./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro --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 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 --- 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-8393723 [2022-11-18 19:31:43,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:31:43,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:31:43,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:31:43,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:31:43,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:31:43,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:31:43,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:31:43,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:31:43,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:31:43,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:31:43,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:31:43,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:31:43,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:31:43,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:31:43,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:31:43,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:31:43,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:31:43,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:31:43,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:31:43,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:31:43,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:31:43,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:31:43,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:31:43,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:31:43,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:31:43,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:31:43,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:31:43,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:31:43,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:31:43,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:31:43,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:31:43,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:31:43,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:31:43,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:31:43,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:31:43,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:31:43,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:31:43,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:31:43,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:31:43,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:31:43,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:31:43,820 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:31:43,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:31:43,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:31:43,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:31:43,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:31:43,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:31:43,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:31:43,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:31:43,823 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:31:43,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:31:43,824 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:31:43,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:31:43,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:31:43,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:31:43,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:31:43,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:31:43,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:31:43,825 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:31:43,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:31:43,826 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:31:43,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:31:43,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:31:43,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:31:43,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:31:43,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:43,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:31:43,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:31:43,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:31:43,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:31:43,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:31:43,829 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:31:43,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:31:43,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:31:43,830 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_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2022-11-18 19:31:44,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:31:44,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:31:44,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:31:44,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:31:44,077 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:31:44,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2022-11-18 19:31:44,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/data/12110c0a1/031e5ed41bb041a7a4d980cd7ae64ae3/FLAGcbfb857de [2022-11-18 19:31:44,633 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:31:44,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2022-11-18 19:31:44,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/data/12110c0a1/031e5ed41bb041a7a4d980cd7ae64ae3/FLAGcbfb857de [2022-11-18 19:31:45,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/data/12110c0a1/031e5ed41bb041a7a4d980cd7ae64ae3 [2022-11-18 19:31:45,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:31:45,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:31:45,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:45,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:31:45,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:31:45,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f3c0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45, skipping insertion in model container [2022-11-18 19:31:45,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:31:45,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:31:45,329 WARN L234 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_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2022-11-18 19:31:45,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:45,346 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:31:45,358 WARN L234 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_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2022-11-18 19:31:45,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:45,370 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:31:45,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45 WrapperNode [2022-11-18 19:31:45,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:45,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:45,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:31:45,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:31:45,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,399 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2022-11-18 19:31:45,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:45,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:31:45,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:31:45,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:31:45,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,414 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:31:45,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:31:45,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:31:45,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:31:45,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (1/1) ... [2022-11-18 19:31:45,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:45,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:45,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:45,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:31:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:31:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2022-11-18 19:31:45,496 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2022-11-18 19:31:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:31:45,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:31:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:31:45,549 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:31:45,551 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:31:45,713 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:31:45,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:31:45,719 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:31:45,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:45 BoogieIcfgContainer [2022-11-18 19:31:45,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:31:45,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:31:45,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:31:45,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:31:45,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:45" (1/3) ... [2022-11-18 19:31:45,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35243e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:45, skipping insertion in model container [2022-11-18 19:31:45,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:45" (2/3) ... [2022-11-18 19:31:45,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35243e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:45, skipping insertion in model container [2022-11-18 19:31:45,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:45" (3/3) ... [2022-11-18 19:31:45,729 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2022-11-18 19:31:45,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:31:45,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:31:45,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:31:45,804 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;@22a0d327, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:31:45,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:31:45,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:31:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:31:45,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:45,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:45,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2022-11-18 19:31:45,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:45,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179972490] [2022-11-18 19:31:45,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:45,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:45,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:31:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:31:45,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:31:45,977 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:31:45,979 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 19:31:45,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:31:45,991 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-18 19:31:45,998 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:31:46,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:31:46 BoogieIcfgContainer [2022-11-18 19:31:46,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:31:46,031 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:31:46,031 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:31:46,031 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:31:46,032 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:45" (3/4) ... [2022-11-18 19:31:46,036 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 19:31:46,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:31:46,039 INFO L158 Benchmark]: Toolchain (without parser) took 921.33ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 47.2MB in the end (delta: 19.2MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2022-11-18 19:31:46,040 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 98.6MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:31:46,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.01ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 73.9MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:31:46,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.62ms. Allocated memory is still 98.6MB. Free memory was 73.9MB in the beginning and 72.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:31:46,043 INFO L158 Benchmark]: Boogie Preprocessor took 15.94ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 71.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:31:46,048 INFO L158 Benchmark]: RCFGBuilder took 304.91ms. Allocated memory is still 98.6MB. Free memory was 71.5MB in the beginning and 61.8MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:31:46,049 INFO L158 Benchmark]: TraceAbstraction took 305.81ms. Allocated memory is still 98.6MB. Free memory was 61.5MB in the beginning and 47.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-18 19:31:46,050 INFO L158 Benchmark]: Witness Printer took 5.95ms. Allocated memory is still 98.6MB. Free memory was 47.5MB in the beginning and 47.2MB in the end (delta: 362.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:31:46,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 98.6MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.01ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 73.9MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.62ms. Allocated memory is still 98.6MB. Free memory was 73.9MB in the beginning and 72.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.94ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 71.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 304.91ms. Allocated memory is still 98.6MB. Free memory was 71.5MB in the beginning and 61.8MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 305.81ms. Allocated memory is still 98.6MB. Free memory was 61.5MB in the beginning and 47.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.95ms. Allocated memory is still 98.6MB. Free memory was 47.5MB in the beginning and 47.2MB in the end (delta: 362.2kB). 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: 36]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 33. Possible FailurePath: [L27] int n = __VERIFIER_nondet_int(); [L28] COND FALSE !(n < 1) VAL [n=1] [L31] CALL, EXPR hanoi(n) VAL [\old(n)=1] [L19] COND TRUE n == 1 [L20] return 1; VAL [\old(n)=1, \result=1, n=1] [L31] RET, EXPR hanoi(n) VAL [hanoi(n)=1, n=1] [L31] unsigned result = hanoi(n); [L33] COND FALSE !(result+1>0 && result+1 == 1< main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro 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 -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2022-11-18 19:31:48,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:31:48,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:31:48,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:31:48,940 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:31:48,941 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:31:48,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2022-11-18 19:31:49,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/data/5905ca1b4/ac87f43a648043c5ac68bcc4d348ba0f/FLAG3077b70b9 [2022-11-18 19:31:49,486 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:31:49,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2022-11-18 19:31:49,497 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/data/5905ca1b4/ac87f43a648043c5ac68bcc4d348ba0f/FLAG3077b70b9 [2022-11-18 19:31:49,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/data/5905ca1b4/ac87f43a648043c5ac68bcc4d348ba0f [2022-11-18 19:31:49,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:31:49,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:31:49,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:49,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:31:49,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:31:49,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:49" (1/1) ... [2022-11-18 19:31:49,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dec59c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:49, skipping insertion in model container [2022-11-18 19:31:49,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:49" (1/1) ... [2022-11-18 19:31:49,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:31:49,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:31:50,087 WARN L234 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_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2022-11-18 19:31:50,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:50,106 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:31:50,131 WARN L234 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_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2022-11-18 19:31:50,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:50,168 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:31:50,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50 WrapperNode [2022-11-18 19:31:50,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:50,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:50,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:31:50,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:31:50,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,224 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-11-18 19:31:50,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:50,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:31:50,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:31:50,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:31:50,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,259 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:31:50,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:31:50,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:31:50,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:31:50,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (1/1) ... [2022-11-18 19:31:50,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:50,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:50,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:50,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:31:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:31:50,346 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2022-11-18 19:31:50,346 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2022-11-18 19:31:50,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:31:50,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:31:50,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 19:31:50,435 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:31:50,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:31:50,614 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:31:50,620 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:31:50,620 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:31:50,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:50 BoogieIcfgContainer [2022-11-18 19:31:50,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:31:50,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:31:50,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:31:50,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:31:50,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:49" (1/3) ... [2022-11-18 19:31:50,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672f91d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:50, skipping insertion in model container [2022-11-18 19:31:50,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:50" (2/3) ... [2022-11-18 19:31:50,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672f91d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:50, skipping insertion in model container [2022-11-18 19:31:50,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:50" (3/3) ... [2022-11-18 19:31:50,630 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2022-11-18 19:31:50,648 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:31:50,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:31:50,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:31:50,704 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;@3b424802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:31:50,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:31:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:31:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:31:50,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:50,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:50,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2022-11-18 19:31:50,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:31:50,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761110368] [2022-11-18 19:31:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:50,736 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 [2022-11-18 19:31:50,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:31:50,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:31:50,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:31:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:50,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:31:50,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:51,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:31:51,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:31:51,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761110368] [2022-11-18 19:31:51,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761110368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:51,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:51,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:31:51,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649804594] [2022-11-18 19:31:51,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:51,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:31:51,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:31:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:31:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:31:51,219 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:31:51,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:51,324 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-11-18 19:31:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:31:51,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-18 19:31:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:51,335 INFO L225 Difference]: With dead ends: 32 [2022-11-18 19:31:51,335 INFO L226 Difference]: Without dead ends: 16 [2022-11-18 19:31:51,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:31:51,341 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:51,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:31:51,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-18 19:31:51,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-18 19:31:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:31:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-18 19:31:51,386 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-11-18 19:31:51,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:51,387 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-18 19:31:51,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:31:51,387 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-18 19:31:51,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:31:51,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:51,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:51,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:31:51,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:31:51,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:51,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2053638732, now seen corresponding path program 1 times [2022-11-18 19:31:51,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:31:51,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178785781] [2022-11-18 19:31:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:51,603 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 [2022-11-18 19:31:51,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:31:51,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:31:51,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:31:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:51,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:31:51,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:31:51,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:31:52,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:31:52,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178785781] [2022-11-18 19:31:52,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178785781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:52,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:31:52,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 19:31:52,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141242896] [2022-11-18 19:31:52,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:52,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:31:52,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:31:52,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:31:52,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:31:52,637 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:31:53,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:53,105 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-18 19:31:53,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:31:53,106 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17 [2022-11-18 19:31:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:53,107 INFO L225 Difference]: With dead ends: 28 [2022-11-18 19:31:53,107 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 19:31:53,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:31:53,109 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:53,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 61 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 6 Unchecked, 0.2s Time] [2022-11-18 19:31:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 19:31:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-18 19:31:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:31:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-18 19:31:53,116 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2022-11-18 19:31:53,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:53,117 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-18 19:31:53,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:31:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-18 19:31:53,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:31:53,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:53,119 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:53,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:31:53,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:31:53,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:53,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:53,331 INFO L85 PathProgramCache]: Analyzing trace with hash -491101836, now seen corresponding path program 2 times [2022-11-18 19:31:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:31:53,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222944383] [2022-11-18 19:31:53,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:31:53,332 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 [2022-11-18 19:31:53,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:31:53,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:31:53,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:31:53,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:31:53,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:31:53,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:31:53,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:31:53,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:31:55,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:31:55,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222944383] [2022-11-18 19:31:55,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222944383] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:55,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:31:55,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2022-11-18 19:31:55,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382750008] [2022-11-18 19:31:55,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:55,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:31:55,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:31:55,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:31:55,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:31:55,229 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-18 19:31:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:31:56,198 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-18 19:31:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:31:56,199 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 29 [2022-11-18 19:31:56,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:31:56,201 INFO L225 Difference]: With dead ends: 34 [2022-11-18 19:31:56,202 INFO L226 Difference]: Without dead ends: 28 [2022-11-18 19:31:56,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=177, Invalid=1229, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:31:56,204 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 38 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:31:56,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 124 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 171 Invalid, 0 Unknown, 70 Unchecked, 0.3s Time] [2022-11-18 19:31:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-18 19:31:56,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-18 19:31:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:31:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-18 19:31:56,211 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 29 [2022-11-18 19:31:56,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:31:56,212 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-18 19:31:56,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-18 19:31:56,212 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-18 19:31:56,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 19:31:56,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:31:56,214 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:31:56,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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)] Ended with exit code 0 [2022-11-18 19:31:56,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:31:56,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:31:56,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash -492655308, now seen corresponding path program 3 times [2022-11-18 19:31:56,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:31:56,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426869998] [2022-11-18 19:31:56,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:31:56,427 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 [2022-11-18 19:31:56,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:31:56,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:31:56,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:31:56,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:31:56,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:31:56,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 19:31:56,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:31:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 19:31:56,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:31:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:31:59,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:31:59,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426869998] [2022-11-18 19:31:59,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426869998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:31:59,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:31:59,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 36 [2022-11-18 19:31:59,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369049247] [2022-11-18 19:31:59,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:31:59,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:31:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:31:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:31:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:31:59,564 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-18 19:32:00,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:00,479 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-11-18 19:32:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:32:00,480 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) Word has length 41 [2022-11-18 19:32:00,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:00,481 INFO L225 Difference]: With dead ends: 40 [2022-11-18 19:32:00,481 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 19:32:00,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=290, Invalid=2260, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 19:32:00,484 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:00,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 185 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 194 Invalid, 0 Unknown, 155 Unchecked, 0.2s Time] [2022-11-18 19:32:00,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 19:32:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-18 19:32:00,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:32:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-11-18 19:32:00,495 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 41 [2022-11-18 19:32:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:00,495 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-11-18 19:32:00,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-18 19:32:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-11-18 19:32:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:32:00,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:00,500 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:00,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:00,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:00,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:00,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1906255628, now seen corresponding path program 4 times [2022-11-18 19:32:00,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:32:00,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227808244] [2022-11-18 19:32:00,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:32:00,714 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 [2022-11-18 19:32:00,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:32:00,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:32:00,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:00,777 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:32:00,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:00,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 19:32:00,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-18 19:32:01,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:32:05,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:32:05,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227808244] [2022-11-18 19:32:05,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227808244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:05,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:32:05,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 46 [2022-11-18 19:32:05,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438087757] [2022-11-18 19:32:05,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:05,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 19:32:05,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:32:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 19:32:05,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1913, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 19:32:05,740 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-18 19:32:07,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:07,051 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-11-18 19:32:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:32:07,052 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) Word has length 53 [2022-11-18 19:32:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:07,054 INFO L225 Difference]: With dead ends: 46 [2022-11-18 19:32:07,054 INFO L226 Difference]: Without dead ends: 40 [2022-11-18 19:32:07,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=414, Invalid=3746, Unknown=0, NotChecked=0, Total=4160 [2022-11-18 19:32:07,060 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:07,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 299 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 338 Invalid, 0 Unknown, 289 Unchecked, 0.4s Time] [2022-11-18 19:32:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-18 19:32:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-18 19:32:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 19:32:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-11-18 19:32:07,067 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 53 [2022-11-18 19:32:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:07,068 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-11-18 19:32:07,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-18 19:32:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-11-18 19:32:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:32:07,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:07,075 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:07,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:07,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:07,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:07,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:07,289 INFO L85 PathProgramCache]: Analyzing trace with hash 788849844, now seen corresponding path program 5 times [2022-11-18 19:32:07,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:32:07,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324930963] [2022-11-18 19:32:07,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:32:07,290 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 [2022-11-18 19:32:07,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:32:07,291 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:32:07,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:07,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-18 19:32:07,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:07,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 19:32:07,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 19:32:08,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 19:32:14,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:32:14,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324930963] [2022-11-18 19:32:14,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324930963] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:14,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:32:14,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33] total 56 [2022-11-18 19:32:14,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861717542] [2022-11-18 19:32:14,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:14,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 19:32:14,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:32:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 19:32:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2885, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 19:32:14,144 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-18 19:32:15,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:15,801 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2022-11-18 19:32:15,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:32:15,807 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) Word has length 65 [2022-11-18 19:32:15,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:15,809 INFO L225 Difference]: With dead ends: 52 [2022-11-18 19:32:15,810 INFO L226 Difference]: Without dead ends: 46 [2022-11-18 19:32:15,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=554, Invalid=5608, Unknown=0, NotChecked=0, Total=6162 [2022-11-18 19:32:15,816 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 126 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 456 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:15,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 364 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 370 Invalid, 0 Unknown, 456 Unchecked, 0.4s Time] [2022-11-18 19:32:15,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-18 19:32:15,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-18 19:32:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 19:32:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2022-11-18 19:32:15,825 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 65 [2022-11-18 19:32:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:15,826 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2022-11-18 19:32:15,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-18 19:32:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2022-11-18 19:32:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:32:15,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:15,828 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:15,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:16,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:16,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:16,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1302253684, now seen corresponding path program 6 times [2022-11-18 19:32:16,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:32:16,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246385647] [2022-11-18 19:32:16,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:32:16,035 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 [2022-11-18 19:32:16,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:32:16,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:32:16,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:16,126 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-11-18 19:32:16,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:16,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 19:32:16,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-18 19:32:16,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 19:32:25,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:32:25,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246385647] [2022-11-18 19:32:25,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246385647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:25,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:32:25,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 39] total 66 [2022-11-18 19:32:25,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142054457] [2022-11-18 19:32:25,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:25,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-18 19:32:25,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:32:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-18 19:32:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=4057, Unknown=0, NotChecked=0, Total=4290 [2022-11-18 19:32:25,121 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) [2022-11-18 19:32:27,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:27,336 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2022-11-18 19:32:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:32:27,338 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) Word has length 77 [2022-11-18 19:32:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:27,340 INFO L225 Difference]: With dead ends: 58 [2022-11-18 19:32:27,340 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 19:32:27,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=710, Invalid=7846, Unknown=0, NotChecked=0, Total=8556 [2022-11-18 19:32:27,343 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 650 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:27,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 647 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 629 Invalid, 0 Unknown, 650 Unchecked, 0.5s Time] [2022-11-18 19:32:27,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 19:32:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-18 19:32:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:32:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2022-11-18 19:32:27,351 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 77 [2022-11-18 19:32:27,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:27,351 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2022-11-18 19:32:27,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) [2022-11-18 19:32:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2022-11-18 19:32:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:32:27,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:27,353 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:27,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:27,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:27,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1287742412, now seen corresponding path program 7 times [2022-11-18 19:32:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:32:27,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852183038] [2022-11-18 19:32:27,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:32:27,563 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 [2022-11-18 19:32:27,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:32:27,565 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:32:27,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:27,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 19:32:27,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-18 19:32:28,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-18 19:32:39,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:32:39,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852183038] [2022-11-18 19:32:39,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852183038] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:39,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:32:39,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 45] total 76 [2022-11-18 19:32:39,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374216298] [2022-11-18 19:32:39,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:39,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-11-18 19:32:39,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:32:39,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-11-18 19:32:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=5429, Unknown=0, NotChecked=0, Total=5700 [2022-11-18 19:32:39,278 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) [2022-11-18 19:32:41,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:32:41,856 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2022-11-18 19:32:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 19:32:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) Word has length 89 [2022-11-18 19:32:41,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:32:41,858 INFO L225 Difference]: With dead ends: 64 [2022-11-18 19:32:41,859 INFO L226 Difference]: Without dead ends: 58 [2022-11-18 19:32:41,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=882, Invalid=10460, Unknown=0, NotChecked=0, Total=11342 [2022-11-18 19:32:41,862 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 212 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 792 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:32:41,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 774 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 710 Invalid, 0 Unknown, 792 Unchecked, 0.6s Time] [2022-11-18 19:32:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-18 19:32:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-18 19:32:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 40 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 19:32:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2022-11-18 19:32:41,874 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 89 [2022-11-18 19:32:41,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:32:41,875 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2022-11-18 19:32:41,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) [2022-11-18 19:32:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2022-11-18 19:32:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 19:32:41,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:41,877 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:41,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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)] Ended with exit code 0 [2022-11-18 19:32:42,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:42,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:42,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1760839668, now seen corresponding path program 8 times [2022-11-18 19:32:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:32:42,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939051833] [2022-11-18 19:32:42,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:32:42,087 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 [2022-11-18 19:32:42,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:32:42,088 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:32:42,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:32:42,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:32:42,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:42,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-18 19:32:42,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-18 19:32:43,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-18 19:32:56,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:32:56,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939051833] [2022-11-18 19:32:56,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939051833] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:56,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:32:56,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 51] total 86 [2022-11-18 19:32:56,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884589621] [2022-11-18 19:32:56,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:56,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-11-18 19:32:56,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:32:56,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-11-18 19:32:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=7001, Unknown=0, NotChecked=0, Total=7310 [2022-11-18 19:32:56,981 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) [2022-11-18 19:33:00,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:00,062 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2022-11-18 19:33:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 19:33:00,063 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) Word has length 101 [2022-11-18 19:33:00,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:00,065 INFO L225 Difference]: With dead ends: 70 [2022-11-18 19:33:00,065 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 19:33:00,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=1070, Invalid=13450, Unknown=0, NotChecked=0, Total=14520 [2022-11-18 19:33:00,069 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 221 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1169 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:00,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 885 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 800 Invalid, 0 Unknown, 1169 Unchecked, 0.7s Time] [2022-11-18 19:33:00,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 19:33:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-18 19:33:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 44 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (19), 18 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:33:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-11-18 19:33:00,077 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 101 [2022-11-18 19:33:00,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:00,077 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-11-18 19:33:00,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) [2022-11-18 19:33:00,078 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-11-18 19:33:00,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 19:33:00,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:00,079 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:00,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:33:00,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:33:00,290 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:00,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1211116620, now seen corresponding path program 9 times [2022-11-18 19:33:00,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:33:00,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008053586] [2022-11-18 19:33:00,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:33:00,291 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 [2022-11-18 19:33:00,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:33:00,292 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:33:00,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:33:00,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-11-18 19:33:00,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:00,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-18 19:33:00,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-11-18 19:33:01,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-18 19:33:18,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:33:18,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008053586] [2022-11-18 19:33:18,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008053586] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:18,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:33:18,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 57] total 96 [2022-11-18 19:33:18,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302146893] [2022-11-18 19:33:18,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:18,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-18 19:33:18,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:33:18,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-18 19:33:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=8773, Unknown=0, NotChecked=0, Total=9120 [2022-11-18 19:33:18,178 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) [2022-11-18 19:33:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:21,160 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2022-11-18 19:33:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 19:33:21,161 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) Word has length 113 [2022-11-18 19:33:21,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:21,163 INFO L225 Difference]: With dead ends: 71 [2022-11-18 19:33:21,163 INFO L226 Difference]: Without dead ends: 67 [2022-11-18 19:33:21,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2227 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=1185, Invalid=15845, Unknown=0, NotChecked=0, Total=17030 [2022-11-18 19:33:21,166 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 651 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1314 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:21,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1183 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1012 Invalid, 0 Unknown, 1314 Unchecked, 0.8s Time] [2022-11-18 19:33:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-18 19:33:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-18 19:33:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 46 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (20), 19 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-18 19:33:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2022-11-18 19:33:21,174 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 113 [2022-11-18 19:33:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:21,175 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2022-11-18 19:33:21,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) [2022-11-18 19:33:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2022-11-18 19:33:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-18 19:33:21,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:21,177 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:21,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:33:21,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:33:21,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:21,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:21,390 INFO L85 PathProgramCache]: Analyzing trace with hash 79612228, now seen corresponding path program 10 times [2022-11-18 19:33:21,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:33:21,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770849566] [2022-11-18 19:33:21,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:33:21,390 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 [2022-11-18 19:33:21,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:33:21,391 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:33:21,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:33:21,539 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:33:21,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:21,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-18 19:33:21,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-18 19:33:23,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 819 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-18 19:33:40,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:33:40,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770849566] [2022-11-18 19:33:40,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770849566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:40,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:33:40,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 60] total 101 [2022-11-18 19:33:40,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882925824] [2022-11-18 19:33:40,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:40,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-11-18 19:33:40,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:33:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-11-18 19:33:40,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=9734, Unknown=0, NotChecked=0, Total=10100 [2022-11-18 19:33:40,816 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 101 states, 100 states have (on average 1.24) internal successors, (124), 63 states have internal predecessors, (124), 21 states have call successors, (21), 1 states have call predecessors, (21), 38 states have return successors, (38), 38 states have call predecessors, (38), 21 states have call successors, (38) [2022-11-18 19:33:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:49,140 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-11-18 19:33:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 19:33:49,141 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.24) internal successors, (124), 63 states have internal predecessors, (124), 21 states have call successors, (21), 1 states have call predecessors, (21), 38 states have return successors, (38), 38 states have call predecessors, (38), 21 states have call successors, (38) Word has length 119 [2022-11-18 19:33:49,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:49,143 INFO L225 Difference]: With dead ends: 79 [2022-11-18 19:33:49,143 INFO L226 Difference]: Without dead ends: 73 [2022-11-18 19:33:49,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2676 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=1011, Invalid=19295, Unknown=0, NotChecked=0, Total=20306 [2022-11-18 19:33:49,146 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 387 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1179 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:49,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1339 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1118 Invalid, 0 Unknown, 1179 Unchecked, 0.9s Time] [2022-11-18 19:33:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-18 19:33:49,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-18 19:33:49,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 50 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (22), 21 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 19:33:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-11-18 19:33:49,158 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 119 [2022-11-18 19:33:49,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:49,158 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-11-18 19:33:49,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 1.24) internal successors, (124), 63 states have internal predecessors, (124), 21 states have call successors, (21), 1 states have call predecessors, (21), 38 states have return successors, (38), 38 states have call predecessors, (38), 21 states have call successors, (38) [2022-11-18 19:33:49,159 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-11-18 19:33:49,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 19:33:49,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:49,162 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:49,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:33:49,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:33:49,374 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash 720478468, now seen corresponding path program 11 times [2022-11-18 19:33:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:33:49,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419286178] [2022-11-18 19:33:49,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:33:49,375 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 [2022-11-18 19:33:49,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:33:49,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:33:49,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:33:49,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-11-18 19:33:49,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:49,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-18 19:33:49,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2022-11-18 19:33:51,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1010 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-18 19:34:12,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:34:12,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419286178] [2022-11-18 19:34:12,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419286178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:12,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:34:12,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 66] total 111 [2022-11-18 19:34:12,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235951338] [2022-11-18 19:34:12,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:12,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-11-18 19:34:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:34:12,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-11-18 19:34:12,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=11806, Unknown=0, NotChecked=0, Total=12210 [2022-11-18 19:34:12,579 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 111 states, 110 states have (on average 1.2363636363636363) internal successors, (136), 69 states have internal predecessors, (136), 23 states have call successors, (23), 1 states have call predecessors, (23), 42 states have return successors, (42), 42 states have call predecessors, (42), 23 states have call successors, (42) [2022-11-18 19:34:16,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:16,355 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2022-11-18 19:34:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 19:34:16,356 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 1.2363636363636363) internal successors, (136), 69 states have internal predecessors, (136), 23 states have call successors, (23), 1 states have call predecessors, (23), 42 states have return successors, (42), 42 states have call predecessors, (42), 23 states have call successors, (42) Word has length 131 [2022-11-18 19:34:16,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:16,357 INFO L225 Difference]: With dead ends: 80 [2022-11-18 19:34:16,357 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 19:34:16,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3007 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=1509, Invalid=21443, Unknown=0, NotChecked=0, Total=22952 [2022-11-18 19:34:16,360 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 137 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1798 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:16,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1626 Invalid, 3253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1409 Invalid, 0 Unknown, 1798 Unchecked, 0.9s Time] [2022-11-18 19:34:16,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 19:34:16,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-18 19:34:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 52 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (23), 22 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-18 19:34:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-11-18 19:34:16,368 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 131 [2022-11-18 19:34:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:16,369 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-11-18 19:34:16,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 1.2363636363636363) internal successors, (136), 69 states have internal predecessors, (136), 23 states have call successors, (23), 1 states have call predecessors, (23), 42 states have return successors, (42), 42 states have call predecessors, (42), 23 states have call successors, (42) [2022-11-18 19:34:16,370 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-11-18 19:34:16,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-18 19:34:16,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:16,371 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:16,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:34:16,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:34:16,583 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:16,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2059891916, now seen corresponding path program 12 times [2022-11-18 19:34:16,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:34:16,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282845219] [2022-11-18 19:34:16,584 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:34:16,585 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 [2022-11-18 19:34:16,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:34:16,585 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:34:16,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:34:16,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-11-18 19:34:16,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:16,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-18 19:34:16,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-11-18 19:34:18,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:41,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1113 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-18 19:34:41,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:34:41,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282845219] [2022-11-18 19:34:41,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282845219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:41,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:34:41,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 69] total 116 [2022-11-18 19:34:41,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915415702] [2022-11-18 19:34:41,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:41,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-11-18 19:34:41,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:34:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-11-18 19:34:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=12917, Unknown=0, NotChecked=0, Total=13340 [2022-11-18 19:34:41,734 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 116 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 72 states have internal predecessors, (142), 24 states have call successors, (24), 1 states have call predecessors, (24), 44 states have return successors, (44), 44 states have call predecessors, (44), 24 states have call successors, (44) [2022-11-18 19:34:46,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:46,624 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2022-11-18 19:34:46,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 19:34:46,625 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 72 states have internal predecessors, (142), 24 states have call successors, (24), 1 states have call predecessors, (24), 44 states have return successors, (44), 44 states have call predecessors, (44), 24 states have call successors, (44) Word has length 137 [2022-11-18 19:34:46,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:46,626 INFO L225 Difference]: With dead ends: 88 [2022-11-18 19:34:46,626 INFO L226 Difference]: Without dead ends: 82 [2022-11-18 19:34:46,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3475 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=1730, Invalid=24676, Unknown=0, NotChecked=0, Total=26406 [2022-11-18 19:34:46,629 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 294 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2058 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:46,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1719 Invalid, 3598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1398 Invalid, 0 Unknown, 2058 Unchecked, 0.9s Time] [2022-11-18 19:34:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-18 19:34:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-18 19:34:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.018181818181818) internal successors, (56), 56 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (25), 24 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-18 19:34:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2022-11-18 19:34:46,636 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 137 [2022-11-18 19:34:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:46,637 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2022-11-18 19:34:46,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 72 states have internal predecessors, (142), 24 states have call successors, (24), 1 states have call predecessors, (24), 44 states have return successors, (44), 44 states have call predecessors, (44), 24 states have call successors, (44) [2022-11-18 19:34:46,638 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2022-11-18 19:34:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-18 19:34:46,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:46,639 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:46,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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)] Ended with exit code 0 [2022-11-18 19:34:46,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:34:46,850 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:46,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:46,850 INFO L85 PathProgramCache]: Analyzing trace with hash -706365708, now seen corresponding path program 13 times [2022-11-18 19:34:46,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:34:46,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803456429] [2022-11-18 19:34:46,851 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:34:46,851 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 [2022-11-18 19:34:46,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:34:46,852 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:34:46,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:34:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-18 19:34:47,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-18 19:34:49,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 1334 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-18 19:35:16,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:35:16,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803456429] [2022-11-18 19:35:16,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803456429] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:16,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:35:16,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 75] total 126 [2022-11-18 19:35:16,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704512029] [2022-11-18 19:35:16,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:16,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-11-18 19:35:16,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:35:16,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-11-18 19:35:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=15289, Unknown=0, NotChecked=0, Total=15750 [2022-11-18 19:35:16,747 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 126 states, 125 states have (on average 1.232) internal successors, (154), 78 states have internal predecessors, (154), 26 states have call successors, (26), 1 states have call predecessors, (26), 48 states have return successors, (48), 48 states have call predecessors, (48), 26 states have call successors, (48) [2022-11-18 19:35:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:22,598 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2022-11-18 19:35:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-18 19:35:22,599 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 1.232) internal successors, (154), 78 states have internal predecessors, (154), 26 states have call successors, (26), 1 states have call predecessors, (26), 48 states have return successors, (48), 48 states have call predecessors, (48), 26 states have call successors, (48) Word has length 149 [2022-11-18 19:35:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:22,600 INFO L225 Difference]: With dead ends: 94 [2022-11-18 19:35:22,600 INFO L226 Difference]: Without dead ends: 88 [2022-11-18 19:35:22,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4102 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=1982, Invalid=29170, Unknown=0, NotChecked=0, Total=31152 [2022-11-18 19:35:22,604 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1018 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 4673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2382 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:22,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1860 Invalid, 4673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 1798 Invalid, 0 Unknown, 2382 Unchecked, 1.2s Time] [2022-11-18 19:35:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-18 19:35:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-18 19:35:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 60 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 26 states have return successors, (27), 26 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-18 19:35:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-11-18 19:35:22,611 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 149 [2022-11-18 19:35:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:22,612 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-11-18 19:35:22,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 1.232) internal successors, (154), 78 states have internal predecessors, (154), 26 states have call successors, (26), 1 states have call predecessors, (26), 48 states have return successors, (48), 48 states have call predecessors, (48), 26 states have call successors, (48) [2022-11-18 19:35:22,612 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-11-18 19:35:22,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 19:35:22,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:22,614 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:22,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:35:22,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:35:22,827 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:22,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1677247156, now seen corresponding path program 14 times [2022-11-18 19:35:22,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:35:22,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432300703] [2022-11-18 19:35:22,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:35:22,828 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 [2022-11-18 19:35:22,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:35:22,829 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:35:22,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:35:23,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:35:23,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:23,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-18 19:35:23,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2022-11-18 19:35:25,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 1575 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 19:35:57,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:35:57,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432300703] [2022-11-18 19:35:57,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432300703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:57,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:35:57,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 81] total 136 [2022-11-18 19:35:57,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117219612] [2022-11-18 19:35:57,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:57,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2022-11-18 19:35:57,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:35:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2022-11-18 19:35:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=17861, Unknown=0, NotChecked=0, Total=18360 [2022-11-18 19:35:57,091 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 136 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 84 states have internal predecessors, (166), 28 states have call successors, (28), 1 states have call predecessors, (28), 52 states have return successors, (52), 52 states have call predecessors, (52), 28 states have call successors, (52) [2022-11-18 19:36:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:03,854 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2022-11-18 19:36:03,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 19:36:03,855 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 84 states have internal predecessors, (166), 28 states have call successors, (28), 1 states have call predecessors, (28), 52 states have return successors, (52), 52 states have call predecessors, (52), 28 states have call successors, (52) Word has length 161 [2022-11-18 19:36:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:03,856 INFO L225 Difference]: With dead ends: 100 [2022-11-18 19:36:03,857 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 19:36:03,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4781 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=2250, Invalid=34040, Unknown=0, NotChecked=0, Total=36290 [2022-11-18 19:36:03,860 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 917 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 5633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2731 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:03,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2341 Invalid, 5633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 2472 Invalid, 0 Unknown, 2731 Unchecked, 1.5s Time] [2022-11-18 19:36:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 19:36:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-18 19:36:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 64 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 28 states have return successors, (29), 28 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-18 19:36:03,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2022-11-18 19:36:03,867 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 161 [2022-11-18 19:36:03,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:03,868 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2022-11-18 19:36:03,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 84 states have internal predecessors, (166), 28 states have call successors, (28), 1 states have call predecessors, (28), 52 states have return successors, (52), 52 states have call predecessors, (52), 28 states have call successors, (52) [2022-11-18 19:36:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2022-11-18 19:36:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-18 19:36:03,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:03,871 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:03,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:36:04,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:36:04,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:04,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1199460748, now seen corresponding path program 15 times [2022-11-18 19:36:04,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:04,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423080258] [2022-11-18 19:36:04,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:36:04,087 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 [2022-11-18 19:36:04,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:04,088 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:36:04,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:36:04,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2022-11-18 19:36:04,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:04,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-18 19:36:04,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2022-11-18 19:36:07,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1836 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-11-18 19:36:44,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:44,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423080258] [2022-11-18 19:36:44,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423080258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:44,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:44,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 87] total 146 [2022-11-18 19:36:44,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000529225] [2022-11-18 19:36:44,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:44,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2022-11-18 19:36:44,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:44,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2022-11-18 19:36:44,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=20633, Unknown=0, NotChecked=0, Total=21170 [2022-11-18 19:36:44,281 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 146 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 90 states have internal predecessors, (178), 30 states have call successors, (30), 1 states have call predecessors, (30), 56 states have return successors, (56), 56 states have call predecessors, (56), 30 states have call successors, (56) [2022-11-18 19:36:51,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:51,756 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2022-11-18 19:36:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-18 19:36:51,757 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 90 states have internal predecessors, (178), 30 states have call successors, (30), 1 states have call predecessors, (30), 56 states have return successors, (56), 56 states have call predecessors, (56), 30 states have call successors, (56) Word has length 173 [2022-11-18 19:36:51,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:51,759 INFO L225 Difference]: With dead ends: 106 [2022-11-18 19:36:51,759 INFO L226 Difference]: Without dead ends: 100 [2022-11-18 19:36:51,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5512 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=2534, Invalid=39286, Unknown=0, NotChecked=0, Total=41820 [2022-11-18 19:36:51,762 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1023 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 5757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3246 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:51,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 2435 Invalid, 5757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2034 Invalid, 0 Unknown, 3246 Unchecked, 1.4s Time] [2022-11-18 19:36:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-18 19:36:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-18 19:36:51,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 68 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 30 states have return successors, (31), 30 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-18 19:36:51,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2022-11-18 19:36:51,777 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 173 [2022-11-18 19:36:51,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:51,777 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2022-11-18 19:36:51,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 90 states have internal predecessors, (178), 30 states have call successors, (30), 1 states have call predecessors, (30), 56 states have return successors, (56), 56 states have call predecessors, (56), 30 states have call successors, (56) [2022-11-18 19:36:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2022-11-18 19:36:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-18 19:36:51,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:51,780 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:51,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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)] Ended with exit code 0 [2022-11-18 19:36:51,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:36:51,995 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:51,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1668253132, now seen corresponding path program 16 times [2022-11-18 19:36:51,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:51,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219573231] [2022-11-18 19:36:51,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:36:51,996 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 [2022-11-18 19:36:51,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:51,997 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:36:51,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:36:52,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:36:52,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:52,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-18 19:36:52,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2022-11-18 19:36:55,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 2117 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-11-18 19:37:37,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:37,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219573231] [2022-11-18 19:37:37,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219573231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:37,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:37:37,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 93] total 156 [2022-11-18 19:37:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627923971] [2022-11-18 19:37:37,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:37,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2022-11-18 19:37:37,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2022-11-18 19:37:37,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=23605, Unknown=0, NotChecked=0, Total=24180 [2022-11-18 19:37:37,845 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 156 states, 155 states have (on average 1.2258064516129032) internal successors, (190), 96 states have internal predecessors, (190), 32 states have call successors, (32), 1 states have call predecessors, (32), 60 states have return successors, (60), 60 states have call predecessors, (60), 32 states have call successors, (60) [2022-11-18 19:37:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:46,333 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2022-11-18 19:37:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-18 19:37:46,334 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 155 states have (on average 1.2258064516129032) internal successors, (190), 96 states have internal predecessors, (190), 32 states have call successors, (32), 1 states have call predecessors, (32), 60 states have return successors, (60), 60 states have call predecessors, (60), 32 states have call successors, (60) Word has length 185 [2022-11-18 19:37:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:46,336 INFO L225 Difference]: With dead ends: 112 [2022-11-18 19:37:46,336 INFO L226 Difference]: Without dead ends: 106 [2022-11-18 19:37:46,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6295 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=2834, Invalid=44908, Unknown=0, NotChecked=0, Total=47742 [2022-11-18 19:37:46,340 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 771 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 2661 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 6715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3693 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:46,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 3126 Invalid, 6715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2661 Invalid, 0 Unknown, 3693 Unchecked, 1.6s Time] [2022-11-18 19:37:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-18 19:37:46,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-18 19:37:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 72 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (33), 32 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-18 19:37:46,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2022-11-18 19:37:46,347 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 185 [2022-11-18 19:37:46,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:46,348 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2022-11-18 19:37:46,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 155 states have (on average 1.2258064516129032) internal successors, (190), 96 states have internal predecessors, (190), 32 states have call successors, (32), 1 states have call predecessors, (32), 60 states have return successors, (60), 60 states have call predecessors, (60), 32 states have call successors, (60) [2022-11-18 19:37:46,349 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2022-11-18 19:37:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-18 19:37:46,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:46,351 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:46,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:37:46,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:37:46,564 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash 422913524, now seen corresponding path program 17 times [2022-11-18 19:37:46,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:46,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278689422] [2022-11-18 19:37:46,565 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:37:46,565 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 [2022-11-18 19:37:46,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:46,566 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 19:37:46,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:37:47,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-11-18 19:37:47,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-18 19:37:47,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:37:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:37:47,170 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-18 19:37:47,171 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:37:47,172 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 19:37:47,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:37:47,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 19:37:47,396 INFO L444 BasicCegarLoop]: Path program histogram: [17, 1] [2022-11-18 19:37:47,400 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:37:47,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:37:47 BoogieIcfgContainer [2022-11-18 19:37:47,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:37:47,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:37:47,453 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:37:47,453 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:37:47,454 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:50" (3/4) ... [2022-11-18 19:37:47,462 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 19:37:47,564 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6fbd5aa-fb40-42b7-9e56-e6ad0430e20e/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:37:47,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:37:47,566 INFO L158 Benchmark]: Toolchain (without parser) took 357679.44ms. Allocated memory was 77.6MB in the beginning and 182.5MB in the end (delta: 104.9MB). Free memory was 44.0MB in the beginning and 30.9MB in the end (delta: 13.1MB). Peak memory consumption was 119.6MB. Max. memory is 16.1GB. [2022-11-18 19:37:47,566 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 77.6MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:37:47,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.28ms. Allocated memory is still 77.6MB. Free memory was 43.9MB in the beginning and 62.6MB in the end (delta: -18.8MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-11-18 19:37:47,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.27ms. Allocated memory is still 77.6MB. Free memory was 62.6MB in the beginning and 61.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:37:47,572 INFO L158 Benchmark]: Boogie Preprocessor took 36.72ms. Allocated memory is still 77.6MB. Free memory was 61.1MB in the beginning and 60.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:37:47,573 INFO L158 Benchmark]: RCFGBuilder took 360.01ms. Allocated memory is still 77.6MB. Free memory was 60.1MB in the beginning and 50.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:37:47,573 INFO L158 Benchmark]: TraceAbstraction took 356828.05ms. Allocated memory was 77.6MB in the beginning and 182.5MB in the end (delta: 104.9MB). Free memory was 49.4MB in the beginning and 36.2MB in the end (delta: 13.2MB). Peak memory consumption was 119.2MB. Max. memory is 16.1GB. [2022-11-18 19:37:47,574 INFO L158 Benchmark]: Witness Printer took 112.05ms. Allocated memory is still 182.5MB. Free memory was 36.2MB in the beginning and 30.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-18 19:37:47,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 77.6MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.28ms. Allocated memory is still 77.6MB. Free memory was 43.9MB in the beginning and 62.6MB in the end (delta: -18.8MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.27ms. Allocated memory is still 77.6MB. Free memory was 62.6MB in the beginning and 61.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.72ms. Allocated memory is still 77.6MB. Free memory was 61.1MB in the beginning and 60.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 360.01ms. Allocated memory is still 77.6MB. Free memory was 60.1MB in the beginning and 50.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 356828.05ms. Allocated memory was 77.6MB in the beginning and 182.5MB in the end (delta: 104.9MB). Free memory was 49.4MB in the beginning and 36.2MB in the end (delta: 13.2MB). Peak memory consumption was 119.2MB. Max. memory is 16.1GB. * Witness Printer took 112.05ms. Allocated memory is still 182.5MB. Free memory was 36.2MB in the beginning and 30.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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 - CounterExampleResult [Line: 36]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L27] int n = __VERIFIER_nondet_int(); [L28] COND FALSE !(n < 1) VAL [n=32] [L31] CALL, EXPR hanoi(n) VAL [\old(n)=32] [L19] COND FALSE !(n == 1) VAL [\old(n)=32, n=32] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=31] [L19] COND FALSE !(n == 1) VAL [\old(n)=31, n=31] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=30] [L19] COND FALSE !(n == 1) VAL [\old(n)=30, n=30] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=29] [L19] COND FALSE !(n == 1) VAL [\old(n)=29, n=29] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=28] [L19] COND FALSE !(n == 1) VAL [\old(n)=28, n=28] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=27] [L19] COND FALSE !(n == 1) VAL [\old(n)=27, n=27] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=26] [L19] COND FALSE !(n == 1) VAL [\old(n)=26, n=26] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=25] [L19] COND FALSE !(n == 1) VAL [\old(n)=25, n=25] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=24] [L19] COND FALSE !(n == 1) VAL [\old(n)=24, n=24] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=23] [L19] COND FALSE !(n == 1) VAL [\old(n)=23, n=23] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=22] [L19] COND FALSE !(n == 1) VAL [\old(n)=22, n=22] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=21] [L19] COND FALSE !(n == 1) VAL [\old(n)=21, n=21] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=20] [L19] COND FALSE !(n == 1) VAL [\old(n)=20, n=20] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=19] [L19] COND FALSE !(n == 1) VAL [\old(n)=19, n=19] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=18] [L19] COND FALSE !(n == 1) VAL [\old(n)=18, n=18] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=17] [L19] COND FALSE !(n == 1) VAL [\old(n)=17, n=17] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=16] [L19] COND FALSE !(n == 1) VAL [\old(n)=16, n=16] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=15] [L19] COND FALSE !(n == 1) VAL [\old(n)=15, n=15] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=14] [L19] COND FALSE !(n == 1) VAL [\old(n)=14, n=14] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=13] [L19] COND FALSE !(n == 1) VAL [\old(n)=13, n=13] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=12] [L19] COND FALSE !(n == 1) VAL [\old(n)=12, n=12] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=11] [L19] COND FALSE !(n == 1) VAL [\old(n)=11, n=11] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=10] [L19] COND FALSE !(n == 1) VAL [\old(n)=10, n=10] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=9] [L19] COND FALSE !(n == 1) VAL [\old(n)=9, n=9] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=8] [L19] COND FALSE !(n == 1) VAL [\old(n)=8, n=8] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=7] [L19] COND FALSE !(n == 1) VAL [\old(n)=7, n=7] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=6] [L19] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=5] [L19] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=4] [L19] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=3] [L19] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=2] [L19] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=1] [L19] COND TRUE n == 1 [L20] return 1; VAL [\old(n)=1, \result=1, n=1] [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=2, hanoi(n-1)=1, n=2] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=3, hanoi(n-1)=3, n=3] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=4, hanoi(n-1)=7, n=4] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=5, hanoi(n-1)=15, n=5] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=6, hanoi(n-1)=31, n=6] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=7, hanoi(n-1)=63, n=7] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=8, hanoi(n-1)=127, n=8] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=9, hanoi(n-1)=255, n=9] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=10, hanoi(n-1)=511, n=10] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=11, hanoi(n-1)=1023, n=11] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=12, hanoi(n-1)=2047, n=12] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=13, hanoi(n-1)=4095, n=13] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=14, hanoi(n-1)=8191, n=14] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=15, hanoi(n-1)=16383, n=15] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=16, hanoi(n-1)=32767, n=16] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=17, hanoi(n-1)=65535, n=17] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=18, hanoi(n-1)=131071, n=18] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=19, hanoi(n-1)=262143, n=19] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=20, hanoi(n-1)=524287, n=20] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=21, hanoi(n-1)=1048575, n=21] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=22, hanoi(n-1)=2097151, n=22] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=23, hanoi(n-1)=4194303, n=23] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=24, hanoi(n-1)=8388607, n=24] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=25, hanoi(n-1)=16777215, n=25] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=26, hanoi(n-1)=33554431, n=26] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=27, hanoi(n-1)=67108863, n=27] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=28, hanoi(n-1)=134217727, n=28] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=29, hanoi(n-1)=268435455, n=29] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=30, hanoi(n-1)=536870911, n=30] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=31, hanoi(n-1)=1073741823, n=31] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=32, hanoi(n-1)=2147483647, n=32] [L22] return 2 * (hanoi(n-1)) + 1; [L31] RET, EXPR hanoi(n) VAL [hanoi(n)=-1, n=32] [L31] unsigned result = hanoi(n); [L33] COND FALSE !(result+1>0 && result+1 == 1<