./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a --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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:34:59,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:34:59,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:34:59,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:34:59,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:34:59,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:34:59,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:34:59,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:34:59,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:34:59,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:34:59,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:34:59,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:34:59,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:34:59,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:34:59,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:34:59,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:34:59,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:34:59,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:34:59,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:34:59,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:34:59,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:34:59,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:34:59,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:34:59,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:34:59,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:34:59,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:34:59,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:34:59,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:34:59,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:34:59,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:34:59,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:34:59,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:34:59,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:34:59,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:34:59,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:34:59,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:34:59,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:34:59,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:34:59,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:34:59,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:34:59,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:34:59,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:34:59,869 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:34:59,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:34:59,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:34:59,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:34:59,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:34:59,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:34:59,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:34:59,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:34:59,873 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:34:59,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:34:59,875 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:34:59,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:34:59,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:34:59,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:34:59,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:34:59,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:34:59,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:34:59,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:34:59,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:34:59,880 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:34:59,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:34:59,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:34:59,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:34:59,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:34:59,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:34:59,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:34:59,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:34:59,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:34:59,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:34:59,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:34:59,891 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:34:59,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:34:59,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:34:59,892 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_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2022-11-21 16:35:00,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:35:00,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:35:00,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:35:00,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:35:00,251 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:35:00,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/bitvector/byte_add_2-2.i [2022-11-21 16:35:03,177 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:35:03,392 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:35:03,393 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/sv-benchmarks/c/bitvector/byte_add_2-2.i [2022-11-21 16:35:03,402 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/data/096a81d28/89ee1038dfb04a9abbdcf1ad0df81f1e/FLAGf95c9a096 [2022-11-21 16:35:03,416 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/data/096a81d28/89ee1038dfb04a9abbdcf1ad0df81f1e [2022-11-21 16:35:03,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:35:03,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:35:03,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:35:03,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:35:03,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:35:03,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50388390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03, skipping insertion in model container [2022-11-21 16:35:03,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:35:03,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:35:03,630 WARN L237 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_dc07f440-d3f8-4e35-89c1-513ac6d226b6/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2022-11-21 16:35:03,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:35:03,678 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:35:03,691 WARN L237 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_dc07f440-d3f8-4e35-89c1-513ac6d226b6/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2022-11-21 16:35:03,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:35:03,728 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:35:03,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03 WrapperNode [2022-11-21 16:35:03,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:35:03,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:35:03,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:35:03,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:35:03,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,779 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 141 [2022-11-21 16:35:03,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:35:03,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:35:03,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:35:03,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:35:03,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,814 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:35:03,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:35:03,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:35:03,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:35:03,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (1/1) ... [2022-11-21 16:35:03,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:35:03,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:35:03,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:35:03,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:35:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:35:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:35:03,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:35:03,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:35:04,038 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:35:04,040 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:35:04,555 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:35:04,562 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:35:04,562 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 16:35:04,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:35:04 BoogieIcfgContainer [2022-11-21 16:35:04,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:35:04,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:35:04,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:35:04,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:35:04,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:35:03" (1/3) ... [2022-11-21 16:35:04,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c20c0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:35:04, skipping insertion in model container [2022-11-21 16:35:04,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:03" (2/3) ... [2022-11-21 16:35:04,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c20c0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:35:04, skipping insertion in model container [2022-11-21 16:35:04,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:35:04" (3/3) ... [2022-11-21 16:35:04,592 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2022-11-21 16:35:04,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:35:04,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:35:04,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:35:04,727 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74058ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:35:04,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:35:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 46 states have internal predecessors, (80), 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) [2022-11-21 16:35:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:35:04,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:04,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:04,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:04,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:04,748 INFO L85 PathProgramCache]: Analyzing trace with hash 903950584, now seen corresponding path program 1 times [2022-11-21 16:35:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:04,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841986751] [2022-11-21 16:35:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:04,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:04,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:04,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841986751] [2022-11-21 16:35:04,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841986751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:04,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:04,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:35:04,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183112975] [2022-11-21 16:35:04,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:04,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:35:04,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:04,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:35:04,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:35:05,001 INFO L87 Difference]: Start difference. First operand has 47 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 46 states have internal predecessors, (80), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-11-21 16:35:05,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:05,023 INFO L93 Difference]: Finished difference Result 64 states and 105 transitions. [2022-11-21 16:35:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:35:05,025 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2022-11-21 16:35:05,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:05,035 INFO L225 Difference]: With dead ends: 64 [2022-11-21 16:35:05,035 INFO L226 Difference]: Without dead ends: 43 [2022-11-21 16:35:05,038 INFO L412 NwaCegarLoop]: 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 [2022-11-21 16:35:05,042 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:05,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:35:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-21 16:35:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-21 16:35:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 42 states have internal predecessors, (73), 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) [2022-11-21 16:35:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 73 transitions. [2022-11-21 16:35:05,083 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 73 transitions. Word has length 13 [2022-11-21 16:35:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:05,084 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 73 transitions. [2022-11-21 16:35:05,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-11-21 16:35:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 73 transitions. [2022-11-21 16:35:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:35:05,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:05,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:05,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:35:05,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:05,087 INFO L85 PathProgramCache]: Analyzing trace with hash 430337229, now seen corresponding path program 1 times [2022-11-21 16:35:05,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:05,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472444296] [2022-11-21 16:35:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:05,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:05,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:05,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472444296] [2022-11-21 16:35:05,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472444296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:05,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:05,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:35:05,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622110738] [2022-11-21 16:35:05,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:05,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:35:05,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:05,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:35:05,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:05,469 INFO L87 Difference]: Start difference. First operand 43 states and 73 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-21 16:35:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:05,665 INFO L93 Difference]: Finished difference Result 102 states and 179 transitions. [2022-11-21 16:35:05,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:35:05,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-11-21 16:35:05,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:05,672 INFO L225 Difference]: With dead ends: 102 [2022-11-21 16:35:05,672 INFO L226 Difference]: Without dead ends: 69 [2022-11-21 16:35:05,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:05,679 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 29 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:05,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-21 16:35:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2022-11-21 16:35:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 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) [2022-11-21 16:35:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 103 transitions. [2022-11-21 16:35:05,704 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 103 transitions. Word has length 13 [2022-11-21 16:35:05,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:05,705 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 103 transitions. [2022-11-21 16:35:05,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-21 16:35:05,705 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 103 transitions. [2022-11-21 16:35:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 16:35:05,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:05,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:05,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:35:05,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:05,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2037878536, now seen corresponding path program 1 times [2022-11-21 16:35:05,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:05,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227114906] [2022-11-21 16:35:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:05,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:05,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:05,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227114906] [2022-11-21 16:35:05,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227114906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:05,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:05,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:35:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279344778] [2022-11-21 16:35:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:05,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:35:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:35:05,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:35:05,945 INFO L87 Difference]: Start difference. First operand 67 states and 103 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:06,231 INFO L93 Difference]: Finished difference Result 168 states and 287 transitions. [2022-11-21 16:35:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:35:06,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-21 16:35:06,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:06,234 INFO L225 Difference]: With dead ends: 168 [2022-11-21 16:35:06,234 INFO L226 Difference]: Without dead ends: 135 [2022-11-21 16:35:06,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:06,236 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 112 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:06,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 105 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-21 16:35:06,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2022-11-21 16:35:06,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 92 states have internal predecessors, (143), 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) [2022-11-21 16:35:06,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 143 transitions. [2022-11-21 16:35:06,250 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 143 transitions. Word has length 19 [2022-11-21 16:35:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:06,250 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 143 transitions. [2022-11-21 16:35:06,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 143 transitions. [2022-11-21 16:35:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:35:06,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:06,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:06,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:35:06,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:06,253 INFO L85 PathProgramCache]: Analyzing trace with hash -21369817, now seen corresponding path program 1 times [2022-11-21 16:35:06,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:06,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481744114] [2022-11-21 16:35:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:06,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 16:35:06,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:06,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481744114] [2022-11-21 16:35:06,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481744114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:06,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:06,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:35:06,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989232941] [2022-11-21 16:35:06,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:35:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:06,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:35:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:35:06,603 INFO L87 Difference]: Start difference. First operand 93 states and 143 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:06,849 INFO L93 Difference]: Finished difference Result 272 states and 412 transitions. [2022-11-21 16:35:06,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:35:06,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-21 16:35:06,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:06,851 INFO L225 Difference]: With dead ends: 272 [2022-11-21 16:35:06,851 INFO L226 Difference]: Without dead ends: 192 [2022-11-21 16:35:06,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:06,853 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 105 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:06,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 201 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-21 16:35:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 101. [2022-11-21 16:35:06,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.52) internal successors, (152), 100 states have internal predecessors, (152), 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) [2022-11-21 16:35:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 152 transitions. [2022-11-21 16:35:06,866 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 152 transitions. Word has length 25 [2022-11-21 16:35:06,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:06,866 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 152 transitions. [2022-11-21 16:35:06,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 152 transitions. [2022-11-21 16:35:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 16:35:06,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:06,868 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:06,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:35:06,868 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:06,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:06,869 INFO L85 PathProgramCache]: Analyzing trace with hash -53067146, now seen corresponding path program 1 times [2022-11-21 16:35:06,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:06,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666780831] [2022-11-21 16:35:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:06,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 16:35:06,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:06,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666780831] [2022-11-21 16:35:06,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666780831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:06,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:06,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:35:06,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051174673] [2022-11-21 16:35:06,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:06,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:35:06,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:06,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:35:06,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:06,998 INFO L87 Difference]: Start difference. First operand 101 states and 152 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-11-21 16:35:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:07,006 INFO L93 Difference]: Finished difference Result 179 states and 272 transitions. [2022-11-21 16:35:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:35:07,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 26 [2022-11-21 16:35:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:07,008 INFO L225 Difference]: With dead ends: 179 [2022-11-21 16:35:07,008 INFO L226 Difference]: Without dead ends: 93 [2022-11-21 16:35:07,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:07,009 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 64 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:07,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 67 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:35:07,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-21 16:35:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-11-21 16:35:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 92 states have internal predecessors, (139), 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) [2022-11-21 16:35:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 139 transitions. [2022-11-21 16:35:07,019 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 139 transitions. Word has length 26 [2022-11-21 16:35:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:07,020 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 139 transitions. [2022-11-21 16:35:07,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-11-21 16:35:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 139 transitions. [2022-11-21 16:35:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 16:35:07,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:07,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:07,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:35:07,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:07,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash -350554629, now seen corresponding path program 1 times [2022-11-21 16:35:07,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:07,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136076581] [2022-11-21 16:35:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:07,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:35:07,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:07,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136076581] [2022-11-21 16:35:07,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136076581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:07,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:07,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:35:07,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491811787] [2022-11-21 16:35:07,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:07,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:35:07,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:07,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:35:07,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:35:07,228 INFO L87 Difference]: Start difference. First operand 93 states and 139 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:07,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:07,473 INFO L93 Difference]: Finished difference Result 273 states and 407 transitions. [2022-11-21 16:35:07,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:35:07,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-21 16:35:07,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:07,475 INFO L225 Difference]: With dead ends: 273 [2022-11-21 16:35:07,475 INFO L226 Difference]: Without dead ends: 194 [2022-11-21 16:35:07,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:07,477 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 102 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:07,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 195 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:07,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-21 16:35:07,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 98. [2022-11-21 16:35:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.4845360824742269) internal successors, (144), 97 states have internal predecessors, (144), 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) [2022-11-21 16:35:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 144 transitions. [2022-11-21 16:35:07,490 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 144 transitions. Word has length 32 [2022-11-21 16:35:07,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:07,490 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 144 transitions. [2022-11-21 16:35:07,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 144 transitions. [2022-11-21 16:35:07,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-21 16:35:07,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:07,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:07,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:35:07,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:07,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:07,494 INFO L85 PathProgramCache]: Analyzing trace with hash -143141955, now seen corresponding path program 1 times [2022-11-21 16:35:07,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:07,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048635145] [2022-11-21 16:35:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:07,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:35:07,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:07,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048635145] [2022-11-21 16:35:07,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048635145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:07,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:07,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:35:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093618353] [2022-11-21 16:35:07,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:07,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:35:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:07,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:35:07,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:35:07,660 INFO L87 Difference]: Start difference. First operand 98 states and 144 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2022-11-21 16:35:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:07,915 INFO L93 Difference]: Finished difference Result 274 states and 429 transitions. [2022-11-21 16:35:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:35:07,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) Word has length 33 [2022-11-21 16:35:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:07,917 INFO L225 Difference]: With dead ends: 274 [2022-11-21 16:35:07,917 INFO L226 Difference]: Without dead ends: 196 [2022-11-21 16:35:07,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:07,919 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 116 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:07,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 86 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-21 16:35:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 137. [2022-11-21 16:35:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.536764705882353) internal successors, (209), 136 states have internal predecessors, (209), 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) [2022-11-21 16:35:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 209 transitions. [2022-11-21 16:35:07,931 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 209 transitions. Word has length 33 [2022-11-21 16:35:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:07,931 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 209 transitions. [2022-11-21 16:35:07,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2022-11-21 16:35:07,932 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 209 transitions. [2022-11-21 16:35:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-21 16:35:07,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:07,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:07,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:35:07,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:07,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:07,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1481468776, now seen corresponding path program 1 times [2022-11-21 16:35:07,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:07,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805842673] [2022-11-21 16:35:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:07,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:35:08,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:08,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805842673] [2022-11-21 16:35:08,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805842673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:35:08,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147815644] [2022-11-21 16:35:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:08,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:35:08,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:35:08,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:35:08,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:35:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:08,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:35:08,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 16:35:08,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:08,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147815644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:08,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:35:08,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-21 16:35:08,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520785478] [2022-11-21 16:35:08,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:08,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:35:08,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:35:08,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:35:08,620 INFO L87 Difference]: Start difference. First operand 137 states and 209 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-11-21 16:35:08,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:08,776 INFO L93 Difference]: Finished difference Result 284 states and 447 transitions. [2022-11-21 16:35:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:35:08,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 39 [2022-11-21 16:35:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:08,783 INFO L225 Difference]: With dead ends: 284 [2022-11-21 16:35:08,784 INFO L226 Difference]: Without dead ends: 160 [2022-11-21 16:35:08,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:35:08,786 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:08,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 82 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:35:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-21 16:35:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 137. [2022-11-21 16:35:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 136 states have internal predecessors, (206), 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) [2022-11-21 16:35:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 206 transitions. [2022-11-21 16:35:08,807 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 206 transitions. Word has length 39 [2022-11-21 16:35:08,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:08,807 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 206 transitions. [2022-11-21 16:35:08,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-11-21 16:35:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 206 transitions. [2022-11-21 16:35:08,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-21 16:35:08,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:08,810 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:08,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:35:09,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-21 16:35:09,021 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:09,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:09,022 INFO L85 PathProgramCache]: Analyzing trace with hash -115920210, now seen corresponding path program 1 times [2022-11-21 16:35:09,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:09,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053670302] [2022-11-21 16:35:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:09,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-21 16:35:09,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:09,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053670302] [2022-11-21 16:35:09,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053670302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:09,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:09,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:35:09,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773538483] [2022-11-21 16:35:09,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:09,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:35:09,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:09,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:35:09,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:35:09,305 INFO L87 Difference]: Start difference. First operand 137 states and 206 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:09,492 INFO L93 Difference]: Finished difference Result 380 states and 580 transitions. [2022-11-21 16:35:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:35:09,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-21 16:35:09,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:09,494 INFO L225 Difference]: With dead ends: 380 [2022-11-21 16:35:09,494 INFO L226 Difference]: Without dead ends: 258 [2022-11-21 16:35:09,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:09,497 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 99 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:09,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 82 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-21 16:35:09,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 179. [2022-11-21 16:35:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.5561797752808988) internal successors, (277), 178 states have internal predecessors, (277), 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) [2022-11-21 16:35:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 277 transitions. [2022-11-21 16:35:09,514 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 277 transitions. Word has length 53 [2022-11-21 16:35:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:09,515 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 277 transitions. [2022-11-21 16:35:09,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 277 transitions. [2022-11-21 16:35:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 16:35:09,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:09,520 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:09,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:35:09,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:09,521 INFO L85 PathProgramCache]: Analyzing trace with hash 380800779, now seen corresponding path program 1 times [2022-11-21 16:35:09,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:09,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253234096] [2022-11-21 16:35:09,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:09,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-21 16:35:09,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:09,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253234096] [2022-11-21 16:35:09,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253234096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:09,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:09,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:35:09,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799121942] [2022-11-21 16:35:09,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:09,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:35:09,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:09,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:35:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:09,816 INFO L87 Difference]: Start difference. First operand 179 states and 277 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-11-21 16:35:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:10,148 INFO L93 Difference]: Finished difference Result 709 states and 1096 transitions. [2022-11-21 16:35:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:35:10,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 66 [2022-11-21 16:35:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:10,152 INFO L225 Difference]: With dead ends: 709 [2022-11-21 16:35:10,152 INFO L226 Difference]: Without dead ends: 546 [2022-11-21 16:35:10,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:35:10,153 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 187 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:10,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 312 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:35:10,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-11-21 16:35:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 179. [2022-11-21 16:35:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.5561797752808988) internal successors, (277), 178 states have internal predecessors, (277), 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) [2022-11-21 16:35:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 277 transitions. [2022-11-21 16:35:10,167 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 277 transitions. Word has length 66 [2022-11-21 16:35:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:10,167 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 277 transitions. [2022-11-21 16:35:10,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-11-21 16:35:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 277 transitions. [2022-11-21 16:35:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-21 16:35:10,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:10,169 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:10,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:35:10,169 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1313996354, now seen corresponding path program 1 times [2022-11-21 16:35:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:10,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042800462] [2022-11-21 16:35:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:10,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-21 16:35:10,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:10,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042800462] [2022-11-21 16:35:10,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042800462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:10,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:10,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:35:10,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320824829] [2022-11-21 16:35:10,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:10,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:35:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:10,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:35:10,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:35:10,487 INFO L87 Difference]: Start difference. First operand 179 states and 277 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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) [2022-11-21 16:35:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:11,134 INFO L93 Difference]: Finished difference Result 912 states and 1399 transitions. [2022-11-21 16:35:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:35:11,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 67 [2022-11-21 16:35:11,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:11,139 INFO L225 Difference]: With dead ends: 912 [2022-11-21 16:35:11,144 INFO L226 Difference]: Without dead ends: 749 [2022-11-21 16:35:11,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:35:11,145 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 377 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:11,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 602 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 16:35:11,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-21 16:35:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 174. [2022-11-21 16:35:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.5664739884393064) internal successors, (271), 173 states have internal predecessors, (271), 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) [2022-11-21 16:35:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 271 transitions. [2022-11-21 16:35:11,161 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 271 transitions. Word has length 67 [2022-11-21 16:35:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:11,161 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 271 transitions. [2022-11-21 16:35:11,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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) [2022-11-21 16:35:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 271 transitions. [2022-11-21 16:35:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-21 16:35:11,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:11,163 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:11,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:35:11,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:11,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:11,164 INFO L85 PathProgramCache]: Analyzing trace with hash -725391719, now seen corresponding path program 1 times [2022-11-21 16:35:11,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:11,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030623095] [2022-11-21 16:35:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:11,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-21 16:35:11,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:35:11,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030623095] [2022-11-21 16:35:11,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030623095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:35:11,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448791100] [2022-11-21 16:35:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:11,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:35:11,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:35:11,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:35:11,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:35:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:11,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:35:11,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-21 16:35:11,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:35:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-21 16:35:11,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448791100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:35:11,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:35:11,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 11 [2022-11-21 16:35:11,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517267549] [2022-11-21 16:35:11,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:35:11,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:35:11,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:35:11,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:35:11,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:35:11,804 INFO L87 Difference]: Start difference. First operand 174 states and 271 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2022-11-21 16:35:12,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:12,779 INFO L93 Difference]: Finished difference Result 950 states and 1502 transitions. [2022-11-21 16:35:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:35:12,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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 69 [2022-11-21 16:35:12,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:12,782 INFO L225 Difference]: With dead ends: 950 [2022-11-21 16:35:12,782 INFO L226 Difference]: Without dead ends: 711 [2022-11-21 16:35:12,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:35:12,784 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 546 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:12,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 341 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 16:35:12,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-11-21 16:35:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 493. [2022-11-21 16:35:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.4634146341463414) internal successors, (720), 492 states have internal predecessors, (720), 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) [2022-11-21 16:35:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 720 transitions. [2022-11-21 16:35:12,821 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 720 transitions. Word has length 69 [2022-11-21 16:35:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:12,821 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 720 transitions. [2022-11-21 16:35:12,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2022-11-21 16:35:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 720 transitions. [2022-11-21 16:35:12,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-21 16:35:12,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:12,823 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:12,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:13,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:35:13,029 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:13,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:13,029 INFO L85 PathProgramCache]: Analyzing trace with hash 319706574, now seen corresponding path program 1 times [2022-11-21 16:35:13,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:35:13,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443391850] [2022-11-21 16:35:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:13,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:35:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:35:13,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:35:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:35:13,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:35:13,224 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:35:13,225 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 16:35:13,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:35:13,231 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:13,235 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:35:13,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:35:13 BoogieIcfgContainer [2022-11-21 16:35:13,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:35:13,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:35:13,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:35:13,313 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:35:13,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:35:04" (3/4) ... [2022-11-21 16:35:13,320 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 16:35:13,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:35:13,321 INFO L158 Benchmark]: Toolchain (without parser) took 9900.44ms. Allocated memory was 134.2MB in the beginning and 270.5MB in the end (delta: 136.3MB). Free memory was 69.0MB in the beginning and 209.8MB in the end (delta: -140.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:35:13,321 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory was 108.7MB in the beginning and 108.5MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:35:13,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.48ms. Allocated memory was 134.2MB in the beginning and 186.6MB in the end (delta: 52.4MB). Free memory was 68.9MB in the beginning and 153.8MB in the end (delta: -84.9MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-11-21 16:35:13,321 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.89ms. Allocated memory is still 186.6MB. Free memory was 153.8MB in the beginning and 150.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:35:13,322 INFO L158 Benchmark]: Boogie Preprocessor took 40.73ms. Allocated memory is still 186.6MB. Free memory was 150.7MB in the beginning and 148.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:35:13,322 INFO L158 Benchmark]: RCFGBuilder took 743.78ms. Allocated memory is still 186.6MB. Free memory was 148.6MB in the beginning and 127.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-21 16:35:13,323 INFO L158 Benchmark]: TraceAbstraction took 8744.06ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 126.5MB in the beginning and 209.8MB in the end (delta: -83.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:35:13,323 INFO L158 Benchmark]: Witness Printer took 7.88ms. Allocated memory is still 270.5MB. Free memory is still 209.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:35:13,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory was 108.7MB in the beginning and 108.5MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.48ms. Allocated memory was 134.2MB in the beginning and 186.6MB in the end (delta: 52.4MB). Free memory was 68.9MB in the beginning and 153.8MB in the end (delta: -84.9MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.89ms. Allocated memory is still 186.6MB. Free memory was 153.8MB in the beginning and 150.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.73ms. Allocated memory is still 186.6MB. Free memory was 150.7MB in the beginning and 148.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 743.78ms. Allocated memory is still 186.6MB. Free memory was 148.6MB in the beginning and 127.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8744.06ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 126.5MB in the beginning and 209.8MB in the end (delta: -83.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.88ms. Allocated memory is still 270.5MB. Free memory is still 209.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 25]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 116. Possible FailurePath: [L124] unsigned int a, b, r; [L125] a = __VERIFIER_nondet_uint() [L127] b = 234770789 [L129] CALL, EXPR mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=4] [L59] COND TRUE a3 == (unsigned char)0 [L60] na = na - 1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=3] [L61] COND TRUE a2 == (unsigned char)0 [L62] na = na - 1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=2] [L63] COND TRUE a1 == (unsigned char)0 [L64] na = na - 1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=1] [L68] nb = (unsigned char)4 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=1, nb=4] [L69] COND FALSE !(b3 == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, na=1, nb=4] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=0] [L83] COND TRUE i < na VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=154] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=154] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=154] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=154] [L89] COND TRUE i < nb VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=154] [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255, r0=255] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255, r0=255] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255, r0=255] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=0, na=1, nb=4, partial_sum=255, r0=255] [L104] i = i + (unsigned char)1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=255, r0=255] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=0, r0=255] [L83] COND FALSE !(i < na) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=0, r0=255] [L89] COND TRUE i < nb VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=0, r0=255] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=0, r0=255] [L91] COND TRUE i == (unsigned char)1 [L91] partial_sum = partial_sum + b1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255, r1=81] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255, r1=81] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=1, na=1, nb=4, partial_sum=81, r0=255, r1=81] [L104] i = i + (unsigned char)1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=81, r0=255, r1=81] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=255, r1=81] [L83] COND FALSE !(i < na) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=255, r1=81] [L89] COND TRUE i < nb VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=255, r1=81] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=255, r1=81] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=255, r1=81] [L92] COND TRUE i == (unsigned char)2 [L92] partial_sum = partial_sum + b2 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81] [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81, r2=254] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=255, r1=81, r2=254] [L104] i = i + (unsigned char)1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=254, r0=255, r1=81, r2=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L83] COND FALSE !(i < na) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L89] COND TRUE i < nb VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=255, r1=81, r2=254] [L93] COND TRUE i == (unsigned char)3 [L93] partial_sum = partial_sum + b3 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254] [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254, r3=13] [L104] i = i + (unsigned char)1 VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254, r3=13] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254, r3=13] [L107] COND FALSE !(i < (unsigned char)4) VAL [\old(a)=154, \old(b)=234770789, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=255, r1=81, r2=254, r3=13] [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; VAL [\old(a)=154, \old(b)=234770789, \result=218103808, a=154, a0=-4294967142, a1=-16777216, a2=-65536, a3=-256, b=234770789, b0=234770789, b1=917073, b2=3582, b3=13, carry=0, i=4, na=1, nb=4, partial_sum=13, r=218103808, r0=255, r1=81, r2=254, r3=13] [L129] RET, EXPR mp_add(a, b) [L129] r = mp_add(a, b) [L131] CALL __VERIFIER_assert(r == a + b) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1813 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1813 mSDsluCounter, 2227 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1392 mSDsCounter, 257 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1989 IncrementalHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 257 mSolverCounterUnsat, 835 mSDtfsCounter, 1989 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 275 GetRequests, 208 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=493occurred in iteration=12, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 1552 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 634 NumberOfCodeBlocks, 634 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 617 ConstructedInterpolants, 0 QuantifiedInterpolants, 1907 SizeOfPredicates, 6 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 459/491 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-21 16:35:13,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a --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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:35:15,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:35:15,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:35:15,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:35:15,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:35:15,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:35:15,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:35:15,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:35:15,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:35:16,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:35:16,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:35:16,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:35:16,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:35:16,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:35:16,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:35:16,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:35:16,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:35:16,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:35:16,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:35:16,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:35:16,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:35:16,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:35:16,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:35:16,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:35:16,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:35:16,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:35:16,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:35:16,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:35:16,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:35:16,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:35:16,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:35:16,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:35:16,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:35:16,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:35:16,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:35:16,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:35:16,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:35:16,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:35:16,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:35:16,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:35:16,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:35:16,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-21 16:35:16,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:35:16,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:35:16,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:35:16,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:35:16,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:35:16,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:35:16,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:35:16,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:35:16,138 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:35:16,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:35:16,139 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:35:16,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:35:16,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:35:16,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:35:16,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:35:16,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:35:16,141 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:35:16,142 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 16:35:16,142 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 16:35:16,142 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:35:16,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:35:16,143 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:35:16,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:35:16,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:35:16,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:35:16,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:35:16,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:35:16,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:35:16,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:35:16,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:35:16,146 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 16:35:16,146 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 16:35:16,147 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:35:16,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:35:16,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:35:16,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 16:35:16,148 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2022-11-21 16:35:16,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:35:16,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:35:16,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:35:16,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:35:16,644 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:35:16,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/bitvector/byte_add_2-2.i [2022-11-21 16:35:19,738 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:35:19,969 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:35:19,970 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/sv-benchmarks/c/bitvector/byte_add_2-2.i [2022-11-21 16:35:19,977 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/data/88d7c0299/fffd0cf45ef24a82b102443cfab98fe7/FLAG168bac8d1 [2022-11-21 16:35:20,002 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/data/88d7c0299/fffd0cf45ef24a82b102443cfab98fe7 [2022-11-21 16:35:20,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:35:20,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:35:20,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:35:20,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:35:20,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:35:20,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79dd2f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20, skipping insertion in model container [2022-11-21 16:35:20,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:35:20,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:35:20,224 WARN L237 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_dc07f440-d3f8-4e35-89c1-513ac6d226b6/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2022-11-21 16:35:20,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:35:20,328 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:35:20,354 WARN L237 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_dc07f440-d3f8-4e35-89c1-513ac6d226b6/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2022-11-21 16:35:20,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:35:20,421 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:35:20,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20 WrapperNode [2022-11-21 16:35:20,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:35:20,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:35:20,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:35:20,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:35:20,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,499 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2022-11-21 16:35:20,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:35:20,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:35:20,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:35:20,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:35:20,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,557 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:35:20,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:35:20,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:35:20,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:35:20,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (1/1) ... [2022-11-21 16:35:20,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:35:20,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:35:20,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:35:20,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:35:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:35:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 16:35:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:35:20,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:35:20,757 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:35:20,761 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:35:21,228 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:35:21,246 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:35:21,246 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 16:35:21,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:35:21 BoogieIcfgContainer [2022-11-21 16:35:21,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:35:21,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:35:21,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:35:21,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:35:21,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:35:20" (1/3) ... [2022-11-21 16:35:21,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12adbe6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:35:21, skipping insertion in model container [2022-11-21 16:35:21,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:20" (2/3) ... [2022-11-21 16:35:21,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12adbe6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:35:21, skipping insertion in model container [2022-11-21 16:35:21,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:35:21" (3/3) ... [2022-11-21 16:35:21,258 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2022-11-21 16:35:21,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:35:21,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:35:21,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:35:21,367 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59f2846, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:35:21,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:35:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 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) [2022-11-21 16:35:21,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:35:21,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:21,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:21,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:21,397 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times [2022-11-21 16:35:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:21,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577103851] [2022-11-21 16:35:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:21,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:21,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:21,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:21,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-21 16:35:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:21,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 16:35:21,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:21,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:21,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:21,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577103851] [2022-11-21 16:35:21,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577103851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:21,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:21,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:35:21,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190384001] [2022-11-21 16:35:21,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:21,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:35:21,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:21,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:35:21,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:35:21,647 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-21 16:35:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:21,677 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2022-11-21 16:35:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:35:21,681 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-11-21 16:35:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:21,693 INFO L225 Difference]: With dead ends: 57 [2022-11-21 16:35:21,693 INFO L226 Difference]: Without dead ends: 38 [2022-11-21 16:35:21,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:35:21,705 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:21,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:35:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-21 16:35:21,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-21 16:35:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 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) [2022-11-21 16:35:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2022-11-21 16:35:21,756 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2022-11-21 16:35:21,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:21,757 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2022-11-21 16:35:21,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-21 16:35:21,758 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2022-11-21 16:35:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:35:21,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:21,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:21,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:21,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:21,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:21,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1803477009, now seen corresponding path program 1 times [2022-11-21 16:35:21,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:21,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133738780] [2022-11-21 16:35:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:21,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:21,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:21,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:22,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 16:35:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:22,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:35:22,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:22,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:22,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:22,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133738780] [2022-11-21 16:35:22,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133738780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:22,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:22,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:35:22,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373638353] [2022-11-21 16:35:22,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:22,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:35:22,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:35:22,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:35:22,194 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-21 16:35:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:22,421 INFO L93 Difference]: Finished difference Result 116 states and 201 transitions. [2022-11-21 16:35:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:35:22,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-21 16:35:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:22,423 INFO L225 Difference]: With dead ends: 116 [2022-11-21 16:35:22,424 INFO L226 Difference]: Without dead ends: 88 [2022-11-21 16:35:22,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:35:22,426 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 93 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:22,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 137 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-21 16:35:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2022-11-21 16:35:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.625) internal successors, (130), 80 states have internal predecessors, (130), 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) [2022-11-21 16:35:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 130 transitions. [2022-11-21 16:35:22,459 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 130 transitions. Word has length 12 [2022-11-21 16:35:22,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:22,460 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 130 transitions. [2022-11-21 16:35:22,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-21 16:35:22,461 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 130 transitions. [2022-11-21 16:35:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:35:22,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:22,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:22,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:22,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:22,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:22,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:22,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1087802014, now seen corresponding path program 1 times [2022-11-21 16:35:22,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:22,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417235176] [2022-11-21 16:35:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:22,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:22,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:22,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:22,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-21 16:35:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:22,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:35:22,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:22,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:22,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:22,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417235176] [2022-11-21 16:35:22,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417235176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:22,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:22,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:35:22,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506535819] [2022-11-21 16:35:22,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:22,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:35:22,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:35:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:22,752 INFO L87 Difference]: Start difference. First operand 81 states and 130 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-21 16:35:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:22,762 INFO L93 Difference]: Finished difference Result 86 states and 134 transitions. [2022-11-21 16:35:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:35:22,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-11-21 16:35:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:22,764 INFO L225 Difference]: With dead ends: 86 [2022-11-21 16:35:22,764 INFO L226 Difference]: Without dead ends: 55 [2022-11-21 16:35:22,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:35:22,766 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 55 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:22,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 58 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:35:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-21 16:35:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-21 16:35:22,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 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) [2022-11-21 16:35:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2022-11-21 16:35:22,775 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 13 [2022-11-21 16:35:22,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:22,775 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2022-11-21 16:35:22,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-21 16:35:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2022-11-21 16:35:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:35:22,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:22,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:22,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:22,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:22,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1480128500, now seen corresponding path program 1 times [2022-11-21 16:35:22,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:22,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688232662] [2022-11-21 16:35:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:22,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:22,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:22,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:23,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-21 16:35:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:23,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:35:23,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:23,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:23,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:23,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688232662] [2022-11-21 16:35:23,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688232662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:23,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:23,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:35:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860565787] [2022-11-21 16:35:23,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:23,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:35:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:35:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:35:23,099 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) [2022-11-21 16:35:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:23,297 INFO L93 Difference]: Finished difference Result 151 states and 219 transitions. [2022-11-21 16:35:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:35:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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 [2022-11-21 16:35:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:23,299 INFO L225 Difference]: With dead ends: 151 [2022-11-21 16:35:23,299 INFO L226 Difference]: Without dead ends: 107 [2022-11-21 16:35:23,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:35:23,301 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 67 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:23,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 146 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-21 16:35:23,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 60. [2022-11-21 16:35:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 59 states have internal predecessors, (85), 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) [2022-11-21 16:35:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 85 transitions. [2022-11-21 16:35:23,311 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 85 transitions. Word has length 25 [2022-11-21 16:35:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:23,312 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 85 transitions. [2022-11-21 16:35:23,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) [2022-11-21 16:35:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 85 transitions. [2022-11-21 16:35:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 16:35:23,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:23,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:23,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:23,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:23,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1384042382, now seen corresponding path program 1 times [2022-11-21 16:35:23,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:23,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195391250] [2022-11-21 16:35:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:23,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:23,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:23,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:23,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-21 16:35:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:23,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:35:23,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:23,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:23,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:23,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195391250] [2022-11-21 16:35:23,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195391250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:23,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:23,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:35:23,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633506823] [2022-11-21 16:35:23,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:23,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:35:23,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:23,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:35:23,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:23,647 INFO L87 Difference]: Start difference. First operand 60 states and 85 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-11-21 16:35:23,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:23,915 INFO L93 Difference]: Finished difference Result 201 states and 290 transitions. [2022-11-21 16:35:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:35:23,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2022-11-21 16:35:23,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:23,917 INFO L225 Difference]: With dead ends: 201 [2022-11-21 16:35:23,918 INFO L226 Difference]: Without dead ends: 157 [2022-11-21 16:35:23,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:23,922 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 119 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:23,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 312 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-21 16:35:23,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 60. [2022-11-21 16:35:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 59 states have internal predecessors, (85), 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) [2022-11-21 16:35:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 85 transitions. [2022-11-21 16:35:23,951 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 85 transitions. Word has length 26 [2022-11-21 16:35:23,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:23,952 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 85 transitions. [2022-11-21 16:35:23,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-11-21 16:35:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 85 transitions. [2022-11-21 16:35:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-21 16:35:23,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:23,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:23,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:24,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:24,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1985045161, now seen corresponding path program 1 times [2022-11-21 16:35:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:24,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199633351] [2022-11-21 16:35:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:24,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:24,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:24,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:24,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-21 16:35:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:24,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:35:24,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:24,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:24,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:24,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199633351] [2022-11-21 16:35:24,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199633351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:24,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:24,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:35:24,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159872830] [2022-11-21 16:35:24,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:24,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:35:24,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:24,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:35:24,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:35:24,311 INFO L87 Difference]: Start difference. First operand 60 states and 85 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2022-11-21 16:35:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:24,979 INFO L93 Difference]: Finished difference Result 269 states and 387 transitions. [2022-11-21 16:35:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:35:24,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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 [2022-11-21 16:35:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:24,981 INFO L225 Difference]: With dead ends: 269 [2022-11-21 16:35:24,981 INFO L226 Difference]: Without dead ends: 221 [2022-11-21 16:35:24,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:35:24,982 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 361 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:24,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 462 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 16:35:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-21 16:35:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 57. [2022-11-21 16:35:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 56 states have internal predecessors, (80), 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) [2022-11-21 16:35:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2022-11-21 16:35:24,990 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 27 [2022-11-21 16:35:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:24,990 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2022-11-21 16:35:24,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2022-11-21 16:35:25,007 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2022-11-21 16:35:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 16:35:25,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:25,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:25,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:25,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:25,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:25,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash 221982208, now seen corresponding path program 1 times [2022-11-21 16:35:25,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:25,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543675645] [2022-11-21 16:35:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:25,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:25,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:25,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:25,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-21 16:35:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:25,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:35:25,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:25,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:25,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:25,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543675645] [2022-11-21 16:35:25,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543675645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:25,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:25,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:35:25,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840290846] [2022-11-21 16:35:25,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:25,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:35:25,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:25,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:35:25,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:25,460 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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) [2022-11-21 16:35:25,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:25,697 INFO L93 Difference]: Finished difference Result 128 states and 190 transitions. [2022-11-21 16:35:25,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:35:25,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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) Word has length 29 [2022-11-21 16:35:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:25,698 INFO L225 Difference]: With dead ends: 128 [2022-11-21 16:35:25,698 INFO L226 Difference]: Without dead ends: 82 [2022-11-21 16:35:25,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:25,699 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 93 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:25,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 54 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:25,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-21 16:35:25,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2022-11-21 16:35:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 79 states have internal predecessors, (105), 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) [2022-11-21 16:35:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2022-11-21 16:35:25,726 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 29 [2022-11-21 16:35:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:25,727 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2022-11-21 16:35:25,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 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) [2022-11-21 16:35:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2022-11-21 16:35:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-21 16:35:25,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:25,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:25,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:25,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:25,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:25,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:25,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1280602341, now seen corresponding path program 1 times [2022-11-21 16:35:25,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:25,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486901596] [2022-11-21 16:35:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:25,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:25,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:25,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:25,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-21 16:35:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:25,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:35:25,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:26,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:26,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:26,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486901596] [2022-11-21 16:35:26,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486901596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:26,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:26,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:35:26,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097935331] [2022-11-21 16:35:26,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:26,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:35:26,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:26,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:35:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:26,113 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:26,336 INFO L93 Difference]: Finished difference Result 226 states and 295 transitions. [2022-11-21 16:35:26,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:35:26,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-21 16:35:26,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:26,337 INFO L225 Difference]: With dead ends: 226 [2022-11-21 16:35:26,337 INFO L226 Difference]: Without dead ends: 157 [2022-11-21 16:35:26,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:35:26,339 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 90 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:26,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 129 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-21 16:35:26,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 133. [2022-11-21 16:35:26,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3181818181818181) internal successors, (174), 132 states have internal predecessors, (174), 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) [2022-11-21 16:35:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2022-11-21 16:35:26,355 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 42 [2022-11-21 16:35:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:26,356 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2022-11-21 16:35:26,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:26,356 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2022-11-21 16:35:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 16:35:26,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:26,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:26,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:26,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:26,570 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:26,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:26,571 INFO L85 PathProgramCache]: Analyzing trace with hash -649034713, now seen corresponding path program 1 times [2022-11-21 16:35:26,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:26,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562116131] [2022-11-21 16:35:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:26,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:26,573 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:26,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-21 16:35:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:26,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:35:26,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:26,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:26,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:26,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:26,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562116131] [2022-11-21 16:35:26,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562116131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:26,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:26,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:35:26,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529127656] [2022-11-21 16:35:26,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:26,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:35:26,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:26,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:35:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:35:26,775 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:27,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:27,129 INFO L93 Difference]: Finished difference Result 301 states and 391 transitions. [2022-11-21 16:35:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:35:27,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-21 16:35:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:27,132 INFO L225 Difference]: With dead ends: 301 [2022-11-21 16:35:27,132 INFO L226 Difference]: Without dead ends: 232 [2022-11-21 16:35:27,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:35:27,133 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 127 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:27,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 271 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:35:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-21 16:35:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 133. [2022-11-21 16:35:27,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3181818181818181) internal successors, (174), 132 states have internal predecessors, (174), 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) [2022-11-21 16:35:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2022-11-21 16:35:27,157 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 43 [2022-11-21 16:35:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:27,158 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2022-11-21 16:35:27,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:35:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2022-11-21 16:35:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-21 16:35:27,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:27,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:27,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:27,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:27,376 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2080233776, now seen corresponding path program 1 times [2022-11-21 16:35:27,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:27,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360550605] [2022-11-21 16:35:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:27,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:27,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:27,379 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:27,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-21 16:35:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:27,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:35:27,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:27,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:35:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:27,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:27,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360550605] [2022-11-21 16:35:27,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360550605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:35:27,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:35:27,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-21 16:35:27,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393942474] [2022-11-21 16:35:27,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:35:27,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:35:27,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:27,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:35:27,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:35:27,740 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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) [2022-11-21 16:35:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:28,077 INFO L93 Difference]: Finished difference Result 451 states and 608 transitions. [2022-11-21 16:35:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:35:28,078 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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 44 [2022-11-21 16:35:28,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:28,082 INFO L225 Difference]: With dead ends: 451 [2022-11-21 16:35:28,083 INFO L226 Difference]: Without dead ends: 335 [2022-11-21 16:35:28,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:35:28,086 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 307 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:28,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 376 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:35:28,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-21 16:35:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 192. [2022-11-21 16:35:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3769633507853403) internal successors, (263), 191 states have internal predecessors, (263), 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) [2022-11-21 16:35:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 263 transitions. [2022-11-21 16:35:28,124 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 263 transitions. Word has length 44 [2022-11-21 16:35:28,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:28,124 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 263 transitions. [2022-11-21 16:35:28,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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) [2022-11-21 16:35:28,125 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 263 transitions. [2022-11-21 16:35:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-21 16:35:28,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:28,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:28,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:28,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:28,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:28,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1822068338, now seen corresponding path program 1 times [2022-11-21 16:35:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:28,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728261646] [2022-11-21 16:35:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:28,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:28,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:28,343 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:28,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-21 16:35:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:28,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:35:28,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:28,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:35:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:28,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:28,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728261646] [2022-11-21 16:35:28,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728261646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:35:28,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:35:28,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-21 16:35:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178965156] [2022-11-21 16:35:28,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:35:28,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:35:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:28,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:35:28,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:35:28,721 INFO L87 Difference]: Start difference. First operand 192 states and 263 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 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) [2022-11-21 16:35:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:29,145 INFO L93 Difference]: Finished difference Result 592 states and 893 transitions. [2022-11-21 16:35:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:35:29,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 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 44 [2022-11-21 16:35:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:29,148 INFO L225 Difference]: With dead ends: 592 [2022-11-21 16:35:29,149 INFO L226 Difference]: Without dead ends: 417 [2022-11-21 16:35:29,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:35:29,150 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 336 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:29,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 92 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:35:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-21 16:35:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 341. [2022-11-21 16:35:29,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3941176470588235) internal successors, (474), 340 states have internal predecessors, (474), 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) [2022-11-21 16:35:29,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 474 transitions. [2022-11-21 16:35:29,199 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 474 transitions. Word has length 44 [2022-11-21 16:35:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:29,200 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 474 transitions. [2022-11-21 16:35:29,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 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) [2022-11-21 16:35:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 474 transitions. [2022-11-21 16:35:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-21 16:35:29,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:29,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:29,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:29,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:29,414 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:29,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash 343661932, now seen corresponding path program 1 times [2022-11-21 16:35:29,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:29,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204396633] [2022-11-21 16:35:29,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:29,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:29,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:29,417 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:29,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-21 16:35:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:29,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:35:29,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 66 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 16:35:29,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:35:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 16:35:29,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:29,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204396633] [2022-11-21 16:35:29,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204396633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:35:29,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:35:29,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2022-11-21 16:35:29,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157435153] [2022-11-21 16:35:29,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:35:29,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:35:29,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:29,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:35:29,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:35:29,743 INFO L87 Difference]: Start difference. First operand 341 states and 474 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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) [2022-11-21 16:35:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:30,050 INFO L93 Difference]: Finished difference Result 945 states and 1261 transitions. [2022-11-21 16:35:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:35:30,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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 70 [2022-11-21 16:35:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:30,053 INFO L225 Difference]: With dead ends: 945 [2022-11-21 16:35:30,054 INFO L226 Difference]: Without dead ends: 621 [2022-11-21 16:35:30,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:35:30,055 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 216 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:30,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 288 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:35:30,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-11-21 16:35:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 341. [2022-11-21 16:35:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3764705882352941) internal successors, (468), 340 states have internal predecessors, (468), 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) [2022-11-21 16:35:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 468 transitions. [2022-11-21 16:35:30,104 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 468 transitions. Word has length 70 [2022-11-21 16:35:30,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:30,104 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 468 transitions. [2022-11-21 16:35:30,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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) [2022-11-21 16:35:30,105 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 468 transitions. [2022-11-21 16:35:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-21 16:35:30,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:30,106 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:30,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:30,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:30,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:30,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:30,319 INFO L85 PathProgramCache]: Analyzing trace with hash 484210542, now seen corresponding path program 2 times [2022-11-21 16:35:30,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:30,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539097476] [2022-11-21 16:35:30,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:35:30,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:30,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:30,321 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:30,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-21 16:35:30,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:35:30,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:35:30,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-21 16:35:30,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:34,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:35:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:35:38,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:38,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539097476] [2022-11-21 16:35:38,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539097476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:35:38,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:35:38,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2022-11-21 16:35:38,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911658330] [2022-11-21 16:35:38,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:35:38,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-21 16:35:38,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:38,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-21 16:35:38,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-11-21 16:35:38,105 INFO L87 Difference]: Start difference. First operand 341 states and 468 transitions. Second operand has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 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) [2022-11-21 16:35:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:57,754 INFO L93 Difference]: Finished difference Result 2188 states and 2902 transitions. [2022-11-21 16:35:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-21 16:35:57,756 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 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 70 [2022-11-21 16:35:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:57,762 INFO L225 Difference]: With dead ends: 2188 [2022-11-21 16:35:57,763 INFO L226 Difference]: Without dead ends: 1999 [2022-11-21 16:35:57,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=2223, Invalid=10887, Unknown=0, NotChecked=0, Total=13110 [2022-11-21 16:35:57,769 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 2606 mSDsluCounter, 6871 mSDsCounter, 0 mSdLazyCounter, 3858 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2606 SdHoareTripleChecker+Valid, 7266 SdHoareTripleChecker+Invalid, 4006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:57,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2606 Valid, 7266 Invalid, 4006 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 3858 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-21 16:35:57,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2022-11-21 16:35:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 893. [2022-11-21 16:35:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 1.4002242152466369) internal successors, (1249), 892 states have internal predecessors, (1249), 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) [2022-11-21 16:35:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1249 transitions. [2022-11-21 16:35:57,890 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1249 transitions. Word has length 70 [2022-11-21 16:35:57,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:57,891 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1249 transitions. [2022-11-21 16:35:57,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 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) [2022-11-21 16:35:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1249 transitions. [2022-11-21 16:35:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-21 16:35:57,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:57,893 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:57,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:58,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:58,105 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:58,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash -247756884, now seen corresponding path program 1 times [2022-11-21 16:35:58,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:58,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310574307] [2022-11-21 16:35:58,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:58,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:58,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:58,107 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:58,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-21 16:35:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:58,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:35:58,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 16:35:58,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:35:58,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:58,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310574307] [2022-11-21 16:35:58,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310574307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:35:58,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:35:58,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:35:58,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783668320] [2022-11-21 16:35:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:35:58,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:35:58,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:58,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:35:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:35:58,286 INFO L87 Difference]: Start difference. First operand 893 states and 1249 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2022-11-21 16:35:58,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:35:58,866 INFO L93 Difference]: Finished difference Result 1317 states and 1812 transitions. [2022-11-21 16:35:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:35:58,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 70 [2022-11-21 16:35:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:35:58,871 INFO L225 Difference]: With dead ends: 1317 [2022-11-21 16:35:58,872 INFO L226 Difference]: Without dead ends: 1140 [2022-11-21 16:35:58,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:35:58,873 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 183 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:35:58,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 497 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 16:35:58,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-11-21 16:35:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 740. [2022-11-21 16:35:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 1.401894451962111) internal successors, (1036), 739 states have internal predecessors, (1036), 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) [2022-11-21 16:35:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1036 transitions. [2022-11-21 16:35:58,967 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1036 transitions. Word has length 70 [2022-11-21 16:35:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:35:58,967 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1036 transitions. [2022-11-21 16:35:58,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2022-11-21 16:35:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1036 transitions. [2022-11-21 16:35:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-21 16:35:58,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:35:58,969 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:35:58,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-21 16:35:59,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:59,181 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:35:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:35:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash 946149333, now seen corresponding path program 1 times [2022-11-21 16:35:59,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:35:59,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942712837] [2022-11-21 16:35:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:35:59,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:35:59,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:35:59,183 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:35:59,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-21 16:35:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:35:59,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:35:59,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:35:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 63 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 16:35:59,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:35:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 53 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 16:35:59,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:35:59,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942712837] [2022-11-21 16:35:59,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942712837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:35:59,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:35:59,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-21 16:35:59,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062643782] [2022-11-21 16:35:59,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:35:59,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:35:59,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:35:59,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:35:59,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:35:59,818 INFO L87 Difference]: Start difference. First operand 740 states and 1036 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2022-11-21 16:36:01,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:36:01,115 INFO L93 Difference]: Finished difference Result 2675 states and 3771 transitions. [2022-11-21 16:36:01,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:36:01,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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 72 [2022-11-21 16:36:01,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:36:01,127 INFO L225 Difference]: With dead ends: 2675 [2022-11-21 16:36:01,128 INFO L226 Difference]: Without dead ends: 1952 [2022-11-21 16:36:01,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:36:01,130 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 342 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:36:01,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 197 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 16:36:01,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2022-11-21 16:36:01,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1532. [2022-11-21 16:36:01,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 1.4225996080992815) internal successors, (2178), 1531 states have internal predecessors, (2178), 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) [2022-11-21 16:36:01,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2178 transitions. [2022-11-21 16:36:01,331 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2178 transitions. Word has length 72 [2022-11-21 16:36:01,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:36:01,331 INFO L495 AbstractCegarLoop]: Abstraction has 1532 states and 2178 transitions. [2022-11-21 16:36:01,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2022-11-21 16:36:01,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2178 transitions. [2022-11-21 16:36:01,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-21 16:36:01,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:36:01,334 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:36:01,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-21 16:36:01,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:01,547 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:36:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:36:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1135042114, now seen corresponding path program 1 times [2022-11-21 16:36:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:36:01,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768406345] [2022-11-21 16:36:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:36:01,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:36:01,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:36:01,550 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:36:01,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-21 16:36:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:36:01,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-21 16:36:01,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:36:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:06,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:36:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:36:10,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:36:10,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768406345] [2022-11-21 16:36:10,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768406345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:36:10,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:36:10,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2022-11-21 16:36:10,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117403121] [2022-11-21 16:36:10,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:36:10,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-21 16:36:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:36:10,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-21 16:36:10,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2022-11-21 16:36:10,659 INFO L87 Difference]: Start difference. First operand 1532 states and 2178 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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) [2022-11-21 16:37:27,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:37:27,009 INFO L93 Difference]: Finished difference Result 8647 states and 11483 transitions. [2022-11-21 16:37:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-11-21 16:37:27,010 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 74 [2022-11-21 16:37:27,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:37:27,037 INFO L225 Difference]: With dead ends: 8647 [2022-11-21 16:37:27,037 INFO L226 Difference]: Without dead ends: 7760 [2022-11-21 16:37:27,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18480 ImplicationChecksByTransitivity, 65.9s TimeCoverageRelationStatistics Valid=7680, Invalid=51126, Unknown=0, NotChecked=0, Total=58806 [2022-11-21 16:37:27,051 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 3011 mSDsluCounter, 15452 mSDsCounter, 0 mSdLazyCounter, 9091 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3011 SdHoareTripleChecker+Valid, 16169 SdHoareTripleChecker+Invalid, 9427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 9091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:37:27,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3011 Valid, 16169 Invalid, 9427 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [336 Valid, 9091 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2022-11-21 16:37:27,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2022-11-21 16:37:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 4199. [2022-11-21 16:37:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4199 states, 4198 states have (on average 1.4204383039542638) internal successors, (5963), 4198 states have internal predecessors, (5963), 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) [2022-11-21 16:37:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 5963 transitions. [2022-11-21 16:37:27,731 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 5963 transitions. Word has length 74 [2022-11-21 16:37:27,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:37:27,732 INFO L495 AbstractCegarLoop]: Abstraction has 4199 states and 5963 transitions. [2022-11-21 16:37:27,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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) [2022-11-21 16:37:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 5963 transitions. [2022-11-21 16:37:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-21 16:37:27,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:37:27,736 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:37:27,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-21 16:37:27,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:27,949 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:37:27,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:37:27,950 INFO L85 PathProgramCache]: Analyzing trace with hash -777616002, now seen corresponding path program 1 times [2022-11-21 16:37:27,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:37:27,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350407185] [2022-11-21 16:37:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:37:27,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:37:27,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:37:27,952 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:37:27,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-21 16:37:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:37:28,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-21 16:37:28,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:37:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:32,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:37:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:37:36,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:37:36,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350407185] [2022-11-21 16:37:36,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350407185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:37:36,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:37:36,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2022-11-21 16:37:36,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441024300] [2022-11-21 16:37:36,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:37:36,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-21 16:37:36,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:37:36,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-21 16:37:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1933, Unknown=0, NotChecked=0, Total=2070 [2022-11-21 16:37:36,736 INFO L87 Difference]: Start difference. First operand 4199 states and 5963 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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) [2022-11-21 16:38:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:38:13,977 INFO L93 Difference]: Finished difference Result 10135 states and 13775 transitions. [2022-11-21 16:38:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-21 16:38:13,978 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 74 [2022-11-21 16:38:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:38:14,003 INFO L225 Difference]: With dead ends: 10135 [2022-11-21 16:38:14,004 INFO L226 Difference]: Without dead ends: 8300 [2022-11-21 16:38:14,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5270 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=2685, Invalid=18777, Unknown=0, NotChecked=0, Total=21462 [2022-11-21 16:38:14,010 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1672 mSDsluCounter, 9368 mSDsCounter, 0 mSdLazyCounter, 5411 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 9854 SdHoareTripleChecker+Invalid, 5526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 5411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:38:14,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 9854 Invalid, 5526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 5411 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-21 16:38:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8300 states. [2022-11-21 16:38:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8300 to 4683. [2022-11-21 16:38:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4683 states, 4682 states have (on average 1.4235369500213584) internal successors, (6665), 4682 states have internal predecessors, (6665), 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) [2022-11-21 16:38:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 6665 transitions. [2022-11-21 16:38:14,592 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 6665 transitions. Word has length 74 [2022-11-21 16:38:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:38:14,592 INFO L495 AbstractCegarLoop]: Abstraction has 4683 states and 6665 transitions. [2022-11-21 16:38:14,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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) [2022-11-21 16:38:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 6665 transitions. [2022-11-21 16:38:14,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 16:38:14,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:38:14,604 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:14,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-21 16:38:14,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:38:14,816 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:38:14,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1420916641, now seen corresponding path program 1 times [2022-11-21 16:38:14,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:38:14,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77014402] [2022-11-21 16:38:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:14,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:38:14,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:38:14,818 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:38:14,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-21 16:38:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:14,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:38:14,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:15,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:38:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:15,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:38:15,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77014402] [2022-11-21 16:38:15,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77014402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:38:15,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:38:15,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-21 16:38:15,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045263308] [2022-11-21 16:38:15,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:38:15,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:38:15,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:38:15,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:38:15,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:38:15,367 INFO L87 Difference]: Start difference. First operand 4683 states and 6665 transitions. Second operand has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 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) [2022-11-21 16:38:17,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:38:17,639 INFO L93 Difference]: Finished difference Result 18051 states and 27684 transitions. [2022-11-21 16:38:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:38:17,640 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 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 76 [2022-11-21 16:38:17,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:38:17,666 INFO L225 Difference]: With dead ends: 18051 [2022-11-21 16:38:17,666 INFO L226 Difference]: Without dead ends: 9100 [2022-11-21 16:38:17,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:38:17,675 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 457 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:38:17,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 173 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 16:38:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9100 states. [2022-11-21 16:38:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9100 to 6200. [2022-11-21 16:38:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6200 states, 6199 states have (on average 1.2282626230037104) internal successors, (7614), 6199 states have internal predecessors, (7614), 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) [2022-11-21 16:38:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 7614 transitions. [2022-11-21 16:38:18,604 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 7614 transitions. Word has length 76 [2022-11-21 16:38:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:38:18,604 INFO L495 AbstractCegarLoop]: Abstraction has 6200 states and 7614 transitions. [2022-11-21 16:38:18,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 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) [2022-11-21 16:38:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 7614 transitions. [2022-11-21 16:38:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 16:38:18,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:38:18,606 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:18,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-21 16:38:18,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:38:18,807 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:38:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:18,807 INFO L85 PathProgramCache]: Analyzing trace with hash 881251465, now seen corresponding path program 1 times [2022-11-21 16:38:18,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:38:18,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246824386] [2022-11-21 16:38:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:18,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:38:18,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:38:18,808 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:38:18,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-21 16:38:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:18,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-21 16:38:18,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:24,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:38:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:30,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:38:30,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246824386] [2022-11-21 16:38:30,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246824386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:38:30,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:38:30,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-21 16:38:30,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926925254] [2022-11-21 16:38:30,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:38:30,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-21 16:38:30,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:38:30,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-21 16:38:30,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2022-11-21 16:38:30,817 INFO L87 Difference]: Start difference. First operand 6200 states and 7614 transitions. Second operand has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 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) [2022-11-21 16:39:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:33,175 INFO L93 Difference]: Finished difference Result 7925 states and 9591 transitions. [2022-11-21 16:39:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-11-21 16:39:33,176 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 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 77 [2022-11-21 16:39:33,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:33,189 INFO L225 Difference]: With dead ends: 7925 [2022-11-21 16:39:33,190 INFO L226 Difference]: Without dead ends: 7682 [2022-11-21 16:39:33,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9565 ImplicationChecksByTransitivity, 58.8s TimeCoverageRelationStatistics Valid=4344, Invalid=31566, Unknown=0, NotChecked=0, Total=35910 [2022-11-21 16:39:33,195 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 2780 mSDsluCounter, 7757 mSDsCounter, 0 mSdLazyCounter, 4485 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 8039 SdHoareTripleChecker+Invalid, 4751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 4485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:33,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2780 Valid, 8039 Invalid, 4751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [266 Valid, 4485 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-21 16:39:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7682 states. [2022-11-21 16:39:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7682 to 6826. [2022-11-21 16:39:34,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6826 states, 6825 states have (on average 1.2246153846153847) internal successors, (8358), 6825 states have internal predecessors, (8358), 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) [2022-11-21 16:39:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 8358 transitions. [2022-11-21 16:39:34,163 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 8358 transitions. Word has length 77 [2022-11-21 16:39:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:34,163 INFO L495 AbstractCegarLoop]: Abstraction has 6826 states and 8358 transitions. [2022-11-21 16:39:34,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 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) [2022-11-21 16:39:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 8358 transitions. [2022-11-21 16:39:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 16:39:34,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:34,165 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:34,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-21 16:39:34,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:34,366 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:39:34,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:34,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1269946569, now seen corresponding path program 2 times [2022-11-21 16:39:34,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:34,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137614737] [2022-11-21 16:39:34,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:39:34,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:34,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:34,367 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:39:34,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-21 16:39:34,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:39:34,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:39:34,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 16:39:34,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:39,813 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:39,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:45,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:45,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137614737] [2022-11-21 16:39:45,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137614737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:45,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:45,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-21 16:39:45,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034655156] [2022-11-21 16:39:45,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:45,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-21 16:39:45,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:45,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-21 16:39:45,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2267, Unknown=0, NotChecked=0, Total=2450 [2022-11-21 16:39:45,146 INFO L87 Difference]: Start difference. First operand 6826 states and 8358 transitions. Second operand has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 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) [2022-11-21 16:41:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:31,076 INFO L93 Difference]: Finished difference Result 10719 states and 12903 transitions. [2022-11-21 16:41:31,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-11-21 16:41:31,077 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 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 77 [2022-11-21 16:41:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:31,093 INFO L225 Difference]: With dead ends: 10719 [2022-11-21 16:41:31,093 INFO L226 Difference]: Without dead ends: 9845 [2022-11-21 16:41:31,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24583 ImplicationChecksByTransitivity, 98.4s TimeCoverageRelationStatistics Valid=8391, Invalid=64779, Unknown=0, NotChecked=0, Total=73170 [2022-11-21 16:41:31,100 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 3127 mSDsluCounter, 10628 mSDsCounter, 0 mSdLazyCounter, 5848 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3127 SdHoareTripleChecker+Valid, 11093 SdHoareTripleChecker+Invalid, 6206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 5848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:31,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3127 Valid, 11093 Invalid, 6206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [358 Valid, 5848 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-21 16:41:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9845 states. [2022-11-21 16:41:32,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9845 to 8035. [2022-11-21 16:41:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8035 states, 8034 states have (on average 1.2230520288772715) internal successors, (9826), 8034 states have internal predecessors, (9826), 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) [2022-11-21 16:41:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8035 states to 8035 states and 9826 transitions. [2022-11-21 16:41:32,333 INFO L78 Accepts]: Start accepts. Automaton has 8035 states and 9826 transitions. Word has length 77 [2022-11-21 16:41:32,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:32,333 INFO L495 AbstractCegarLoop]: Abstraction has 8035 states and 9826 transitions. [2022-11-21 16:41:32,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 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) [2022-11-21 16:41:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 8035 states and 9826 transitions. [2022-11-21 16:41:32,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 16:41:32,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:32,336 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:32,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-21 16:41:32,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:41:32,544 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:41:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1690097737, now seen corresponding path program 3 times [2022-11-21 16:41:32,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:41:32,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093254608] [2022-11-21 16:41:32,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:41:32,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:41:32,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:41:32,546 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:41:32,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-21 16:41:32,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-21 16:41:32,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:41:32,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 16:41:32,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:37,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:43,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:41:43,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093254608] [2022-11-21 16:41:43,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093254608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:43,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:41:43,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 49 [2022-11-21 16:41:43,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300315180] [2022-11-21 16:41:43,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:43,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-21 16:41:43,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:41:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-21 16:41:43,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2197, Unknown=0, NotChecked=0, Total=2352 [2022-11-21 16:41:43,023 INFO L87 Difference]: Start difference. First operand 8035 states and 9826 transitions. Second operand has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 49 states have internal predecessors, (152), 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) [2022-11-21 16:42:52,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:52,481 INFO L93 Difference]: Finished difference Result 12885 states and 15501 transitions. [2022-11-21 16:42:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-11-21 16:42:52,482 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 49 states have internal predecessors, (152), 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 77 [2022-11-21 16:42:52,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:52,499 INFO L225 Difference]: With dead ends: 12885 [2022-11-21 16:42:52,499 INFO L226 Difference]: Without dead ends: 10798 [2022-11-21 16:42:52,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11337 ImplicationChecksByTransitivity, 62.0s TimeCoverageRelationStatistics Valid=5949, Invalid=34653, Unknown=0, NotChecked=0, Total=40602 [2022-11-21 16:42:52,506 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 2608 mSDsluCounter, 10467 mSDsCounter, 0 mSdLazyCounter, 5664 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2608 SdHoareTripleChecker+Valid, 10897 SdHoareTripleChecker+Invalid, 6010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 5664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:42:52,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2608 Valid, 10897 Invalid, 6010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [346 Valid, 5664 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-11-21 16:42:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10798 states. [2022-11-21 16:42:53,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10798 to 8386. [2022-11-21 16:42:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8386 states, 8385 states have (on average 1.2212283840190816) internal successors, (10240), 8385 states have internal predecessors, (10240), 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) [2022-11-21 16:42:53,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8386 states to 8386 states and 10240 transitions. [2022-11-21 16:42:53,886 INFO L78 Accepts]: Start accepts. Automaton has 8386 states and 10240 transitions. Word has length 77 [2022-11-21 16:42:53,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:53,886 INFO L495 AbstractCegarLoop]: Abstraction has 8386 states and 10240 transitions. [2022-11-21 16:42:53,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 49 states have internal predecessors, (152), 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) [2022-11-21 16:42:53,886 INFO L276 IsEmpty]: Start isEmpty. Operand 8386 states and 10240 transitions. [2022-11-21 16:42:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 16:42:53,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:53,889 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:53,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-21 16:42:54,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:42:54,100 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:54,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:54,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1471420594, now seen corresponding path program 1 times [2022-11-21 16:42:54,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:42:54,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5616659] [2022-11-21 16:42:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:54,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:42:54,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:42:54,102 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:42:54,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-21 16:42:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:54,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:42:54,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 16:42:54,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:42:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 61 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 16:42:54,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:42:54,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5616659] [2022-11-21 16:42:54,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5616659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:42:54,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:42:54,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-21 16:42:54,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49905529] [2022-11-21 16:42:54,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:42:54,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:42:54,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:42:54,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:42:54,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:42:54,645 INFO L87 Difference]: Start difference. First operand 8386 states and 10240 transitions. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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) [2022-11-21 16:42:59,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:59,308 INFO L93 Difference]: Finished difference Result 20230 states and 25071 transitions. [2022-11-21 16:42:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:42:59,311 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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 78 [2022-11-21 16:42:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:59,328 INFO L225 Difference]: With dead ends: 20230 [2022-11-21 16:42:59,328 INFO L226 Difference]: Without dead ends: 11303 [2022-11-21 16:42:59,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=268, Invalid=1064, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 16:42:59,334 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 721 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:42:59,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 473 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 16:42:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11303 states. [2022-11-21 16:43:01,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11303 to 8743. [2022-11-21 16:43:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8743 states, 8742 states have (on average 1.1954930221917182) internal successors, (10451), 8742 states have internal predecessors, (10451), 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) [2022-11-21 16:43:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8743 states to 8743 states and 10451 transitions. [2022-11-21 16:43:01,313 INFO L78 Accepts]: Start accepts. Automaton has 8743 states and 10451 transitions. Word has length 78 [2022-11-21 16:43:01,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:43:01,313 INFO L495 AbstractCegarLoop]: Abstraction has 8743 states and 10451 transitions. [2022-11-21 16:43:01,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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) [2022-11-21 16:43:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 8743 states and 10451 transitions. [2022-11-21 16:43:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 16:43:01,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:43:01,316 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:43:01,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-21 16:43:01,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:43:01,527 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:43:01,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:01,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1794630633, now seen corresponding path program 1 times [2022-11-21 16:43:01,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:43:01,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725721770] [2022-11-21 16:43:01,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:01,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:43:01,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:43:01,530 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:43:01,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-21 16:43:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:01,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-21 16:43:01,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:43:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:43:07,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:43:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:43:13,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:43:13,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725721770] [2022-11-21 16:43:13,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725721770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:43:13,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:43:13,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-21 16:43:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237844489] [2022-11-21 16:43:13,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:43:13,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-21 16:43:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:43:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-21 16:43:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2285, Unknown=0, NotChecked=0, Total=2450 [2022-11-21 16:43:13,966 INFO L87 Difference]: Start difference. First operand 8743 states and 10451 transitions. Second operand has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 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) [2022-11-21 16:45:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:14,462 INFO L93 Difference]: Finished difference Result 15334 states and 18106 transitions. [2022-11-21 16:45:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-11-21 16:45:14,463 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 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 80 [2022-11-21 16:45:14,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:14,476 INFO L225 Difference]: With dead ends: 15334 [2022-11-21 16:45:14,476 INFO L226 Difference]: Without dead ends: 15133 [2022-11-21 16:45:14,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22124 ImplicationChecksByTransitivity, 108.1s TimeCoverageRelationStatistics Valid=6705, Invalid=60117, Unknown=0, NotChecked=0, Total=66822 [2022-11-21 16:45:14,483 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 2784 mSDsluCounter, 12956 mSDsCounter, 0 mSdLazyCounter, 7505 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2784 SdHoareTripleChecker+Valid, 13419 SdHoareTripleChecker+Invalid, 7909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 7505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:14,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2784 Valid, 13419 Invalid, 7909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [404 Valid, 7505 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2022-11-21 16:45:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15133 states. [2022-11-21 16:45:16,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15133 to 9631. [2022-11-21 16:45:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9631 states, 9630 states have (on average 1.187331256490135) internal successors, (11434), 9630 states have internal predecessors, (11434), 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) [2022-11-21 16:45:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9631 states to 9631 states and 11434 transitions. [2022-11-21 16:45:16,437 INFO L78 Accepts]: Start accepts. Automaton has 9631 states and 11434 transitions. Word has length 80 [2022-11-21 16:45:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:16,438 INFO L495 AbstractCegarLoop]: Abstraction has 9631 states and 11434 transitions. [2022-11-21 16:45:16,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 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) [2022-11-21 16:45:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 9631 states and 11434 transitions. [2022-11-21 16:45:16,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 16:45:16,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:16,441 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:16,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-21 16:45:16,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:45:16,655 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:45:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:16,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1519845463, now seen corresponding path program 2 times [2022-11-21 16:45:16,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:45:16,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864819079] [2022-11-21 16:45:16,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:45:16,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:45:16,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:45:16,657 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:45:16,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-21 16:45:16,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:45:16,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:45:16,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 16:45:16,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:22,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:45:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:29,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:45:29,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864819079] [2022-11-21 16:45:29,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864819079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:45:29,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:45:29,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-21 16:45:29,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700070521] [2022-11-21 16:45:29,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:45:29,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-21 16:45:29,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:45:29,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-21 16:45:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2289, Unknown=0, NotChecked=0, Total=2450 [2022-11-21 16:45:29,759 INFO L87 Difference]: Start difference. First operand 9631 states and 11434 transitions. Second operand has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 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) [2022-11-21 16:48:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:01,549 INFO L93 Difference]: Finished difference Result 21978 states and 25714 transitions. [2022-11-21 16:48:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-11-21 16:48:01,549 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 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 80 [2022-11-21 16:48:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:01,574 INFO L225 Difference]: With dead ends: 21978 [2022-11-21 16:48:01,574 INFO L226 Difference]: Without dead ends: 19856 [2022-11-21 16:48:01,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24491 ImplicationChecksByTransitivity, 127.9s TimeCoverageRelationStatistics Valid=6285, Invalid=66345, Unknown=0, NotChecked=0, Total=72630 [2022-11-21 16:48:01,584 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 2540 mSDsluCounter, 18158 mSDsCounter, 0 mSdLazyCounter, 10579 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 18850 SdHoareTripleChecker+Invalid, 10980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 10579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:01,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 18850 Invalid, 10980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [401 Valid, 10579 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2022-11-21 16:48:01,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19856 states. [2022-11-21 16:48:04,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19856 to 10505. [2022-11-21 16:48:04,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10505 states, 10504 states have (on average 1.1828827113480578) internal successors, (12425), 10504 states have internal predecessors, (12425), 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) [2022-11-21 16:48:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10505 states to 10505 states and 12425 transitions. [2022-11-21 16:48:04,266 INFO L78 Accepts]: Start accepts. Automaton has 10505 states and 12425 transitions. Word has length 80 [2022-11-21 16:48:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:48:04,267 INFO L495 AbstractCegarLoop]: Abstraction has 10505 states and 12425 transitions. [2022-11-21 16:48:04,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 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) [2022-11-21 16:48:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 10505 states and 12425 transitions. [2022-11-21 16:48:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 16:48:04,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:48:04,270 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:04,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-21 16:48:04,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:48:04,481 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:48:04,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:04,482 INFO L85 PathProgramCache]: Analyzing trace with hash -825823845, now seen corresponding path program 3 times [2022-11-21 16:48:04,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:48:04,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921078404] [2022-11-21 16:48:04,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:48:04,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:48:04,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:48:04,484 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:48:04,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc07f440-d3f8-4e35-89c1-513ac6d226b6/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-21 16:48:04,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-21 16:48:04,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:48:04,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 16:48:04,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:48:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:11,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:48:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:48:18,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:48:18,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921078404] [2022-11-21 16:48:18,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921078404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:48:18,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:48:18,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-21 16:48:18,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627906710] [2022-11-21 16:48:18,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:48:18,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-21 16:48:18,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:48:18,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-21 16:48:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2284, Unknown=0, NotChecked=0, Total=2450 [2022-11-21 16:48:18,898 INFO L87 Difference]: Start difference. First operand 10505 states and 12425 transitions. Second operand has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 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)