:32:00,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:32:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:32:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-28 09:32:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:32:00,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-28 09:32:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:00,693 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:32:00,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-10-28 09:32:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:32:00,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:32:00,696 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:32:00,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:32:00,697 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:32:00,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:00,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:32:00,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:32:00,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:00,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:00,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:00,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:00,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:01,289 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:32:01,289 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2021-10-28 09:32:01,289 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 54) no Hoare annotation was computed. [2021-10-28 09:32:01,289 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:32:01,290 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:32:01,290 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:32:01,290 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:32:01,290 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:32:01,291 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 37 38) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (<= ULTIMATE.start_main_~y~0 1))) (or (and (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 1)) .cse0 (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~q~0 (+ ULTIMATE.start_main_~p~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0))) .cse1 (<= 1 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~a~0) .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~a~0 1))) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~x~0) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-28 09:32:01,291 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:32:01,291 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-28 09:32:01,291 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-10-28 09:32:01,291 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~x~0 1)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 1))) (or (and (= ULTIMATE.start_main_~a~0 0) .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start_main_~b~0) (<= 0 ULTIMATE.start_main_~x~0) .cse3) (and (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 1)) .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~q~0 (+ ULTIMATE.start_main_~p~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0))) (= ULTIMATE.start_main_~p~0 1) .cse2 (<= 0 ULTIMATE.start_main_~a~0) .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~a~0 1))))) [2021-10-28 09:32:01,291 INFO L857 garLoopResultBuilder]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2021-10-28 09:32:01,292 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:32:01,292 INFO L860 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: true [2021-10-28 09:32:01,292 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:32:01,292 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:32:01,292 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:32:01,293 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:32:01,293 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-28 09:32:01,293 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-10-28 09:32:01,293 INFO L857 garLoopResultBuilder]: For program point L9-4(line 9) no Hoare annotation was computed. [2021-10-28 09:32:01,293 INFO L857 garLoopResultBuilder]: For program point L34-2(lines 34 55) no Hoare annotation was computed. [2021-10-28 09:32:01,293 INFO L860 garLoopResultBuilder]: At program point L59(lines 19 60) the Hoare annotation is: true [2021-10-28 09:32:01,294 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:32:01,294 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 54) no Hoare annotation was computed. [2021-10-28 09:32:01,294 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (<= ULTIMATE.start_main_~y~0 1))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse1 (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (<= ULTIMATE.start_main_~a~0 1) (<= 0 ULTIMATE.start_main_~x~0) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 1)) .cse0 (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~q~0 (+ ULTIMATE.start_main_~p~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0))) .cse1 (<= 1 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~a~0) .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~a~0 1))))) [2021-10-28 09:32:01,297 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 09:32:01,299 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:32:01,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:32:01 BoogieIcfgContainer [2021-10-28 09:32:01,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:32:01,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:32:01,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:32:01,315 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:32:01,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:31:54" (3/4) ... [2021-10-28 09:32:01,319 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:32:01,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 09:32:01,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:32:01,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:32:01,330 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:32:01,366 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:32:01,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:32:01,368 INFO L168 Benchmark]: Toolchain (without parser) took 8230.61 ms. Allocated memory was 104.9 MB in the beginning and 157.3 MB in the end (delta: 52.4 MB). Free memory was 75.1 MB in the beginning and 110.8 MB in the end (delta: -35.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:01,369 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 62.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:32:01,369 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.63 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 75.1 MB in the beginning and 104.6 MB in the end (delta: -29.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:01,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.42 ms. Allocated memory is still 130.0 MB. Free memory was 104.6 MB in the beginning and 102.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:01,370 INFO L168 Benchmark]: Boogie Preprocessor took 34.31 ms. Allocated memory is still 130.0 MB. Free memory was 102.9 MB in the beginning and 101.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:01,370 INFO L168 Benchmark]: RCFGBuilder took 428.05 ms. Allocated memory is still 130.0 MB. Free memory was 101.6 MB in the beginning and 90.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:01,371 INFO L168 Benchmark]: TraceAbstraction took 7288.80 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 90.3 MB in the beginning and 115.0 MB in the end (delta: -24.7 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:01,372 INFO L168 Benchmark]: Witness Printer took 51.89 ms. Allocated memory is still 157.3 MB. Free memory was 113.9 MB in the beginning and 110.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:01,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 62.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.63 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 75.1 MB in the beginning and 104.6 MB in the end (delta: -29.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.42 ms. Allocated memory is still 130.0 MB. Free memory was 104.6 MB in the beginning and 102.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.31 ms. Allocated memory is still 130.0 MB. Free memory was 102.9 MB in the beginning and 101.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 428.05 ms. Allocated memory is still 130.0 MB. Free memory was 101.6 MB in the beginning and 90.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7288.80 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 90.3 MB in the beginning and 115.0 MB in the end (delta: -24.7 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. * Witness Printer took 51.89 ms. Allocated memory is still 157.3 MB. Free memory was 113.9 MB in the beginning and 110.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 420 SDslu, 152 SDs, 0 SdLazy, 314 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, InterpolantAutomatonStates: 50, 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, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 212 HoareAnnotationTreeSize, 5 FomulaSimplifications, 373 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 105 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 80 ConstructedInterpolants, 1 QuantifiedInterpolants, 803 SizeOfPredicates, 49 NumberOfNonLiveVariables, 395 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 2/4 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((y == b + 1 && cond == 1) && x <= 1) && 1 <= cond) && q == p + a * p + p * b) && p == 1) && 1 <= y) && 0 <= a) && y <= 1) && x == a + 1) || (((((((((cond == 1 && a == x) && p == 1) && 1 == cond) && 1 <= b) && q == 0) && a <= 1) && 0 <= x) && y <= 1) && b == y) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && a == x) && p == 1) && 1 <= b) && q == 0) && a <= 1) && 0 <= x) && y <= 1) && b == y) || (((((((((y == b + 1 && cond == 1) && x <= 1) && 1 <= cond) && q == p + a * p + p * b) && p == 1) && 1 <= y) && 0 <= a) && y <= 1) && x == a + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((a == 0 && cond == 1) && x <= 1) && 1 <= y) && 1 <= b) && 0 <= x) && y <= 1) || (((((((((y == b + 1 && cond == 1) && x <= 1) && 1 <= cond) && q == p + a * p + p * b) && p == 1) && 1 <= y) && 0 <= a) && y <= 1) && x == a + 1) RESULT: Ultimate proved your program to be correct! [2021-10-28 09:32:01,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bbc93e-eb19-482c-8be8-76575ffcface/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...