./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 b5237d83 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_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-b5237d8 [2022-11-21 17:04:37,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:04:37,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:04:37,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:04:37,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:04:37,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:04:37,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:04:37,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:04:37,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:04:37,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:04:37,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:04:37,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:04:37,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:04:37,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:04:37,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:04:37,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:04:37,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:04:37,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:04:37,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:04:37,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:04:37,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:04:37,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:04:37,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:04:37,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:04:37,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:04:37,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:04:37,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:04:37,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:04:37,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:04:37,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:04:37,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:04:37,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:04:37,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:04:37,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:04:37,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:04:37,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:04:37,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:04:37,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:04:37,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:04:37,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:04:37,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:04:37,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:04:37,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:04:37,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:04:37,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:04:37,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:04:37,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:04:37,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:04:37,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:04:37,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:04:37,677 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:04:37,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:04:37,678 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:04:37,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:04:37,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:04:37,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:04:37,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:04:37,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:04:37,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:04:37,680 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:04:37,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:04:37,681 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:04:37,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:04:37,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:04:37,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:04:37,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:04:37,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:04:37,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:04:37,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:04:37,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:04:37,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:04:37,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:04:37,685 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:04:37,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:04:37,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:04:37,686 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_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2022-11-21 17:04:38,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:04:38,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:04:38,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:04:38,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:04:38,144 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:04:38,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2022-11-21 17:04:41,496 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:04:41,786 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:04:41,786 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2022-11-21 17:04:41,793 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/data/3a63dccf3/3fb733a389c54f03b7f20c0ee97f4483/FLAGe0f3a2462 [2022-11-21 17:04:41,818 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/data/3a63dccf3/3fb733a389c54f03b7f20c0ee97f4483 [2022-11-21 17:04:41,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:04:41,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:04:41,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:04:41,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:04:41,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:04:41,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c42e044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:41, skipping insertion in model container [2022-11-21 17:04:41,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:04:41" (1/1) ... [2022-11-21 17:04:41,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:04:41,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:04:42,111 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2022-11-21 17:04:42,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:04:42,136 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:04:42,190 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2022-11-21 17:04:42,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:04:42,209 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:04:42,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42 WrapperNode [2022-11-21 17:04:42,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:04:42,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:04:42,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:04:42,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:04:42,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,301 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2022-11-21 17:04:42,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:04:42,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:04:42,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:04:42,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:04:42,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,330 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:04:42,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:04:42,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:04:42,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:04:42,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (1/1) ... [2022-11-21 17:04:42,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:04:42,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:04:42,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:04:42,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:04:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:04:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2022-11-21 17:04:42,431 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2022-11-21 17:04:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:04:42,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:04:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:04:42,517 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:04:42,519 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:04:42,682 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:04:42,690 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:04:42,690 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 17:04:42,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:04:42 BoogieIcfgContainer [2022-11-21 17:04:42,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:04:42,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:04:42,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:04:42,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:04:42,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:04:41" (1/3) ... [2022-11-21 17:04:42,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b5a6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:04:42, skipping insertion in model container [2022-11-21 17:04:42,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:42" (2/3) ... [2022-11-21 17:04:42,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b5a6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:04:42, skipping insertion in model container [2022-11-21 17:04:42,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:04:42" (3/3) ... [2022-11-21 17:04:42,712 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2022-11-21 17:04:42,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:04:42,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:04:42,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:04:42,815 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;@2e172e28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:04:42,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:04:42,821 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) [2022-11-21 17:04:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 17:04:42,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:42,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:42,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:42,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2022-11-21 17:04:42,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:42,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905317971] [2022-11-21 17:04:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:42,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:04:43,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:04:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:04:43,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:04:43,068 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:04:43,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 17:04:43,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:04:43,075 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 17:04:43,079 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:04:43,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:04:43 BoogieIcfgContainer [2022-11-21 17:04:43,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:04:43,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:04:43,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:04:43,100 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:04:43,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:04:42" (3/4) ... [2022-11-21 17:04:43,104 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 17:04:43,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:04:43,105 INFO L158 Benchmark]: Toolchain (without parser) took 1277.31ms. Allocated memory is still 159.4MB. Free memory was 121.3MB in the beginning and 103.0MB in the end (delta: 18.3MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2022-11-21 17:04:43,106 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 115.3MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:04:43,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.92ms. Allocated memory is still 159.4MB. Free memory was 120.9MB in the beginning and 131.6MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:04:43,107 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.24ms. Allocated memory is still 159.4MB. Free memory was 131.1MB in the beginning and 129.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:04:43,108 INFO L158 Benchmark]: Boogie Preprocessor took 32.54ms. Allocated memory is still 159.4MB. Free memory was 129.8MB in the beginning and 128.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:04:43,109 INFO L158 Benchmark]: RCFGBuilder took 356.09ms. Allocated memory is still 159.4MB. Free memory was 128.8MB in the beginning and 119.3MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:04:43,109 INFO L158 Benchmark]: TraceAbstraction took 404.07ms. Allocated memory is still 159.4MB. Free memory was 118.3MB in the beginning and 103.0MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-21 17:04:43,110 INFO L158 Benchmark]: Witness Printer took 4.95ms. Allocated memory is still 159.4MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:04:43,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 115.3MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.92ms. Allocated memory is still 159.4MB. Free memory was 120.9MB in the beginning and 131.6MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.24ms. Allocated memory is still 159.4MB. Free memory was 131.1MB in the beginning and 129.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.54ms. Allocated memory is still 159.4MB. Free memory was 129.8MB in the beginning and 128.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 356.09ms. Allocated memory is still 159.4MB. Free memory was 128.8MB in the beginning and 119.3MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 404.07ms. Allocated memory is still 159.4MB. Free memory was 118.3MB in the beginning and 103.0MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.95ms. Allocated memory is still 159.4MB. Free memory is still 103.0MB. 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_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2022-11-21 17:04:47,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:04:47,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:04:47,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:04:47,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:04:47,059 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:04:47,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2022-11-21 17:04:50,607 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:04:50,925 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:04:50,925 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2022-11-21 17:04:50,933 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/data/c42b5ed1f/0037c42ed42849e3a1d2be72f74218f7/FLAG692958604 [2022-11-21 17:04:50,950 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/data/c42b5ed1f/0037c42ed42849e3a1d2be72f74218f7 [2022-11-21 17:04:50,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:04:50,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:04:50,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:04:50,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:04:50,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:04:50,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:04:50" (1/1) ... [2022-11-21 17:04:50,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c9d200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:50, skipping insertion in model container [2022-11-21 17:04:50,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:04:50" (1/1) ... [2022-11-21 17:04:50,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:04:50,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:04:51,159 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2022-11-21 17:04:51,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:04:51,190 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:04:51,222 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2022-11-21 17:04:51,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:04:51,242 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:04:51,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51 WrapperNode [2022-11-21 17:04:51,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:04:51,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:04:51,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:04:51,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:04:51,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,291 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-11-21 17:04:51,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:04:51,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:04:51,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:04:51,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:04:51,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,343 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:04:51,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:04:51,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:04:51,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:04:51,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (1/1) ... [2022-11-21 17:04:51,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:04:51,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:04:51,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:04:51,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:04:51,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:04:51,474 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2022-11-21 17:04:51,474 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2022-11-21 17:04:51,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:04:51,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:04:51,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 17:04:51,585 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:04:51,588 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:04:51,856 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:04:51,878 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:04:51,878 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 17:04:51,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:04:51 BoogieIcfgContainer [2022-11-21 17:04:51,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:04:51,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:04:51,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:04:51,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:04:51,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:04:50" (1/3) ... [2022-11-21 17:04:51,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc8c1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:04:51, skipping insertion in model container [2022-11-21 17:04:51,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:51" (2/3) ... [2022-11-21 17:04:51,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc8c1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:04:51, skipping insertion in model container [2022-11-21 17:04:51,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:04:51" (3/3) ... [2022-11-21 17:04:51,892 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2022-11-21 17:04:51,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:04:51,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:04:51,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:04:51,985 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;@56d114e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:04:51,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:04:51,990 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) [2022-11-21 17:04:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 17:04:52,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:52,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:52,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:52,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2022-11-21 17:04:52,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:04:52,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687403485] [2022-11-21 17:04:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:52,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:04:52,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:04:52,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:04:52,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-21 17:04:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:52,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:04:52,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:04:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:52,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:04:52,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:04:52,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687403485] [2022-11-21 17:04:52,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687403485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:52,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:52,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:04:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210425436] [2022-11-21 17:04:52,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:52,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:04:52,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:04:52,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:04:52,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:04:52,429 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) [2022-11-21 17:04:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:52,570 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-11-21 17:04:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:04:52,574 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 [2022-11-21 17:04:52,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:52,584 INFO L225 Difference]: With dead ends: 32 [2022-11-21 17:04:52,584 INFO L226 Difference]: Without dead ends: 16 [2022-11-21 17:04:52,588 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 [2022-11-21 17:04:52,592 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 [2022-11-21 17:04:52,593 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] [2022-11-21 17:04:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-21 17:04:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-21 17:04:52,660 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) [2022-11-21 17:04:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-21 17:04:52,681 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-11-21 17:04:52,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:52,681 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-21 17:04:52,682 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) [2022-11-21 17:04:52,682 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-21 17:04:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 17:04:52,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:52,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:52,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:04:52,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:04:52,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:52,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:52,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2053638732, now seen corresponding path program 1 times [2022-11-21 17:04:52,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:04:52,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981290479] [2022-11-21 17:04:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:52,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:04:52,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:04:52,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:04:52,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 17:04:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:52,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 17:04:52,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:04:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:04:53,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:04:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:04:54,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:04:54,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981290479] [2022-11-21 17:04:54,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981290479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:04:54,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:04:54,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-21 17:04:54,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18575258] [2022-11-21 17:04:54,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:04:54,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:04:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:04:54,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:04:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:04:54,181 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) [2022-11-21 17:04:54,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:54,741 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-21 17:04:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 17:04:54,743 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 [2022-11-21 17:04:54,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:54,744 INFO L225 Difference]: With dead ends: 28 [2022-11-21 17:04:54,744 INFO L226 Difference]: Without dead ends: 22 [2022-11-21 17:04:54,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:04:54,747 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:54,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 61 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:04:54,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-21 17:04:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-21 17:04:54,759 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) [2022-11-21 17:04:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-21 17:04:54,760 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2022-11-21 17:04:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:54,760 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-21 17:04:54,761 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) [2022-11-21 17:04:54,761 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-21 17:04:54,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 17:04:54,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:54,762 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:54,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:04:54,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:04:54,978 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:54,979 INFO L85 PathProgramCache]: Analyzing trace with hash -491101836, now seen corresponding path program 2 times [2022-11-21 17:04:54,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:04:54,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284545605] [2022-11-21 17:04:54,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:04:54,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:04:54,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:04:54,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:04:54,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-21 17:04:55,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:04:55,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:04:55,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 17:04:55,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:04:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:04:55,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:04:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 17:04:57,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:04:57,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284545605] [2022-11-21 17:04:57,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284545605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:04:57,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:04:57,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2022-11-21 17:04:57,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691752898] [2022-11-21 17:04:57,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:04:57,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:04:57,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:04:57,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:04:57,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-11-21 17:04:57,252 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) [2022-11-21 17:04:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:58,174 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-21 17:04:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:04:58,176 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 [2022-11-21 17:04:58,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:58,177 INFO L225 Difference]: With dead ends: 34 [2022-11-21 17:04:58,177 INFO L226 Difference]: Without dead ends: 28 [2022-11-21 17:04:58,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 17:04:58,179 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 54 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:58,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 118 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:04:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-21 17:04:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-21 17:04:58,186 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) [2022-11-21 17:04:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-21 17:04:58,187 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 29 [2022-11-21 17:04:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:04:58,188 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-21 17:04:58,188 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) [2022-11-21 17:04:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-21 17:04:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 17:04:58,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:04:58,190 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:58,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:04:58,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:04:58,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:04:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:58,422 INFO L85 PathProgramCache]: Analyzing trace with hash -492655308, now seen corresponding path program 3 times [2022-11-21 17:04:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:04:58,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318926907] [2022-11-21 17:04:58,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:04:58,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:04:58,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:04:58,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:04:58,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-21 17:04:58,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 17:04:58,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:04:58,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-21 17:04:58,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:04:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-21 17:04:58,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:05:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:05:02,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:05:02,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318926907] [2022-11-21 17:05:02,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318926907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:05:02,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:05:02,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 36 [2022-11-21 17:05:02,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636039048] [2022-11-21 17:05:02,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:05:02,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-21 17:05:02,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:05:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-21 17:05:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 17:05:02,286 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) [2022-11-21 17:05:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:03,673 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-11-21 17:05:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:05:03,674 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 [2022-11-21 17:05:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:03,675 INFO L225 Difference]: With dead ends: 40 [2022-11-21 17:05:03,675 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 17:05:03,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=290, Invalid=2260, Unknown=0, NotChecked=0, Total=2550 [2022-11-21 17:05:03,678 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 70 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:03,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 205 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 17:05:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 17:05:03,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-21 17:05:03,692 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) [2022-11-21 17:05:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-11-21 17:05:03,697 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 41 [2022-11-21 17:05:03,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:03,698 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-11-21 17:05:03,698 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) [2022-11-21 17:05:03,699 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-11-21 17:05:03,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-21 17:05:03,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:03,703 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:03,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:05:03,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:05:03,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1906255628, now seen corresponding path program 4 times [2022-11-21 17:05:03,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:05:03,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670749561] [2022-11-21 17:05:03,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:05:03,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:05:03,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:05:03,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:05:03,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-21 17:05:03,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:05:03,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:05:03,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-21 17:05:04,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:05:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-21 17:05:04,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:05:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 17:05:09,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:05:09,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670749561] [2022-11-21 17:05:09,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670749561] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:05:09,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:05:09,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 46 [2022-11-21 17:05:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118105515] [2022-11-21 17:05:09,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:05:09,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-21 17:05:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:05:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-21 17:05:09,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1913, Unknown=0, NotChecked=0, Total=2070 [2022-11-21 17:05:09,425 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) [2022-11-21 17:05:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:11,011 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-11-21 17:05:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 17:05:11,012 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 [2022-11-21 17:05:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:11,013 INFO L225 Difference]: With dead ends: 46 [2022-11-21 17:05:11,014 INFO L226 Difference]: Without dead ends: 40 [2022-11-21 17:05:11,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=414, Invalid=3746, Unknown=0, NotChecked=0, Total=4160 [2022-11-21 17:05:11,016 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 126 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:11,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 300 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 17:05:11,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-21 17:05:11,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-21 17:05:11,023 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) [2022-11-21 17:05:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-11-21 17:05:11,024 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 53 [2022-11-21 17:05:11,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:11,025 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-11-21 17:05:11,025 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) [2022-11-21 17:05:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-11-21 17:05:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 17:05:11,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:11,027 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:11,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:05:11,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:05:11,235 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:11,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash 788849844, now seen corresponding path program 5 times [2022-11-21 17:05:11,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:05:11,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830585190] [2022-11-21 17:05:11,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:05:11,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:05:11,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:05:11,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:05:11,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-21 17:05:11,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-21 17:05:11,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:05:11,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 17:05:11,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:05:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-21 17:05:12,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:05:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 17:05:18,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:05:18,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830585190] [2022-11-21 17:05:18,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830585190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:05:18,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:05:18,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33] total 56 [2022-11-21 17:05:18,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285864311] [2022-11-21 17:05:18,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:05:18,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-21 17:05:18,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:05:18,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-21 17:05:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2885, Unknown=0, NotChecked=0, Total=3080 [2022-11-21 17:05:18,522 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) [2022-11-21 17:05:21,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:21,039 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2022-11-21 17:05:21,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 17:05:21,041 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 [2022-11-21 17:05:21,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:21,043 INFO L225 Difference]: With dead ends: 52 [2022-11-21 17:05:21,043 INFO L226 Difference]: Without dead ends: 46 [2022-11-21 17:05:21,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=554, Invalid=5608, Unknown=0, NotChecked=0, Total=6162 [2022-11-21 17:05:21,046 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 150 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:21,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 443 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 17:05:21,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-21 17:05:21,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-21 17:05:21,061 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) [2022-11-21 17:05:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2022-11-21 17:05:21,065 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 65 [2022-11-21 17:05:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:21,069 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2022-11-21 17:05:21,070 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) [2022-11-21 17:05:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2022-11-21 17:05:21,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 17:05:21,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:21,073 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:21,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:05:21,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:05:21,295 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:21,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:21,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1302253684, now seen corresponding path program 6 times [2022-11-21 17:05:21,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:05:21,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677302629] [2022-11-21 17:05:21,296 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:05:21,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:05:21,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:05:21,303 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:05:21,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-21 17:05:21,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-11-21 17:05:21,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:05:21,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-21 17:05:21,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:05:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-21 17:05:22,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:05:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-21 17:05:31,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:05:31,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677302629] [2022-11-21 17:05:31,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677302629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:05:31,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:05:31,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 39] total 66 [2022-11-21 17:05:31,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617650030] [2022-11-21 17:05:31,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:05:31,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-21 17:05:31,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:05:31,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-21 17:05:31,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=4057, Unknown=0, NotChecked=0, Total=4290 [2022-11-21 17:05:31,860 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) [2022-11-21 17:05:35,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:35,219 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2022-11-21 17:05:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 17:05:35,232 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 [2022-11-21 17:05:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:35,233 INFO L225 Difference]: With dead ends: 58 [2022-11-21 17:05:35,234 INFO L226 Difference]: Without dead ends: 52 [2022-11-21 17:05:35,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=710, Invalid=7846, Unknown=0, NotChecked=0, Total=8556 [2022-11-21 17:05:35,237 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 90 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:35,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 556 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 17:05:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-21 17:05:35,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-21 17:05:35,250 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) [2022-11-21 17:05:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2022-11-21 17:05:35,253 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 77 [2022-11-21 17:05:35,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:35,254 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2022-11-21 17:05:35,255 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) [2022-11-21 17:05:35,255 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2022-11-21 17:05:35,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:05:35,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:35,260 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:35,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:05:35,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:05:35,477 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:35,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:35,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1287742412, now seen corresponding path program 7 times [2022-11-21 17:05:35,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:05:35,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42214953] [2022-11-21 17:05:35,478 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:05:35,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:05:35,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:05:35,481 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:05:35,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-21 17:05:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:35,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-21 17:05:35,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:05:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-21 17:05:36,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:05:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-21 17:05:48,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:05:48,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42214953] [2022-11-21 17:05:48,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42214953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:05:48,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:05:48,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 45] total 76 [2022-11-21 17:05:48,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871136637] [2022-11-21 17:05:48,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:05:48,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-11-21 17:05:48,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:05:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-11-21 17:05:48,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=5429, Unknown=0, NotChecked=0, Total=5700 [2022-11-21 17:05:48,646 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) [2022-11-21 17:05:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:52,564 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2022-11-21 17:05:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 17:05:52,565 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 [2022-11-21 17:05:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:52,566 INFO L225 Difference]: With dead ends: 64 [2022-11-21 17:05:52,566 INFO L226 Difference]: Without dead ends: 58 [2022-11-21 17:05:52,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=882, Invalid=10460, Unknown=0, NotChecked=0, Total=11342 [2022-11-21 17:05:52,569 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 262 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:52,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 853 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 17:05:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-21 17:05:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-21 17:05:52,579 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) [2022-11-21 17:05:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2022-11-21 17:05:52,580 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 89 [2022-11-21 17:05:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:52,580 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2022-11-21 17:05:52,581 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) [2022-11-21 17:05:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2022-11-21 17:05:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-21 17:05:52,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:52,582 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:52,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-21 17:05:52,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:05:52,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:52,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1760839668, now seen corresponding path program 8 times [2022-11-21 17:05:52,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:05:52,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196721145] [2022-11-21 17:05:52,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:05:52,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:05:52,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:05:52,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:05:52,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-21 17:05:52,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:05:52,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:05:52,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-21 17:05:52,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:05:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-21 17:05:54,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:06:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-21 17:06:09,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:06:09,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196721145] [2022-11-21 17:06:09,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196721145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:06:09,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:06:09,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 51] total 86 [2022-11-21 17:06:09,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730984764] [2022-11-21 17:06:09,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:06:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-11-21 17:06:09,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:06:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-11-21 17:06:09,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=7001, Unknown=0, NotChecked=0, Total=7310 [2022-11-21 17:06:09,026 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) [2022-11-21 17:06:13,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:13,472 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2022-11-21 17:06:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 17:06:13,473 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 [2022-11-21 17:06:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:13,474 INFO L225 Difference]: With dead ends: 70 [2022-11-21 17:06:13,475 INFO L226 Difference]: Without dead ends: 64 [2022-11-21 17:06:13,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1070, Invalid=13450, Unknown=0, NotChecked=0, Total=14520 [2022-11-21 17:06:13,479 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 546 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:13,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 890 Invalid, 2038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:06:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-21 17:06:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-21 17:06:13,486 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) [2022-11-21 17:06:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-11-21 17:06:13,487 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 101 [2022-11-21 17:06:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:13,487 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-11-21 17:06:13,488 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) [2022-11-21 17:06:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-11-21 17:06:13,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-21 17:06:13,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:13,489 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:13,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-21 17:06:13,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:06:13,702 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:13,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1211116620, now seen corresponding path program 9 times [2022-11-21 17:06:13,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:06:13,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386548624] [2022-11-21 17:06:13,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:06:13,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:06:13,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:06:13,703 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:06:13,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-21 17:06:13,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-11-21 17:06:13,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:06:13,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-21 17:06:13,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:06:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-11-21 17:06:15,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:06:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-21 17:06:31,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:06:31,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386548624] [2022-11-21 17:06:31,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386548624] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:06:31,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:06:31,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 57] total 96 [2022-11-21 17:06:31,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013712094] [2022-11-21 17:06:31,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:06:31,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-21 17:06:31,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:06:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-21 17:06:31,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=8773, Unknown=0, NotChecked=0, Total=9120 [2022-11-21 17:06:31,994 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) [2022-11-21 17:06:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:37,245 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2022-11-21 17:06:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 17:06:37,246 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 [2022-11-21 17:06:37,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:37,248 INFO L225 Difference]: With dead ends: 76 [2022-11-21 17:06:37,248 INFO L226 Difference]: Without dead ends: 70 [2022-11-21 17:06:37,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2377 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=1274, Invalid=16816, Unknown=0, NotChecked=0, Total=18090 [2022-11-21 17:06:37,252 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 686 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:37,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1113 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 17:06:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-21 17:06:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-21 17:06:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 48 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (21), 20 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 17:06:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-11-21 17:06:37,262 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 113 [2022-11-21 17:06:37,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:37,262 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-11-21 17:06:37,263 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) [2022-11-21 17:06:37,263 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-11-21 17:06:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-21 17:06:37,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:37,265 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:37,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:06:37,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:06:37,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:37,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash 685850484, now seen corresponding path program 10 times [2022-11-21 17:06:37,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:06:37,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361053807] [2022-11-21 17:06:37,476 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:06:37,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:06:37,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:06:37,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:06:37,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-21 17:06:37,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:06:37,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:06:37,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-21 17:06:37,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:06:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-11-21 17:06:39,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:07:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-21 17:07:00,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:07:00,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361053807] [2022-11-21 17:07:00,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361053807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:07:00,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:07:00,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 63] total 106 [2022-11-21 17:07:00,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842603397] [2022-11-21 17:07:00,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:07:00,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-11-21 17:07:00,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:07:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-11-21 17:07:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=10745, Unknown=0, NotChecked=0, Total=11130 [2022-11-21 17:07:00,338 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) [2022-11-21 17:07:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:06,629 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2022-11-21 17:07:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 17:07:06,630 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) Word has length 125 [2022-11-21 17:07:06,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:06,631 INFO L225 Difference]: With dead ends: 82 [2022-11-21 17:07:06,631 INFO L226 Difference]: Without dead ends: 76 [2022-11-21 17:07:06,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=1494, Invalid=20558, Unknown=0, NotChecked=0, Total=22052 [2022-11-21 17:07:06,641 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 622 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 2582 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:06,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1401 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2582 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-21 17:07:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-21 17:07:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-21 17:07:06,664 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) [2022-11-21 17:07:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-11-21 17:07:06,672 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 125 [2022-11-21 17:07:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:06,673 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-11-21 17:07:06,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) [2022-11-21 17:07:06,674 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-11-21 17:07:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-21 17:07:06,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:06,679 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:06,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:07:06,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:07:06,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:06,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:06,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2059891916, now seen corresponding path program 11 times [2022-11-21 17:07:06,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:07:06,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220651825] [2022-11-21 17:07:06,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:07:06,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:07:06,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:07:06,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:07:06,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-21 17:07:07,106 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-11-21 17:07:07,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:07:07,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-21 17:07:07,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:07:09,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-11-21 17:07:09,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:07:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1113 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-21 17:07:33,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:07:33,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220651825] [2022-11-21 17:07:33,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220651825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:07:33,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:07:33,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 69] total 116 [2022-11-21 17:07:33,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333287065] [2022-11-21 17:07:33,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:07:33,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-11-21 17:07:33,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:07:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-11-21 17:07:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=12917, Unknown=0, NotChecked=0, Total=13340 [2022-11-21 17:07:33,922 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) [2022-11-21 17:07:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:41,121 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2022-11-21 17:07:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-21 17:07:41,122 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 [2022-11-21 17:07:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:41,123 INFO L225 Difference]: With dead ends: 88 [2022-11-21 17:07:41,123 INFO L226 Difference]: Without dead ends: 82 [2022-11-21 17:07:41,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3475 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=1730, Invalid=24676, Unknown=0, NotChecked=0, Total=26406 [2022-11-21 17:07:41,126 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 870 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 3240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:41,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1444 Invalid, 3240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 17:07:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-21 17:07:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-21 17:07:41,133 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) [2022-11-21 17:07:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2022-11-21 17:07:41,143 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 137 [2022-11-21 17:07:41,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:41,144 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2022-11-21 17:07:41,144 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) [2022-11-21 17:07:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2022-11-21 17:07:41,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-21 17:07:41,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:41,147 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:41,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:07:41,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:07:41,361 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:41,361 INFO L85 PathProgramCache]: Analyzing trace with hash -706365708, now seen corresponding path program 12 times [2022-11-21 17:07:41,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:07:41,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649886802] [2022-11-21 17:07:41,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:07:41,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:07:41,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:07:41,363 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:07:41,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-21 17:07:41,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2022-11-21 17:07:41,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:07:41,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-21 17:07:41,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:07:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-21 17:07:43,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:08:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 1334 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-21 17:08:13,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:08:13,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649886802] [2022-11-21 17:08:13,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649886802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:08:13,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:08:13,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 75] total 126 [2022-11-21 17:08:13,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678630621] [2022-11-21 17:08:13,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:08:13,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-11-21 17:08:13,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:08:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-11-21 17:08:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=15289, Unknown=0, NotChecked=0, Total=15750 [2022-11-21 17:08:13,073 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) [2022-11-21 17:08:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:08:21,769 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2022-11-21 17:08:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-21 17:08:21,770 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 [2022-11-21 17:08:21,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:08:21,771 INFO L225 Difference]: With dead ends: 94 [2022-11-21 17:08:21,771 INFO L226 Difference]: Without dead ends: 88 [2022-11-21 17:08:21,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4102 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=1982, Invalid=29170, Unknown=0, NotChecked=0, Total=31152 [2022-11-21 17:08:21,773 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 370 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 4219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:08:21,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 2050 Invalid, 4219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 4039 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 17:08:21,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-21 17:08:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-21 17:08:21,779 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) [2022-11-21 17:08:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-11-21 17:08:21,781 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 149 [2022-11-21 17:08:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:08:21,782 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-11-21 17:08:21,782 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) [2022-11-21 17:08:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-11-21 17:08:21,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-21 17:08:21,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:08:21,785 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:08:21,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-21 17:08:21,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:08:22,000 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:08:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:08:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1677247156, now seen corresponding path program 13 times [2022-11-21 17:08:22,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:08:22,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936209686] [2022-11-21 17:08:22,001 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:08:22,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:08:22,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:08:22,002 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:08:22,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-21 17:08:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:22,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-21 17:08:22,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:08:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2022-11-21 17:08:24,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:08:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 1575 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-21 17:08:58,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:08:58,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936209686] [2022-11-21 17:08:58,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936209686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:08:58,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:08:58,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 81] total 136 [2022-11-21 17:08:58,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162185266] [2022-11-21 17:08:58,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:08:58,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2022-11-21 17:08:58,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:08:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2022-11-21 17:08:58,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=17861, Unknown=0, NotChecked=0, Total=18360 [2022-11-21 17:08:58,457 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) [2022-11-21 17:09:08,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:08,743 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2022-11-21 17:09:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-21 17:09:08,744 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 [2022-11-21 17:09:08,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:08,745 INFO L225 Difference]: With dead ends: 100 [2022-11-21 17:09:08,745 INFO L226 Difference]: Without dead ends: 94 [2022-11-21 17:09:08,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4781 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=2250, Invalid=34040, Unknown=0, NotChecked=0, Total=36290 [2022-11-21 17:09:08,749 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1518 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 4602 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 5356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 4602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:08,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 2237 Invalid, 5356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 4602 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-21 17:09:08,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-21 17:09:08,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-21 17:09:08,754 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) [2022-11-21 17:09:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2022-11-21 17:09:08,755 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 161 [2022-11-21 17:09:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:08,756 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2022-11-21 17:09:08,757 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) [2022-11-21 17:09:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2022-11-21 17:09:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-21 17:09:08,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:08,758 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:09:08,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-21 17:09:08,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:09:08,970 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:09:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:08,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1199460748, now seen corresponding path program 14 times [2022-11-21 17:09:08,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:08,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702043347] [2022-11-21 17:09:08,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:09:08,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:09:08,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:08,973 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:09:08,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-21 17:09:09,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:09:09,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:09:09,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-21 17:09:09,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2022-11-21 17:09:12,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:09:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1836 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-11-21 17:09:49,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:49,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702043347] [2022-11-21 17:09:49,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702043347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:09:49,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:09:49,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 87] total 146 [2022-11-21 17:09:49,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959030177] [2022-11-21 17:09:49,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:09:49,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2022-11-21 17:09:49,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:49,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2022-11-21 17:09:49,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=20633, Unknown=0, NotChecked=0, Total=21170 [2022-11-21 17:09:49,382 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) [2022-11-21 17:10:00,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:00,008 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2022-11-21 17:10:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-21 17:10:00,009 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 [2022-11-21 17:10:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:00,010 INFO L225 Difference]: With dead ends: 106 [2022-11-21 17:10:00,010 INFO L226 Difference]: Without dead ends: 100 [2022-11-21 17:10:00,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5512 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=2534, Invalid=39286, Unknown=0, NotChecked=0, Total=41820 [2022-11-21 17:10:00,014 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 666 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 5040 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 5368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 5040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:00,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 2525 Invalid, 5368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 5040 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 17:10:00,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-21 17:10:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-21 17:10:00,019 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) [2022-11-21 17:10:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2022-11-21 17:10:00,020 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 173 [2022-11-21 17:10:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:00,021 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2022-11-21 17:10:00,022 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) [2022-11-21 17:10:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2022-11-21 17:10:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-21 17:10:00,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:00,023 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:00,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-21 17:10:00,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:10:00,231 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:00,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1668253132, now seen corresponding path program 15 times [2022-11-21 17:10:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:10:00,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000207383] [2022-11-21 17:10:00,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:10:00,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:10:00,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:10:00,233 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:10:00,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-21 17:10:00,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2022-11-21 17:10:00,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:10:00,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-21 17:10:00,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:10:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2022-11-21 17:10:03,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:10:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 2117 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-11-21 17:10:46,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:10:46,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000207383] [2022-11-21 17:10:46,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000207383] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:10:46,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:10:46,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 93] total 156 [2022-11-21 17:10:46,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184638321] [2022-11-21 17:10:46,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:10:46,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2022-11-21 17:10:46,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:10:46,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2022-11-21 17:10:46,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=23605, Unknown=0, NotChecked=0, Total=24180 [2022-11-21 17:10:46,497 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) [2022-11-21 17:10:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:59,020 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2022-11-21 17:10:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-21 17:10:59,021 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 [2022-11-21 17:10:59,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:59,022 INFO L225 Difference]: With dead ends: 112 [2022-11-21 17:10:59,022 INFO L226 Difference]: Without dead ends: 106 [2022-11-21 17:10:59,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6295 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=2834, Invalid=44908, Unknown=0, NotChecked=0, Total=47742 [2022-11-21 17:10:59,026 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1478 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 5925 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 6659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 5925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:59,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 2871 Invalid, 6659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 5925 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-21 17:10:59,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-21 17:10:59,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-21 17:10:59,032 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) [2022-11-21 17:10:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2022-11-21 17:10:59,033 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 185 [2022-11-21 17:10:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:59,034 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2022-11-21 17:10:59,034 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) [2022-11-21 17:10:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2022-11-21 17:10:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-21 17:10:59,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:59,036 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:59,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-21 17:10:59,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:10:59,247 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:59,248 INFO L85 PathProgramCache]: Analyzing trace with hash 422913524, now seen corresponding path program 16 times [2022-11-21 17:10:59,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:10:59,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296966702] [2022-11-21 17:10:59,248 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:10:59,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:10:59,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:10:59,249 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:10:59,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-21 17:10:59,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:10:59,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-21 17:10:59,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:10:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:10:59,772 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-21 17:10:59,787 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:10:59,788 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 17:10:59,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-21 17:10:59,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:10:59,994 INFO L444 BasicCegarLoop]: Path program histogram: [16, 1] [2022-11-21 17:10:59,999 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:11:00,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:11:00 BoogieIcfgContainer [2022-11-21 17:11:00,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:11:00,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:11:00,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:11:00,089 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:11:00,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:04:51" (3/4) ... [2022-11-21 17:11:00,091 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-21 17:11:00,167 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da27bff8-e794-4e16-a5e0-639bc8cc0b2d/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:11:00,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:11:00,171 INFO L158 Benchmark]: Toolchain (without parser) took 369215.84ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 61.0MB in the beginning and 45.0MB in the end (delta: 16.0MB). Peak memory consumption was 80.3MB. Max. memory is 16.1GB. [2022-11-21 17:11:00,172 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 60.8MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:11:00,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.30ms. Allocated memory is still 81.8MB. Free memory was 60.8MB in the beginning and 50.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:11:00,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.74ms. Allocated memory is still 81.8MB. Free memory was 50.4MB in the beginning and 49.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:11:00,174 INFO L158 Benchmark]: Boogie Preprocessor took 54.60ms. Allocated memory is still 81.8MB. Free memory was 49.0MB in the beginning and 47.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:11:00,174 INFO L158 Benchmark]: RCFGBuilder took 531.80ms. Allocated memory is still 81.8MB. Free memory was 47.9MB in the beginning and 59.3MB in the end (delta: -11.4MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-11-21 17:11:00,180 INFO L158 Benchmark]: TraceAbstraction took 368204.08ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 58.8MB in the beginning and 50.3MB in the end (delta: 8.6MB). Peak memory consumption was 74.2MB. Max. memory is 16.1GB. [2022-11-21 17:11:00,180 INFO L158 Benchmark]: Witness Printer took 82.32ms. Allocated memory is still 144.7MB. Free memory was 50.3MB in the beginning and 45.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 17:11:00,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 60.8MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.30ms. Allocated memory is still 81.8MB. Free memory was 60.8MB in the beginning and 50.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.74ms. Allocated memory is still 81.8MB. Free memory was 50.4MB in the beginning and 49.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.60ms. Allocated memory is still 81.8MB. Free memory was 49.0MB in the beginning and 47.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 531.80ms. Allocated memory is still 81.8MB. Free memory was 47.9MB in the beginning and 59.3MB in the end (delta: -11.4MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 368204.08ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 58.8MB in the beginning and 50.3MB in the end (delta: 8.6MB). Peak memory consumption was 74.2MB. Max. memory is 16.1GB. * Witness Printer took 82.32ms. Allocated memory is still 144.7MB. Free memory was 50.3MB in the beginning and 45.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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<