./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound50.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_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/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_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/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_2bb6f770-7043-4d77-aa9a-e041c52f9302/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 3b27cf24a9b45c76034fb9a60cae976f5ca5dfa5338fef373d189f4ae84c7ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:39:06,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:39:06,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:39:06,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:39:06,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:39:06,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:39:06,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:39:06,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:39:06,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:39:06,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:39:06,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:39:06,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:39:06,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:39:06,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:39:06,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:39:06,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:39:06,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:39:06,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:39:06,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:39:06,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:39:06,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:39:06,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:39:06,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:39:06,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:39:06,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:39:06,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:39:06,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:39:06,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:39:06,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:39:06,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:39:06,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:39:06,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:39:06,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:39:06,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:39:06,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:39:06,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:39:06,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:39:06,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:39:06,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:39:06,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:39:06,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:39:06,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:39:06,668 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:39:06,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:39:06,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:39:06,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:39:06,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:39:06,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:39:06,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:39:06,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:39:06,670 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:39:06,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:39:06,671 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:39:06,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:39:06,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:39:06,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:39:06,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:39:06,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:39:06,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:39:06,672 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:39:06,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:39:06,673 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:39:06,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:39:06,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:39:06,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:39:06,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:39:06,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:39:06,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:39:06,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:39:06,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:39:06,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:39:06,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:39:06,675 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:39:06,675 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:39:06,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:39:06,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:39:06,676 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_2bb6f770-7043-4d77-aa9a-e041c52f9302/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b27cf24a9b45c76034fb9a60cae976f5ca5dfa5338fef373d189f4ae84c7ed4 [2021-12-07 01:39:06,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:39:06,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:39:06,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:39:06,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:39:06,899 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:39:06,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound50.c [2021-12-07 01:39:06,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/data/91777f479/56d3c6ff0fc347af91bed13bc627b0a1/FLAG525de868d [2021-12-07 01:39:07,304 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:39:07,304 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound50.c [2021-12-07 01:39:07,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/data/91777f479/56d3c6ff0fc347af91bed13bc627b0a1/FLAG525de868d [2021-12-07 01:39:07,319 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/data/91777f479/56d3c6ff0fc347af91bed13bc627b0a1 [2021-12-07 01:39:07,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:39:07,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:39:07,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:39:07,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:39:07,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:39:07,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1b510e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07, skipping insertion in model container [2021-12-07 01:39:07,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:39:07,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:39:07,450 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_2bb6f770-7043-4d77-aa9a-e041c52f9302/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound50.c[524,537] [2021-12-07 01:39:07,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:39:07,468 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:39:07,477 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_2bb6f770-7043-4d77-aa9a-e041c52f9302/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound50.c[524,537] [2021-12-07 01:39:07,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:39:07,493 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:39:07,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07 WrapperNode [2021-12-07 01:39:07,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:39:07,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:39:07,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:39:07,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:39:07,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,520 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-12-07 01:39:07,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:39:07,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:39:07,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:39:07,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:39:07,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:39:07,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:39:07,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:39:07,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:39:07,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (1/1) ... [2021-12-07 01:39:07,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:39:07,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:39:07,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:39:07,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:39:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:39:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 01:39:07,608 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 01:39:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:39:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:39:07,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:39:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 01:39:07,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 01:39:07,655 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:39:07,657 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:39:07,744 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:39:07,749 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:39:07,749 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 01:39:07,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:39:07 BoogieIcfgContainer [2021-12-07 01:39:07,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:39:07,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:39:07,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:39:07,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:39:07,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:39:07" (1/3) ... [2021-12-07 01:39:07,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9abccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:39:07, skipping insertion in model container [2021-12-07 01:39:07,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:39:07" (2/3) ... [2021-12-07 01:39:07,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9abccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:39:07, skipping insertion in model container [2021-12-07 01:39:07,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:39:07" (3/3) ... [2021-12-07 01:39:07,756 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound50.c [2021-12-07 01:39:07,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:39:07,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:39:07,795 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:39:07,800 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 [2021-12-07 01:39:07,800 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:39:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-07 01:39:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 01:39:07,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:39:07,816 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:39:07,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:39:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:39:07,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1472905330, now seen corresponding path program 1 times [2021-12-07 01:39:07,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:39:07,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307252050] [2021-12-07 01:39:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:39:07,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:39:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 01:39:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:39:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-07 01:39:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 01:39:07,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:39:07,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307252050] [2021-12-07 01:39:07,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307252050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:39:07,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:39:07,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:39:07,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398829680] [2021-12-07 01:39:07,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:39:07,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:39:07,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:39:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:39:08,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:39:08,020 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2021-12-07 01:39:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:39:08,041 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2021-12-07 01:39:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:39:08,043 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 [2021-12-07 01:39:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:39:08,051 INFO L225 Difference]: With dead ends: 55 [2021-12-07 01:39:08,052 INFO L226 Difference]: Without dead ends: 25 [2021-12-07 01:39:08,055 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 [2021-12-07 01:39:08,059 INFO L933 BasicCegarLoop]: 36 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, 36 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 [2021-12-07 01:39:08,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:39:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-07 01:39:08,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-07 01:39:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-07 01:39:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-12-07 01:39:08,099 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 24 [2021-12-07 01:39:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:39:08,099 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-12-07 01:39:08,099 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) [2021-12-07 01:39:08,100 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-12-07 01:39:08,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 01:39:08,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:39:08,102 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:39:08,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:39:08,102 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:39:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:39:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash 324198000, now seen corresponding path program 1 times [2021-12-07 01:39:08,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:39:08,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150431529] [2021-12-07 01:39:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:39:08,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:39:08,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:39:08,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199302716] [2021-12-07 01:39:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:39:08,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:39:08,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:39:08,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:39:08,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:39:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:08,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 01:39:08,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:39:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 01:39:08,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:39:08,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:39:08,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150431529] [2021-12-07 01:39:08,325 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:39:08,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199302716] [2021-12-07 01:39:08,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199302716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:39:08,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:39:08,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:39:08,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003464889] [2021-12-07 01:39:08,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:39:08,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:39:08,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:39:08,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:39:08,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:39:08,328 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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), 1 states have call successors, (3) [2021-12-07 01:39:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:39:08,384 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2021-12-07 01:39:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:39:08,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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), 1 states have call successors, (3) Word has length 24 [2021-12-07 01:39:08,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:39:08,386 INFO L225 Difference]: With dead ends: 39 [2021-12-07 01:39:08,386 INFO L226 Difference]: Without dead ends: 37 [2021-12-07 01:39:08,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:39:08,388 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:39:08,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 85 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:39:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-07 01:39:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2021-12-07 01:39:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-07 01:39:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-12-07 01:39:08,396 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 24 [2021-12-07 01:39:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:39:08,396 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-12-07 01:39:08,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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), 1 states have call successors, (3) [2021-12-07 01:39:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-12-07 01:39:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:39:08,397 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:39:08,397 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, 1] [2021-12-07 01:39:08,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:39:08,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:39:08,599 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:39:08,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:39:08,600 INFO L85 PathProgramCache]: Analyzing trace with hash 693549193, now seen corresponding path program 1 times [2021-12-07 01:39:08,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:39:08,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400453053] [2021-12-07 01:39:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:39:08,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:39:08,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:39:08,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952456663] [2021-12-07 01:39:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:39:08,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:39:08,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:39:08,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:39:08,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:39:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:08,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-07 01:39:08,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:39:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:39:09,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:39:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 01:39:09,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:39:09,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400453053] [2021-12-07 01:39:09,232 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:39:09,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952456663] [2021-12-07 01:39:09,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952456663] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:39:09,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:39:09,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2021-12-07 01:39:09,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623813242] [2021-12-07 01:39:09,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:39:09,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 01:39:09,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:39:09,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 01:39:09,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:39:09,235 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:39:09,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:39:09,481 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2021-12-07 01:39:09,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:39:09,482 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2021-12-07 01:39:09,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:39:09,484 INFO L225 Difference]: With dead ends: 47 [2021-12-07 01:39:09,484 INFO L226 Difference]: Without dead ends: 45 [2021-12-07 01:39:09,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-12-07 01:39:09,485 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:39:09,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 108 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:39:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-07 01:39:09,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2021-12-07 01:39:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-07 01:39:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2021-12-07 01:39:09,492 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 30 [2021-12-07 01:39:09,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:39:09,492 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2021-12-07 01:39:09,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:39:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2021-12-07 01:39:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 01:39:09,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:39:09,494 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:39:09,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-07 01:39:09,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:39:09,695 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:39:09,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:39:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1087866724, now seen corresponding path program 1 times [2021-12-07 01:39:09,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:39:09,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174444822] [2021-12-07 01:39:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:39:09,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:39:09,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:39:09,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441635744] [2021-12-07 01:39:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:39:09,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:39:09,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:39:09,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:39:09,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:39:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:09,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-07 01:39:09,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:39:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:39:19,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:39:40,896 WARN L227 SmtUtils]: Spent 14.59s on a formula simplification. DAG size of input: 47 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:39:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:39:57,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:39:57,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174444822] [2021-12-07 01:39:57,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:39:57,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441635744] [2021-12-07 01:39:57,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441635744] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:39:57,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:39:57,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 20 [2021-12-07 01:39:57,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550331627] [2021-12-07 01:39:57,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:39:57,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-07 01:39:57,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:39:57,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-07 01:39:57,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=312, Unknown=1, NotChecked=0, Total=380 [2021-12-07 01:39:57,985 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-07 01:40:21,258 WARN L227 SmtUtils]: Spent 22.42s on a formula simplification. DAG size of input: 62 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:40:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:40:22,157 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-12-07 01:40:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:40:22,158 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 32 [2021-12-07 01:40:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:40:22,159 INFO L225 Difference]: With dead ends: 61 [2021-12-07 01:40:22,159 INFO L226 Difference]: Without dead ends: 57 [2021-12-07 01:40:22,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=119, Invalid=530, Unknown=1, NotChecked=0, Total=650 [2021-12-07 01:40:22,160 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 101 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:40:22,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 171 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 01:40:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-07 01:40:22,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 31. [2021-12-07 01:40:22,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-07 01:40:22,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-07 01:40:22,167 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 32 [2021-12-07 01:40:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:40:22,167 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-07 01:40:22,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-07 01:40:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-07 01:40:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-07 01:40:22,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:40:22,169 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] [2021-12-07 01:40:22,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:40:22,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:40:22,370 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:40:22,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:40:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash 926838000, now seen corresponding path program 1 times [2021-12-07 01:40:22,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:40:22,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869796817] [2021-12-07 01:40:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:40:22,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:40:22,391 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:40:22,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992238032] [2021-12-07 01:40:22,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:40:22,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:40:22,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:40:22,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:40:22,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:40:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:22,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 01:40:22,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:40:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:40:22,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:40:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 01:40:22,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:40:22,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869796817] [2021-12-07 01:40:22,548 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:40:22,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992238032] [2021-12-07 01:40:22,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992238032] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-07 01:40:22,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:40:22,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2021-12-07 01:40:22,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071890320] [2021-12-07 01:40:22,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:40:22,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:40:22,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:40:22,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:40:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:40:22,549 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:40:22,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:40:22,688 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-12-07 01:40:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:40:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2021-12-07 01:40:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:40:22,689 INFO L225 Difference]: With dead ends: 31 [2021-12-07 01:40:22,689 INFO L226 Difference]: Without dead ends: 0 [2021-12-07 01:40:22,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:40:22,690 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:40:22,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 103 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:40:22,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-07 01:40:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-07 01:40:22,691 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) [2021-12-07 01:40:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-07 01:40:22,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-12-07 01:40:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:40:22,691 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 01:40:22,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:40:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-07 01:40:22,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-07 01:40:22,693 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 01:40:22,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:40:22,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:40:22,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-07 01:40:23,229 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-07 01:40:23,229 INFO L858 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2021-12-07 01:40:23,229 INFO L858 garLoopResultBuilder]: For program point L58(line 58) no Hoare annotation was computed. [2021-12-07 01:40:23,229 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2021-12-07 01:40:23,229 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 54) no Hoare annotation was computed. [2021-12-07 01:40:23,229 INFO L854 garLoopResultBuilder]: At program point L34-2(lines 34 55) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) (= (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 0)) [2021-12-07 01:40:23,229 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-07 01:40:23,230 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-07 01:40:23,230 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-07 01:40:23,230 INFO L861 garLoopResultBuilder]: At program point L59(lines 19 60) the Hoare annotation is: true [2021-12-07 01:40:23,230 INFO L854 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50)) [2021-12-07 01:40:23,230 INFO L854 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) (or (= (mod |ULTIMATE.start_main_~y~0#1| 2) 0) (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 0 (mod |ULTIMATE.start_main_~x~0#1| 2)) (= (let ((.cse0 (div |ULTIMATE.start_main_~x~0#1| 2))) (+ (* 4 .cse0) (* 4 (* .cse0 (div |ULTIMATE.start_main_~y~0#1| 2))))) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)))) [2021-12-07 01:40:23,230 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) (= (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 0)) [2021-12-07 01:40:23,230 INFO L861 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2021-12-07 01:40:23,230 INFO L858 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-12-07 01:40:23,230 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 54) no Hoare annotation was computed. [2021-12-07 01:40:23,230 INFO L854 garLoopResultBuilder]: At program point L47-2(lines 34 55) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) (= (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|))) [2021-12-07 01:40:23,230 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 50) (= (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|))) [2021-12-07 01:40:23,230 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 34 55) no Hoare annotation was computed. [2021-12-07 01:40:23,230 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-12-07 01:40:23,231 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-12-07 01:40:23,231 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-12-07 01:40:23,231 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-12-07 01:40:23,231 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-12-07 01:40:23,231 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-12-07 01:40:23,231 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-12-07 01:40:23,231 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-12-07 01:40:23,231 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-12-07 01:40:23,231 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-12-07 01:40:23,233 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-12-07 01:40:23,234 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 01:40:23,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:40:23 BoogieIcfgContainer [2021-12-07 01:40:23,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 01:40:23,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:40:23,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:40:23,244 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:40:23,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:39:07" (3/4) ... [2021-12-07 01:40:23,247 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-07 01:40:23,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-07 01:40:23,251 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-07 01:40:23,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-07 01:40:23,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-07 01:40:23,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-07 01:40:23,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-07 01:40:23,278 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 01:40:23,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:40:23,279 INFO L158 Benchmark]: Toolchain (without parser) took 75957.04ms. Allocated memory was 123.7MB in the beginning and 151.0MB in the end (delta: 27.3MB). Free memory was 81.9MB in the beginning and 72.2MB in the end (delta: 9.7MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2021-12-07 01:40:23,279 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 123.7MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:40:23,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.95ms. Allocated memory is still 123.7MB. Free memory was 81.7MB in the beginning and 71.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 01:40:23,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.99ms. Allocated memory is still 123.7MB. Free memory was 71.3MB in the beginning and 69.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:40:23,280 INFO L158 Benchmark]: Boogie Preprocessor took 16.29ms. Allocated memory is still 123.7MB. Free memory was 69.5MB in the beginning and 68.6MB in the end (delta: 907.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:40:23,281 INFO L158 Benchmark]: RCFGBuilder took 213.05ms. Allocated memory is still 123.7MB. Free memory was 68.4MB in the beginning and 95.1MB in the end (delta: -26.7MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-12-07 01:40:23,281 INFO L158 Benchmark]: TraceAbstraction took 75491.95ms. Allocated memory was 123.7MB in the beginning and 151.0MB in the end (delta: 27.3MB). Free memory was 94.5MB in the beginning and 75.4MB in the end (delta: 19.2MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2021-12-07 01:40:23,281 INFO L158 Benchmark]: Witness Printer took 34.18ms. Allocated memory is still 151.0MB. Free memory was 75.4MB in the beginning and 72.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-07 01:40:23,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 123.7MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.95ms. Allocated memory is still 123.7MB. Free memory was 81.7MB in the beginning and 71.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.99ms. Allocated memory is still 123.7MB. Free memory was 71.3MB in the beginning and 69.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.29ms. Allocated memory is still 123.7MB. Free memory was 69.5MB in the beginning and 68.6MB in the end (delta: 907.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 213.05ms. Allocated memory is still 123.7MB. Free memory was 68.4MB in the beginning and 95.1MB in the end (delta: -26.7MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * TraceAbstraction took 75491.95ms. Allocated memory was 123.7MB in the beginning and 151.0MB in the end (delta: 27.3MB). Free memory was 94.5MB in the beginning and 75.4MB in the end (delta: 19.2MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. * Witness Printer took 34.18ms. Allocated memory is still 151.0MB. Free memory was 75.4MB in the beginning and 72.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 75.4s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 24.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 156 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 503 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 380 mSDsCounter, 136 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 571 IncrementalHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 136 mSolverCounterUnsat, 123 mSDtfsCounter, 571 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 176 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 41.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=3, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 19 PreInvPairs, 26 NumberOfFragments, 141 HoareAnnotationTreeSize, 19 FomulaSimplifications, 186 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 770 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 49.0s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 1323 SizeOfPredicates, 21 NumberOfNonLiveVariables, 355 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 107/124 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((0 <= x && 1 <= y) && x <= 50) && q + a * b * p == y * x RESULT: Ultimate proved your program to be correct! [2021-12-07 01:40:23,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6f770-7043-4d77-aa9a-e041c52f9302/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