./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.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_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/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_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/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_f1efc967-11a4-416f-a94c-c41b1ef27d49/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 d6c389695f28ab23288d12eab23e55426fe9ec0f0b8fe9723cca18e00c3db8b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:22:47,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:22:47,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:22:47,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:22:47,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:22:47,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:22:47,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:22:47,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:22:47,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:22:47,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:22:47,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:22:47,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:22:47,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:22:47,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:22:47,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:22:47,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:22:47,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:22:47,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:22:47,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:22:47,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:22:47,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:22:47,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:22:47,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:22:47,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:22:47,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:22:47,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:22:47,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:22:47,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:22:47,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:22:47,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:22:47,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:22:47,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:22:47,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:22:47,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:22:47,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:22:47,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:22:47,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:22:47,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:22:47,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:22:47,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:22:47,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:22:47,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:22:47,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:22:47,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:22:47,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:22:47,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:22:47,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:22:47,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:22:47,876 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:22:47,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:22:47,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:22:47,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:22:47,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:22:47,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:22:47,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:22:47,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:22:47,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:22:47,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:22:47,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:22:47,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:22:47,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:22:47,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:22:47,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:22:47,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:22:47,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:22:47,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:22:47,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:22:47,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:22:47,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:22:47,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:22:47,883 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:22:47,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:22:47,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:22:47,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:22:47,885 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_f1efc967-11a4-416f-a94c-c41b1ef27d49/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c389695f28ab23288d12eab23e55426fe9ec0f0b8fe9723cca18e00c3db8b7 [2021-11-02 22:22:48,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:22:48,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:22:48,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:22:48,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:22:48,262 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:22:48,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2021-11-02 22:22:48,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/data/e4bd96880/cbfb986301d7423ea0fad0225d9b34c4/FLAG9696d0145 [2021-11-02 22:22:48,883 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:22:48,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2021-11-02 22:22:48,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/data/e4bd96880/cbfb986301d7423ea0fad0225d9b34c4/FLAG9696d0145 [2021-11-02 22:22:49,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/data/e4bd96880/cbfb986301d7423ea0fad0225d9b34c4 [2021-11-02 22:22:49,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:22:49,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:22:49,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:22:49,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:22:49,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:22:49,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4e1ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49, skipping insertion in model container [2021-11-02 22:22:49,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:22:49,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:22:49,451 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_f1efc967-11a4-416f-a94c-c41b1ef27d49/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2021-11-02 22:22:49,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:22:49,477 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:22:49,490 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_f1efc967-11a4-416f-a94c-c41b1ef27d49/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2021-11-02 22:22:49,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:22:49,517 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:22:49,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49 WrapperNode [2021-11-02 22:22:49,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:22:49,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:22:49,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:22:49,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:22:49,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:22:49,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:22:49,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:22:49,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:22:49,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:22:49,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:22:49,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:22:49,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:22:49,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (1/1) ... [2021-11-02 22:22:49,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:22:49,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:49,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:22:49,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:22:49,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:22:49,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:22:49,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:22:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:22:49,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:22:49,858 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-02 22:22:49,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:22:49 BoogieIcfgContainer [2021-11-02 22:22:49,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:22:49,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:22:49,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:22:49,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:22:49,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:22:49" (1/3) ... [2021-11-02 22:22:49,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5185ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:22:49, skipping insertion in model container [2021-11-02 22:22:49,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:49" (2/3) ... [2021-11-02 22:22:49,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5185ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:22:49, skipping insertion in model container [2021-11-02 22:22:49,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:22:49" (3/3) ... [2021-11-02 22:22:49,869 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound2.c [2021-11-02 22:22:49,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:22:49,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 22:22:49,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:22:49,929 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 22:22:49,929 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 22:22:49,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 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 22:22:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 22:22:49,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:49,961 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:22:49,962 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:22:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-11-02 22:22:49,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:49,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107428817] [2021-11-02 22:22:49,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:49,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:50,192 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 22:22:50,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:50,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107428817] [2021-11-02 22:22:50,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107428817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:50,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:50,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:22:50,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224369062] [2021-11-02 22:22:50,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:22:50,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:22:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:22:50,239 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 22:22:50,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:50,256 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-11-02 22:22:50,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:22:50,257 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-02 22:22:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:50,266 INFO L225 Difference]: With dead ends: 62 [2021-11-02 22:22:50,266 INFO L226 Difference]: Without dead ends: 28 [2021-11-02 22:22:50,269 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 22:22:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-02 22:22:50,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-02 22:22:50,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 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 22:22:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-02 22:22:50,304 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-11-02 22:22:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:50,305 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-02 22:22:50,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 22:22:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-02 22:22:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 22:22:50,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:50,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:22:50,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:22:50,307 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 22:22:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:50,308 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-02 22:22:50,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:50,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119981036] [2021-11-02 22:22:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:50,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:50,431 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 22:22:50,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:50,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119981036] [2021-11-02 22:22:50,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119981036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:50,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:50,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:22:50,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477585564] [2021-11-02 22:22:50,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:22:50,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:22:50,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:22:50,436 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 22:22:50,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:50,550 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-11-02 22:22:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:22:50,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-11-02 22:22:50,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:50,552 INFO L225 Difference]: With dead ends: 31 [2021-11-02 22:22:50,552 INFO L226 Difference]: Without dead ends: 27 [2021-11-02 22:22:50,553 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 22:22:50,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-02 22:22:50,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-11-02 22:22:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 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 22:22:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-02 22:22:50,558 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 6 [2021-11-02 22:22:50,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:50,558 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-02 22:22:50,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 22:22:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-02 22:22:50,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:22:50,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:50,559 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:50,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:22:50,560 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 22:22:50,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:50,561 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-11-02 22:22:50,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:50,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828693975] [2021-11-02 22:22:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:50,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:50,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:22:50,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431582113] [2021-11-02 22:22:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:50,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:50,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:50,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:50,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:22:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:50,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:22:50,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:50,783 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 22:22:50,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:50,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828693975] [2021-11-02 22:22:50,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:22:50,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431582113] [2021-11-02 22:22:50,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431582113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:50,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:50,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:22:50,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618170211] [2021-11-02 22:22:50,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:22:50,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:50,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:22:50,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:22:50,793 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 22:22:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:50,871 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-11-02 22:22:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:22:50,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-11-02 22:22:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:50,875 INFO L225 Difference]: With dead ends: 46 [2021-11-02 22:22:50,875 INFO L226 Difference]: Without dead ends: 42 [2021-11-02 22:22:50,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 22:22:50,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-02 22:22:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2021-11-02 22:22:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.25) internal successors, (40), 35 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 22:22:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-11-02 22:22:50,894 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2021-11-02 22:22:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:50,895 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-11-02 22:22:50,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 22:22:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-11-02 22:22:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:22:50,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:50,897 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:50,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:51,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:51,113 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 22:22:51,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:51,114 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-11-02 22:22:51,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:51,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898204169] [2021-11-02 22:22:51,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:51,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:51,128 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:22:51,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73709512] [2021-11-02 22:22:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:51,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:51,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:51,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:51,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:22:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:51,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:22:51,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:51,326 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 22:22:51,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:51,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898204169] [2021-11-02 22:22:51,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:22:51,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73709512] [2021-11-02 22:22:51,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73709512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:51,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:51,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:22:51,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900247590] [2021-11-02 22:22:51,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:22:51,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:51,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:22:51,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:22:51,330 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:51,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:51,391 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-11-02 22:22:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:22:51,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-02 22:22:51,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:51,393 INFO L225 Difference]: With dead ends: 46 [2021-11-02 22:22:51,393 INFO L226 Difference]: Without dead ends: 35 [2021-11-02 22:22:51,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:22:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-02 22:22:51,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-11-02 22:22:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-11-02 22:22:51,400 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 10 [2021-11-02 22:22:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:51,400 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-11-02 22:22:51,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-11-02 22:22:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 22:22:51,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:51,402 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:51,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:51,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:51,625 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:22:51,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:51,626 INFO L85 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2021-11-02 22:22:51,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:51,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839424677] [2021-11-02 22:22:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:51,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:51,640 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:22:51,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057628624] [2021-11-02 22:22:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:51,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:51,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:51,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:51,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:22:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:51,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:22:51,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:51,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:51,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839424677] [2021-11-02 22:22:51,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:22:51,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057628624] [2021-11-02 22:22:51,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057628624] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:51,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:22:51,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:22:51,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869893668] [2021-11-02 22:22:51,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:22:51,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:51,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:22:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:22:51,928 INFO L87 Difference]: Start difference. First operand 32 states and 33 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 22:22:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:52,041 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2021-11-02 22:22:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:22:52,045 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 22:22:52,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:52,046 INFO L225 Difference]: With dead ends: 55 [2021-11-02 22:22:52,046 INFO L226 Difference]: Without dead ends: 51 [2021-11-02 22:22:52,046 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 22:22:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-02 22:22:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2021-11-02 22:22:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.2) internal successors, (48), 43 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 22:22:52,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-11-02 22:22:52,066 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 16 [2021-11-02 22:22:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:52,067 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-11-02 22:22:52,067 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 22:22:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-11-02 22:22:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 22:22:52,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:52,068 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:52,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:52,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:52,281 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:22:52,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:52,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2021-11-02 22:22:52,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:52,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888797375] [2021-11-02 22:22:52,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:52,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:52,303 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:22:52,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131068682] [2021-11-02 22:22:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:52,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:52,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:52,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:22:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:52,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:22:52,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:52,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:52,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888797375] [2021-11-02 22:22:52,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:22:52,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131068682] [2021-11-02 22:22:52,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131068682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:52,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:22:52,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:22:52,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364475630] [2021-11-02 22:22:52,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:22:52,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:52,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:22:52,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:22:52,529 INFO L87 Difference]: Start difference. First operand 44 states and 48 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 22:22:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:52,598 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2021-11-02 22:22:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:22:52,599 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 22:22:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:52,599 INFO L225 Difference]: With dead ends: 53 [2021-11-02 22:22:52,599 INFO L226 Difference]: Without dead ends: 43 [2021-11-02 22:22:52,600 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 22:22:52,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-02 22:22:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-11-02 22:22:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 39 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 22:22:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-11-02 22:22:52,641 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 18 [2021-11-02 22:22:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:52,642 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-11-02 22:22:52,642 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 22:22:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-11-02 22:22:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 22:22:52,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:52,644 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-02 22:22:52,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:52,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:52,844 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:22:52,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2093393681, now seen corresponding path program 2 times [2021-11-02 22:22:52,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:52,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125412113] [2021-11-02 22:22:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:52,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:52,856 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:22:52,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855055659] [2021-11-02 22:22:52,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:22:52,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:52,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:52,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:52,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:22:52,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:22:52,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:22:52,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:22:52,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:53,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:53,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:53,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125412113] [2021-11-02 22:22:53,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:22:53,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855055659] [2021-11-02 22:22:53,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855055659] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:53,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:22:53,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:22:53,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289353107] [2021-11-02 22:22:53,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:22:53,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:22:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:22:53,070 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 22:22:53,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:53,099 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-11-02 22:22:53,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:22:53,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2021-11-02 22:22:53,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:53,102 INFO L225 Difference]: With dead ends: 52 [2021-11-02 22:22:53,102 INFO L226 Difference]: Without dead ends: 30 [2021-11-02 22:22:53,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:22:53,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-02 22:22:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-02 22:22:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 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 22:22:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 29 transitions. [2021-11-02 22:22:53,122 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 29 transitions. Word has length 24 [2021-11-02 22:22:53,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:53,123 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 29 transitions. [2021-11-02 22:22:53,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 22:22:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 29 transitions. [2021-11-02 22:22:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 22:22:53,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:53,126 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:53,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:53,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-02 22:22:53,345 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:22:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:53,345 INFO L85 PathProgramCache]: Analyzing trace with hash 445082416, now seen corresponding path program 1 times [2021-11-02 22:22:53,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:53,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550243294] [2021-11-02 22:22:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:53,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:53,358 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:22:53,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141024235] [2021-11-02 22:22:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:53,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:53,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:53,360 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:53,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:22:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:53,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 22:22:53,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:53,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:53,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550243294] [2021-11-02 22:22:53,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:22:53,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141024235] [2021-11-02 22:22:53,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141024235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:53,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:22:53,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 22:22:53,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081999151] [2021-11-02 22:22:53,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:22:53,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:22:53,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:22:53,737 INFO L87 Difference]: Start difference. First operand 30 states and 29 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 22:22:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:53,811 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2021-11-02 22:22:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:22:53,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 22:22:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:53,812 INFO L225 Difference]: With dead ends: 30 [2021-11-02 22:22:53,813 INFO L226 Difference]: Without dead ends: 28 [2021-11-02 22:22:53,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 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 22:22:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-02 22:22:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-02 22:22:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0) internal successors, (27), 27 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-11-02 22:22:53,818 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 25 [2021-11-02 22:22:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:53,818 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-11-02 22:22:53,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 22:22:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-11-02 22:22:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 22:22:53,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:53,819 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:53,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:54,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:54,045 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:22:54,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1772370605, now seen corresponding path program 1 times [2021-11-02 22:22:54,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:54,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090185405] [2021-11-02 22:22:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:54,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:54,057 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:22:54,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716693215] [2021-11-02 22:22:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:54,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:54,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:54,059 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:54,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:22:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:54,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 22:22:54,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:54,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:54,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090185405] [2021-11-02 22:22:54,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:22:54,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716693215] [2021-11-02 22:22:54,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716693215] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:54,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:22:54,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 22:22:54,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663601254] [2021-11-02 22:22:54,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:22:54,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:22:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:22:54,495 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:54,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:54,571 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-11-02 22:22:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:22:54,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-02 22:22:54,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:54,572 INFO L225 Difference]: With dead ends: 28 [2021-11-02 22:22:54,572 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 22:22:54,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 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 22:22:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 22:22:54,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 22:22:54,573 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 22:22:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 22:22:54,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-11-02 22:22:54,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:54,573 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 22:22:54,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 22:22:54,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 22:22:54,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:22:54,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:22:54,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:22:54,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:22:54,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:22:54,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:22:54,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:54,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:54,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 22:22:54,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:22:54,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:22:54,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:22:54,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:22:54,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:22:54,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:22:54,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:22:54,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:22:55,208 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:22:55,208 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:22:55,208 INFO L860 garLoopResultBuilder]: At program point L48(lines 21 49) the Hoare annotation is: true [2021-11-02 22:22:55,209 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-02 22:22:55,209 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:22:55,209 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-02 22:22:55,209 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-02 22:22:55,209 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:22:55,209 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:22:55,209 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (<= 2 ~counter~0) .cse0 (= ULTIMATE.start_main_~a~0 1) .cse1 (= ULTIMATE.start_main_~s~0 4)) (and .cse0 (= ULTIMATE.start_main_~t~0 1) (<= 1 ~counter~0) .cse1 (= ULTIMATE.start_main_~s~0 1)))) [2021-11-02 22:22:55,210 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:22:55,210 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (<= 2 ~counter~0) .cse0 (= ULTIMATE.start_main_~a~0 1) .cse1 (= ULTIMATE.start_main_~s~0 4)) (and .cse0 (= ULTIMATE.start_main_~t~0 1) (<= 1 ~counter~0) .cse1 (= ULTIMATE.start_main_~s~0 1)))) [2021-11-02 22:22:55,210 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:22:55,210 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (<= 2 ~counter~0) .cse0 (= ULTIMATE.start_main_~a~0 1) .cse1 (= ULTIMATE.start_main_~s~0 4)) (and .cse0 (= ULTIMATE.start_main_~t~0 1) (<= 1 ~counter~0) .cse1 (= ULTIMATE.start_main_~s~0 1)))) [2021-11-02 22:22:55,210 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:22:55,210 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 (= ULTIMATE.start_main_~s~0 4)) (and (<= 2 ~counter~0) (= ULTIMATE.start_main_~a~0 2) .cse0 (= ULTIMATE.start_main_~s~0 9) .cse1) (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 1) .cse1))) [2021-11-02 22:22:55,210 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-02 22:22:55,210 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:22:55,211 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~a~0 2) .cse0 (= ULTIMATE.start_main_~s~0 9)) (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 1) .cse1) (and (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (= ULTIMATE.start_main_~t~0 3) .cse0 .cse1))) [2021-11-02 22:22:55,211 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-11-02 22:22:55,211 INFO L860 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-11-02 22:22:55,211 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:22:55,211 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:22:55,211 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:22:55,211 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:22:55,211 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:22:55,212 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:22:55,212 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-11-02 22:22:55,212 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2021-11-02 22:22:55,212 INFO L853 garLoopResultBuilder]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (<= 2 ~counter~0) .cse0 (= ULTIMATE.start_main_~a~0 2) .cse1 (= ULTIMATE.start_main_~s~0 9)) (and (<= 0 ~counter~0) (= ULTIMATE.start_main_~t~0 1) .cse1 (= ULTIMATE.start_main_~s~0 1)) (and .cse0 (<= 1 ~counter~0) (= ULTIMATE.start_main_~a~0 1) .cse1 (= ULTIMATE.start_main_~s~0 4)))) [2021-11-02 22:22:55,212 INFO L857 garLoopResultBuilder]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2021-11-02 22:22:55,214 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-02 22:22:55,218 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:55,220 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:22:55,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:22:55 BoogieIcfgContainer [2021-11-02 22:22:55,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:22:55,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:22:55,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:22:55,263 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:22:55,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:22:49" (3/4) ... [2021-11-02 22:22:55,267 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 22:22:55,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-02 22:22:55,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 22:22:55,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:22:55,289 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:22:55,342 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:22:55,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:22:55,344 INFO L168 Benchmark]: Toolchain (without parser) took 6104.48 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 65.1 MB in the beginning and 79.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-11-02 22:22:55,344 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 107.0 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:22:55,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.69 ms. Allocated memory is still 107.0 MB. Free memory was 64.9 MB in the beginning and 80.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:22:55,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.49 ms. Allocated memory is still 107.0 MB. Free memory was 80.7 MB in the beginning and 79.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:22:55,346 INFO L168 Benchmark]: Boogie Preprocessor took 21.68 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 78.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:22:55,346 INFO L168 Benchmark]: RCFGBuilder took 283.32 ms. Allocated memory is still 107.0 MB. Free memory was 78.0 MB in the beginning and 67.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:22:55,347 INFO L168 Benchmark]: TraceAbstraction took 5399.70 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 67.2 MB in the beginning and 82.7 MB in the end (delta: -15.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-11-02 22:22:55,347 INFO L168 Benchmark]: Witness Printer took 80.49 ms. Allocated memory is still 142.6 MB. Free memory was 82.7 MB in the beginning and 79.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:22:55,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 107.0 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.69 ms. Allocated memory is still 107.0 MB. Free memory was 64.9 MB in the beginning and 80.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.49 ms. Allocated memory is still 107.0 MB. Free memory was 80.7 MB in the beginning and 79.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.68 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 78.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 283.32 ms. Allocated memory is still 107.0 MB. Free memory was 78.0 MB in the beginning and 67.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5399.70 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 67.2 MB in the beginning and 82.7 MB in the end (delta: -15.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Witness Printer took 80.49 ms. Allocated memory is still 142.6 MB. Free memory was 82.7 MB in the beginning and 79.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 162 SDtfs, 134 SDslu, 204 SDs, 0 SdLazy, 329 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, InterpolantAutomatonStates: 48, 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, 9 MinimizatonAttempts, 22 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 25 NumberOfFragments, 300 HoareAnnotationTreeSize, 8 FomulaSimplifications, 292 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 113 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 868 SizeOfPredicates, 23 NumberOfNonLiveVariables, 651 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 16/54 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 Derived loop invariant: ((((2 <= counter && 1 <= cond) && a == 1) && t == 2 * a + 1) && s == 4) || ((((1 <= cond && t == 1) && 1 <= counter) && t == 2 * a + 1) && s == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((2 <= counter && 1 <= cond) && a == 1) && t == 2 * a + 1) && s == 4) || ((((1 <= cond && t == 1) && 1 <= counter) && t == 2 * a + 1) && s == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && t == 2 * a + 1) && !(0 == cond)) && s == 4) || ((((2 <= counter && a == 2) && t == 2 * a + 1) && s == 9) && !(0 == cond))) || (((t == 1 && t == 2 * a + 1) && s == 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((2 <= counter && 1 <= cond) && a == 2) && t == 2 * a + 1) && s == 9) || (((t == 1 && t == 2 * a + 1) && s == 1) && !(0 == cond))) || (((s == t + 1 && t == 3) && t == 2 * a + 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((2 <= counter && 1 <= cond) && a == 1) && t == 2 * a + 1) && s == 4) || ((((1 <= cond && t == 1) && 1 <= counter) && t == 2 * a + 1) && s == 1) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((2 <= counter && 1 <= cond) && a == 2) && t == 2 * a + 1) && s == 9) || (((0 <= counter && t == 1) && t == 2 * a + 1) && s == 1)) || ((((1 <= cond && 1 <= counter) && a == 1) && t == 2 * a + 1) && s == 4) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-02 22:22:55,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1efc967-11a4-416f-a94c-c41b1ef27d49/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE