./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa --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 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:05:30,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:05:30,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:05:30,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:05:30,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:05:30,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:05:30,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:05:30,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:05:30,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:05:30,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:05:30,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:05:30,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:05:30,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:05:30,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:05:30,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:05:30,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:05:30,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:05:30,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:05:30,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:05:30,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:05:30,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:05:30,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:05:30,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:05:30,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:05:30,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:05:30,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:05:30,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:05:30,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:05:30,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:05:30,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:05:30,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:05:30,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:05:30,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:05:30,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:05:30,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:05:30,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:05:30,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:05:30,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:05:30,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:05:30,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:05:30,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:05:30,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:05:30,778 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:05:30,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:05:30,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:05:30,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:05:30,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:05:30,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:05:30,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:05:30,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:05:30,780 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:05:30,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:05:30,780 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:05:30,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:05:30,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:05:30,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:05:30,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:05:30,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:05:30,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:05:30,781 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:05:30,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:05:30,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:05:30,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:05:30,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:05:30,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:05:30,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:05:30,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:05:30,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:05:30,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:05:30,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:05:30,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:05:30,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:05:30,783 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:05:30,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:05:30,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:05:30,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:05:30,783 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_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d [2021-12-06 18:05:30,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:05:30,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:05:30,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:05:30,980 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:05:30,981 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:05:30,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2021-12-06 18:05:31,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/data/0e43bd498/a5de77e6ead44a4c9dfa7e5b34e8a234/FLAG610d5de76 [2021-12-06 18:05:31,379 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:05:31,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2021-12-06 18:05:31,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/data/0e43bd498/a5de77e6ead44a4c9dfa7e5b34e8a234/FLAG610d5de76 [2021-12-06 18:05:31,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/data/0e43bd498/a5de77e6ead44a4c9dfa7e5b34e8a234 [2021-12-06 18:05:31,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:05:31,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:05:31,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:05:31,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:05:31,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:05:31,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5449587b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31, skipping insertion in model container [2021-12-06 18:05:31,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:05:31,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:05:31,542 WARN L230 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_22f640f0-ab16-4da6-bc97-bc63376aa397/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2021-12-06 18:05:31,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:05:31,558 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:05:31,567 WARN L230 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_22f640f0-ab16-4da6-bc97-bc63376aa397/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2021-12-06 18:05:31,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:05:31,582 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:05:31,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31 WrapperNode [2021-12-06 18:05:31,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:05:31,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:05:31,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:05:31,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:05:31,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,607 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-12-06 18:05:31,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:05:31,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:05:31,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:05:31,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:05:31,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:05:31,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:05:31,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:05:31,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:05:31,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (1/1) ... [2021-12-06 18:05:31,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:05:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:05:31,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:05:31,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:05:31,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:05:31,679 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 18:05:31,679 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 18:05:31,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:05:31,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:05:31,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:05:31,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 18:05:31,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 18:05:31,726 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:05:31,727 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:05:31,810 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:05:31,815 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:05:31,815 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:05:31,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:05:31 BoogieIcfgContainer [2021-12-06 18:05:31,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:05:31,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:05:31,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:05:31,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:05:31,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:05:31" (1/3) ... [2021-12-06 18:05:31,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515e145d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:05:31, skipping insertion in model container [2021-12-06 18:05:31,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:05:31" (2/3) ... [2021-12-06 18:05:31,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515e145d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:05:31, skipping insertion in model container [2021-12-06 18:05:31,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:05:31" (3/3) ... [2021-12-06 18:05:31,823 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound2.c [2021-12-06 18:05:31,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:05:31,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:05:31,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:05:31,868 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 [2021-12-06 18:05:31,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:05:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 18:05:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 18:05:31,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:05:31,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:31,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:05:31,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:05:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1418986431, now seen corresponding path program 1 times [2021-12-06 18:05:31,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:05:31,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561917968] [2021-12-06 18:05:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:31,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:05:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:05:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:32,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:05:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:32,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 18:05:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:05:32,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:05:32,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561917968] [2021-12-06 18:05:32,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561917968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:05:32,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:05:32,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:05:32,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629658621] [2021-12-06 18:05:32,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:05:32,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:05:32,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:05:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:05:32,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:05:32,057 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:05:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:05:32,075 INFO L93 Difference]: Finished difference Result 65 states and 104 transitions. [2021-12-06 18:05:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:05:32,077 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-12-06 18:05:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:05:32,083 INFO L225 Difference]: With dead ends: 65 [2021-12-06 18:05:32,084 INFO L226 Difference]: Without dead ends: 30 [2021-12-06 18:05:32,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:05:32,091 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:05:32,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:05:32,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-06 18:05:32,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-06 18:05:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 18:05:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-12-06 18:05:32,127 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 24 [2021-12-06 18:05:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:05:32,127 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-12-06 18:05:32,127 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:05:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-12-06 18:05:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 18:05:32,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:05:32,130 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:32,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:05:32,130 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:05:32,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:05:32,131 INFO L85 PathProgramCache]: Analyzing trace with hash 240368937, now seen corresponding path program 1 times [2021-12-06 18:05:32,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:05:32,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929473080] [2021-12-06 18:05:32,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:32,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:05:32,157 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:05:32,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211002537] [2021-12-06 18:05:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:32,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:32,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:05:32,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:05:32,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:05:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:32,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 18:05:32,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:05:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:05:32,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:05:32,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:05:32,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929473080] [2021-12-06 18:05:32,389 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:05:32,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211002537] [2021-12-06 18:05:32,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211002537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:05:32,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:05:32,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:05:32,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862654668] [2021-12-06 18:05:32,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:05:32,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:05:32,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:05:32,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:05:32,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:05:32,393 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:05:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:05:32,479 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-12-06 18:05:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:05:32,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-12-06 18:05:32,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:05:32,481 INFO L225 Difference]: With dead ends: 41 [2021-12-06 18:05:32,481 INFO L226 Difference]: Without dead ends: 39 [2021-12-06 18:05:32,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:05:32,483 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:05:32,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 177 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:05:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-06 18:05:32,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-12-06 18:05:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 18:05:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-12-06 18:05:32,496 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 24 [2021-12-06 18:05:32,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:05:32,496 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-12-06 18:05:32,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:05:32,497 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-12-06 18:05:32,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:05:32,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:05:32,498 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:32,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:05:32,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:32,700 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:05:32,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:05:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash -854318377, now seen corresponding path program 1 times [2021-12-06 18:05:32,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:05:32,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959731732] [2021-12-06 18:05:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:32,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:05:32,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:05:32,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787995156] [2021-12-06 18:05:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:32,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:32,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:05:32,753 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:05:32,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:05:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:32,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 18:05:32,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:05:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:05:33,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:05:33,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:05:33,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959731732] [2021-12-06 18:05:33,009 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:05:33,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787995156] [2021-12-06 18:05:33,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787995156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:05:33,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:05:33,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:05:33,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724232662] [2021-12-06 18:05:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:05:33,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:05:33,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:05:33,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:05:33,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:05:33,011 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-06 18:05:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:05:33,107 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2021-12-06 18:05:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:05:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2021-12-06 18:05:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:05:33,109 INFO L225 Difference]: With dead ends: 53 [2021-12-06 18:05:33,109 INFO L226 Difference]: Without dead ends: 50 [2021-12-06 18:05:33,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:05:33,110 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 39 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:05:33,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 174 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:05:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-06 18:05:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-12-06 18:05:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 18:05:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2021-12-06 18:05:33,119 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 29 [2021-12-06 18:05:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:05:33,119 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2021-12-06 18:05:33,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-06 18:05:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2021-12-06 18:05:33,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:05:33,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:05:33,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:33,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:05:33,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:33,323 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:05:33,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:05:33,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1997084946, now seen corresponding path program 1 times [2021-12-06 18:05:33,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:05:33,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500416304] [2021-12-06 18:05:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:33,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:05:33,376 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:05:33,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683549026] [2021-12-06 18:05:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:33,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:33,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:05:33,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:05:33,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:05:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:33,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 18:05:33,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:05:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:05:33,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:05:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 18:05:33,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:05:33,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500416304] [2021-12-06 18:05:33,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:05:33,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683549026] [2021-12-06 18:05:33,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683549026] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 18:05:33,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:05:33,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2021-12-06 18:05:33,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669450621] [2021-12-06 18:05:33,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:05:33,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:05:33,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:05:33,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:05:33,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:05:33,642 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 18:05:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:05:33,677 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2021-12-06 18:05:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:05:33,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2021-12-06 18:05:33,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:05:33,678 INFO L225 Difference]: With dead ends: 55 [2021-12-06 18:05:33,678 INFO L226 Difference]: Without dead ends: 53 [2021-12-06 18:05:33,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:05:33,680 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:05:33,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 100 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:05:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-06 18:05:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-12-06 18:05:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 18:05:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2021-12-06 18:05:33,690 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 36 [2021-12-06 18:05:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:05:33,690 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2021-12-06 18:05:33,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 18:05:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2021-12-06 18:05:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 18:05:33,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:05:33,692 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:33,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:05:33,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:33,894 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:05:33,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:05:33,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2056573358, now seen corresponding path program 1 times [2021-12-06 18:05:33,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:05:33,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790978167] [2021-12-06 18:05:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:33,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:05:33,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:05:33,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86623968] [2021-12-06 18:05:33,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:33,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:33,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:05:33,947 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:05:33,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:05:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:34,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:05:34,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:05:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 18:05:34,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:05:34,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:05:34,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790978167] [2021-12-06 18:05:34,093 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:05:34,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86623968] [2021-12-06 18:05:34,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86623968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:05:34,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:05:34,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:05:34,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989876783] [2021-12-06 18:05:34,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:05:34,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:05:34,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:05:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:05:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:05:34,094 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 18:05:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:05:34,152 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2021-12-06 18:05:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:05:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2021-12-06 18:05:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:05:34,153 INFO L225 Difference]: With dead ends: 59 [2021-12-06 18:05:34,153 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 18:05:34,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:05:34,154 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:05:34,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 169 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:05:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 18:05:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-06 18:05:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 18:05:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-12-06 18:05:34,163 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 46 [2021-12-06 18:05:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:05:34,164 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-12-06 18:05:34,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 18:05:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-12-06 18:05:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:05:34,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:05:34,165 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:34,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:05:34,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:34,367 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:05:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:05:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2085516536, now seen corresponding path program 1 times [2021-12-06 18:05:34,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:05:34,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817231090] [2021-12-06 18:05:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:34,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:05:34,402 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:05:34,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48834844] [2021-12-06 18:05:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:34,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:34,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:05:34,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:05:34,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:05:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:34,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:05:34,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:05:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 18:05:34,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:05:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 18:05:34,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:05:34,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817231090] [2021-12-06 18:05:34,622 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:05:34,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48834844] [2021-12-06 18:05:34,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48834844] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:05:34,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:05:34,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-12-06 18:05:34,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234552605] [2021-12-06 18:05:34,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:05:34,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:05:34,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:05:34,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:05:34,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:05:34,624 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 18:05:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:05:34,688 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-12-06 18:05:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:05:34,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 52 [2021-12-06 18:05:34,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:05:34,690 INFO L225 Difference]: With dead ends: 63 [2021-12-06 18:05:34,690 INFO L226 Difference]: Without dead ends: 61 [2021-12-06 18:05:34,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:05:34,691 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:05:34,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 121 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:05:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-06 18:05:34,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-12-06 18:05:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 18:05:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2021-12-06 18:05:34,702 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 52 [2021-12-06 18:05:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:05:34,703 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2021-12-06 18:05:34,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 18:05:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2021-12-06 18:05:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 18:05:34,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:05:34,705 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:34,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:05:34,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:34,906 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:05:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:05:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1724367982, now seen corresponding path program 1 times [2021-12-06 18:05:34,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:05:34,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055755323] [2021-12-06 18:05:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:34,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:05:34,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:05:34,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35325486] [2021-12-06 18:05:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:34,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:34,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:05:34,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:05:34,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:05:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:34,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 18:05:34,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:05:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 18:05:35,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:05:35,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:05:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055755323] [2021-12-06 18:05:35,548 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:05:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35325486] [2021-12-06 18:05:35,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35325486] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:05:35,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:05:35,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-12-06 18:05:35,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674837772] [2021-12-06 18:05:35,548 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 18:05:35,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:05:35,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:05:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:05:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=64, Unknown=2, NotChecked=0, Total=90 [2021-12-06 18:05:35,550 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-06 18:05:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:05:35,631 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2021-12-06 18:05:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:05:35,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 59 [2021-12-06 18:05:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:05:35,632 INFO L225 Difference]: With dead ends: 93 [2021-12-06 18:05:35,632 INFO L226 Difference]: Without dead ends: 90 [2021-12-06 18:05:35,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=80, Unknown=2, NotChecked=0, Total=110 [2021-12-06 18:05:35,633 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 20 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:05:35,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 218 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:05:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-06 18:05:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2021-12-06 18:05:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 18:05:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2021-12-06 18:05:35,643 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 59 [2021-12-06 18:05:35,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:05:35,643 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2021-12-06 18:05:35,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-06 18:05:35,643 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2021-12-06 18:05:35,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-06 18:05:35,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:05:35,645 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:35,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 18:05:35,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:35,847 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:05:35,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:05:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash 350278506, now seen corresponding path program 1 times [2021-12-06 18:05:35,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:05:35,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11126483] [2021-12-06 18:05:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:35,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:05:35,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:05:35,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544278785] [2021-12-06 18:05:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:35,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:35,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:05:35,884 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:05:35,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:05:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:05:35,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 18:05:35,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:05:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-06 18:05:36,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:05:36,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:05:36,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11126483] [2021-12-06 18:05:36,632 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:05:36,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544278785] [2021-12-06 18:05:36,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544278785] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:05:36,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:05:36,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-12-06 18:05:36,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044674959] [2021-12-06 18:05:36,632 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 18:05:36,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:05:36,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:05:36,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:05:36,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:05:36,633 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2021-12-06 18:05:36,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:05:36,802 INFO L93 Difference]: Finished difference Result 145 states and 176 transitions. [2021-12-06 18:05:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:05:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 82 [2021-12-06 18:05:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:05:36,804 INFO L225 Difference]: With dead ends: 145 [2021-12-06 18:05:36,804 INFO L226 Difference]: Without dead ends: 104 [2021-12-06 18:05:36,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:05:36,805 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 31 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:05:36,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 331 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:05:36,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-06 18:05:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2021-12-06 18:05:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 60 states have (on average 1.1) internal successors, (66), 61 states have internal predecessors, (66), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-06 18:05:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2021-12-06 18:05:36,820 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 82 [2021-12-06 18:05:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:05:36,820 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2021-12-06 18:05:36,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2021-12-06 18:05:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2021-12-06 18:05:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 18:05:36,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:05:36,823 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:36,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:05:37,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:37,025 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:05:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:05:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash 7979973, now seen corresponding path program 2 times [2021-12-06 18:05:37,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:05:37,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951475353] [2021-12-06 18:05:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:37,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:05:37,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:05:37,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588151847] [2021-12-06 18:05:37,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:05:37,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:37,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:05:37,069 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:05:37,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:05:37,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:05:37,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:05:37,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:05:37,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:05:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-12-06 18:05:37,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:05:37,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:05:37,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951475353] [2021-12-06 18:05:37,267 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:05:37,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588151847] [2021-12-06 18:05:37,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588151847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:05:37,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:05:37,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:05:37,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710623154] [2021-12-06 18:05:37,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:05:37,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:05:37,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:05:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:05:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:05:37,268 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 18:05:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:05:37,301 INFO L93 Difference]: Finished difference Result 149 states and 182 transitions. [2021-12-06 18:05:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:05:37,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 89 [2021-12-06 18:05:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:05:37,303 INFO L225 Difference]: With dead ends: 149 [2021-12-06 18:05:37,303 INFO L226 Difference]: Without dead ends: 98 [2021-12-06 18:05:37,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:05:37,304 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:05:37,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 113 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:05:37,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-06 18:05:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2021-12-06 18:05:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 57 states have internal predecessors, (61), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-06 18:05:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 116 transitions. [2021-12-06 18:05:37,319 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 116 transitions. Word has length 89 [2021-12-06 18:05:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:05:37,320 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 116 transitions. [2021-12-06 18:05:37,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 18:05:37,320 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 116 transitions. [2021-12-06 18:05:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 18:05:37,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:05:37,322 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:37,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 18:05:37,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:37,522 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:05:37,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:05:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1040144146, now seen corresponding path program 2 times [2021-12-06 18:05:37,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:05:37,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515543443] [2021-12-06 18:05:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:05:37,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:05:37,535 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 18:05:37,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633696549] [2021-12-06 18:05:37,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:05:37,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:05:37,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:05:37,537 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:05:37,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:05:37,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:05:37,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:05:37,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 18:05:37,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:05:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 93 proven. 11 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-12-06 18:05:37,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:05:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-12-06 18:05:38,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:05:38,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515543443] [2021-12-06 18:05:38,133 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 18:05:38,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633696549] [2021-12-06 18:05:38,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633696549] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:05:38,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 18:05:38,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-12-06 18:05:38,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062154595] [2021-12-06 18:05:38,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 18:05:38,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 18:05:38,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:05:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 18:05:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:05:38,135 INFO L87 Difference]: Start difference. First operand 95 states and 116 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 13 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (34), 12 states have call predecessors, (34), 13 states have call successors, (34) [2021-12-06 18:05:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:05:38,301 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2021-12-06 18:05:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:05:38,302 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 13 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (34), 12 states have call predecessors, (34), 13 states have call successors, (34) Word has length 105 [2021-12-06 18:05:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:05:38,302 INFO L225 Difference]: With dead ends: 109 [2021-12-06 18:05:38,302 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 18:05:38,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-12-06 18:05:38,304 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:05:38,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 285 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:05:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 18:05:38,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 18:05:38,305 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) [2021-12-06 18:05:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 18:05:38,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2021-12-06 18:05:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:05:38,305 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:05:38,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 13 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (34), 12 states have call predecessors, (34), 13 states have call successors, (34) [2021-12-06 18:05:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 18:05:38,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 18:05:38,307 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 18:05:38,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 18:05:38,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:05:38,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 18:05:39,249 INFO L858 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2021-12-06 18:05:39,249 INFO L858 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-12-06 18:05:39,249 INFO L861 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2021-12-06 18:05:39,250 INFO L858 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-12-06 18:05:39,250 INFO L854 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse6 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| 1) .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~a~0#1|) .cse6 (<= (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)) (and (<= (div |ULTIMATE.start_main_~r~0#1| (- 4)) (div (* |ULTIMATE.start_main_~b~0#1| (- 1)) 4)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= (mod |ULTIMATE.start_main_~b~0#1| (- 2)) 0)))) [2021-12-06 18:05:39,250 INFO L854 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse6 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| 1) .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~a~0#1|) .cse6 (<= (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)) (and (<= (div |ULTIMATE.start_main_~r~0#1| (- 4)) (div (* |ULTIMATE.start_main_~b~0#1| (- 1)) 4)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= (mod |ULTIMATE.start_main_~b~0#1| (- 2)) 0)))) [2021-12-06 18:05:39,250 INFO L858 garLoopResultBuilder]: For program point L40(lines 38 62) no Hoare annotation was computed. [2021-12-06 18:05:39,250 INFO L861 garLoopResultBuilder]: At program point L65(lines 22 66) the Hoare annotation is: true [2021-12-06 18:05:39,250 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 18:05:39,250 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 18:05:39,250 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 18:05:39,250 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse6 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| 1) .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~a~0#1|) .cse6 (<= (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)) (and (<= (div |ULTIMATE.start_main_~r~0#1| (- 4)) (div (* |ULTIMATE.start_main_~b~0#1| (- 1)) 4)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= (mod |ULTIMATE.start_main_~b~0#1| (- 2)) 0)))) [2021-12-06 18:05:39,250 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 18:05:39,250 INFO L854 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2021-12-06 18:05:39,250 INFO L854 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2021-12-06 18:05:39,250 INFO L858 garLoopResultBuilder]: For program point L50(lines 47 59) no Hoare annotation was computed. [2021-12-06 18:05:39,251 INFO L854 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 (= |ULTIMATE.start_main_~q~0#1| 1) (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3) (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse2 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) .cse3) (let ((.cse4 (* 2 |ULTIMATE.start_main_~y~0#1|))) (and (<= (+ .cse4 |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse2 (<= 0 |ULTIMATE.start_main_~r~0#1|) (< |ULTIMATE.start_main_~r~0#1| .cse4) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse3)))) [2021-12-06 18:05:39,251 INFO L854 garLoopResultBuilder]: At program point L38-3(lines 38 62) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|))) (or (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 1)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) (let ((.cse3 (* 2 |ULTIMATE.start_main_~y~0#1|))) (and (<= (+ .cse3 |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse2 (<= 0 |ULTIMATE.start_main_~r~0#1|) (< |ULTIMATE.start_main_~r~0#1| .cse3) (= 2 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2))))) [2021-12-06 18:05:39,251 INFO L854 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse8 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= (* 2 .cse8) |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= .cse8 |ULTIMATE.start_main_~b~0#1|)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~a~0#1| 1) .cse4 .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= (mod |ULTIMATE.start_main_~b~0#1| (- 2)) 0))))) [2021-12-06 18:05:39,251 INFO L858 garLoopResultBuilder]: For program point L55-1(line 55) no Hoare annotation was computed. [2021-12-06 18:05:39,251 INFO L854 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse6 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| 1) .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~a~0#1|) .cse6 (<= (* 2 |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)) (and (<= (div |ULTIMATE.start_main_~r~0#1| (- 4)) (div (* |ULTIMATE.start_main_~b~0#1| (- 1)) 4)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= (mod |ULTIMATE.start_main_~b~0#1| (- 2)) 0)))) [2021-12-06 18:05:39,251 INFO L858 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2021-12-06 18:05:39,251 INFO L854 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse1 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 (= |ULTIMATE.start_main_~q~0#1| 1) (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3) (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse2 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| 0) .cse3) (let ((.cse4 (* 2 |ULTIMATE.start_main_~y~0#1|))) (and (<= (+ .cse4 |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse2 (<= 0 |ULTIMATE.start_main_~r~0#1|) (< |ULTIMATE.start_main_~r~0#1| .cse4) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse3)))) [2021-12-06 18:05:39,251 INFO L854 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and (<= (div |ULTIMATE.start_main_~r~0#1| (- 4)) (div (* |ULTIMATE.start_main_~b~0#1| (- 1)) 4)) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 (= (mod |ULTIMATE.start_main_~b~0#1| (- 2)) 0)) (and .cse0 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse1 .cse2 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 (= |ULTIMATE.start_main_~q~0#1| 1) (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4) (let ((.cse5 (* 2 |ULTIMATE.start_main_~y~0#1|))) (and (<= (+ .cse5 |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse3 (<= 0 |ULTIMATE.start_main_~r~0#1|) (< |ULTIMATE.start_main_~r~0#1| .cse5) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse4)))) [2021-12-06 18:05:39,251 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2021-12-06 18:05:39,252 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-12-06 18:05:39,252 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2021-12-06 18:05:39,252 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2021-12-06 18:05:39,252 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-12-06 18:05:39,252 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-12-06 18:05:39,252 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-12-06 18:05:39,252 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-12-06 18:05:39,252 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-12-06 18:05:39,252 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-12-06 18:05:39,254 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 18:05:39,255 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:05:39,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:05:39 BoogieIcfgContainer [2021-12-06 18:05:39,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:05:39,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:05:39,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:05:39,273 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:05:39,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:05:31" (3/4) ... [2021-12-06 18:05:39,275 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 18:05:39,280 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-06 18:05:39,280 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-06 18:05:39,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-06 18:05:39,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 18:05:39,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 18:05:39,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 18:05:39,306 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:05:39,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:05:39,307 INFO L158 Benchmark]: Toolchain (without parser) took 7907.49ms. Allocated memory was 102.8MB in the beginning and 142.6MB in the end (delta: 39.8MB). Free memory was 65.7MB in the beginning and 114.8MB in the end (delta: -49.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:05:39,307 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:05:39,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.90ms. Allocated memory is still 102.8MB. Free memory was 65.6MB in the beginning and 78.4MB in the end (delta: -12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 18:05:39,308 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.86ms. Allocated memory is still 102.8MB. Free memory was 78.4MB in the beginning and 76.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:05:39,308 INFO L158 Benchmark]: Boogie Preprocessor took 15.05ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 75.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:05:39,308 INFO L158 Benchmark]: RCFGBuilder took 193.65ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 65.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 18:05:39,309 INFO L158 Benchmark]: TraceAbstraction took 7454.43ms. Allocated memory was 102.8MB in the beginning and 142.6MB in the end (delta: 39.8MB). Free memory was 65.5MB in the beginning and 118.0MB in the end (delta: -52.5MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. [2021-12-06 18:05:39,309 INFO L158 Benchmark]: Witness Printer took 33.93ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 114.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:05:39,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.90ms. Allocated memory is still 102.8MB. Free memory was 65.6MB in the beginning and 78.4MB in the end (delta: -12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.86ms. Allocated memory is still 102.8MB. Free memory was 78.4MB in the beginning and 76.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.05ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 75.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 193.65ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 65.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7454.43ms. Allocated memory was 102.8MB in the beginning and 142.6MB in the end (delta: 39.8MB). Free memory was 65.5MB in the beginning and 118.0MB in the end (delta: -52.5MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. * Witness Printer took 33.93ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 114.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 17]: 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 3 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.4s, OverallIterations: 10, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 237 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 185 mSDsluCounter, 1731 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1348 mSDsCounter, 144 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 913 IncrementalHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 144 mSolverCounterUnsat, 383 mSDtfsCounter, 913 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 819 GetRequests, 715 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=8, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 76 PreInvPairs, 106 NumberOfFragments, 790 HoareAnnotationTreeSize, 76 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 743 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 546 NumberOfCodeBlocks, 546 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 726 ConstructedInterpolants, 0 QuantifiedInterpolants, 2130 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1258 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 1603/1671 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 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((y <= 2 && 1 <= y) && y * a == b) && a == 1) && r == x) && q == 0) && 1 <= r) && x <= 2) || ((((((1 <= y && y * a == b) && r == x) && q == 0) && 2 == a) && x <= 2) && 2 * y <= r)) || ((((((((r / -4 <= b * -1 / 4 && y <= 2) && 1 <= y) && y * a == b) && r == x) && q == 0) && 1 <= r) && x <= 2) && b % -2 == 0) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((0 <= x && x == r + y) && y <= 2) && b <= y) && y * a == b) && q == 1) && r < y) && x <= 2) || (((((((0 <= x && y <= 2) && 1 <= y) && y * a == b) && r == x) && q == 0) && a == 0) && x <= 2)) || (((((2 * y + r <= x && y * a == b) && 0 <= r) && r < 2 * y) && 2 == q) && x <= 2) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-06 18:05:39,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f640f0-ab16-4da6-bc97-bc63376aa397/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE