./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU --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 623f8e570c67201db9fc7be447d74d083955ca752401303f9fce588b7571c3af --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:52:47,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:52:47,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:52:47,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:52:47,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:52:47,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:52:47,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:52:47,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:52:47,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:52:47,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:52:47,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:52:47,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:52:47,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:52:47,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:52:47,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:52:47,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:52:47,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:52:47,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:52:47,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:52:47,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:52:47,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:52:47,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:52:47,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:52:47,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:52:47,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:52:47,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:52:47,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:52:47,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:52:47,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:52:47,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:52:47,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:52:47,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:52:47,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:52:47,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:52:47,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:52:47,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:52:47,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:52:47,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:52:47,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:52:47,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:52:47,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:52:47,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:52:47,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:52:47,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:52:47,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:52:47,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:52:47,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:52:47,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:52:47,808 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:52:47,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:52:47,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:52:47,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:52:47,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:52:47,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:52:47,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:52:47,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:52:47,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:52:47,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:52:47,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:52:47,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:52:47,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:52:47,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:52:47,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:52:47,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:52:47,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:52:47,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:52:47,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:52:47,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:52:47,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:52:47,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:52:47,815 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:52:47,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:52:47,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:52:47,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:52:47,818 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_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 623f8e570c67201db9fc7be447d74d083955ca752401303f9fce588b7571c3af [2021-11-02 22:52:48,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:52:48,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:52:48,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:52:48,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:52:48,309 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:52:48,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2021-11-02 22:52:48,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/data/772ea38b4/572d9b0a3d244114a6448f5c9b0b687d/FLAGe00a6ec29 [2021-11-02 22:52:49,070 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:52:49,070 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2021-11-02 22:52:49,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/data/772ea38b4/572d9b0a3d244114a6448f5c9b0b687d/FLAGe00a6ec29 [2021-11-02 22:52:49,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/data/772ea38b4/572d9b0a3d244114a6448f5c9b0b687d [2021-11-02 22:52:49,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:52:49,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:52:49,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:52:49,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:52:49,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:52:49,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471c35e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49, skipping insertion in model container [2021-11-02 22:52:49,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:52:49,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:52:49,681 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c[520,533] [2021-11-02 22:52:49,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:52:49,717 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:52:49,735 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c[520,533] [2021-11-02 22:52:49,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:52:49,782 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:52:49,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49 WrapperNode [2021-11-02 22:52:49,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:52:49,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:52:49,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:52:49,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:52:49,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:52:49,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:52:49,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:52:49,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:52:49,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:52:49,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:52:49,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:52:49,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:52:49,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (1/1) ... [2021-11-02 22:52:49,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:52:49,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:52:49,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:52:49,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:52:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:52:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:52:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:52:50,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:52:50,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:52:50,361 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-11-02 22:52:50,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:52:50 BoogieIcfgContainer [2021-11-02 22:52:50,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:52:50,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:52:50,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:52:50,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:52:50,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:52:49" (1/3) ... [2021-11-02 22:52:50,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98e4359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:52:50, skipping insertion in model container [2021-11-02 22:52:50,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:52:49" (2/3) ... [2021-11-02 22:52:50,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98e4359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:52:50, skipping insertion in model container [2021-11-02 22:52:50,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:52:50" (3/3) ... [2021-11-02 22:52:50,374 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound5.c [2021-11-02 22:52:50,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:52:50,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 22:52:50,483 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:52:50,492 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:52:50,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 22:52:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:52:50,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:50,519 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:50,520 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:52:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:50,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-11-02 22:52:50,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:50,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636573234] [2021-11-02 22:52:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:50,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:52:50,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:50,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636573234] [2021-11-02 22:52:50,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636573234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:50,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:50,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:52:50,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966926458] [2021-11-02 22:52:50,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:52:50,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:52:50,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:52:50,749 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:50,771 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-11-02 22:52:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:52:50,773 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-02 22:52:50,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:50,784 INFO L225 Difference]: With dead ends: 63 [2021-11-02 22:52:50,784 INFO L226 Difference]: Without dead ends: 29 [2021-11-02 22:52:50,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:52:50,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-02 22:52:50,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-02 22:52:50,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-11-02 22:52:50,826 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-11-02 22:52:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:50,827 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-11-02 22:52:50,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-11-02 22:52:50,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:52:50,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:50,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:50,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:52:50,829 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:52:50,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:50,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-11-02 22:52:50,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:50,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314589521] [2021-11-02 22:52:50,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:50,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:52:50,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:50,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314589521] [2021-11-02 22:52:50,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314589521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:50,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:50,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:52:50,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372609749] [2021-11-02 22:52:50,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:52:50,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:50,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:52:50,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:52:50,951 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:51,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:51,122 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-11-02 22:52:51,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:52:51,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-02 22:52:51,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:51,125 INFO L225 Difference]: With dead ends: 54 [2021-11-02 22:52:51,125 INFO L226 Difference]: Without dead ends: 50 [2021-11-02 22:52:51,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:52:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-02 22:52:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2021-11-02 22:52:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.28125) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-11-02 22:52:51,147 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2021-11-02 22:52:51,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:51,147 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-11-02 22:52:51,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:51,148 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-11-02 22:52:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:52:51,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:51,150 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:51,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:52:51,151 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:52:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-11-02 22:52:51,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:51,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932114847] [2021-11-02 22:52:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:51,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:51,210 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:52:51,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055580321] [2021-11-02 22:52:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:51,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:51,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:52:51,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:52:51,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:52:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:51,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:52:51,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:52:51,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:51,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932114847] [2021-11-02 22:52:51,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:52:51,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055580321] [2021-11-02 22:52:51,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055580321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:51,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:51,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:52:51,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046472809] [2021-11-02 22:52:51,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:52:51,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:52:51,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:52:51,480 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:51,608 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-11-02 22:52:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:52:51,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-02 22:52:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:51,616 INFO L225 Difference]: With dead ends: 50 [2021-11-02 22:52:51,616 INFO L226 Difference]: Without dead ends: 46 [2021-11-02 22:52:51,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:52:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-02 22:52:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-11-02 22:52:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-02 22:52:51,626 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2021-11-02 22:52:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:51,626 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-02 22:52:51,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-02 22:52:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 22:52:51,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:51,627 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:51,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:51,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:51,849 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:52:51,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-11-02 22:52:51,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:51,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337751621] [2021-11-02 22:52:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:51,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:51,889 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:52:51,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386540213] [2021-11-02 22:52:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:51,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:51,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:52:51,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:52:51,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:52:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:51,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:52:51,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:52:52,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:52,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337751621] [2021-11-02 22:52:52,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:52:52,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386540213] [2021-11-02 22:52:52,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386540213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:52,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:52,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:52:52,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610780518] [2021-11-02 22:52:52,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:52:52,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:52,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:52:52,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:52:52,104 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:52,180 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-11-02 22:52:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:52:52,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-02 22:52:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:52,182 INFO L225 Difference]: With dead ends: 47 [2021-11-02 22:52:52,182 INFO L226 Difference]: Without dead ends: 37 [2021-11-02 22:52:52,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:52:52,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-02 22:52:52,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-11-02 22:52:52,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:52,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-11-02 22:52:52,192 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2021-11-02 22:52:52,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:52,192 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-11-02 22:52:52,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:52,193 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-11-02 22:52:52,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 22:52:52,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:52,194 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:52,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:52,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:52,421 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:52:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:52,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2021-11-02 22:52:52,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:52,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554123305] [2021-11-02 22:52:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:52,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:52,434 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:52:52,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570648506] [2021-11-02 22:52:52,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:52,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:52,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:52:52,436 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:52:52,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:52:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:52,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:52:52,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:52:52,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:52,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554123305] [2021-11-02 22:52:52,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:52:52,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570648506] [2021-11-02 22:52:52,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570648506] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:52:52,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:52:52,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:52:52,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117640393] [2021-11-02 22:52:52,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:52:52,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:52,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:52:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:52:52,737 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:52,893 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-11-02 22:52:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:52:52,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-02 22:52:52,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:52,899 INFO L225 Difference]: With dead ends: 61 [2021-11-02 22:52:52,904 INFO L226 Difference]: Without dead ends: 57 [2021-11-02 22:52:52,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:52:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-02 22:52:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-11-02 22:52:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-11-02 22:52:52,927 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2021-11-02 22:52:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:52,927 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-11-02 22:52:52,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-11-02 22:52:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 22:52:52,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:52,929 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:52,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:53,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:53,130 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:52:53,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:53,131 INFO L85 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2021-11-02 22:52:53,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:53,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446933286] [2021-11-02 22:52:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:53,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:53,150 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:52:53,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183772499] [2021-11-02 22:52:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:53,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:53,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:52:53,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:52:53,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:52:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:53,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:52:53,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:52:53,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:53,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446933286] [2021-11-02 22:52:53,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:52:53,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183772499] [2021-11-02 22:52:53,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183772499] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:52:53,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:52:53,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:52:53,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119530102] [2021-11-02 22:52:53,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:52:53,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:52:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:52:53,454 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:53,583 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-11-02 22:52:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:52:53,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-02 22:52:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:53,585 INFO L225 Difference]: With dead ends: 57 [2021-11-02 22:52:53,585 INFO L226 Difference]: Without dead ends: 53 [2021-11-02 22:52:53,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:52:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-02 22:52:53,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2021-11-02 22:52:53,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-11-02 22:52:53,594 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 16 [2021-11-02 22:52:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:53,599 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-11-02 22:52:53,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-11-02 22:52:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 22:52:53,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:53,601 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:53,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:53,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-02 22:52:53,817 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:52:53,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-11-02 22:52:53,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:53,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434517408] [2021-11-02 22:52:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:53,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:53,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:52:53,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479377449] [2021-11-02 22:52:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:53,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:53,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:52:53,860 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:52:53,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:52:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:53,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:52:53,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:52:54,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:54,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434517408] [2021-11-02 22:52:54,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:52:54,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479377449] [2021-11-02 22:52:54,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479377449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:52:54,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:52:54,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:52:54,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53298798] [2021-11-02 22:52:54,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:52:54,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:54,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:52:54,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:52:54,202 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:54,290 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-11-02 22:52:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:52:54,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-02 22:52:54,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:54,294 INFO L225 Difference]: With dead ends: 54 [2021-11-02 22:52:54,294 INFO L226 Difference]: Without dead ends: 44 [2021-11-02 22:52:54,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:52:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-02 22:52:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-11-02 22:52:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.162162162162162) internal successors, (43), 42 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-11-02 22:52:54,313 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 18 [2021-11-02 22:52:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:54,314 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-11-02 22:52:54,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-11-02 22:52:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-02 22:52:54,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:54,316 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:54,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:54,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-02 22:52:54,537 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:52:54,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash -435278385, now seen corresponding path program 2 times [2021-11-02 22:52:54,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:54,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343789780] [2021-11-02 22:52:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:54,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:54,552 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:52:54,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722641126] [2021-11-02 22:52:54,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:52:54,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:54,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:52:54,564 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:52:54,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:52:54,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:52:54,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:52:54,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:52:54,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:52:54,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:54,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343789780] [2021-11-02 22:52:54,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:52:54,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722641126] [2021-11-02 22:52:54,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722641126] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:52:54,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:52:54,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 22:52:54,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780968296] [2021-11-02 22:52:54,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:52:54,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:54,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:52:54,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:52:54,864 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:54,992 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-11-02 22:52:54,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:52:54,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-02 22:52:54,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:54,994 INFO L225 Difference]: With dead ends: 68 [2021-11-02 22:52:54,995 INFO L226 Difference]: Without dead ends: 64 [2021-11-02 22:52:54,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:52:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-02 22:52:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-11-02 22:52:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-11-02 22:52:55,004 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2021-11-02 22:52:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:55,005 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-11-02 22:52:55,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-11-02 22:52:55,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 22:52:55,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:55,013 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:55,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:55,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:55,214 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:52:55,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:55,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1690544526, now seen corresponding path program 2 times [2021-11-02 22:52:55,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:55,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586853126] [2021-11-02 22:52:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:55,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:55,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:52:55,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944256057] [2021-11-02 22:52:55,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:52:55,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:55,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:52:55,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:52:55,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:52:55,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:52:55,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:52:55,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 22:52:55,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:52:55,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:55,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586853126] [2021-11-02 22:52:55,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:52:55,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944256057] [2021-11-02 22:52:55,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944256057] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:52:55,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:52:55,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 22:52:55,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013591076] [2021-11-02 22:52:55,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:52:55,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:55,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:52:55,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:52:55,671 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:55,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:55,821 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-11-02 22:52:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:52:55,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-02 22:52:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:55,823 INFO L225 Difference]: With dead ends: 64 [2021-11-02 22:52:55,823 INFO L226 Difference]: Without dead ends: 60 [2021-11-02 22:52:55,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:52:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-02 22:52:55,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-11-02 22:52:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:55,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-11-02 22:52:55,832 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2021-11-02 22:52:55,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:55,832 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-11-02 22:52:55,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:52:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-11-02 22:52:55,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 22:52:55,833 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:55,834 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:55,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:56,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:56,050 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:52:56,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:56,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2021-11-02 22:52:56,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:52:56,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150670647] [2021-11-02 22:52:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:56,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:52:56,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:52:56,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540046303] [2021-11-02 22:52:56,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:52:56,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:52:56,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:52:56,062 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:52:56,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:52:56,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:52:56,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:52:56,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:52:56,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:52:56,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:52:56,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150670647] [2021-11-02 22:52:56,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:52:56,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540046303] [2021-11-02 22:52:56,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540046303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:56,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:56,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:52:56,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664805491] [2021-11-02 22:52:56,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:52:56,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:52:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:52:56,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:52:56,518 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:14,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:14,591 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-11-02 22:53:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:53:14,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-02 22:53:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:14,593 INFO L225 Difference]: With dead ends: 54 [2021-11-02 22:53:14,593 INFO L226 Difference]: Without dead ends: 40 [2021-11-02 22:53:14,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:53:14,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-02 22:53:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-02 22:53:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-11-02 22:53:14,601 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 25 [2021-11-02 22:53:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:14,602 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-11-02 22:53:14,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-11-02 22:53:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 22:53:14,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:14,603 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:14,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:14,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:53:14,804 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:53:14,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:14,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1559508070, now seen corresponding path program 3 times [2021-11-02 22:53:14,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:14,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359071924] [2021-11-02 22:53:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:14,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:14,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:53:14,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124796511] [2021-11-02 22:53:14,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:53:14,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:14,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:14,827 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:14,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:53:15,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-02 22:53:15,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:15,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:53:15,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:53:15,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:15,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359071924] [2021-11-02 22:53:15,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:53:15,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124796511] [2021-11-02 22:53:15,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124796511] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:15,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:53:15,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:53:15,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020602965] [2021-11-02 22:53:15,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:53:15,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:53:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:53:15,214 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:15,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:15,268 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-11-02 22:53:15,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:53:15,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-02 22:53:15,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:15,270 INFO L225 Difference]: With dead ends: 40 [2021-11-02 22:53:15,270 INFO L226 Difference]: Without dead ends: 34 [2021-11-02 22:53:15,271 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:53:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-02 22:53:15,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-11-02 22:53:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-11-02 22:53:15,282 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2021-11-02 22:53:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:15,283 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-11-02 22:53:15,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-11-02 22:53:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-02 22:53:15,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:15,289 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:15,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:15,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:15,495 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:53:15,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:15,495 INFO L85 PathProgramCache]: Analyzing trace with hash 256486781, now seen corresponding path program 3 times [2021-11-02 22:53:15,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:15,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297287722] [2021-11-02 22:53:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:15,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:15,508 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:53:15,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797518602] [2021-11-02 22:53:15,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:53:15,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:15,510 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:15,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:53:15,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-02 22:53:15,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:15,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:53:15,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 22:53:16,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:16,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297287722] [2021-11-02 22:53:16,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:53:16,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797518602] [2021-11-02 22:53:16,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797518602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:16,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:16,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:53:16,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385501635] [2021-11-02 22:53:16,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:53:16,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:53:16,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:53:16,073 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:16,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:16,609 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-11-02 22:53:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:53:16,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-02 22:53:16,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:16,614 INFO L225 Difference]: With dead ends: 31 [2021-11-02 22:53:16,614 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 22:53:16,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:53:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 22:53:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 22:53:16,615 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) [2021-11-02 22:53:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 22:53:16,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-11-02 22:53:16,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:16,616 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 22:53:16,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:16,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 22:53:16,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 22:53:16,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:53:16,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:53:16,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:53:16,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:53:16,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:53:16,622 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:53:16,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:16,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 22:53:16,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 22:53:16,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:53:16,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:53:16,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:53:16,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:53:16,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:53:16,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:53:16,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:53:16,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:53:19,566 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:53:19,566 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:53:19,567 INFO L860 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-11-02 22:53:19,567 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-02 22:53:19,567 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:53:19,567 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-02 22:53:19,567 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-02 22:53:19,567 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:53:19,567 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:53:19,567 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (exists ((ULTIMATE.start_main_~t~0 Int)) (and (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (not .cse0) (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-02 22:53:19,568 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:53:19,568 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-11-02 22:53:19,569 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (exists ((ULTIMATE.start_main_~t~0 Int)) (and (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (not .cse0) (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-02 22:53:19,569 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:53:19,569 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (and (exists ((ULTIMATE.start_main_~t~0 Int)) (and (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (not .cse0) (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-02 22:53:19,569 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:53:19,569 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~s~0 4)) (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 1) .cse0) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (let ((.cse1 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse1) (* .cse1 .cse1) 1)))))) [2021-11-02 22:53:19,569 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-02 22:53:19,569 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:53:19,569 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (let ((.cse0 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse0) (* .cse0 .cse0) 1)))) (and (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (= ULTIMATE.start_main_~t~0 3) .cse1) (and (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 1) .cse1))) [2021-11-02 22:53:19,569 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:53:19,570 INFO L860 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-11-02 22:53:19,570 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:53:19,570 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:53:19,570 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:53:19,570 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:53:19,570 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:53:19,570 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-11-02 22:53:19,570 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:53:19,570 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:53:19,570 INFO L853 garLoopResultBuilder]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (.cse1 (= ULTIMATE.start_main_~s~0 (let ((.cse2 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse2) (* .cse2 .cse2) 1))))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1) (and (= ULTIMATE.start_main_~t~0 1) .cse0 .cse1))) [2021-11-02 22:53:19,571 INFO L857 garLoopResultBuilder]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2021-11-02 22:53:19,571 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:53:19,574 INFO L731 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1] [2021-11-02 22:53:19,576 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:53:19,588 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,600 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,600 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,601 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,601 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,601 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,619 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,619 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,620 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,623 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,623 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,624 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,624 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,625 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,625 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,625 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,627 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,628 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,628 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,628 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,629 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,629 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,637 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,638 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:53:19 BoogieIcfgContainer [2021-11-02 22:53:19,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:53:19,640 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:53:19,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:53:19,640 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:53:19,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:52:50" (3/4) ... [2021-11-02 22:53:19,648 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 22:53:19,662 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-02 22:53:19,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 22:53:19,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:53:19,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:53:19,691 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) [2021-11-02 22:53:19,691 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) [2021-11-02 22:53:19,692 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) [2021-11-02 22:53:19,706 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:53:19,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:53:19,708 INFO L168 Benchmark]: Toolchain (without parser) took 30297.52 ms. Allocated memory was 127.9 MB in the beginning and 169.9 MB in the end (delta: 41.9 MB). Free memory was 88.2 MB in the beginning and 112.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-11-02 22:53:19,708 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 127.9 MB. Free memory is still 104.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:53:19,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.56 ms. Allocated memory is still 127.9 MB. Free memory was 88.0 MB in the beginning and 102.5 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:53:19,709 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.37 ms. Allocated memory is still 127.9 MB. Free memory was 102.5 MB in the beginning and 100.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:53:19,710 INFO L168 Benchmark]: Boogie Preprocessor took 40.31 ms. Allocated memory is still 127.9 MB. Free memory was 100.9 MB in the beginning and 99.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:53:19,710 INFO L168 Benchmark]: RCFGBuilder took 479.18 ms. Allocated memory is still 127.9 MB. Free memory was 99.5 MB in the beginning and 89.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:53:19,711 INFO L168 Benchmark]: TraceAbstraction took 29274.26 ms. Allocated memory was 127.9 MB in the beginning and 169.9 MB in the end (delta: 41.9 MB). Free memory was 89.0 MB in the beginning and 115.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-11-02 22:53:19,711 INFO L168 Benchmark]: Witness Printer took 66.83 ms. Allocated memory is still 169.9 MB. Free memory was 115.8 MB in the beginning and 112.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:53:19,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 127.9 MB. Free memory is still 104.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 370.56 ms. Allocated memory is still 127.9 MB. Free memory was 88.0 MB in the beginning and 102.5 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.37 ms. Allocated memory is still 127.9 MB. Free memory was 102.5 MB in the beginning and 100.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.31 ms. Allocated memory is still 127.9 MB. Free memory was 100.9 MB in the beginning and 99.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 479.18 ms. Allocated memory is still 127.9 MB. Free memory was 99.5 MB in the beginning and 89.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29274.26 ms. Allocated memory was 127.9 MB in the beginning and 169.9 MB in the end (delta: 41.9 MB). Free memory was 89.0 MB in the beginning and 115.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Witness Printer took 66.83 ms. Allocated memory is still 169.9 MB. Free memory was 115.8 MB in the beginning and 112.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 29.0s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 19.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 218 SDtfs, 189 SDslu, 405 SDs, 0 SdLazy, 565 SolverSat, 111 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 18.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=9, InterpolantAutomatonStates: 69, 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, 12 MinimizatonAttempts, 59 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 31 NumberOfFragments, 363 HoareAnnotationTreeSize, 8 FomulaSimplifications, 2631 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 214 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 209 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 197 ConstructedInterpolants, 1 QuantifiedInterpolants, 1059 SizeOfPredicates, 45 NumberOfNonLiveVariables, 800 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 78/117 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 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant [2021-11-02 22:53:19,726 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,728 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,728 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,728 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,728 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,729 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((1 == cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) || ((t == 1 && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) - InvariantResult [Line: 36]: Loop Invariant [2021-11-02 22:53:19,734 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,734 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,734 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,735 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,735 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,736 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,737 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,738 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,738 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,738 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((t == 3 && a == 1) && !(0 == cond)) && s == 4) || (((a == 0 && t == 1) && s == 1) && !(0 == cond))) || ((1 == cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 == cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) || ((s == t + 1 && t == 3) && !(0 == cond))) || ((t == 1 && s == 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant [2021-11-02 22:53:19,742 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,742 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,742 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,742 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,743 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,743 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,746 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,746 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,746 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-11-02 22:53:19,747 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-02 22:53:19,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc33a686-2e62-4f51-8b88-fbf88c667737/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE